A5055966744- Advanced Fiber Optic Sensors
- Gold and Silver Nanoparticles Synthesis and Applications
- Plasmonic and Surface Plasmon Research
- Mechanical and Optical Resonators
- Advanced MEMS and NEMS Technologies
- Force Microscopy Techniques and Applications
- Advanced Fiber Laser Technologies
- Photonic and Optical Devices
- Atomic and Subatomic Physics Research
- Radiation Detection and Scintillator Technologies
- Photonic Crystal and Fiber Optics
- Advanced Sensor and Energy Harvesting Materials
- Advanced Sensor Technologies Research
- Nonlinear Optical Materials Studies
- Wind and Air Flow Studies
- Photonic Crystals and Applications
- Medical Imaging Techniques and Applications
- Spectroscopy and Laser Applications
- Perovskite Materials and Applications
- Urban Heat Island Mitigation
- Semiconductor Lasers and Optical Devices
- Molecular Junctions and Nanostructures
- Building Energy and Comfort Optimization
Zhejiang University
2020-2024
State Key Laboratory of Modern Optical Instruments
2020-2023
Northwest University
2021-2022
Imperial College London
2018
Abstract Two-dimensional single crystal metals, in which the behavior of highly confined optical modes is intertwined with quantum phenomena, are sought after for next-generation technologies. Here, we report large area (>10 4 μm 2 ), two-dimensional gold flakes (2DGFs) thicknesses down to a nanometer level, employing an atomic-level precision chemical etching approach. The decrease thickness such scales leads quantization electronic states, endowing 2DGFs quantum-confinement-augmented...
Fiber-tip sensors based on the Fabry-Perot interferometer (FPI) are one of most widely used devices for temperature and pressure measurements in space-confined scenarios. However, deposited metal films with a polycrystalline structure tend to form microcracks under strain, which can undermine optical quality factor thus sensing performance these fiber-tip sensors. Here, we demonstrate an atomically smooth gold microflake (GMF)-enabled FPI sensor Q as high 628. Benefiting from reflectivity...
A compact and simple double F-P interference optical fiber optic gas pressure sensor based on suspended core structure is proposed demonstrated. The formed by splicing a Section of thin-walled grapefruit photonic crystal (G-PCF) with single-mode (SMF). By adjusting the special fusion parameters, short air-cavity region in G-PCF next to point SMF segment, other end segment open atmosphere. output spectrum comprises two spectral parameters that have different sensitivities temperature...
In this work, we present a discriminative optical fiber sensor for temperature and strain measurement. The comprises of two cascaded thermal regenerated Fiber Bragg gratings (RFBGs) incorporated with fused silica capillary tubes. RFBG <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> is loosely enclosed in fine tube made solely sensitivity to whereas the xmlns:xlink="http://www.w3.org/1999/xlink">1</sub> still retains its both temperature....
Highly sensitive and compact microforce sensors with piconewton-level resolution are essential in various fields. However, these face the challenge of delicate fabrication, expensive instruments, complicated signal processing. Here, we report an ultrasensitive sensor a nanonewton-scale working range (picobalance) using 500 nm diameter U-shaped silica optical nanofiber (ONF) as cantilever beam gold microflake sample tray. The ONF can detect its deflection upon by monitoring change...
Abstract Actuation of micro‐objects along unconstrained trajectories in van der Waals contacting systems—in the same capacity as optical tweezers to manipulate particles fluidic environments—remains a formidable challenge due lack effective methods overcome and exploit surface friction. Herein, technique that aims resolve this difficulty is proposed. This study shows that, by utilizing moderate power beam light, adhered on planar solid substrates can be precisely guided move arbitrary...
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Surface plasmons are usually excited by diffraction-limited optical methods with the use of bulky components, which greatly limit miniaturization and chip-scale high-density integration plasmonic devices. By integrating a nanostructure tunnel junction, modes in can be directly low-energy tunneling electrons, advantages including ultra-small footprint ultra-fast speed. In this mini-review, recent progress electric excitation localized propagating surface inelastic electron is overviewed.
Two-dimensional single-crystal metals are highly sought after for next-generation technologies. Here, we report large-area (>10^4 {\mu}m2), two-dimensional gold with thicknesses down to a single-nanometer level, employing an atomic-level-precision chemical etching approach. The ultrathin thickness and quality endow unique properties including significantly quantum-confinement-augmented optical nonlinearity, low sheet resistance, high transparency excellent mechanical flexibility. By...
Measurement of masses microscale objects or weak force with ultrahigh sensitivity (down to nanogram/piconewton level) and compact configuration is highly desired for fundamental research applications in various disciplines. Here, by using freestanding gold flakes high reflectivity (≈98% at 980 nm) as the sample tray silica microfibers extremely low spring constant (≈0.05 mN m