Keywords: Nano-acoustic Devices, Processes & Materials, Nanosensors & Nanoactuatuators, Nano-biomedicine

Keywords: Nanomaterials, Nanoenergy, Environment & Safety

Keywords: Nanoelectronics: Emerging material and device challenges in futuristic systems

Keywords: Nanomaterials, Nanoscale Communications and Nanonetworks, Fundamentals and applications of nanotubes, nanowires, quantum dots and other low dimensional materials

Keywords: Nanomaterials, Nanofabrication, Nanometrology & Characterization

Keywords: Nanomaterials

Keywords: Nanomaterials, Nanoenergy, Environment & Safety, Modeling & Simulation

Keywords: Nanomaterials, Fundamentals and applications of nanotubes, nanowires, quantum dots and other low dimensional materials, Nanoenergy, Environment & Safety

Keywords: Nanomaterials, Nanometrology & Characterization, Fundamentals and applications of nanotubes, nanowires, quantum dots and other low dimensional materials

Keywords: Nano-optics, Nano-photonics & Nano-optoelectronics, Fundamentals and applications of nanotubes, nanowires, quantum dots and other low dimensional materials, Nanomaterials

Keywords: Nano-optics, Nano-photonics & Nano-optoelectronics, Fundamentals and applications of nanotubes, nanowires, quantum dots and other low dimensional materials
Abstract: In last years, the introduction of new materials such as graphene has led to advances in the performances of silicon-based photonic devices. Here, we present an innovative type of photodetector based on graphene embedded between hydrogenated amorphous and crystalline silicon. More in detail, with the aim to increase the graphene optical absorption in the near-infrared spectrum, a photodetector based on low-finesse Fabry-Pérot optical microcavity has been investigated demonstrating responsivities of 26 mA/W around 1550nm. Furthermore, a photodetector integrated into a hybrid waveguide able to absorb the full incoming radiation has been numerically studied.

Keywords: Nano-optics, Nano-photonics & Nano-optoelectronics, Nanomaterials

Keywords: Nano-optics, Nano-photonics & Nano-optoelectronics, Nanofabrication

Keywords: Nano-optics, Nano-photonics & Nano-optoelectronics, Nanoelectronics: Emerging material and device challenges in futuristic systems, Nanosensors & Nanoactuatuators
Abstract: Van der Waals (vdWs) heterostructures with their extended cross-dimensional integration freedom, emerged as most appropriate choice for next-generation electronics and optoelectronics. In the post Moore era, the electronics industry is on the verge of shifting from covalent or ionic bond-dominated homo- and hetero-interfaces to vdWs integrated systems, hailed by clean interfaces free of dangling bonds and Fermi-level pinning while lodging rich device physics from confinement and gating effects. Hence, it is essential to develop devices exploiting cross-dimensional benefits, bringing the best of materials in different dimensions. One such strategy is to integrate two-dimensional (2D) materials with bulk semiconductors in the most widely used large-scale device schemes like charge-coupled devices (CCD) and complementary-metal-oxide-semiconductor (CMOS) using a flip-chip method. Taking this into consideration, we demonstrate 2D-silicon hybrid imagers with the benefits of both CCD and CMOS, showing potential for broadband, ultrafast photoresponse, viable for the period of Internet of Things (IoTs), artificial intelligence (AI), and compute-in-memory.

Keywords: Fundamentals and applications of nanotubes, nanowires, quantum dots and other low dimensional materials, Nanomaterials, Nanometrology & Characterization

Keywords: Fundamentals and applications of nanotubes, nanowires, quantum dots and other low dimensional materials, Nano-optics, Nano-photonics & Nano-optoelectronics, Nanomaterials

Keywords: Fundamentals and applications of nanotubes, nanowires, quantum dots and other low dimensional materials, Nanomaterials, Nano-optics, Nano-photonics & Nano-optoelectronics

Keywords: Fundamentals and applications of nanotubes, nanowires, quantum dots and other low dimensional materials, Nanodiamond and nanocarbon structures: materials and devices

Keywords: Nanoelectronics: Emerging material and device challenges in futuristic systems, Modeling & Simulation
Abstract: We report on modeling studies on the effect of very low temperatures (4K–77K) on the behavior of electron transport in a [110] axially aligned, 1.3 nm diameter unstrained silicon nanowire (SiNW). A sp3d5s* tight-binding scheme is used to calculate the band structure within an Ensemble Monte Carlo simulation. Electron scattering occurs through bulk-acoustic and bulk-optical phonons and includes all intra-subband and inter-subband events. A comparison with room temperature (300K) shows that at lower temperatures, average electron steady-state drift velocity increases by 2 or more times at relatively moderate electric fields. Transient average electron velocity also shows a more pronounced streaming motion. This is attributed to a decrease in electron-phonon scattering rates with temperature.

Keywords: Fundamentals and applications of nanotubes, nanowires, quantum dots and other low dimensional materials, Nano-optics, Nano-photonics & Nano-optoelectronics, Nanomaterials

Keywords: Fundamentals and applications of nanotubes, nanowires, quantum dots and other low dimensional materials, Nanomaterials

Keywords: Nanomagnetics, Spintronics, Nanoelectronics: Emerging material and device challenges in futuristic systems

Keywords: Quantum, Neuromorphic & Unconventional Computing

Keywords: Spintronics, Nanoelectronics: Emerging material and device challenges in futuristic systems

Keywords: Spintronics, Quantum, Neuromorphic & Unconventional Computing, Nanoelectronics: Emerging material and device challenges in futuristic systems

Keywords: Spintronics, Nanoelectronics: Emerging material and device challenges in futuristic systems
Abstract: Spin wave is one of the most prominent driving mechanisms for designing nanoscale spintronic devices. It generates less heat than electric current due to the fact that there is no movement of charged particles. Hence, spin-wave driven devices are immune to Joule heating that is often present in traditional electronic devices. In this paper, it is demonstrated that spin wave driven skyrmionium is able to achieve transistor functionality by employing a perpendicular magnetic anisotropy (PMA) barrier on a nanotrack. This PMA barrier creates different energy state within the barrier region that is responsible for pinning of the skyrmionium. Moreover, the velocity of the skyrmionium is approximately 30% higher than the skyrmion. This is due to the fact that skyrmionium have net zero topological charge so there is no transversal deflection. In order to facilitate the proper functioning, it is necessary to consider the amplitude and frequency of the excitation field within a specific range. The proposed device, that functions as a transistor by employing microwave fields with frequencies of 80 GHz and amplitudes of 0.6T without modifying the edges of the nanotrack, has the potential for developing future non-charge-based spintronic circuits.

