A5101464669- Gas Sensing Nanomaterials and Sensors
- Nanowire Synthesis and Applications
- ZnO doping and properties
- Color Science and Applications
- Plasmonic and Surface Plasmon Research
- Visual perception and processing mechanisms
- Diamond and Carbon-based Materials Research
- Nanoplatforms for cancer theranostics
- Acoustic Wave Resonator Technologies
- Advanced Optical Imaging Technologies
- Graphene research and applications
- Ga2O3 and related materials
- High-pressure geophysics and materials
- Photonic and Optical Devices
- Tactile and Sensory Interactions
- Catalytic Processes in Materials Science
- Laser-Ablation Synthesis of Nanoparticles
- Carbon Nanotubes in Composites
- Image and Video Quality Assessment
- Optical Coatings and Gratings
- Photonic Crystals and Applications
- Cancer Cells and Metastasis
- Color perception and design
- Advanced Chemical Sensor Technologies
- Heat Transfer and Optimization
Sun Yat-sen University
2011-2024
University of Science and Technology of China
2019-2024
Advanced Laser Technology (United Kingdom)
2024
North University of China
2023
Laser Research Institute
2021
Beijing University of Chemical Technology
2021
Université Laval
2021
China University of Petroleum, Beijing
2010
State Key Laboratory of Optoelectronic Materials and Technology
2003-2008
Shenzhen University
2008
SnO2 nanowire gas sensors have been fabricated on Cd−Au comb-shaped interdigitating electrodes using thermal evaporation of the mixed powders and active carbon. The self-assembly grown excellent performance in sensor response to hydrogen concentration range 10 1000 ppm. This high is attributed large portion undercoordinated atoms surface nanowires. influence Debye length nanowires gap between examined discussed.
With advances in new materials and technologies, there has been increasing research focused on flexible sensors. However, most pressure sensors made using materials, it is challenging to achieve high detection sensitivity across a wide range. Although traditional silicon-based have good performance, they are not formable and, because of their rigidity brittleness, suitable for fitting with soft human skin, which limits application wearable devices collect various signals. Silicon...
Both electrical and field emission measurements were carried out to study the correlation between resistance performance of individual one-dimensional (1D) ZnO nanostructures. Three types 1D nanostructures investigated (i.e., agave-like shape, pencil-like hierarchical structure) prepared by thermal chemical vapor transport condensation without using any catalyst. The have obvious differences in thus conductivity from type type. In addition, same nanostructure, each emitter may also variation...
ZnO nanoparticle array has been fabricated on the Si substrate by a simple thermal chemical vapor transport and condensation without any metal catalysts. This nanoparticles is constructed from quantum dots (QDs), half-embedded in amorphous silicon oxide layer surface of substrate. The cathodoluminescence measurements showed that there pronounced blue-shift luminescence comparable to those bulk counterpart, which suggested originate QDs with small size where confinement effect can work well....
In pursuit of enhancing the display performance gamut extension algorithms across diverse image types while minimizing dependency, this study introduces a dynamic algorithm. The algorithm is designed to extend sRGB source towards wide laser display. To evaluate its effectiveness, psychophysical experiments were conducted using four distinct categories: complexions, scenery, objects, and color blocks bars. proposed was benchmarked against established mapping algorithms. comparative analysis...
Two-dimensional (2D) material-based van der Waals (vdW) heterostructures with exotic semiconducting properties have shown tremendous potential in next-generation photovoltaic photodetectors. Nevertheless, these vdW heterostructure devices inevitably suffer from a compromise between high sensitivity and fast response. Herein, an ingenious photodetector based on WSe2/WS2/p-Si dual-vdW heterojunction is demonstrated. First-principles calculations energy band profiles consolidate that the...
To have a clear insight into the diamond nucleation upon hydrothermal synthesis and reduction of carbide (HSRC), we performed thermodynamic approach on nanoscale to elucidate taking place in HSRC supercritical-fluid systems account capillary effect nanosized curvature critical nuclei, based carbon equilibrium phase diagram. These theoretical analyses showed that nanosize-induced interior pressure nuclei could drive metastable region new stable Accordingly, is preferable graphite formation...
