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Updated: Mar 28, 2026

Performing Spectroscopy on Plasmonic Nanoparticles with Transmission-Based Nomarski-Type Differential Interference Contrast Microscopy
Published on: June 5, 2019
Enhancing the plasmonic circular dichroism by entrapping chiral molecules at the core-shell interface of rod-shaped
Shuai Hou1, Jiao Yan1, Zhijian Hu2
1CAS Key Laboratory of Standardization and Measurement for Nanotechnology, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing 100190, China. wuxc@nanoctr.cn and University of the Chinese Academy of Sciences, Beijing 100049, China.
Abstract:
We report the enhancement of plasmonic circular dichroism (PCD) in cysteine-modified Au nanorods via Ag coating. The entrapment of cysteine at the Au-Ag interface effectively amplifies the local electromagnetic field and leads to strong enhancement of the PCD response. Ag coating on spherical nanoparticles modified with cysteine does not generate obvious PCD signals.