Keywords: Spintronics
Abstract: In the semiconductor industry, spintronic technology has gained significant attention in the new era due to its compatibility with CMOS design. Among the promising spintronic devices, the voltage-gated spin-orbit torque magnetic tunnel junction (VGSOT-MTJ) stands out, offering the potential to overcome limitations found in other spintronic devices like spin-transfer torque (STT) and spin-orbit torque (SOT) magnetic tunnel junctions. However, the performance and reliability of VGSOT-MTJ can be influenced by variations in critical device parameters. This work investigates the variability of device characteristics in VGSOT-MTJ and proposes an innovative framework assisted by machine learning (ML) to streamline the technological pathfinding process. The proposed framework leverages three regression models based on machine learning techniques: K-nearest neighbors (KNN), random forest, and neural network regressors. Each model's effectiveness is assessed by evaluating metrics such as mean error, R2 score, root mean square error (RMSE), and inference time. Our ML assisted approach provided a more accurate and efficient analysis, with R2 scores of 0.99. Furthermore, significant improvement in prediction time is observed as compared to the SPICE simulation time.

Keywords: Nanomaterials, Nanofabrication

Keywords: Nanomaterials, Nanosensors & Nanoactuatuators, Nano-biomedicine

Keywords: Nanomaterials, Nanopackaging
Abstract: A series of Zn-based Mixed-Ligand Metal-Organic-Frameworks (ML-MOFs) containing a bis-isonicotinoyl and a dicarboxylate linker have been solvothermally synthesized. The structural analyses evidence two types of framework entanglements, interpenetrated and polycatenated, that lead to materials featured by different porosity. The host-guest propensity of the materials toward different organic molecules is highlighted, with particular emphasis to the supramolecular organization adopted by the included guest molecules, as inferred by single-crystal X-ray diffraction analysis.

Keywords: Nanomaterials

Keywords: Nanomaterials, Nanoenergy, Environment & Safety

Keywords: Nanomaterials

Keywords: Nanoelectronics: Emerging material and device challenges in futuristic systems, Nanomaterials, Modeling & Simulation

Keywords: Nanoelectronics: Emerging material and device challenges in futuristic systems, Nanomaterials, Nanofabrication

Keywords: Modeling & Simulation

Keywords: Nanoelectronics: Emerging material and device challenges in futuristic systems, Nanofabrication, Commercializing nanotechnology

Keywords: Nanoelectronics: Emerging material and device challenges in futuristic systems, Fundamentals and applications of nanotubes, nanowires, quantum dots and other low dimensional materials, Nanomaterials
Abstract: We report the electrical characterizations of multi-layer black phosphorus (BP)-based field-effect transistor (FET) capped and uncapped with a PMMA film. The PMMA capping film affects contact behavior and channel resistance. Further, the output characteristics show asymmetric and symmetric behavior when the device is capped and uncapped with PMMA, although in both cases a unipolar p-type conduction is confirmed. PMMA capped BP FET does not exhibit any modulation in the transfer characteristic. On the contrary, the uncapped BP device exhibits current modulation, and the calculated mobility is about 22 cm2/Vs.

Keywords: Nanoelectronics: Emerging material and device challenges in futuristic systems, Nanomaterials, Nanofabrication
Abstract: The rapid expansion of the (IoT) has fueled the exploration of novel materials and device architectures to meet the demands of applications such as smart wearables, environmental sensors, and flexible displays. In this context, graphene has emerged as a remarkable candidate due to its exceptional electronic and mechanical properties that are suitable for the development of flexible electronic devices. This work investigates the potential of C60- and Pentacene-doped GFETs as building blocks for complementary inverters in digital and/or analog flexible electronic circuits. The fabricated complementary inverters use doped graphene as the channel material for both the n- and the p-type transistors. The channel length of the GFETs spans the range from 5 to 100 µm and does not affect the measured transfer characteristic of the inverters, which is obtained by operating the transistors between their respective Dirac points. While the GFET-based inverters show a voltage gain of about 2 x 10^-2 and a bandwidth up to 10 kHz, circuit simulations indicate that by integrating the GFETs and by carefully designing the chip metal interconnects, the inverter could reach operating frequencies in the GHz regime. Additionally, scaling the graphene channel length allows to tune the cut-off frequency and static power dissipation of the inverter, potentially meeting the requirements of specific applications.

Keywords: Nano-optics, Nano-photonics & Nano-optoelectronics

Keywords: Nanomaterials, Nanofabrication, Nanosensors & Nanoactuatuators
Abstract: In recent times, there has been significant progress in the field of flexible plasmonic sensors, driven by the numerous advantages offered by flexible sensors, particularly their mechanical properties and ability to conform to non- planar surfaces. Taking advantage of these benefits, a three- dimensional (3D) optical sensor has been developed by integrating gold citrate nanoparticles into a polymer matrix, specifically a polyethylene glycol diacrylate (PEGDA) hydrogel. This hybrid sensor exhibits the ability to detect molecules through both label-free and non-label-free approaches, leveraging the unique characteristics of hydrogels and the presence of noble metal nanoparticles. The mechanical properties of hydrogels allow for expansion or swelling in the presence of water, enabling sensitive detection of analytes. Additionally, the integration of noble metal nanoparticles, such as gold citrate nanoparticles, offers enhanced sensing capabilities through mechanisms such as metal-enhanced fluorescence (MEF) and surface-enhanced Raman scattering (SERS). The proposed sensor platforms are not only effective but also cost-efficient, making them suitable for large-scale industrial production. Furthermore, they possess low detection limits, indicating their high sensitivity in detecting target molecules. With these promising features, the 3D optical sensor holds great potential for future applications in various fields, ranging from healthcare diagnostics to environmental monitoring and beyond. The scalability and versatility of these platforms pave the way for a wide range of practical applications in the years to come.

