A5057989682- Advanced Sensor and Energy Harvesting Materials
- Conducting polymers and applications
- 2D Materials and Applications
- Graphene research and applications
- Tactile and Sensory Interactions
- ZnO doping and properties
- Nanowire Synthesis and Applications
- Gas Sensing Nanomaterials and Sensors
- Perovskite Materials and Applications
- Advanced Thermoelectric Materials and Devices
- Supercapacitor Materials and Fabrication
- Topological Materials and Phenomena
- GaN-based semiconductor devices and materials
- Innovative Energy Harvesting Technologies
- Chalcogenide Semiconductor Thin Films
- Thermal properties of materials
- Quantum and electron transport phenomena
- Quantum Dots Synthesis And Properties
- Advanced Memory and Neural Computing
- Advancements in Battery Materials
- Nanomaterials and Printing Technologies
- MXene and MAX Phase Materials
- Energy Harvesting in Wireless Networks
- Ga2O3 and related materials
- Advancements in Semiconductor Devices and Circuit Design
Purdue University West Lafayette
2016-2025
Imperial College London
2024
Regenstrief Institute
2018-2023
University of Southampton
2022
China Jiliang University
2020
Hong Kong Polytechnic University
2020
Flex (Mauritius)
2018-2019
Institute of Nanotechnology
2019
Tianjin University
2019
Georgia Institute of Technology
2009-2016
Transparent, flexible and high efficient power sources are important components of organic electronic optoelectronic devices. In this work, based on the principle previously demonstrated triboelectric generator, we demonstrate a new high-output, transparent nanogenerator by using polymer materials. We have fabricated three types regular uniform patterned arrays (line, cube, pyramid) to improve efficiency nanogenerator. The generation pyramid-featured device far surpassed that exhibited...
Designing, fabricating, and integrating arrays of nanodevices into a functional system are the key to transferring nanoscale science applicable nanotechnology. We report large-array three-dimensional (3D) circuitry integration piezotronic transistors based on vertical zinc oxide nanowires as an active taxel-addressable pressure/force sensor matrix for tactile imaging. Using piezoelectric polarization charges created at metal-semiconductor interface under strain gate/modulate transport...
Although MnO2 is a promising material for supercapacitors (SCs) due to its excellent electrochemical performance and natural abundance, wide application limited by poor electrical conductivity. Inspired our results that the activity conductivity of ZnO nanowires were greatly improved after hydrogenation, we designed fabricated hydrogenated single-crystal ZnO@amorphous ZnO-doped core-shell nanocables (HZM) on carbon cloth as SC electrodes, showing such areal capacitance 138.7 mF/cm(2)...
We report an innovative, large-area, and self-powered pressure mapping approach based on the triboelectric effect, which converts mechanical stimuli into electrical output signals. The working mechanism of active sensor (TEAS) was theoretically studied by both analytical method numerical calculation to gain intuitive understanding relationship between applied responsive Relying unique response characteristics open-circuit voltage short-circuit current, we realize static dynamic sensing a...
Abstract Next-generation polarized mid-infrared imaging systems generally requires miniaturization, integration, flexibility, good workability at room temperature and in severe environments, etc. Emerging two-dimensional materials provide another route to meet these demands, due the ease of integrating on complex structures, their native in-plane anisotropy crystal structure for high polarization photosensitivity, strong quantum confinement excellent photodetecting performances temperature....
Experimental demonstrations of 1D van der Waals material tellurium have been presented by Raman spectroscopy under strain and magneto-transport. measurements performed strains along different principle axes. Pronounced response c-axis is observed due to the strong intra-chain covalent bonds, while no obtained a-axis weak inter-chain interaction. Magneto-transport results further verify its anisotropic property, resulting in dramatically distinct magneto-resistance behaviors terms three...
