A5100690994- Photonic and Optical Devices
- Advanced Fiber Optic Sensors
- Advanced Fiber Laser Technologies
- Optical Polarization and Ellipsometry
- Photonic Crystals and Applications
- Advanced Sensor and Energy Harvesting Materials
- Plasmonic and Surface Plasmon Research
- Semiconductor Lasers and Optical Devices
- Conducting polymers and applications
- Advanced Photonic Communication Systems
- 2D Materials and Applications
- Optical Network Technologies
- Emotion and Mood Recognition
- Graphene research and applications
- Metamaterials and Metasurfaces Applications
- Energy Harvesting in Wireless Networks
- Optical measurement and interference techniques
- Mental Health Research Topics
- Analytical Chemistry and Chromatography
- Boron and Carbon Nanomaterials Research
- Innovative Energy Harvesting Technologies
- Perovskite Materials and Applications
- TiO2 Photocatalysis and Solar Cells
- Optical and Acousto-Optic Technologies
- EEG and Brain-Computer Interfaces
Zhejiang University
2015-2024
Tianjin University of Science and Technology
2024
Guangxi University of Chinese Medicine
2024
First Affiliated Hospital Zhejiang University
2023
State Key Laboratory of Clean Energy Utilization
2022
Zhejiang Energy Research Institute
2022
Hangzhou Academy of Agricultural Sciences
2021
Hangzhou Xixi hospital
2019
University of Michigan–Ann Arbor
2012-2014
Institute of Microelectronics
2014
<b>Objective</b> To characterise the complete case series of influenza A/H7N9 infections as 27 May 2013, detected by China's national sentinel surveillance system for influenza-like illness. <b>Design</b> Case series. <b>Setting</b> Outpatient clinics and emergency departments 554 hospitals across 31 provinces in mainland China. <b>Cases</b> Infected individuals were identified through cross-referencing people who had laboratory confirmed infection with illness, where patients meeting World...
An ultra-compact silicon bandpass filter with wide bandwidth tunability is proposed and experimentally demonstrated. The architecture based on a multiple micro-ring resonator-cascaded structure. A (from 75 to 300 GHz) can be achieved by controlling the resonant frequency of microring resonators when good shape factor (0.24-0.44) held. has free spectral range (about 1.2 THz). center wavelength tuned over several nanometers linearly. footprint only 0.053 mm2.
Catalyst-free growth of wafer-scale h-BN few-layers is realized on sapphire substrates by the combination surface nitridation and N<sup>+</sup> sputtering.
A highly flexible free-standing Zn anode for ZIBs is fabricated from commercial paste, carbon nanotubes, and poly(vinylidene fluoride)-<italic>co</italic>-hexafluoropropylene <italic>via</italic> spin coating. with showed improved rate performances.
Dysphagia is a common and clinically significant complication of ischemic stroke. The prevalence risk factors for dysphagia may vary at different stages following an
We present a hybrid graphene-silicon waveguide, which consists of lateral slot waveguide with three layers graphene flakes inside. Through theoretical analysis, an effective index variation for about 0.05 is found in the by applying voltage on graphene. designed Mach-Zehnder modulator based this and demonstrated it can process signals nearly chirp-free. The calculation shows that driving only 1 V even if length arm shortened to be 43.54 μm. An extinction up 34.7 dB minimum chirp parameter...
In this letter, a broadband planar-lightwave-circuit-type graphene/glass hybrid waveguide polarizer has been demonstrated. The polarizing effect of the is based on difference in attenuation between two orthogonally polarized guided modes. buried depth and width ion-exchange glass are optimized to 2.6 11.5 μm, respectively. polarization extinction ratio ~27 dB telecommunication band with ~4-mm graphene coating length along propagation direction. addition, can be further increased by...
This study focuses on the stratification patterns and dynamic evolution of reservoir water temperatures, aiming to estimate reconstruct temperature field using limited noisy local measurement data. Due complex environments technical limitations, obtaining complete information for reservoirs is highly challenging. Therefore, accurately reconstructing from a small number data points has become critical scientific issue. To address this, employs Proper Orthogonal Decomposition (POD) sparse...
Stable and reliable electrical properties of interconnects interfaces between flexible/stretchable rigid materials/components are essential for the practical applications flexible electronic devices systems; traditional metal thin films hard solder can no longer meet these requirements. As an emerging soft conductive material, liquid has advantages high stretchability, flexibility, etc. over other soldering materials, it been used in some electronics. In this study, we report a detailed...
An integrated ultra-high-resolution ratio-metric wavelength monitor (RMWM) with compact size based on slope tunable Fano resonance is demonstrated silicon. The generated by adding an asymmetric microring inside and coupling the outer ring to produce a nonlinear phase shift. tunability achieved controlling microheaters adjust condition. Two embedded resonators (AEMR) are functioned as edge filters designed achieve "X-type" spectral response in particular range. ultra-high resolution of 0.8 pm...
