Results 41 to 50 of about 34,551 (258)
Phonon transport unveils the prevalent point defects in GaN
, 2017 Determining the types and concentrations of vacancies present in intentionally doped GaN is a notoriously difficult and long-debated problem. Here we use an unconventional approach, based on thermal transport modeling, to determine the prevalence of ...
Carrete, Jesús +4 more
core +1 more source
Advanced Functional Materials, EarlyView.Flexible piezoresistive pressure sensors underpin wearable and soft electronics. This review links sensing physics, including contact resistance modulation, quantum tunneling and percolation, to unified materials/structure design. We highlight composite and graded architectures, interfacial/porous engineering, and microstructured 3D conductive networks
Feng Luo +2 more
wiley +1 more source
Discover ElectronicsA thorough investigation of Gallium Nitride and Aluminum Nitride-on-Gallium Nitride Junction Barrier Schottky diodes, focusing on inter-p + spacings of 0.5 to 2.5 μm, was conducted to optimize the performance for high-power, high-frequency, and high ...
Sana Nasir, Gul Hassan, Habib Ahmad
doaj +1 more source
The Journal of Engineering, 2015 The authors have investigated the impact of nanowire geometry on the carrier transport in axial indium gallium nitride and gallium nitride (InGaN/GaN) nanowire light-emitting diodes (LEDs). The results reveal that hole transport depends critically on the
Shaofei Zhang +3 more
doaj +1 more source
Gallium phosphide photonic crystal nanocavities in the visible [PDF]
, 2008 Photonic crystal nanocavities at visible wavelengths are fabricated in a high refractive index (n>3.2) gallium phosphide membrane. The cavities are probed via a cross-polarized reflectivity measurement and show resonances at wavelengths as low as 645 nm ...
Faraon, Andrei +2 more
core
Phase-change chalcogenide glass metamaterial [PDF]
, 2009 Combining metamaterials with functional media brings a new dimension to their performance. Here we demonstrate substantial resonance frequency tuning in a photonic metamaterial hybridized with an electrically/optically switchable chalcogenide glass.
B. Gholipour +9 more
core +1 more source
Advanced Healthcare Materials, EarlyView.This review highlights recent advances in smart face masks that actively monitor breathing. By integrating humidity, gas, temperature, pressure, strain, and triboelectric sensors, these masks track key respiratory parameters in real time. The article summarizes sensor mechanisms, compares performance across studies, and discusses challenges and future ...
Negin Faramarzi +7 more
wiley +1 more source
AIP Advances, 2019 Thermal performance of nanomaterials has always been a significant part of semiconductor research, which is the key problem in the development and design of various micro/nanoelectronic devices.
Linli Zhu +3 more
doaj +1 more source
Solid-state metathesis reactions under pressure: A rapid route to crystalline gallium nitride [PDF]
, 1998 High pressure chemistry has traditionally involved applying pressure and increasing temperature until conditions become thermodynamically favorable for phase transitions or reactions to occur.
Heath, James R. +6 more
core +1 more source
Advanced Materials, EarlyView.Transition metal oxy/carbo‐nitrides show great promise as catalysts for sustainable processes. A Mn‐Mo mixed‐metal oxynitride attains remarkable performance for the direct synthesis of acetonitrile, an important commodity chemical, via sequential C─N and C─C coupling from syngas (C1) and ammonia (N1) feedstocks.
M. Elena Martínez‐Monje +7 more
wiley +1 more source