A5016044907- Radio Frequency Integrated Circuit Design
- Photoacoustic and Ultrasonic Imaging
- Analog and Mixed-Signal Circuit Design
- Thermography and Photoacoustic Techniques
- Advancements in PLL and VCO Technologies
- Advanced Optical Imaging Technologies
- Optical Imaging and Spectroscopy Techniques
- Ultra-Wideband Communications Technology
- Microwave Engineering and Waveguides
- Antenna Design and Analysis
- Advanced Sensor and Energy Harvesting Materials
- Acoustic Wave Resonator Technologies
- Wireless Body Area Networks
- Wireless Power Transfer Systems
- Neuroscience and Neural Engineering
- Ultrasound and Hyperthermia Applications
- Tactile and Sensory Interactions
- Low-power high-performance VLSI design
- Advancements in Semiconductor Devices and Circuit Design
- Energy Harvesting in Wireless Networks
- Advanced Memory and Neural Computing
- Ultrasonics and Acoustic Wave Propagation
- Nanoplatforms for cancer theranostics
- Advanced Antenna and Metasurface Technologies
- Virtual Reality Applications and Impacts
Nanyang Technological University
2016-2025
Yanshan University
2024
Eindhoven University of Technology
2023
Tsinghua University
2022
University of South Carolina
2021
Hong Kong Polytechnic University
2020
Singapore Polytechnic
2018
University of Macau
2017
Infineon Technologies (Singapore)
2017
Shanghai Advanced Research Institute
2016
A dual‐phase all‐inorganic composite CsPbBr 3 ‐CsPb 2 Br 5 is developed and applied as the emitting layer in LEDs, which exhibited a maximum luminance of 3853 cd m –2 , with current density (CE) ≈8.98 –1 external quantum efficiency (EQE) ≈2.21%, respectively. The parasite secondary phase CsPb nanoparticles on cubic nanocrystals could enhance by reducing diffusion length excitons one side, decrease trap band gap other side. In addition, introduction increase ionic conductivity barrier against...
Organic–inorganic hybrid perovskite materials with mixed cations have demonstrated tremendous advances in photovoltaics recently, by showing a significant enhancement of power conversion efficiency and improved stability. Inspired this development, study presents the facile synthesis mixed‐cation nanocrystals based on FA (1− x ) Cs PbBr 3 (FA = CH(NH 2 ). By detailed characterization their morphological, optical, physicochemical properties, it is found that emission property perovskite, ,...
Organic–inorganic lead halide perovskite materials have recently attracted much attention in the field of optoelectronic devices. Here, a hybrid piezoelectric nanogenerator based on composite formamidinium (FAPbBr 3 ) nanoparticles and polydimethylsiloxane polymer is fabricated. Piezoresponse force spectroscopy measurements reveal that FAPbBr contain well‐developed ferroelectric properties with high charge coefficient ( d 33 25 pmV −1 . The flexible device exhibits performance maximum...
A novel compact multiple-input multiple-output (MIMO) antenna is proposed with wideband gain enhancement. It consists of two identical elements spacing about half wavelength. First, a 1-to-2 Y-shaped power divider anti-phase outputs designed to feed modified Vivaldi radiators. The currents on the radiating surfaces keep same direction in increase radiation without being canceled. Second, square-ring unit cell analyzed form metasurface, placed front radiator. can guide forward electromagnetic...
A novel resonant tri-coil transducer is proposed to induce thermoacoustic (TA) signals for detecting rail internal defects. It consists of a ferrite plate-backed and its associated circuits, shielding layer, three-dimensional printed enclosure supporting securing. General TA detection theory illustrated understand how detect For achieving electromagnetic (EM) field shaping focusing, the physical structure optimized. reduces backward EM fields interference. Then, an equivalent circuit model...
Touch control intention recognition is an important direction for the future development of human-machine interactions (HMIs). However, implementation parallel-sensing functional modules generally requires a combination different logical blocks and circuits, which results in regional redundancy, redundant data, low efficiency. Here, location-and-pressure intelligent tactile sensor (LPI sensor) unprecedentedly combined with sensing, computing, logic proposed, enabling efficient...
An integrated CMOS ultrawideband wireless telemetry transceiver for wearable and implantable medical sensor applications is reported in this letter. This high duty cycled, noncoherent supports scalable data rate up to 10 Mb/s with energy efficiency of 0.35 nJ/bit 6.2 transmitter receiver, respectively. A prototype capsule endoscopy using the proposed demonstrated vivo image transmission 640 × 480 resolution at a frame 2.5 frames/s rate.
Abstract Precise and differential profiling of the dynamic correlations pathophysiological implications multiplex biological mediators with deep penetration highly programmed precision remain critical challenges in clinics. Here we present an innovative strategy by tailoring a powerful multispectral optoacoustic tomography (MSOT) technique photon-upconverting nanoprobe (UCN) for simultaneous visualization diversely endogenous redox biomarkers excellent spatiotemporal resolution living...