Keywords: Nanomaterials, Nanoelectronics: Emerging material and device challenges in futuristic systems, Fundamentals and applications of nanotubes, nanowires, quantum dots and other low dimensional materials

Keywords: Nanomaterials, Commercializing nanotechnology, Fundamentals and applications of nanotubes, nanowires, quantum dots and other low dimensional materials

Keywords: Nanomaterials, Nanofabrication, Nanodiamond and nanocarbon structures: materials and devices

Keywords: Nanomaterials
Abstract: Preserving physical, mechanical, and electrical properties after UV irradiation is one of the essential functions of Room Temperature Vulcanized Silicone Rubber (RTV-SIR) as an insulating coating. On high-voltage insulators exposed to flames brought on by lightning and sparks, flame retardant polymer coatings are essential. Utilizing flame retardant fillers is the typical way for enhancing the flame retardancy performance of polymeric materials. Current study investigates the effect of silica content (1, 3, and 5 wt.%) on various properties of RTV-SiO2 nanocomposite under accelerated weathering conditions. The relevant tests were performed according to the standards to study the mechanical properties such as hardness, maximum elongation, tensile strength, tear strength, density, and flame retardancy before and after aging. Results indicated that nano-silica presence in the silicon rubber polymer matrix could enhance its different properties as well as longevity. Hardness was raised by increasing the silica content and the rate of this enhancement changed even more after the ultraviolet (UV) irradiation. However, tear strength, tensile strength, and elongation at breakpoint showed the best result on the optimal value of silica (3 wt.%), and they were significantly reduced at higher percentages (5 wt.%). Water absorption percentage and flame retardancy also excessed with the increment of nano-silica in the composite. However, the optimal percentage of nano silica improves the quality of RTV while significantly reducing it at higher percentages.

Keywords: Nano-optics, Nano-photonics & Nano-optoelectronics, Nanofabrication, Commercializing nanotechnology

Keywords: Nano-optics, Nano-photonics & Nano-optoelectronics, Nanomaterials

Keywords: Nano-optics, Nano-photonics & Nano-optoelectronics

Keywords: Modeling & Simulation, Nanomaterials, Nanoelectronics: Emerging material and device challenges in futuristic systems

Keywords: Nano-optics, Nano-photonics & Nano-optoelectronics, Modeling & Simulation
Abstract: The localized surface plasmon resonance (LSPR) or light-induced coherent collective oscillation of electrons in a cuboid gold nanoparticle (AuNP) on the GaAs cap layer of an undoped GaAs/AlGaAs tunnel-coupled quantum well (TCQW) were investigated using the 3-D finite element method (FEM). Understanding this phenomenon can be used to enhance the sensitivity of many optical devices. Hereby, the results show that the AuNP can generate two plasmon frequency ranges in the visible (~515–540 nm) and near-IR (between 700–800 nm). Increasing the lateral dimension (L) of AuNP can boost the extinction cross-sections and affect the red shift of wavelength. Furthermore, we include the effect of distance (d) between the GaAs cap layer and AuNP in terms of the nanogap between these two surfaces, and the results indicate that this tiny gap can increase the intense electric field intensity near AuNP, also known as a hot spot. At d = 0.5 nm, under the appropriate frequency, the hot spot provides the highest intensity of electric field. The variation of d dominates the extinction cross-section peak by shifting from visible to near-IR. The modulation of the electric field surrounding AuNP in relation to the GaAs refractive index can optimize the operating wavelength and output efficiency of nanostructures. This theoretical analysis can serve as a reference for optimization without needing refabrication of a nanostructure used as a near-infrared laser or detector.

Keywords: Nano-optics, Nano-photonics & Nano-optoelectronics, Nanofabrication, Nanomaterials

Keywords: Fundamentals and applications of nanotubes, nanowires, quantum dots and other low dimensional materials, Nanomaterials
Abstract: Due to the increasing need to monitor health and environment in real time and to energize small electronic devices, new materials are under extensive investigations. Between others, carbon nanotubes (CNTs) are promising alternatives as building blocks in bioelectrochemical devices due to their unique electrical, mechanical properties, and their high specific surface. Furthermore, their ease and well-established organic functionalization brings new properties to nanostructured electrodes such as specific docking sites for biomolecules. Moreover, CNT films exhibit a high electroactive surface area due to the natural formation of highly porous three-dimensional networks, suitable for the anchoring of a high amount of bioreceptor units, thus leading to improved sensitivities. With some simple functionalization techniques, CNTs can acts as almost perfect support for enzyme wiring and is still the privileged material in the field of enzymatic biofuel cells. The most appropriate functionalization techniques for CNTs are summarized leading to enhance the performances of biosensors and biofuel cells.

Keywords: Fundamentals and applications of nanotubes, nanowires, quantum dots and other low dimensional materials, Nanosensors & Nanoactuatuators

Keywords: Fundamentals and applications of nanotubes, nanowires, quantum dots and other low dimensional materials, Nanoelectronics: Emerging material and device challenges in futuristic systems, Nanofabrication

Keywords: Nanosensors & Nanoactuatuators, Fundamentals and applications of nanotubes, nanowires, quantum dots and other low dimensional materials, Nanoelectronics: Emerging material and device challenges in futuristic systems
Abstract: The discrimination and identification of complex mixtures remain a significant challenge to chemical analysis. The conventional technique for complex mixture analysis refers to a complete component-by-component approach, such as gas chromatography/mass spectrometry (GC/MS), which requires sophisticated facilities and professional personnel. In this work, we propose a strategy using carbon nanotubes-based multichannel e-nose for complex mixture discrimination, taking coffee aroma as an example. By extracting efficient features from the sensing response profile, a highly distinctive smellprint feature for coffee aroma is achieved. In combination with an efficient machine learning classifier algorithm, an excellent identification accuracy of 97.4% for three types of coffee aroma is achieved. This proposed strategy provides a portable, low-cost, high-efficiency solution for complex mixture discrimination and could be applied in various fields, such as food quality monitoring, volatile organic compound-related disease diagnosis, environmental monitoring, public safety securing, etc.

