120 citations · 219 across the 12 of their papers we have counts for
13 papers
Tunable Mid-Infrared Chiral Selective Absorber Based on Asymmetric V-Shaped Metasurfaces Driven by Chiral quasi-Bound State in the Continum
Yuqing Liu, Yi Wang, Ruihan Ma +3
Efficient discrimination of circularly polarized light (CPL) is of great significance in photonics. In this study, we propose a nanophotonic device based on asymmetric V-shaped met…
Mechanisms of chiral plasmonics -- scattering, absorption and photoluminescence
Yuqing Cheng, Mengtao Sun
Chirality is a concept that one object is not superimposable on its mirror image by translation and rotation. In particular, chiral plasmonics have been widely investigated due to…
Unified Treatment for Scattering, Absorption, and Photoluminescence of coupled Metallic Nanoparticles with Vertical Polarized Excitation
Yuqing Cheng, Mengtao Sun
Optical properties of coupled metallic particles (MNPs) have been widely reported due to their unique characteristics such as peak shift/splitting of the coupling spectra and elect…
Absorption and photoluminescence properties of coupled plasmon-exciton (plexciton) systems
Yuqing Cheng, Mengtao Sun
Plexciton is the formation of new hybridized energy states originated from the coupling between plasmon and exciton. To reveal the optical properties of both exciton and plexciton,…
Unified Treatment for Scattering and Photoluminescence Properties of Strongly Coupled Metallic Nanoparticle Chains based on a Coupling Classic Harmonic Oscillator Model
Yuqing Cheng, Mengtao Sun
We present a multimer coupling classic harmonic oscillator model to reveal the scattering and photoluminescence (PL) properties of metallic nanoparticle chains. Taking particle num…
Understanding photoluminescence of coupled metallic nanostructures based on a coupling classic harmonic oscillator model
Yuqing Cheng, Mengtao Sun
Photoluminescence (PL) phenomenon from metallic nanostructures has been explained and understood by several point of views. One of them is based on the classic harmonic oscillator…
Plasmon-Enhanced Interface Charge Transfer Exciton of 2D In-Plane Lateral and van Der Waals MoS/WS Heterostructures
Xijiao Mu, Mengtao Sun
The multi-scale computational method of combining first-principles calculation and finite element electromagnetic simulations is used to study plasmon-enhanced interlayer charge tr…
Visualizations of electric and magnetic interactions in ECD and ROA
Jingang Wang, Xiangtao Chen, Jizhe Song +2
The chiral source and its mechanism in the molecular system are of great significance in many fields. In this work, we proposed visualized methods to investigate physical mechanism…
Ultrafast Dynamics of Plasmon-Exciton Interaction of Ag Nanowire-Graphene Hybrids for Surface Catalytic Reactions
Qianqian Ding, Ying Shi, Maodu Chen +5
Using the ultrafast pump-probe transient absorption spectroscopy, the femtosecond-resolved plasmon-exciton interaction of graphene-Ag nanowire hybrids is experimentally investigate…
Formation of Enhanced Uniform Chiral Fields in Symmetric Dimer Nanostructures
Xiaorui Tian, Yurui Fang, Mengtao Sun
Chiral fields with large optical chirality are very important in chiral molecules analysis, sensing and other measurements. Plasmonic nanostructures have been proposed to realize s…
Ultralong Lifetime Plasmons on Picosecond Time Scale Enabled by Hybrid Plasmon-Phonon Polaritons
Xiaoxia Yang, Feng Zhai, Hai Hu +4
Graphene plasmonics is of great interest for compact optical devices working in broad frequency domains with ultrahigh speed and very low energy consumption. However, graphene plas…
Effects of Electric Field Gradient on Sub-nanometer Spatial Resolution of Tip-enhanced Raman Spectroscopy
Lingyan Meng, Zhilin Yang, Jianing Chen +1
Tip-enhanced Raman spectroscopy (TERS) with sub-nanometer spatial resolution has been recently demonstrated experimentally. However, the physical mechanism underlying is still unde…
Activated Vibrational Modes and Fermi Resonance in Tip-Enhanced Raman Spectroscopy
Mengtao Sun, Yurui Fang, Zhenyu Zhang +1
Using p-aminothiophenol (PATP) molecules on a gold substrate as prototypical examples and high vacuum tip-enhanced Raman spectroscopy (HV-TERS), we show that the vibrational spectr…