The universal models of nucleation thermodynamics and growth kinetics were established for nanowire upon metal-catalyst-assisted thermal chemical vapor transport on the basis vapor-liquid-solid (VLS) mechanism. thermodynamic kinetic size limit was deduced from proposed model. Theoretical predictions are in agreement with experimental data.
Abstract We demonstrate an individual ZnO hexagonal microrod on the surface of Au substrate which can become new sources for manufacturing miniature plasmon lasers by polariton coupling to whispering-gallery modes (WGMs). also that rough substrates acquire a more satisfied enhancement emission if geometry is appropriate. Furthermore, we achieve high Q factor and super low threshold plasmonic WGM lasing from substrate, in reach 5790 0.45 KW/cm 2 lowest value reported date nanostructures...
ZnO semiconductors at the micro- and nanometre scales are attractive in optical, magnetic, electronic applications because of their particular features excellent properties. The whispering gallery mode (WGM) is a general effective type to amplify intensity luminescence emission, has gained extensive application lasing microcavities. In this contribution, we reported that smallest optical resonator been achieved an individual nanocone whose diameter gradually reduces from bottom top range 700...
Based on the nanothermodynamical approach, we performed thermodynamical predictions of nanodiamonds synthesized by pulsed-laser ablation in liquid. The analyses showed that formation with sizes 3–5 nm would be preferable to large pressure-temperature region 10–15 GPa and 4000–5000 K created a graphite target water carbon phase diagram. Meanwhile, probabilities transition from diamond are calculated rather high, up 10−3–10−2 same region. These theoretical results indicate liquid is expected...
Based on the carbon thermodynamic equilibrium phase diagram, a nanoscaled approach, taking effect of nanosize-induced additional pressure Gibbs free energy diamond critical nuclei and transition probability from graphite to into account, was performed elucidate nucleation nondiamond surfaces upon chemical vapor deposition (CVD). The theoretical analysis showed that capillary nanosize curvature could drive metastable region CVD new stable in diagram. Consequently, is preferable formation...
Lots of theories and experiments have so far tried to acquire the directional emission with whispering-gallery modes (WGMs) from micro- nanostructures, which will enhance applications nanoscaled resonators in optoelectronic devices. Here for first time we report a series patterns WGMs single ZnO hexagonal nanodisk. Based on cathodeluminescence technique, observed far-field emissions nanodisks four geometries different deformations. Mechanisms above were suggested. These investigations...
A general strategy for the fabrication of nanoscopic light sources is presented. In these high-index-contrast materials, confined and its intensity enhanced on nanometer scale because large discontinuity electric field at interfaces. Detailed facts importance to specialist readers are published as ”Supporting Information”. Such documents peer-reviewed, but not copy-edited or typeset. They made available submitted by authors. Please note: The publisher responsible content functionality any...
Geometrical diffuse reflection is a common optical phenomenon that occurs when reflecting surface has roughness of order hundreds micrometres. Light rays thus reflect uniformly in all directions with each ray obeying Snell's law. Of interest knowing what happens light reflects off surfaces nanometres. Here, by introducing nanoscaled on the hexagonal faces ZnO nanocavities, we observe luminescent profiles flowery patterns, replacing usual whispering gallery modes. The unique profile for these...
Based on the boron nitride thermodynamic equilibrium phase diagram, a analysis in nanoscale was proposed, with respect to effect of nanosize-induced additional pressure Gibbs free energy critical nuclei cubic (c-BN), elucidate nucleation c-BN high-pressure and high-temperature (HPHT) supercritical fluid system. Notably, our showed that surface tension induced by nanosize curvature could drive metastable region into stable diagram. Consequently, would be prior hexagonal (h-BN) competing...
The size-dependent morphological evolution of one-dimensional (1D) $\mathrm{Sn}{\mathrm{O}}_{2}$ nanostructures has been observed in experiment. It was found that the shape formations nanowire and nanobelt are size dependent, i.e., wire is favorable when less than $90\phantom{\rule{0.3em}{0ex}}\mathrm{nm}$ belt more $90\phantom{\rule{0.3em}{0ex}}\mathrm{nm}$, respectively, indicating a critical exists growth to determine their morphologies. nucleation thermodynamics, kinetics, transition...