A5022741791- Graphene research and applications
- Nanopore and Nanochannel Transport Studies
- Nanowire Synthesis and Applications
- Anodic Oxide Films and Nanostructures
- Gas Sensing Nanomaterials and Sensors
- Nanofabrication and Lithography Techniques
- 2D Materials and Applications
- Advanced Sensor and Energy Harvesting Materials
- Microfluidic and Capillary Electrophoresis Applications
- Photonic and Optical Devices
- Advanced biosensing and bioanalysis techniques
- Terahertz technology and applications
- Advanced Memory and Neural Computing
- Space Satellite Systems and Control
- High voltage insulation and dielectric phenomena
- Carbon Nanotubes in Composites
- Advancements in Photolithography Techniques
- Thermal properties of materials
- Ion-surface interactions and analysis
- Analytical Chemistry and Sensors
- Microfluidic and Bio-sensing Technologies
- Advancements in Semiconductor Devices and Circuit Design
- Advanced Materials and Mechanics
- Photonic Crystals and Applications
- CCD and CMOS Imaging Sensors
Beijing Jiaotong University
2016-2025
Sichuan University
2024
West China Hospital of Sichuan University
2024
National Taiwan University
2024
China Electric Power Research Institute
2016-2024
Soochow University
2024
North China Electric Power University
2016-2024
China University of Mining and Technology
2024
Tsinghua University
2014-2023
Southern University of Science and Technology
2023
Mesostructured silica waveguide arrays were fabricated with a combination of acidic sol-gel block copolymer templating chemistry and soft lithography. Waveguiding was enabled by the use low-refractive index (1.15) mesoporous thin film support. When mesostructure doped laser dye rhodamine 6G, amplified spontaneous emission observed low pumping threshold 10 kilowatts per square centimeter, attributed to mesostructure's ability prevent aggregation molecules even at relatively high loadings...
Graphene is an ideal material for high-performance photodetectors because of its superior electronic and optical properties. However, graphene's weak absorption limits the photoresponsivity conventional based on planar (two-dimensional or 2D) back-gated graphene field-effect transistors (GFETs). Here, we report a self-rolled-up method to turn 2D buried-gate GFETs into three-dimensional (3D) tubular GFETs. Because field inside resonant microcavity enhanced light-graphene interaction area...
Abstract Optoelectronic synapses with information sensing, processing, and memory function are promoting the development of artificial visual perception systems. However, optoelectronic synapses' relatively inferior performance impedes their application in complex neuromorphic computing. Herein, based on 3D graphene/molybdenum disulfide (MoS 2 ) heterostructure field‐effect transistors developed by using double stress layer self‐rolled‐up method. The graphene, excellent electrical...
Current-carrying microcircuits can generate strong magnetic-field gradients; these gradients, in turn, control the position of magnetic microbeads aqueous suspension. Micromagnetic systems were prepared using two representative soft lithography techniques—micromolding capillaries and microtransfer molding—combined with electrodeposition. They capture from solution, hold them a fixed position, move along complex paths. Simply changing current flowing dynamically reconfigure The manipulation...
Arrays of nickel posts were used as magnetic elements in a microfiltration device that is compatible with microfluidic systems. The combination microtransfer molding—a soft lithography technique—and electrodeposition generated ∼7 μm height and ∼15 diameter inside channel. Once magnetized by field from an external, permanent, neodymium–iron–boron magnet, these strong gradients efficiently trapped superparamagnetic beads moving past them flowing stream water. These post arrays also to separate...
In order to incorporate the extraordinary intrinsic thermal, electrical, mechanical, and optical properties of graphene with three dimensional (3D) flexible substrates, we introduce a solvent-driven self-folding approach using graphene-polymer bilayers. A polymer (SU-8) film was spin coated atop chemically vapor deposited films on wafer substrates bilayers were patterned or without metal electrodes photolithography, thin deposition, etching. After patterning, released from they self-folded...
