A5039064724- Perovskite Materials and Applications
- Advanced Memory and Neural Computing
- Conducting polymers and applications
- CCD and CMOS Imaging Sensors
- Organic Light-Emitting Diodes Research
- Quantum Dots Synthesis And Properties
- Gas Sensing Nanomaterials and Sensors
- Advanced Sensor and Energy Harvesting Materials
- Diamond and Carbon-based Materials Research
- Advanced Chemical Sensor Technologies
- Neural Networks and Reservoir Computing
- Transition Metal Oxide Nanomaterials
- Photoreceptor and optogenetics research
- Carbon Nanotubes in Composites
- Olfactory and Sensory Function Studies
- Microfluidic and Capillary Electrophoresis Applications
- Ga2O3 and related materials
- Biosensors and Analytical Detection
- Advanced Thermoelectric Materials and Devices
- Optical Wireless Communication Technologies
- Nanofabrication and Lithography Techniques
- Thin-Film Transistor Technologies
- Plasma Diagnostics and Applications
- Electrohydrodynamics and Fluid Dynamics
- Ferroelectric and Negative Capacitance Devices
Hong Kong University of Science and Technology
2021-2024
University of Hong Kong
2021-2024
HKUST Shenzhen Research Institute
2022
Nanjing University
2021
City University of Hong Kong, Shenzhen Research Institute
2021
Xi'an Jiaotong University
2011-2015
Abstract Spherical geometry, adaptive optics, and highly dense network of neurons bridging the eye with visual cortex, are primary features human eyes which enable wide field-of-view (FoV), low aberration, excellent adaptivity, preprocessing perceived information. Therefore, fabricating spherical artificial has garnered enormous scientific interest. However, fusing color vision, in-device optical adaptivity into always been a tremendous challenge. Herein, we demonstrate bionic comprising...
Metal halide perovskites have shown great promise as a potential candidate for next-generation solid state lighting and display technologies. However, generic organic ligand-free antisolvent-free solution method to fabricate highly efficient full-color perovskite light-emitting diodes has not been realized. Herein, by utilizing porous alumina membranes with ultra-small pore size templates, we successfully fabricated crystalline all-inorganic quantum wire arrays ultrahigh density excellent...
Abstract Electrochemical biosensors have emerged as one of the promising tools for tracking human body physiological dynamics via non‐invasive perspiration analysis. However, it remains a key challenge to integrate multiplexed sensors in highly controllable and reproducible manner achieve long‐term reliable biosensing, especially on flexible platforms. Herein, fully inkjet printed integrated biosensing patch with remarkably high stability sensitivity is reported first time. These desirable...
Garnering inspiration from biological compound eyes, artificial vision systems boasting a vivid range of diverse visual functional traits have come to the fore recently. However, most these rely on transformable electronics, which suffer complexity and constrained geometry global deformation, as well potential mismatches between optical detector units. Here, we present unique pinhole eye that combines three-dimensionally printed honeycomb structure with hemispherical, all-solid-state,...
Color tunability of perovskite light-emitting diodes (PeLEDs) by mixed halide compositional engineering is one the primary intriguing characteristics PeLEDs. However, PeLEDs are often susceptible to color red-shifting caused ion segregation. In this work, strongly quantum-confined nanowires (QPNWs) made CsPbBr3 grown in nanoporous anodic alumina templates using a closed space sublimation process. By tuning pore size with atomic layer deposition, QPNWs diameter 6.6 2.8 nm have been...
Abstract The high-density, vertically aligned retinal neuron array provides effective vision, a feature we aim to replicate with electronic devices. However, the conventional complementary metal-oxide-semiconductor (CMOS) image sensor, based on separate designs for sensing, memory, and processing units, limits its integration density. Moreover, redundant signal communication significantly increases energy consumption. Current neuromorphic devices integrating sensing show promise in various...
