A5025319657- 2D Materials and Applications
- Nanofabrication and Lithography Techniques
- Plasmonic and Surface Plasmon Research
- Advanced Memory and Neural Computing
- Nanomaterials and Printing Technologies
- Advanced Sensor and Energy Harvesting Materials
- Graphene research and applications
- Perovskite Materials and Applications
- Nanowire Synthesis and Applications
- Gold and Silver Nanoparticles Synthesis and Applications
- Advanced Materials and Mechanics
- Metamaterials and Metasurfaces Applications
- Biosensors and Analytical Detection
- MXene and MAX Phase Materials
- Optical Coatings and Gratings
- Integrated Circuits and Semiconductor Failure Analysis
- Electrocatalysts for Energy Conversion
- Advanced battery technologies research
- Physical Unclonable Functions (PUFs) and Hardware Security
- Electrochemical Analysis and Applications
- Photonic and Optical Devices
- Quantum Dots Synthesis And Properties
- Fuel Cells and Related Materials
- Advancements in Photolithography Techniques
- Transition Metal Oxide Nanomaterials
Hunan University
2019-2024
Changsha University
2019
Institute of Physics
1990
The exact role of a defect structure on transition metal compounds for electrocatalytic oxygen evolution reaction (OER), which is very dynamic process, remains unclear. Studying the structure-activity relationship defective electrocatalysts under operando conditions crucial understanding their intrinsic mechanism and behavior sites. Co3O4 with rich vacancy (VO) has been reported to efficiently catalyze OER. Herein, we constructed pure spinel VO-rich as catalyst models study investigate sites...
Abstract Reliable fabrication of micro/nanostructures with sub-10 nm features is great significance for advancing nanoscience and nanotechnology. While the capability current complementary metal-oxide semiconductor (CMOS) chip manufacturing can produce structures on scale, many emerging applications, such as nano-optics, biosensing, quantum devices, also require ultrasmall down to single digital nanometers. In these CMOS-based methods are currently not feasible or appropriate due...
Abstract Optical encryption with multichannel, high complexity, and artistry characteristics has become one of the most significant approaches for modern information security. Recently emerged metasurface‐based optics consisting planar subwavelength metamaterials been engineered as an ideal platform optical because its capability manipulating various parameters enhancing storage capacity. However, limited encrypted channels insufficient real‐time abilities hinder practical applications. A...
Abstract Visual adaptation allows organisms to accurately perceive the external world even in dramatically changing environments, from dim starlight bright sunlight. In particular, polarization‐sensitive visual can effectively process polarized information that is ubiquitous nature. However, such an intriguing characteristic still remains a great challenge semiconductor devices. Herein, novel porous metal–organic‐framework phototransistor with anisotropic‐ReS 2 ‐based heterojunction...
A novel polarization-perceptual neuro-transistor with reconfigurable neuromorphic vision is proposed based on a 2D ReS 2 phototransistor. Polarized navigation learning ability and 3D visual polarization imaging are experimentally demonstrated for the first time.
Growth of large-area, uniform, and high-quality monolayer transition-metal dichalcogenides (TMDs) for practical industrial applications remains a long-standing challenge. The present study demonstrates modified predeposited chemical vapor deposition (CVD) process by employing an annealing procedure before sulfurization, which helps in achieving highly TMDs on various substrates. resulted molten liquid state the precursors CVD process, not only facilitated uniform redistribution precursor...
Photolithographic techniques, which are widely used in the silicon-based semiconductor industry, enable manufacture of high-yield and high-resolution features at micrometer nanometer scales. However, conventional photolithographic processes cannot accommodate micro/nanofabrication flexible stretchable electronics. In this study, a microfabrication approach that uses synthesized, environmentally friendly, dry-transferable photoresist to reliable conformal manufacturing thin-film electronics...
Abstract Memristors have attracted tremendous interest in the fields of high-density memory and neuromorphic computing. However, despite efforts that been devoted over recent years, high operating voltage, poor stability, large device variability remain key limitations for its practical application can be partially attributed to un-optimized interfaces between electrodes channel material. We demonstrate, first time, a van der Waals (vdW) memristor by physically sandwiching pre-fabricated...
Abstract There is an urgent need for novel processes that can integrate different functional nanostructures onto specific substrates, so as to meet the fast-growing broad applications in nanoelectronics, nanophotonics, and flexible optoelectronics. Existing direct-lithography methods are difficult use on flexible, nonplanar, biocompatible surfaces. Therefore, this fabrication usually accomplished by nanotransfer printing. However, large-scale integration of multiscale with unconventional...
