Xudong Cui
China Academy of Engineering Physics
44 Papers
154 Citations
Xudong Cui is an academic researcher from China Academy of Engineering Physics. The author has contributed to research in topics: Carbon nanotube & Plasmon. The author has an hindex of 9, co-authored 25 publications. Previous affiliations of Xudong Cui include ETH Zurich & University of Duisburg-Essen.
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Papers
Nanoscale roughness on metal surfaces can increase tip-enhanced Raman scattering by an order of magnitude.
TL;DR: Evidence is provided that nanoscale roughness can play a crucial role in the "hot sites" corresponding to single-molecule surface-enhanced Raman spectroscopy (SERS) and that a 2 nm high sharp step on the Au surface can significantly increase the enhancement.
180
Optical forces on metallic nanoparticles induced by a photonic nanojet
TL;DR: It is found that the optical forces acting on the nanoparticles depend strongly on the dielectric permittivity of the nanoparticle, as well as on the intensity and the beam width of the PNJ, which means that metallic sub-wavelength nanoparticle can be efficiently trapped by PNJs.
102
Tuning the resonance frequency of Ag-coated dielectric tips.
TL;DR: It is found that an Ag-coated low-refractive index dielectric tip provides the best Raman enhancement in the blue-green spectral range, consistent with prior experimental results.
48
Highly efficient nano-tips with metal : dielectric coatings for tip-enhanced spectroscopy applications
TL;DR: In this article, the performance of an Ag-coated dielectric tip in tip-enhanced Raman spectroscopy using 3D simulations was studied. And the authors found that a 5 nm layer of SiO2 can even improve the field enhancement of the tip.
33
Enhanced propagation in a plasmonic chain waveguide with nanoshell structures based on low- and high-order mode coupling.
Xudong Cui,Daniel Erni +1 more
TL;DR: It is shown that the choice of nanoshell particles allows an easy tuning of the structure's resonances according to given wavelength specifications and that the resonances are insensitive to the chain length when high-order multipolar modes are involved.
31