Keywords: Fundamentals and applications of nanotubes, nanowires, quantum dots and other low dimensional materials

Keywords: Fundamentals and applications of nanotubes, nanowires, quantum dots and other low dimensional materials, Nanoelectronics: Emerging material and device challenges in futuristic systems, Nano-optics, Nano-photonics & Nano-optoelectronics

Keywords: Quantum, Neuromorphic & Unconventional Computing

Keywords: Nanomagnetics, Spintronics, Nano-biomedicine

Keywords: Quantum, Neuromorphic & Unconventional Computing, Spintronics, Nanosensors & Nanoactuatuators

Keywords: Quantum, Neuromorphic & Unconventional Computing, Nanofabrication

Keywords: Spintronics, Nanomagnetics, Nanofabrication
Abstract: Physical unclonable functions (PUFs) have been investigated as a hardware security primitive for various ap- plications such as anticounterfeiting, authentication, and secret key generation, owing to their high unpredictability. Compared with silicon PUFs, spin-orbit torque PUFs (SOT-PUFs) are drawn more attention, contributed to the advantages including low power consumption and non-volatility. However, SOT-PUFs suffer from the limited challenge-response pairs space, the external magnetic field and high setting current. In this paper, we propose a reconfigurable PUF (rPUF) based on the Type-Y SOT-array, which features high speed, pure-electrical control and reconfigurability. The proposed rPUF presents great randomness as the mean-value of the 0/1 distribution and entropy are calculated to be 0.5025 and 0.9901, respectively. Meanwhile, the normalized hamming distance in the case of 100 times refreshes achieves 49.66%, which demonstrates the great reconfigurability. Our work verifies the feasibility and randomness of rPUF based on the Type-Y SOT-array by the simulation and experiment, which provides robustness against the manufacturing variation and broadens reliability of SOT-PUF applications.

Keywords: Spintronics, Nanofabrication, Nanoenergy, Environment & Safety
Abstract: Abstract—In this paper, we present a 1 kb physical unclonable function (PUF) chip based on in-plane magnetic anisotropy spin-orbit torque (IMA-SOT) magnetic random-access memory, which utilizes the process deviation of common state of SOT devices to generate the randomness. Moreover, a dual-mode logic control design with a write-back circuit is proposed to implement the transition between PUF and memory functionalities, and to improve the reliability of PUF responses. Systematically investigation for the metrics of the PUF chip, including uniformity, uniqueness and reliability demonstrates the great performance of the proposal. To further validate the reliability of the PUF array, a comprehensive pretest procedure was applied. Additionally, the PUF array was subjected to repeated read testing under varying temperature and supply voltages to evaluate its reading stability under different operating conditions. This work provides a feasible approach for the preparation of highly integrated PUF chips based on SOT devices, offering a promising solution for secure hardware authentication applications.

Keywords: Nanoenergy, Environment & Safety, Nano-biomedicine

Keywords: Nanoenergy, Environment & Safety, Nanomaterials, Nanoelectronics: Emerging material and device challenges in futuristic systems

Keywords: Nanoenergy, Environment & Safety, Nanomaterials, Nanofabrication

Keywords: Nanoenergy, Environment & Safety, Nanoelectronics: Emerging material and device challenges in futuristic systems

Keywords: Nanosensors & Nanoactuatuators, Nanofabrication, Nanoenergy, Environment & Safety

Keywords: Nanosensors & Nanoactuatuators, Nanoenergy, Environment & Safety
Abstract: This work describes a unique graphene-based thermoelectric generator that employs PVDF/GNP nanocomposites cast on commercial textiles and exhibits exceptional electrical and thermal capabilities while retaining flexibility, chemical stability, and corrosion resistance. Additionally, the size investigation of the thermoelectric generator is carried out. Overall, this novel thermoelectric generator can mark a considerable step forward in the field of energy generation from irregular surfaces.

Keywords: Nanoelectronics: Emerging material and device challenges in futuristic systems, Nanosensors & Nanoactuatuators, MEMS/NEMS

Keywords: Nanoelectronics: Emerging material and device challenges in futuristic systems, Nano-optics, Nano-photonics & Nano-optoelectronics, Fundamentals and applications of nanotubes, nanowires, quantum dots and other low dimensional materials

Keywords: Spintronics, Fundamentals and applications of nanotubes, nanowires, quantum dots and other low dimensional materials, Nanoelectronics: Emerging material and device challenges in futuristic systems

Keywords: Nanoelectronics: Emerging material and device challenges in futuristic systems, Fundamentals and applications of nanotubes, nanowires, quantum dots and other low dimensional materials

Keywords: Nanometrology & Characterization, Nanoelectronics: Emerging material and device challenges in futuristic systems

Keywords: Nanomaterials, Nanoelectronics: Emerging material and device challenges in futuristic systems, Nanoenergy, Environment & Safety
Abstract: The electromagnetic interference shielding effectiveness of nano-antennas, consisting of multi-walled carbon nanotubes cast on WSe2-coated carbon fiber reinforced polymer, was investigated at the microwave frequency range between 26 to 40 GHz. The measurements show an enhancement of shielding effectiveness from an initial value of -55 dB to -70 dB at 30 GHz for carbon fiber-reinforced polymer coated with a monolayer of WSe2 and patterned with multi-walled carbon nanotubes. This heterostructure shows promises for applications in electromagnetic interference shielding.