Abstract Patterning of metallic nanogaps with ultrasmall gap size on arbitrary substrates is great importance for various applications in nanoelectronics, nanoplasmonics, and flexible optoelectronics. Common lithographic approaches suffer from limited resolution defining restrictive available stretchable devices. In this work, a process portfolio to overcome the above limitations proposed, enabling fabrication multiscale reduced specific functional The combines recently developed sketch peel...
Abstract Physical unclonable function (PUF) is promising for anticounterfeiting and security applications. In this paper, a PUF concept demonstrated based on the stochastic generation of nanodot matrix via mechanical stripping gold film kirigami with arrayed nanoscale split‐ring cuts. The random occurrence nanofracture metallic nanoconnection at parts results in unpredictable remaining (labeled as “1”) or peeling‐off “0”) nanodots each unit thus generates binary matrix. highest randomness,...
Abstract To enhance the efficiency of catalysis, it is crucial to comprehend behavior individual nanowires/nanosheets. A developed on-chip microcell facilitates this study by creating a reaction window that exposes catalyst region interest. However, technology’s potential application limited due frequently-observed variations in data between different cells. In study, we identify conductance problem windows non-metallic catalysts as cause issue. We investigate using in-situ...
Surface-enhanced Raman scattering (SERS) technology with the advantages of ultra-high sensitivity, non-destructive analysis, and quick measurement for molecular detection applications is receiving increasing attention. However, traditional rigid SERS substrates face challenges in in-suit conformal weak structure coupling effect real-life applications. Here we report a flexible polydimethylsiloxane (PDMS) substrate loaded plasmonic nanoparticle-on-a-mirror (NPOM) metasurface that featured...
Abstract Reliable fabrication of multiscale metallic patterns with precise geometry and size at both the nanoscale macroscale is importance for various applications in electronic optical devices. The existing processes, which usually involve film deposition combination electron-beam patterning, are either time-consuming or offer limited precision. Inspired by kirigami, an ancient handicraft art paper cutting, this work demonstrates patterning process structures significantly enhanced...
Fast neutron irradiation can induce discrete color centers in 2D hBN, without obvious aggregation at multilayer edges or grain boundaries.
Abstract Resist-based patterning solutions play essential roles in modern micro- and nanoscale science technology. The commonly used ‘resist’ strategy depends on selective-area scission or cross-linking of resist molecules under the action an energy beam. In this work, we propose demonstrate a different resist-patterning strategy, termed ‘resist nanokirigami’, which structures are defined by their outlines revealed selective mechanical peeling unwanted film. Unlike conventional resist-based...
Seeking sensitive, large-scale, and low-cost substrates is highly important for practical applications of surface-enhanced Raman scattering (SERS) technology. Noble metallic plasmonic nanostructures with dense hot spots are considered an effective construction to enable uniform, stable SERS performance thus have attracted wide attention in recent years. In this work, we reported a simple fabrication method achieve wafer-scale ultradense tilted staggered nanopillars filled numerous nanogaps...
In this work, we experimentally study the nonlinear absorption enhancement of saturable and two-photon on a hybrid structure comprising monolayer MoS2 Au nanoantennas via femtosecond I-scan measurement. Specifically, 13-fold increment in linear coefficient is attained at 1.85 eV, along with an 8-fold 1.65 which attributed to exciton-plasmon coupling resonance plasmonic hot electron transfer. The effect characterized by stable photoluminescence experiments. Furthermore, exciton recombination...
Transfer printing is a technology widely used in the production of flexible electronics and vertically stacked devices, which involves transfer predefined electronic components from rigid donor substrate to receiver with stamp, potentially avoiding limitations associated lithographic processes. However, stamps typically have several related unwanted organic solvents, substantial loading, film damage, inadequate adhesion switching ratios. This study introduces thermally responsive...
1D all-inorganic perovskites microwires horizontally aligned on mica show great potential in high performance optical and optoelectronic devices. In spite of the tremendous progress their growth properties studies, mechanism for epitaxy has not been well understood. Herein, we present a home-built situ monitoring system to study CsPbBr3 with physical vapor deposition (PVD). Through microwires, detailed behavior can be directly investigated. It is found that length rate may enhanced large...
The field confinement of plasmonic systems enables spectral tunability under structural variations or environmental perturbations, which is the principle for various applications including nanorulers, sensors, and color displays. Here, we propose demonstrate that materials with anomalous dispersion, such as Ge in visible, improve tunability. We introduce our proposal a semianalytical guided mode picture. Using Ge-based film (Ag/Au)-coupled gap plasmon resonators, implement two architectures...