A5078190084- Plasmonic and Surface Plasmon Research
- Photonic and Optical Devices
- Gold and Silver Nanoparticles Synthesis and Applications
- ZnO doping and properties
- Orbital Angular Momentum in Optics
- Magnetic confinement fusion research
- GaN-based semiconductor devices and materials
- Advanced Fiber Laser Technologies
- Nanofabrication and Lithography Techniques
- Optical Network Technologies
- Advanced Memory and Neural Computing
- Metal and Thin Film Mechanics
- Near-Field Optical Microscopy
- Ferroelectric and Negative Capacitance Devices
- Vacuum and Plasma Arcs
- Neural Networks and Reservoir Computing
- Metamaterials and Metasurfaces Applications
- Fusion materials and technologies
- Atomic and Subatomic Physics Research
- Advanced Fiber Optic Sensors
- Transition Metal Oxide Nanomaterials
- Advanced Frequency and Time Standards
- Advanced biosensing and bioanalysis techniques
- Quantum optics and atomic interactions
- Advanced Optical Sensing Technologies
China North Industries Group Corporation (China)
2021-2022
Peking University
2007-2020
Collaborative Innovation Center of Quantum Matter
2017
Institute of Microelectronics
2015
Hefei National Center for Physical Sciences at Nanoscale
2011
University of Science and Technology of China
2011
State Key Laboratory of Artificial Microstructure and Mesoscopic Physics
2007-2008
Southwestern Institute of Physics
2006-2007
Resistive switching random access memory (RRAM) is a leading candidate for next-generation nonvolatile and storage-class memories monolithic integration of logic with interleaved in multiple layers. To meet the increasing need device-circuit-system co-design optimization applications from digital systems to brain-inspired computing systems, SPICE model RRAM that can reproduce essential device physics circuit simulation environment required. In this work, we develop an capture all...
We describe a reliable fabrication procedure of silver tips for scanning tunneling microscope (STM) induced luminescence experiments. The tip was first etched electrochemically to yield sharp cone shape using selected electrolyte solutions and then sputter cleaned in ultrahigh vacuum remove surface oxidation. status, particular the plasmon mode its emission intensity, can be further tuned through field voltage pulse. quality thus fabricated not only offers atomically resolved STM imaging,...
A new multichannel HCN interferometer has been developed on HL-2A tokamak, which is characterized by two techniques: (1) the wave-guide laser with cavity length of 6 m to increase optical resource power and (2) high response room temperature waveguide Schottky diode detectors obtain good beat signal. The space resolution 7 cm use focusing metal mirrors mounted vacuum chamber a compensated system. In 2006 experiment campaign, this applied for plasma density profile sawtooth measurement.
Optical refractive index (RI) sensors, with the advantages of fast response, resistance to electromagnetic interference, and more options for signal collection, are widely used in biological fields. Compared metallic nanoparticle RI sensors based on localized surface plasmon resonance (SPR), nonmetallic nanomaterial leaky resonant scattering have high sensitivity, large sensing volume, good reliability, suitability biosensing. However, so far studies less reported. In this work, we study...
Nanoscale refractive index (RI) sensors based on a single nanorod or nanoantenna typically suffer from low figure of merit (FOM) due to the large full width at half-maximum plasmonic dipole resonance. Here, we demonstrate nanosensors with high FOM and sensing volume that is much smaller than λ3 using slot antennas. Two configurations, one bowtie antenna (BSA) pair (SAP), are proposed. The RI information obtained extinction dip interference surface plasmon polaritons (SPPs), which launched...
Morphology of threading dislocations (TDs) in GaN films with different resistivities grown on sapphire by means metal organic chemical vapor deposition has been investigated using transmission electron microscopy (TEM). are achieved at various annealing pressures the nucleation layer (NL). It is observed that TDs almost all straight and perpendicular to surface high-resistivity films, while they significantly bent interactive low-resistivity films. The analysis results based x-ray...
Abstract The photonic spin Hall effect, wherein left‐ and right‐handed circularly polarized components can be separated during transportation after reflection or refraction by an optical interface through spin–orbit interaction, has gained increasing attention from the scientific technological fields. Here, broadband subwavelength devices (PSHDs) are demonstrated on basis of L‐shaped slot antennas. A basic PSHD comprises two antennas with a footprint size 300 nm × 700 nm. angle between...
A U-shaped optical slot nanoantenna with a footprint size of 300 nm by is proposed to achieve invertible plasmonic spin-Hall effect at nanoscale. The interference between the SPPs excited different plasmon resonances in antenna enables nanostucture break spin degeneracy. Besides, SPP orbitals for two spins are while changing incident wavelength, which attributed dispersive phase shift antenna. intensity extinction ratio can be improved employing array. strong spin-orbit coupling property...
Abstract Optical displacement metrology is important in nanotechnology and used to identify positions displacements of nanodevices. Although several methods have been proposed, a sensor with ultracompact size, angstrom-scale resolution, large measurement range still lacking. We propose an optical wavelength modulation that can demonstrate subwavelength footprint angstrom-level resolution this study. The proposed consists two slot antennas. Surface plasmon polaritons (SPPs) are launched at...
Abstract A three-dimensional (3D) nanoscale optical router is a much-desired component in 3D stacked integrated circuits. However, existing routers based on dielectric configurations suffer from large footprints and plasmonic antennas only work 2D in-plane scene. Here, we propose experimentally demonstrate cross-layered all-optical with footprints. Optical slot antenna pairs are used to realize the routing of signals between different layers for arbitrary direction broadband wavelength...
Morphology and microstructure evolution of Al0.3Ga0.7N epilayers grown on GaN/sapphire templates with low-temperature (LT) AlN interlayers (IL) by means metal organic chemical vapor deposition have been investigated transmission electron microscopy atomic force microscopy. It is found that the IL improves surface morphology suppresses edge-type threading dislocations (TDs). When thickness 20nm, there lowest density TD 8.7×108cm−2. However, increases somewhat as to 40nm. believed two...
We experimentally study the radiation direction and relaxation rate of quantum emitters (QEs) coupled with a plasmonic waveguide integrated V-shaped traveling wave antenna. The couples excitation energy nearby QEs into surface plasmons connected antenna converts them highly directional radiation. directivity depends on shape half-power beam widths respect to azimuthal polar angles are as small 15.1° 13.1°, respectively, when has 144° intersection angle. rates enhanced up 33.04 times relative...
Optical displacement sensing with high resolution and noncontact detection plays an important role in nanometrology, nanofabrication, super-resolution microscopy. However, along arbitrary direction a two-dimensional (2D) plane angstrom-level precision remains challenging. Here, we propose 2D sensor composed of eight optical slot antennas. A tightly focused laser beam is illuminated upon the The amplitudes phases output radiation antennas are controlled by geometries. intensity distribution...