Neural prosthetics and personal healthcare have increasing need of high channel density low noise power neural sensor interfaces. The input referred quantization resolution are two essential factors which prevent conventional interfaces from simultaneously achieving a good efficiency factor consumption. In this paper, recording architecture with dynamic range folding current reuse techniques is proposed dedicated to solving the trade-off under voltage operation. Measured results silicon...
A bionic artificial device commonly integrates various distributed functional units to mimic the functions of biological sensory neural system, bringing intricate interconnections, complicated structure, and interference in signal transmission. Here we show an all-in-one nerve based on a separate electrical double-layers structure that perception, recognition, The features flexibility, rapid response (<21 ms), high robustness, excellent durability (>10,000 tests), personalized cutability, no...
The enhanced luminescence through semiconductor–metal interactions suggests the great potential of device performance improvement via properly tailored plasmonic nanostructures. Surface plasmon electroluminescence in an all-inorganic CsPbBr3 perovskite light-emitting diode (LED) is fabricated by decorating hole transport layer with synthesized Ag nanorods. An increase 42% and 43.3% luminance efficiency demonstrated for devices incorporated introduction indicates identical optoelectronic...
Abstract Prostheses and robots have been affecting all aspects of life. Making them conscious intelligent like humans is appealing exciting, while there a huge contrast between progress strong demand. An alternative strategy to develop an artificial peripheral neural system with high‐performance bionic receptors. Here, novel functional composite material that can serve as key ingredient simultaneously construct different exteroceptive sensors (AE sensors) proprioceptive (AP demonstrated....
A compact dual-polarized multiple-input-multiple- output (MIMO) Vivaldi antenna with a wide bandwidth, high gain, and isolation is proposed for wireless communications in intelligent Internet of Vehicles (IoV). It consists four identical orthogonally-crossed radiators, crossed-fishbone-shaped slot, metasurface lens, parasitic stubs, electromagnetic (EM) wave reflector, three-dimensional (3D) printed radome dielectric resonator (DR) array. These functional modules jointly contribute to...
Simple and rapid Young's modulus measurements of soft materials adaptable to various scenarios are general significance, they require miniaturized measurement platforms with easy operation. Despite the advances made in portable wearable approaches, acquiring analyzing multiple or complicated signals necessitate tethered bulky components careful preparation. Here, a new methodology based on self-locked stretchable strain sensor haptically quantify (kPa-MPa) rapidly is reported. The method...
Abstract Tactile technologies that can identify human body features are valuable in clinical diagnosis and human–machine interactions. Previously, cutting‐edge tactile platforms have been able to structured non‐living objects; however, identification of remains challenging mainly because the irregular contour heterogeneous spatial distribution softness. Here, freestanding scalable force‐softness bimodal sensor arrays developed, enabling gloves using machine‐learning methods. The sensors...
Abstract Intuitive, efficient, and unconstrained interactions require human–machine interfaces (HMIs) to accurately recognize users' manipulation intents. Susceptibility interference conditional usage mode of HMIs will lead poor experiences that limit their great interaction potential. Herein, a programmable ultrasensitive haptic interface enabling closed‐loop is reported. A cross‐scale architecture design strategy proposed fabricate the interface, which optimizes hierarchical contact...
Unlike conventional topological materials that carry states at their boundaries, higher-order are able to support boundaries of such as corners and hinges. While band topology has been recently extended into thermal diffusion for metamaterials, its realization is limited a 1D lattice, lacking access the topology. In this work, experimental reported insulator in generalized 2D lattice. The corner observed bandgap rate bulk, consequence anti-Hermitian nature Hamiltonian. protection these...
Rail foot corrosion is an important issue for electrified railway system. It usually initiates at the bottom of rail edges covered by a clip and hardly accessible to conventional online inspection systems. To address this problem, study combines air-coupled ultrasonic transducer (AUT) laser-induced guided wave detect corrosion. The sensitivity below 500 kHz examined considering impact clip. results have shown that A <sub xmlns:mml="http://www.w3.org/1998/Math/MathML"...
Quantitative and multiparametric blood analysis is of great clinical importance in cardiovascular disease diagnosis. Although there are various methods to extract information, they often require invasive procedures, lack continuity, involve bulky instruments, or have complicated testing procedures. Flexible sensors can realize on-skin assessment several vital signals, but generally exhibit limited function monitor characteristics. Here, we report a flexible optoacoustic 'stethoscope' for...
Abstract High‐precise, crosstalk‐free tactile perception offers an intuitive way for informative human‐machine interactions. However, the differentiation and labeling of touch position strength require substantial computational space due to cumbersome post‐processing parallel data. Herein, a programmable robust electronic skin (PR e‐skin) with event‐driven in‐sensor differential perception, solving inherent defects in von Neumann framework is introduced. The PR e‐skin realizes feature...
Abstract Robotic skins that integrate artificial tactile sensing elements can substantially complement the perception dimension of social robots, presenting an indispensable part in human‐robot interaction (HRI). However, existing design frameworks compromise between versatility and sustainability due to restricted range characteristics available for a single constituent. Here alterable robotic skin constructed from homogeneous units are proposed, capable cyclically realtering their inherent...