Infrared vision is highly desirable for applications in multifarious fields. Of the few species with this visual capability, snakes have exceptional infrared perception assistance of pit organs. Inspired by organ design we present here a hemispherical biomimetic imaging device. The devices use high-density ionic thermoelectric polymer nanowire arrays that serve as sensing nerve cells. individual nanowires exhibit notable voltage response to temperature variation test objects. An sensor array...
Fiber light-emitting diodes (Fi-LEDs), which can be used for wearable lighting and display devices, are one of the key components fiber/textile electronics. However, there exist a number impediments to overcome on device fabrication with fiber-like substrates, as well encapsulations. Here, we uniformly grew all-inorganic perovskite quantum wire arrays by filling high-density alumina nanopores surface Al fibers dip-coating process. With two-step evaporation method coat surrounding...
A tetrachromatic light sensor can detect in four independent color channels and extend its detection range beyond the visible spectrum. However, current sensors face challenges such as inability to work reliably extreme temperatures. In this work, we present a fully integrated tandem perovskite imaging system. Four layers of all-inorganic perovskites device serve ultraviolet, blue, green, red detectors discriminate spectral non-spectral colors. The image comprises 32 × color-selective pixel...
Perovskite nanopillars (PNPs) are propitious candidates for solar irradiation harvesting and potential alternatives to thin films in flexible photovoltaics. To realize efficient daily energy output, photovoltaics must absorb sunlight over a broad range of incident angles wavelengths congruent with the spectrum. Herein, we report highly periodic three-dimensional (3D) PNP-based possessing core–shell structure. The vertically aligned PNP arrays demonstrate up 95.70% 75.10% absorption at peak...
Artificial vision systems (AVS) have potential applications in visual prosthetics and artificially intelligent robotics, they require a preprocessor processor to mimic human vision. Halide perovskite (HP) is promising due its excellent photoresponse, ubiquitous charge migration pathways, innate hysteresis. However, the material instability associated with HP thin films hinders their utilization physical AVSs. Herein, we developed ultrahigh-density arrays of robust nanowires (NWs) rooted...
Abstract Metal halide perovskite materials have emerged as a promising class of semiconductors for high‐performance optoelectronic applications, particularly light‐emitting diodes (LEDs), due to their high quantum efficiency, facile color tunability, narrow emission line widths, well cost‐effectiveness. Despite the great successes on green and red LEDs (PeLEDs), external efficiency (EQE) blue PeLEDs still lags far behind that counterparts. Here, wavelength tunable pure deep with EQE are...
Vision is our dominant sense and also highly desired in artificial systems. In this article, we provide an overview of bio-inspired visual systems that utilize curved image sensors and/or photonic synapses. The use detector geometry ensures clear sensing abilities with fewer optical elements, which has the potential to lead miniaturization. Additionally, synapses integrate light neuromorphic preprocessing can reduce redundant modules signal communications. This results decreased device size...
Besides its ubiquitous applications in optoelectronics, halide-perovskites (HPs) have also carved a niche the domain of resistive switching memories (Re-RAMs). However owing to material and electrical instability challenges faced by HP thin-films, rarely perovskite Re-RAMs are used experimentally demonstrate data processing which is fundamental requirement for neuromorphic applications. Here, first time, lead-free, ultrahigh density nanowire (NW) array Re-RAM has been utilized image via...
This paper presents a high performance flexible nanogenerator based on P(VDF-TrFE) nanowire array that is capable of simultaneously harvesting mechanical and thermal energies. The was synthesized by template-wetting polymer into anodic aluminum oxide. oriented β crystalline phase the aligned nanowires formed from nanoconfinement in AAO template nanoporous has been demonstrated Fourier transform infrared (FT-IR) spectrum X-ray diffraction (XRD) measurements. Under periodic bending, electric...
Perovskite‐based memristors with tunable nonvolatile states are developed to mimic the synaptic interconnects of biological nervous systems and map neuromorphic computing networks integrated circuits. To emulate plasticity structures, robust multilevel resistive fabricated in this work using high‐density polycrystalline MAPbCl 3 nanowires (NWs) array that vertically solution method. In particular, exhibit both short‐ long‐term traits akin synapses. A memristor device is precisely programmed...