Keywords: Nano-optics, Nano-photonics & Nano-optoelectronics, Nanomaterials, Nano-biomedicine

Keywords: Nanomaterials

Keywords: Nanomaterials, Nano-optics, Nano-photonics & Nano-optoelectronics, Nanoelectronics: Emerging material and device challenges in futuristic systems

Keywords: Nanomaterials, Nano-optics, Nano-photonics & Nano-optoelectronics, Fundamentals and applications of nanotubes, nanowires, quantum dots and other low dimensional materials

Keywords: Modeling & Simulation, Nano-biomedicine, Nanomaterials
Abstract: Cell aggregates are numerically modelled to mimic in vitro experiments of cellular spheroid subjected to high intensity pulsed electric filed inducing electroporation. The effect of presence of iron oxide nanoparticles close to cells is studied by numerical simulations. The electric field distribution is analyzed by means of Finite Element Analysis in the case of electroporation pulses protocol in order to assess the effect of different nanoparticles distributed around the cell aggregates. Moreover the role of the collagen and of its interaction with the nanoparticles is also considered in order to corroborate the experimentally detected improvement of electroporation effect in less intense electric field protocol. The comparison between static and transient analysis results highlights the role of the material dielectric properties in the EP inducing effect.

Keywords: Nanomaterials, Fundamentals and applications of nanotubes, nanowires, quantum dots and other low dimensional materials, Nanomagnetics

Keywords: Nano-optics, Nano-photonics & Nano-optoelectronics, Nanoelectronics: Emerging material and device challenges in futuristic systems, Fundamentals and applications of nanotubes, nanowires, quantum dots and other low dimensional materials

Keywords: Nano-optics, Nano-photonics & Nano-optoelectronics, Nanomaterials, Quantum, Neuromorphic & Unconventional Computing

Keywords: Nano-optics, Nano-photonics & Nano-optoelectronics, Nanoelectronics: Emerging material and device challenges in futuristic systems, Nanofabrication

Keywords: Nano-optics, Nano-photonics & Nano-optoelectronics, Nanomaterials

Keywords: Nano-optics, Nano-photonics & Nano-optoelectronics, Nanosensors & Nanoactuatuators, Nanodiamond and nanocarbon structures: materials and devices
Abstract: We synthesized new tetraphenyl fulvene (TPF) derivatives by connecting the phenyl rings 3 and 4 with electron donor groups and the fulvene carbon 6 with two electron-withdrawing groups. The compound with donor thiophene and acceptor methyl malonate, named 5mT, displays the highest emission intensity and emission frequencies in solutions that vary from 435 to 495 nm in the different solvents, while the emission frequency is 435 nm independently of the solvent for the other TPF derivatives

Keywords: Nano-optics, Nano-photonics & Nano-optoelectronics, Nanomaterials

Keywords: Nanomaterials, Nano-optics, Nano-photonics & Nano-optoelectronics, Nanoenergy, Environment & Safety

Keywords: Fundamentals and applications of nanotubes, nanowires, quantum dots and other low dimensional materials

Keywords: Fundamentals and applications of nanotubes, nanowires, quantum dots and other low dimensional materials

Keywords: Fundamentals and applications of nanotubes, nanowires, quantum dots and other low dimensional materials, Nanodiamond and nanocarbon structures: materials and devices, Nanoelectronics: Emerging material and device challenges in futuristic systems
Abstract: The combination of two-dimensional materials, such as graphene, with established thin films offers great opportunities for enabling next-generation vertical transistors for various applications. This paper gives a brief overview about different vertical transistor concepts using two-dimensional materials proposed so far, e.g. the hot electron transistor and the Barristor. With the arrival of two-dimensional materials, the hot electron transistor also experienced a revival with predicted cut-off frequencies in the THz range. The Barristor overcomes the weak current saturation of lateral graphene field-effect transistors and high on-off ratios up to 10^7 were demonstrated, which are suitable parameters for logic applications. By combining a semiconductor-graphene-semiconductor design of the simplest hot electron transistor with the Barristor operating principle a new device, called graphene adjustable-barriers transistor, can be realized. This new device concept provides the potential for RF, power electronics, and optoelectronic applications.

Keywords: Fundamentals and applications of nanotubes, nanowires, quantum dots and other low dimensional materials

Keywords: Fundamentals and applications of nanotubes, nanowires, quantum dots and other low dimensional materials

Keywords: Quantum, Neuromorphic & Unconventional Computing

Keywords: Quantum, Neuromorphic & Unconventional Computing, Spintronics, Nanomagnetics

Keywords: Spintronics, Nanomagnetics

Keywords: Quantum, Neuromorphic & Unconventional Computing, MEMS/NEMS, Nano-acoustic Devices, Processes & Materials

Keywords: Nanoelectronics: Emerging material and device challenges in futuristic systems, Modeling & Simulation, Quantum, Neuromorphic & Unconventional Computing

Keywords: Nano-optics, Nano-photonics & Nano-optoelectronics, Fundamentals and applications of nanotubes, nanowires, quantum dots and other low dimensional materials, Nanodiamond and nanocarbon structures: materials and devices
Abstract: The process of fabricating a silicon junction with a low-dimensional material often requires the development of a parallel metal-insulator-semiconductor (MIS) structure. Although generally overlooked, this MIS structure plays a crucial role in determining the optoelectronic properties of the device. This study focuses on two different devices based on graphene (Gr-device) and carbon nanotubes (CNT-device) that leverage a thin silicon nitride (Si₃N₄) layer to create a parallel MIS structure. This enables the devices to exhibit new optoelectronic features and enhanced photoconduction capabilities.

Keywords: Nanoelectronics: Emerging material and device challenges in futuristic systems, Nanoenergy, Environment & Safety, Nanomaterials

Keywords: Nanoenergy, Environment & Safety, Nano-optics, Nano-photonics & Nano-optoelectronics

Keywords: Nanoenergy, Environment & Safety, Nanofabrication
Abstract: This investigation delves into the innovative application of spray-printing methods for fabricating lithium nickel manganese oxide cathodes (LiNi_0.5Mn_1.5O₄), a vital component in lithium-ion batteries. The spotlight of this research focuses on the introduction and application of Cyrene, a sustainable bio-based solvent. Cyrene is recognized as an environmentally-friendly substitute for conventional hazardous solvents, specifically N-Methyl-2-pyrrolidone. These harmful solvents are typically utilized in the formulation of cathode slurries and have been a cause for concern due to their negative impact on the environment and human health. In this research, the PVDF binder was replaced with a homopolymer that offers the same processing properties but dissolves in a wider range of solvents, including Cyrene. The spray-printed LiNi_0.5Mn_1.5O₄ cathodes, utilizing this green approach, demonstrated excellent adhesion and surface morphology, thereby underlining the potential of such eco-friendly methods in battery manufacturing.

