The measurement of thermal conductivities anisotropic materials and atomically thin films is pivotal for the design next-generation electronic devices. Frequency-domain thermoreflectance (FDTR) a pump–probe technique that known its accurate straightforward approach to determining conductivity stands out as one most effective methodologies. Existing research has focused on advancing system incorporates beam-offset FDTR. In this approach, irradiation positions pump probe lasers are spatially...

Measurement of thermal conductivity in liquids and soft materials is pivotal across various sectors, from designing cooling systems for electronic devices to monitoring biological parameters via medical studying the properties tissues. Accurate measurements require high sensitivity, a flexible measurement device advantageous adapt shape sample. The 3ω method stands out as an ideal technique that meets these criteria, offering simple sensitive approach assess materials. In this study, we...

Non-contact and non-destructive methods are essential for accurately determining the thermophysical properties necessary optimal thermal design of semiconductor devices assessing materials with varying crystallinity across their thickness. Among these methods, frequency-domain thermoreflectance (FDTR) stands out as an effective technique evaluating characteristics nano/microscale specimens. FDTR varies penetration depth by modifying heating frequency, enabling a detailed analysis at...

Abstract This study proposes a nonlinear thermo-acoustic phase modulator for application in physical reservoir computing. We designed and fabricated the modulator, then investigated properties such as insertion loss modulation effects. Finally, we constructed system with proposed demonstrated benchmark tasks. The makes use of surface acoustic waves, which contributes to fast processing low power consumption. has waveguide also acts microheater. principle is wave-velocity reduction caused by...

Nanoscale cantilevers (nanocantilevers) made from carbon nanotubes (CNTs) provide tremendous benefits in sensing and electromagnetic applications. This nanoscale structure is generally fabricated using chemical vapor deposition and/or dielectrophoresis, which contain manual, time-consuming processes such as the placing of additional electrodes careful observation single-grown CNTs. Here, we demonstrate a simple Artificial Intelligence (AI)-assisted method for efficient fabrication massive...

Heat-conduction sheets, a type of thermal interface material consisting an elastomer matrix and thermally conducting fillers, require high conductivity. Diamond particles with conductivity are candidate for the filler in heat-conduction sheets. Electrical alignment is effective method to achieve In matrix, effect gravitational force crucial sedimented during polymerization lower this study, we investigated on electrical diamond diameters tens micrometers liquid polydimethylsiloxane their...

The thermal boundary resistance between an individual carbon nanotube and a Au surface was measured using microfabricated hot-film sensor. We used both closed open-ended multi-walled nanotubes obtained values of 0.947–1.22 × 107 K W − 1 1.43–1.76 1, respectively. Considering all uncertainties, including the contact area, conductances per unit area were calculated to be 8.6 107–2.2 108 m 2 for c-axis orientation 4.2 108–1.2 109 a-axis. trend in these agrees with predicted conductance...

Abstract In this study, we fabricate MXene transparent conductive films via a transfer process. The results show that the transferred using titanium carbide have ca. 100 times higher electrical conductivity than conventional spray-coated samples. Transparency and are easily controlled by changing amount of materials. scanning electron microscopy observations reveal smooth uniform flake network. closer interlayer distance flakes when compared to sample, which enables superior conductivity, is...

Carbon nanotube (CNT) thin-film transistors based on solution processing have great potential for use in future flexible and wearable device technologies. However, the considerable variability of their electrical characteristics remains a significant obstacle to practical use. In this work, we investigated origins these by performing statistical analysis spatial autocorrelation Monte Carlo simulation. The on-current decreased with increasing distance order millimetres, showing that...

Abstract Simultaneous controlling of the threshold voltage both p- and n-type transistors, comprising complementary integrated circuits, is required to develop low-voltage low-power flexible electronics. In this study, we report tuning carbon nanotube thin-film transistors with organic metal-ion complex salts as dopants, using device passivation secure air-stability. Chemical doping affords simple yet precise control dopant level enables voltages be finely tuned. Complementary inverters were...