We present an ultracompact electro-optic modulator with a length of 15 nm by utilizing permittivity-tunable metamaterial channel, which is composed alternative layers graphene and silica. Optical waves can propagate through the channel only if its permittivity tuned to be near zero. The finite-difference time-domain (FDTD) simulations show insertion loss roughly −0.27 dB while 3 extinction ratio obtained 0.8 V gate voltage. device's footprint as small 0.01 μm2. This consumes low power...
We developed a novel smart multi-channel two-dimensional (2-D) micro-gas chromatography (μGC) architecture that shows promise to significantly improve 2-D μGC performance. In the design, non-destructive on-column gas detector and flow routing system are installed between first dimensional separation column multiple second columns. The effluent from is monitored in real-time decision then made route one of columns for further separation. As compared conventional μGC, greatest benefit enhanced...
Emotion recognition is of great importance for artificial intelligence, robots, and medicine etc. Although many techniques have been developed emotion recognition, with certain successes, they rely heavily on complicated expensive equipment. Skin potential (SP) has recognized to be correlated human emotions a long time, but largely ignored due the lack systematic research. In this paper, we propose single SP-signal-based method recognition. Firstly, portable wireless device measure SP signal...
Energy harvesting and energy transmission are the key technologies for self-powered systems; thus, combination of these two is urgently needed. An innovative electric field resonance (EFR)-based wireless triboelectric nanogenerator (TENG) proposed herein. By integrating TENG with a capacitive coupler, output can be transmitted wirelessly from transmitter to receiver in form an oscillating signal energy-transfer efficiency 67.8% 5 cm distance. Theoretical models EFR-TENG system established,...
Abstract Early detection of bipolar depression (BPD) and major depressive disorder (MDD) has been challenging due to the lack reliable easily measurable biological markers. This study aimed investigate accuracy discriminating patients with mood disorders from healthy controls based on task state skin potential characteristics their correlation individual indicators oxidative stress. A total 77 BPD, 53 MDD, 79 were recruited. custom-made device, previously shown be sufficiently accurate, was...
We propose a new method to change the resonant status of microring by modifying light-absorption ability waveguide. A conception 2 × switch based on graphene-silicon-waveguide is presented inserting single graphene flake inside lateral slot The resonance procedure thoroughly blocked when tuned be zero-permittivity material, which significantly enhances waveguide's loss. Neither high quality factor nor large driving voltage needed. According numerical analysis, an extinction ratio for...
Generation of direct current (DC) electricity, especially from water, is extremely attractive. Here, by utilizing massive inherent polarized charges a lead zirconate titanate film, ferroelectric-based droplet electricity generator (FDEG) proposed to achieve efficient DC generation ionic droplets. The electrostatic field that originated the surface separates opposite polarities in solution. This separation process enables transportation positive lower electrode fluidity, while negative are...
Controlling the light transmission in epsilon-near-zero channel, which is covered by perfect-electric-conductor (PEC) walls, has been demonstrated [L. Yang, T. Hu, A. Shen, C. Pei, B. Dai, H. Yu, Y. Li, X. Jiang, and J. Opt. Lett. 39, 1909 (2014)]. In this work, we investigate possibility of replacing PEC some practical metal materials. Based on it, an ultracompact plasmonic switch with length 15 nm presented. Its highest extinction ratio more than 13 dB, while 3-dB obtained a 0.41 V gate voltage.
PT-symmetric optical systems have been widely researched in recent years and most of the researches are limited to weakly guiding condition. In this paper, we propose a method based on conventional coupled mode theory (CMT) describe coupling regardless conditions. With method, can examine unique PT characteristics design various structures.
The undercut long-wave infrared (LWIR) waveguide components with air-gap beneath are analyzed and fabricated on the Si-wafer simple manufacturing process. A 1 × 2 multimode interference (MMI) splitter based this structure is presented measured under 10.6 μm wavelength experimental setup. uniformity of MMI 0.76 dB. relationship among output power, slab thickness width also fully discussed. Furthermore, straight waveguides SOI platform for propagation loss evaluation. Ways to reduce discussed either.
An asymmetric embedded microring resonant system is proposed and fabricated on a silicon-on-insulator (SOI) to achieve slope tunable Fano resonances. The resonances originate from the nonlinear phase shift produced by adding an inner ring coupling with outer ring. of resonance can be well tuned ultra-high controlling microheaters adjust condition. Experimentally, we observe maximum extinction ratio about 40 dB, −35 dB nm−1 −93 nm−1, which shows good agreement theoretical analysis. This...