Abstract Technology advancement that can provide new solutions and enable augmented capabilities to complementary metal–oxide–semiconductor (CMOS)-based technology, such as active adaptive interaction between machine human/ambient, is highly desired. Piezotronic nanodevices integrated systems exhibit potential in achieving these application goals. Utilizing the gating effect of piezopotential over carrier behaviors piezoelectric semiconductor materials under externally applied deformation,...
Recent advances achieved in triboelectric nanogenerators (TENG) focus on boosting power generation and conversion efficiency. Nevertheless, obstacles concerning economical biocompatible utilization of TENGs continue to prevail. Being an abundant natural biopolymer from marine crustacean shells, chitosan enables exciting opportunities for low-cost, biodegradable TENG applications related fields. Here, the development flexible based is presented first time. The physical chemical properties...
When water is passing through the air or an insulating tube, it will contain not only mechanical energy but also electrostatic due to existence of triboelectric charges on its surface as a result contact with air/solid surface. In this paper, hybrid nanogenerator (TENG) designed simultaneously harvest and energies flowing water. Water-TENG, mainly constructed by superhydrophobic TiO2 layer hierarchical micro/nanostructures, used collect (Output 1). Contact-TENG, composed...
Selenium has attracted intensive attention as a promising material candidate for future optoelectronic applications. However, selenium strong tendency to grow into nanowire forms due its anisotropic atomic structure, which largely hindered the exploration of potential In this work, using physical vapor deposition method, we have demonstrated synthesis large-size, high-quality 2D nanosheets, minimum thickness could be thin 5 nm. The Se nanosheet exhibits in-plane property, is determined by...
An unstable mechanical structure that can self-balance when perturbed is a superior choice for vibration energy harvesting and detection. In this work, suspended 3D spiral integrated with triboelectric nanogenerator (TENG) sensor applications. The newly designed vertical contact-separation mode TENG has wide working bandwidth of 30 Hz in low-frequency range maximum output power density 2.76 W/m(2) on load 6 MΩ. position an in-plane source was identified by placing TENGs at multiple positions...
Strain-gated flexible optoelectronics are reported based on monolayer MoS2 . Utilizing the piezoelectric polarization created at metal-MoS2 interface to modulate separation/transport of photogenerated carriers, piezophototronic effect is applied implement atomic-layer-thick phototransistor. Coupling between piezoelectricity and carriers may enable development novel optoelectronics.
A light-self-induced pyro-phototronic effect in wurtzite ZnO nanowires is proposed as an effective approach to achieve ultrafast response ultraviolet sensing p-Si/n-ZnO heterostructures. The relatively long response/recovery time of zinc-oxide-based sensors air/vacuum has been obstacle developing such detectors for practical applications. and photoresponsivity are greatly improved by the effect. As a service our authors readers, this journal provides supporting information supplied authors....
We present the first piezoelectric triggered mechanical-electronic logic operation using piezotronic effect, through which integrated mechanical actuation and electronic computation are achieved only ZnO nanowires (NWs). By utilizing potential created in a NW under externally applied deformation, strain-gated transistors (SGTs) have been fabricated. Using SGTs as building blocks, universal components such inverters, NAND, NOR, XOR gates demonstrated for performing calculations. Detailed...
Motion tracking is of great importance in a wide range fields such as automation, robotics, security, sports and entertainment. Here, self‐powered, single‐electrode‐based triboelectric sensor (TES) reported to accurately detect the movement moving object/body two dimensions. Based on coupling effect electrostatic induction, an object top surface polytetrafluoroethylene (PTFE) layer induces changes electrical potential patterned aluminum electrodes underneath. From measurements output...
This article presents an effective approach for patterned growth of vertically aligned ZnO nanowire (NW) arrays with high throughput and low cost at wafer scale without using cleanroom technology. Periodic hole patterns are generated laser interference lithography on substrates coated the photoresist SU-8. NWs selectively grown through holes via a low-temperature hydrothermal method catalyst superior control over orientation, location/density, as-synthesized morphology. The development...