This paper describes a practical method for the fabrication of photomasks, masters, and stamps/molds used in soft lithography that minimizes need specialized equipment. In this method, CAD files are first printed onto using an office printer with resolution 600 dots/in. Photographic reduction these patterns transfers images 35-mm film or microfiche. These photographic films can be used, after development, as photomasks 1:1 contact photolithography. With resulting photoresist it is...
Microcontact printing (μCP) has been used to pattern octadecanephosphonic acid on the native oxide surface film of aluminum supported silicon or nitride-coated wafers. The patterned alkanephosphonic protects Al2O3/Al from etching in a solution containing phosphoric, acetic, and nitric acids water ratio 16:1:1:2 allows nonpatterned be removed selectively. structures resulting are continuous electrically conductive within each pattern, separated patterns isolated. Resistance measurements...
Small (100−600 μm in width) hexagonal polymeric plates with faces patterned into hydrophobic and hydrophilic regions, interacting through lateral capillary forces, were allowed to self-assemble at the perfluorodecalin/water interface. These fabricated from photoresist by shadow evaporation of gold onto selected faces. The arrays that assembled 100 objects similar structure those millimeter-sized analogous patterns faces, but three important differences. (i) contribution buoyancy forces...
Molybdenum disulfide (MoS2) is a promising candidate for the development of high-performance photodetectors, due to its excellent electric and optoelectronic properties. However, most reported MoS2 phototransistors have adopted back-gate field-effect transistor (FET) structure, requiring applied gate bias voltages as high 70 V, which made it impossible modulate each detecting device in fabricated array. In this paper, buried-gate FETs based on CVD-grown monolayer were their photoelectric...
Abstract Since respiration responds to many health conditions, it is essential monitor respiratory signals by constant humidity changes. Herein, a strategy for continuous, wireless, non‐invasive monitoring proposed using wireless energy storage and sensing integrated device (WES‐HSID), which includes charging coil (WCC), micro‐supercapacitors (MSCs) sensor. All electrodes of functional units are prepared all‐in‐one material, exhibits high conductivity (3 Ω cm −2 WCC sensor electrodes)...
Multiple-wavelength distributed-feedback lasers are made from multilayered composites by utilizing the solution-processing ease of cadmium selenide semiconductor nanocrystals and soft lithography. The Figure shows three types emission obtained such structures across a wide range visible spectrum: fluorescence (dotted lines), amplified spontaneous (dashed feedback-induced lasing (solid lines).
Abstract Sensitive solar-blind ultraviolet (UV) photodetectors are important to various military and civilian applications, such as flame sensors, missile interception, biological analysis, UV radiation monitoring below the ozone hole. In this paper, a photodetector based on buried-gate graphene field-effect transistor (GFET) decorated with titanium dioxide (TiO 2 ) nanoparticles (NPs) was demonstrated. Under illumination of 325-nm laser (spot size ~2 μm) total power 0.35 μW,...
Three-dimensional graphene FETs decorated with TiO<sub>2</sub> nanoparticles are used as high-sensitivity ultraviolet photodetectors tunable responsivity and response time.
A new approach based on a conjugated polymer/block copolymer guest/host system for the generation of polarized photoluminescence is reported. Synthetic modification poly(p-phenylene-ethynylene) (PPE) polymer used domain-specific incorporation into cylindrical morphology block host matrix. Subsequent ordering nanostructure via roll cast processing templates uniaxial alignment guest PPE. The ordered films are optically anisotropic displaying both absorption with dichroic ratio 3.0 at 440 nm...
A new cable-driven soft endoscopic system is designed for cardiac ablation in a minimally invasive manner this paper. The totally made of materials and has no rigid structures inside. In order to perform operation the limited pericardium, modified behavior-based control method inspired from animals applied system. Experiments are performed demonstrate concept prototype manipulation approaches feasible. As showed these experimental results, strong potential surgery.
Inverted-pyramid silicon nanopore arrays are realized with a well-controlled, three-step, anisotropic wet etching process different KOH bath temperatures. The influence of etchant concentration and temperature on the rate is investigated. Nanopore an average size 100 nm individual nanopores feature sizes as small 30 were successfully fabricated at low cost using this method. This study paves way toward controllable, large-scale production inverted-pyramid desired size.