Keywords: Modeling & Simulation, Nanomaterials, Nanoenergy, Environment & Safety

Keywords: Nanoenergy, Environment & Safety, Nanofabrication, Nanomaterials
Abstract: Lead-free perovskite materials synthesized through solution-based methods have showcased remarkable photovoltaic performance, alongside appropriate bandgaps for efficient solar absorption in solar cells. These attributes have been confirmed through the utilization of scanning electron microscopy (SEM) and ultraviolet-visible spectroscopy (UV-Vis). Furthermore, these materials have demonstrated commendable stability when subjected to prolonged exposure to light and heat, thus establishing their potential as an environmentally friendly alternative for solar cell technology. While lead-based materials possess high power conversion efficiency in solar cell applications, their inherent toxicity presents environmental concerns. To address this issue, lead can be substituted with Bi3+ in lead-free perovskite materials, reducing pollution and enhancing moisture resistance. The initial step involves optimizing the mixing ratio of gamma-butyrolactone (GBL) and Dimethyl Sulfoxide (DMSO) and combining them with appropriate precursors and Bi3+ ions to form a Three-Dimensional (3D) CsBi3I10 perovskite structure.

Keywords: Nanoenergy, Environment & Safety, Fundamentals and applications of nanotubes, nanowires, quantum dots and other low dimensional materials, Nanodiamond and nanocarbon structures: materials and devices

Keywords: Nanoelectronics: Emerging material and device challenges in futuristic systems

Keywords: Nanoelectronics: Emerging material and device challenges in futuristic systems, Nanomaterials

Keywords: Nanoelectronics: Emerging material and device challenges in futuristic systems

Keywords: Nanoelectronics: Emerging material and device challenges in futuristic systems, Nanomagnetics, Nano-biomedicine

Keywords: Nanoelectronics: Emerging material and device challenges in futuristic systems, Nanofabrication, Nano-acoustic Devices, Processes & Materials
Abstract: A highly soluble, non-toxic, and biocompatible polymer polyvinylpyrrolidone (PVPy) was explored as a gate dielectric to demonstrate low-voltage operated p-channel organic transistors. Devices with TIPS-Pentacene: Polystyrene as channel layer exhibited good electrical characteristics at -5 V operation. Moreover, excellent repeatability, bias-stress stability, and ambient stability up to 3 months were demonstrated for these transistors. The circuit capability was also investigated through implementation of resistive load inverter circuits. Organic transistors with such eco-friendly and solution-processed materials will be suitable for future sustainable electronic systems and applications.

Keywords: Nanoelectronics: Emerging material and device challenges in futuristic systems, Nanofabrication, Nanomaterials

Keywords: Fundamentals and applications of nanotubes, nanowires, quantum dots and other low dimensional materials, Nanodiamond and nanocarbon structures: materials and devices

Keywords: Nanomaterials

Keywords: Nano-optics, Nano-photonics & Nano-optoelectronics, Nanomaterials

Keywords: Nanofabrication, Nanomaterials, Nanoelectronics: Emerging material and device challenges in futuristic systems

Keywords: Spintronics, Fundamentals and applications of nanotubes, nanowires, quantum dots and other low dimensional materials, Nano-optics, Nano-photonics & Nano-optoelectronics

Keywords: Nanomaterials, Nanofabrication
Abstract: The fabrication of ceramic aerogel with ultralow density, excellent thermal insulation performance, high temperature stability and robust mechanical property has remained a great challenge. In this study, ceramic nanofibrous aerogel with three-dimensional network structure was prepared via directional freeze-drying method, which combined mullite nanofibres with binders. The unique multi-level pore structure, ie., the major micro-pores induced by the formation of ice crystals and the minor micro-pores derived from the connection of nanofibres, could be observed, leading to the integrated properties of the ultralow density (0.029g/cm3), low thermal conductivity at room temperature (0.036W/(mK)), and high compressive strength (0.33Mpa at strain of 0.9). Furthermore, the nanofibrous aerogel can be readily produced with adjustable density and shape, providing a new perspective in the advancement of thermal insulation materials characterized by high strength, ultralow density, and structural adaptability.

Keywords: Nanomaterials, Nano-optics, Nano-photonics & Nano-optoelectronics, Fundamentals and applications of nanotubes, nanowires, quantum dots and other low dimensional materials

Keywords: Nanomaterials, Fundamentals and applications of nanotubes, nanowires, quantum dots and other low dimensional materials, Nanoenergy, Environment & Safety

Keywords: Nanomagnetics, Nanomaterials
Abstract: A sample of nickel ferrite (NiFe₂O₄) magnetic nanoparticles covered with oleic acid (OA) has been analyzed in DC magnetic fields. The most commonly used methods to extract the blocking temperature (T_B) have been compared in a study of the coercive field as a function of temperature. The temperature corresponding to a zero coercive field has been considered to be the best candidate for T_B. In addition, several information about the anisotropy of the sample has been deduced from the temperature behavior of the coercive field.

Keywords: Nanofabrication, Nanosensors & Nanoactuatuators, Nano-fluidics and integrated bio-chips
Abstract: Recent high-tech industries, such as display, semiconductor, bio-reactor and so on, requires ultra-fine feature size of devices. From the view of manufacturing process, using master mold and forming is the most economical and productive way to mass production, however it is not easy because of limitation of conventional machining techniques such as mechanical machining and laser machining. In this research, electrodischage and mechanical hybrid machining system is used to fabricate ultrafine structure on ultrahard master mold with feature size below 20 μm. Machining signals; force, acceleration and acoustic emission are collected and analyze to enhance fabrication precisions.

