A5010525985- Plasmonic and Surface Plasmon Research
- Gold and Silver Nanoparticles Synthesis and Applications
- Metamaterials and Metasurfaces Applications
- Copper-based nanomaterials and applications
- Nonlinear Optical Materials Studies
- Quantum Dots Synthesis And Properties
- Nanocluster Synthesis and Applications
- Thermal Radiation and Cooling Technologies
- Biosensors and Analytical Detection
- Advanced Chemical Sensor Technologies
- Advanced biosensing and bioanalysis techniques
- Polydiacetylene-based materials and applications
- Photonic and Optical Devices
- 2D Materials and Applications
- Advanced Antenna and Metasurface Technologies
- Terahertz technology and applications
- Nanofabrication and Lithography Techniques
- Strong Light-Matter Interactions
- Nanoporous metals and alloys
- Copper Interconnects and Reliability
Nanjing University of Science and Technology
2018-2024
Ministry of Industry and Information Technology
2024
We report a functionality-switchable terahertz polarization converter based on an L-shaped planar metamaterial arranged the graphene/hBN/Si/SiO2/Ag substrate. By dynamically controlling chemical potential of graphene sheet, we demonstrate functional switch from high-performance quarter-wave plate (ellipticity more than 0.97) to half-wave (PCR>97%) within working bandwidth 4.80 THz 5.10 THz. The physical mechanism our proposed active device is well explained both macroscopic and microscopic...
In the past decade, strong coupling of two-dimensional transition metal dichalcogenides (TMDs) with plasmonic and optical resonators has become an attractive field in cavity quantum electrodynamics. On one hand, how to enhance Rabi splitting such a system is important for applications. other underlying strong-coupling mechanism not clear yet, especially complicated case related multiple photonic quasiparticles. Here we propose plasmonic-optical hybrid resonator composed Au nanoantenna...
The manipulation of the interaction between molecules and photonic-plasmonic hybrid structures is critical for application surface-enhanced spectroscopy (SES). Herein, we report a study on mode coupling mechanism SES performance in typical optoplasmonic system constructed with polystyrene microsphere (PS MS) resonator gold nanoparticles (Au NPs). was found to be closely dependent relative positions PS MS, Au NPs, system, based which selectively enhanced Raman fluorescence signals can...
We report a planar metamaterial consisting of double-layer Archimedean spirals for circular dichroism (CD) study in the infrared band. A maximum CD value about 0.5 is designed by optimizing zoom coefficient, thickness and size combination upper bottom spirals. Different from almost all previous works, mechanism our proposed due to anisotropic absorption in-plane gap plasmon excited metal-dielectric-metal structure. Our model shows good performance may find useful applications biomedicine,...
We report the experimental and theoretical study on complementary planar metamaterial with asymmetrical air nanorods. Three high-quality samples are fabricated by focused ion beam technique. Multi-band Fano-like resonances selective electric field confinement in visible-near infrared range presented well explained bonding/anti-boding coupled mode theories of plasmonic resonators.
Considerable efforts have been dedicated to the development of low-cost and highly sensitive surface-enhanced Raman spectroscopy (SERS) substrates, which found applications in numerous fields. However, critical factors adhesion stability insufficiently addressed. Such as Ag dendrites (Ag D) recognized for their cost-effectiveness superior efficiency SERS nonetheless, issue weak substrate has remained a challenge. Herein, novel strategy fabricate planar silver dendrites-based with high is...
Recently, the quantum and quasi-quantum plasmonic systems have attractive much attention in surface-enhanced Raman scattering (SERS) study. The purpose of this work is to demonstrate a new system which simultaneously supports extremely squeezed electric field ability rough surface for signal amplification. This idea was implemented hybrid structure consisted by Au film, active molecules, alumina nano spacer, nanoparticles (Au NPs), where Nile Blue A (NBA) molecules were adsorbed on film via...
Recently, the quantum and quasi-quantum plasmonic systems have attractive much attention in design of surface-enhanced Raman scattering (SERS) substrate. The purpose this work is to experimentally demonstrate an idea introducing a rough spacer layer into system for obtaining enhanced SERS performance. This was implemented simple 3D structure containing Au film, active molecules, alumina layer, nanoparticles, where prepared by dropping method atomic deposition. hybrid with 4 nm demonstrated...