This paper reports physical reservoir computing (PRC) using a single nonlinear electrostatic resonator and demonstrates its high memory capacity at "edge of chaos." The is simple doubly supported fabricated from silicon-on-insulator wafer. We proposed PRC system without feedback loop, in which relies on the decay time high-Q resonator. benchmark task results indicate that shows good linear capacities resonance maximum was obtained vicinity instability edge frequency response.

Abstract Stretchable devices, which can intimately contact dynamic free‐form surfaces, show great promise for wearable and implantable devices human beings multifunctional electronic skins soft robotics. Although some successful stretchable have been reported, there are still remaining issues; in particular, the fundamental requirements including low‐voltage operation, operation speed, mechanical stretchability robustness, easy circuit design, needed to be satisfied simultaneously. Here, a...

This study describes the concise exfoliation of multilayer Ti3C2T x MXene containing residual aluminum atoms. Treatment with tetramethylammonium base in a co-solvent tetrahydrofuran and H2O produced single-layer , which was confirmed via atomic force microscopy observations, an electrical conductivity 100+ times that prepared under previously reported conditions. The scanning electron X-ray diffraction measurements showed exfoliated MXenes were reconstructed to assembled large-domain layered...

Abstract This research explores the enhancement of resonator-based mass-sensor sensing performance through tunable nanomechanical resonators, focusing on ways to improve and control responsivity detection limit during operational stage. Two different tuning mechanisms are studied, namely electrostatic induced by gate voltage temperature change. The results indicate that resonance frequency nonlinearity in ultrathin resonators significantly improves sensor’s (up <?CDATA $\sim $?> <mml:math...

Large-diameter semiconductor single-wall carbon nanotubes (s-SWCNTs) have superior mobility and conductivity to small-diameter s-SWCNTs. However, the purification of s-SWCNTs with diameters larger than 1.6 nm by gel filtration has been difficult owing low selectivity conventional method in these large-diameter regions. We report a combination temperature-controlled gradient elution technique that we developed enrich high-purity s-SWCNT diameter as large 1.9 nm. The thin-film transistor (TFT)...

Abstract Semiconducting single-wall carbon nanotubes (s-SWCNTs) are promising materials with potential applications in thin-film transistors (TFTs). However, separation techniques required to obtain highly enriched s-SWCNTs since conventional as-grown SWCNTs a mixture of 70% semiconducting and 30% metallic SWCNTs. Here, we developed rapid single-step aqueous two-phase extraction high-purity using isomaltodextrin, which is cost-effective polysaccharide that contains large amount α...

This paper presents a control method intended to suppress the effects of manufacturing variations on nanomechanical systems. Often, resonance characteristics nanoscale devices are inconsistent, due unavoidable in fabrication process. is important because resonant vibrations enhance sensitivities devices. As such, these systems can be degraded if device not identified. To address this fundamental problem, multidisciplinary based theory, nanotechnology, and communication technology. A...

Abstract Stretchable triboelectric nanogenerators (s-TENGs) are promising power sources for self-powered wearable electronics. Conventional single-electrode s-TENGs require an external ground electrode to form a closed circuit. We propose in-plane dual-electrode s-TENG based on differential surface functionalization eliminate the electrode. The comprises fully stretchable materials such as carbon nanotube thin films and elastomers. top of elastomer was functionalized produce difference in...

The development of chemical doping methods for carbon nanotubes (CNTs) is essential various electronic applications. However, typical p-doping CNT thin-film transistors (TFTs), using oxygen and water from the atmosphere, are quite sensitive to changes in surrounding environment, thus, their poor temperature tolerance a critical problem during device fabrication. As p-dopant CNT–TFTs, we used 1,4,5,8,9,11-hexaazatriphenylenehexacarbonitrile (HATCN), which strong electron acceptor aromatic...

Nanogaps with a large working area and precisely controlled separation of about 1 to 20 nm has important applications in nano photonics, thermal management, power generation, chemical sensing, etc. However, an effective method fabricating such nanogaps not yet been established. In addition, it necessary evaluate the dependence physical characteristics on separation, but technically economically difficult develop system. this study, we developed MEMS device, which can produce parallel smooth...