Keywords: Nanomaterials, Nanoelectronics: Emerging material and device challenges in futuristic systems, Nanoenergy, Environment & Safety

Keywords: Nanoelectronics: Emerging material and device challenges in futuristic systems

Keywords: Nanosensors & Nanoactuatuators, Nanoelectronics: Emerging material and device challenges in futuristic systems, Nano-optics, Nano-photonics & Nano-optoelectronics

Keywords: Modeling & Simulation, Nanoelectronics: Emerging material and device challenges in futuristic systems
Abstract: We report on modeling studies on the effects of elevated temperatures [350K-450K] on a gate-all-around field effect transistor (GAAFET) with a single-wall semiconducting zigzag (49,0) carbon nanotube as the active channel. The basis for the study are electronic band structure calculations within a tight-binding (TB) scheme incorporated in a self-consistent ensemble Monte Carlo-electrostatic solver. Phonon dispersion includes zone-folded graphene LA and LO phonons, and the lowest radial-breathing mode (RBM) dispersion. Electron-phonon scattering rates are evaluated using Fermi’s Golden Rule and deformation potential approximation. Device responses are compared with standard room temperature (300K) responses. Elevated temperatures are seen to decrease the device drive current, both under steady-state and device switching conditions. This is attributed to an increase in electron-phonon scattering rates with temperature. Qualitatively, the devices are seen to work appropriately at relatively higher temperatures.

Keywords: Nanofabrication, Nano-biomedicine, Nanomaterials

Keywords: Education in nanotechnology, Nanodiamond and nanocarbon structures: materials and devices, Fundamentals and applications of nanotubes, nanowires, quantum dots and other low dimensional materials

Keywords: Nanomaterials, Nano-biomedicine

Keywords: Nanofabrication

Keywords: Nano-optics, Nano-photonics & Nano-optoelectronics, Nanomaterials

Keywords: Nanofabrication, Nanomaterials, MEMS/NEMS
Abstract: This paper presents a versatile and scalable method for generating sub 20 nm nanogaps based on standard I-line lithography. The nanogaps are self-aligned to lithographically patterned features and make use of a combination of corner lithography, edge retraction, and sidewall oxidization. We demonstrate the flexibility of this approach by extending it to include coaxial holes in the center of the circular nanogaps, and by filling of the nanogaps with platinum silicide to create nanowires.

Keywords: Nanomaterials, Nanosensors & Nanoactuatuators, Nanoelectronics: Emerging material and device challenges in futuristic systems
Abstract: Semiconducting polymers are increasingly exploited in biomedical application. Here we optimized a bio-hybrid photo-electrode surface based on a conjugated polymer thin film combined with nanomaterials, namely carbon nanotubes (CNTs). The CNT-modified photo-electrode shows an increased roughness of 70% and offers a quadrupled capacitance, as compared to the standard photo-electrode. A completely capacitive coupling between semiconducting polymers and living cells is the ideal scenario in bioelectronics. Thus, the presented CNT-modified photo-electrode adds a great value for opto-electrical biological systems stimulation.

Keywords: Fundamentals and applications of nanotubes, nanowires, quantum dots and other low dimensional materials, Modeling & Simulation

Keywords: Nanosensors & Nanoactuatuators, Nano-optics, Nano-photonics & Nano-optoelectronics
Abstract: This study explores the influence of geometric variations on the electromagnetic response of a graphene-enhanced grating in the terahertz frequency range, in the view of supporting the development of high-performing passive devices for advanced terahertz applications. The investigation is addressed by performing Terahertz Time-Domain Spectroscopy (TTDS) measurements, in which the dimension of the grating’s geometry and the thickness of the gold reflector vary according to a factorial design. The analysis provides insights into the interplay between the geometry of the metamaterial and its electromagnetic response, highlighting the role of the grating’s layout and the gold’s reflector thickness in determining the transmission, reflection, and absorption of the grating. The results advance the knowledge of terahertz-responsive materials and devices for innovative sensing, imaging, and communication systems.

Keywords: Spintronics, Quantum, Neuromorphic & Unconventional Computing, Nanomagnetics
Abstract: The magnetic skyrmion has distinct features like nanoscale size, particle-like behavior, low driving current, and topologically stable which makes it a suitable candidate for neuromorphic computing such as synapses and neurons. In comparison to ferromagnetic (FM) skyrmions, Synthetic antiferromagnetic (SAF) skyrmions have opposite bilayer coupling effect that allow them to follow the straight path along the nanotrack. In this work, an integrate and fire neuronal device model is proposed based on SAF skyrmions with voltage control magnetic anisotropy (VCMA) barrier for the tunability of the device. The utilization of skyrmion-skyrmion repulsion has been employed to replicate the integrate and fire (IF) mechanism. The tuning of the device threshold determined by the maximum number of pinned skyrmions at the barrier is achievable by adjusting the current density applied to the nanotrack. The neuron spikes occur when skyrmion surpasses the barrier. By increasing the threshold parameters, the device's operating current density can be reduced, leading to energy efficient. Moreover, the proposed neuron device has the energy dissipation of 0.19 pJ per spike operation thus, paving the path for developing energy-efficient devices in spintronics for next-generation neuromorphic computing.

Keywords: Nano-optics, Nano-photonics & Nano-optoelectronics, Nanomaterials, Nanofabrication

Keywords: Nano-optics, Nano-photonics & Nano-optoelectronics, Nanosensors & Nanoactuatuators, Modeling & Simulation
Abstract: In biosensing, label-free detection techniques have the advantage of a shorter analysis time and can be more cost-effective. In this paper a localized surface plasmon resonance (LSPR) sensor based on hexagonally arranged ellipsoidal gold nanoparticles is designed and investigated by finite element method (FEM) via COMSOL Multiphysics. The wave optics module was used to investigate the relationship between the geometrical properties of the nanoparticle arrangements and their refractive index sensitivity. The effect of different linearly and circularly polarized light was further investigated. The purpose of this work is to optimize the arrangement of experimentally realizable ellipsoidal gold nanoparticle arrangements to maximize the performance of the LSPR-based sensor device and to compare the simulation results with experimentally obtained sensitivities, and present detailed geometrical optimizations.

Keywords: Modeling & Simulation, Nanofabrication
Abstract: As CMOS devices continue to shrink, traditional bulk-based MOSFETs are facing physical limits. In addition, the process compatibility of SOI and bulk has been confirmed. We develop an SOI-based NMOS technology to evaluate the scalability and use the Technology Computer Aided Design (TCAD) simulation software for verification. We find that the threshold voltage (Vth) of the SOI NMOS samples is over 0.5 V. In this paper, we introduce the SOI technology and discuss the calibration of Vth in process simulation by doping phosphorus close to the oxide layer on the channel. First, we simulate the annealing rate to optimize the device characteristics, and then adjust the Vth with the channel doping of phosphorus. The simulation results show that before the gate oxide layer is deposited, doping with appropriate phosphorus concentration and implantation energy can effectively control Vth at 0.3 V, and achieve optimized subthreshold swing and maintain high Ion/Ioff ratio at the same time, which can be applied to low-power ICs.

Keywords: Nanofabrication, Nanorobotics & Nanomanufacturing, Nano-fluidics and integrated bio-chips
Abstract: Recent advanced industries such as display, semiconductor, micro sensors require the ultra-fine structures to increase the performance of device. The mechanical cutting is well-known simple process for manufacturing mold with fine structures. However, it is important to optimize cutting conditions while the machining load and tool friction deteriorate the machining results. In this research, ultra-precision end-milling is used to fabricate ultra-fine hole array with thin wall with width of 10 μm. The machining process is optimized by step-by-step machining to extract the cutting chip which can increase the cutting load, and it is confirmed by comparing machining load with one-pass machining to bottom of hole.

Keywords: Nanofabrication, Nano-optics, Nano-photonics & Nano-optoelectronics, Nanoelectronics: Emerging material and device challenges in futuristic systems
Abstract: Flexible perovskite solar cells (FPSCs) are ideal for indoor applications due to their lightweight and bendable nature. Polyethylene terephthalate (PET) is the preferred substrate for its cost-effectiveness and chemical stability. Our study presents highly efficient FPSCs on PET with two optimizations: anion mixing of the perovskite composition and interfacial engineering using tetrabutylammonium bromide (TBAB). This approach result in impressive efficiencies of 28.9% at 200 lx and a record 32.5% at 1000 lx. The spectroscopic techniques demonstrated the formation of a low-dimensional phase at the interface between the deposited perovskite material and the TBAB over-layer. This low-dimensional phase resulted in a more stable device, retaining 72% of its initial efficiency after 118 days of storage (ISOS-D1), compared to 29% for reference devices. Moreover, the cells maintained over 80% of their initial PCE after 1000 bending cycles.

Keywords: Fundamentals and applications of nanotubes, nanowires, quantum dots and other low dimensional materials
Abstract: — Encapsulation is a process typically applied to commercial photovoltaic devices, such as silicon and thin film solar cells and panels, to obtain device stability and duration. This paper shows preliminary results about graphene/Silicon Schottky junction solar cell encapsulation. The aim of the encapsulation process is to preserve the device from ageing, to protect graphene and, potentially, to stabilize the effects of nitric acid exposure which, notoriously, gives graphene p-doping but has the drawback to be a partially volatile effect for unprotected devices. Particular attention has to be devoted to find the best combination between encapsulating materials, process parameters and devices, preserving the integrity of graphene layers. The impact of encapsulating polymer on graphene was investigated through ab initio molecular dynamics simulations.

Keywords: Fundamentals and applications of nanotubes, nanowires, quantum dots and other low dimensional materials, Nanosensors & Nanoactuatuators, Nanoelectronics: Emerging material and device challenges in futuristic systems
Abstract: Sensitive gas sensors are a key requirement for a large number of applications. Two-dimensional (2D) materials exhibit excellent properties for low power consumption sensing devices due to their ultra-high surface-to-volume ratios. In this work, we used 2D materials such as black phosphorus (BP) for developing a field-effect transistor (FET) gas sensor. We demonstrated CO2-sensing performance at room temperature. A clear shift in current was observed during switching on and off the CO2 flow. The ability to enhance the sensor response by modulating the gate voltage highlights the advantage of our FETs over resistor-based sensors. Our results show that the proposed method is a promising strategy to improve 2D materials CO2 detector and has a potential for applications in advanced gas-sensing devices.

Keywords: Nanodiamond and nanocarbon structures: materials and devices, Nanomaterials, Fundamentals and applications of nanotubes, nanowires, quantum dots and other low dimensional materials

Keywords: Fundamentals and applications of nanotubes, nanowires, quantum dots and other low dimensional materials, Nanofabrication, Nano-biomedicine

Keywords: Nanofabrication, Nanodiamond and nanocarbon structures: materials and devices, Nanoelectronics: Emerging material and device challenges in futuristic systems

Keywords: Fundamentals and applications of nanotubes, nanowires, quantum dots and other low dimensional materials, Nanomaterials, Nano-optics, Nano-photonics & Nano-optoelectronics

Keywords: MEMS/NEMS, Nanofabrication

Keywords: Nano-optics, Nano-photonics & Nano-optoelectronics, Nano-biomedicine, Nanomaterials

Keywords: Nanomaterials, Fundamentals and applications of nanotubes, nanowires, quantum dots and other low dimensional materials, Education in nanotechnology

Keywords: Nano-optics, Nano-photonics & Nano-optoelectronics, Nanomaterials, Nanoenergy, Environment & Safety

Keywords: Nanosensors & Nanoactuatuators, Nanomaterials, Nanoelectronics: Emerging material and device challenges in futuristic systems

Keywords: Nanomaterials, Nanofabrication, Nanorobotics & Nanomanufacturing

Keywords: Spintronics, Modeling & Simulation