Tip-Enhanced Raman Scattering with a Nanoparticle-Functionalized Probe

Bulletin of the Korean chemical society

Han-Kyu Choi¹  Won-Hwa Park¹  Chan-Gyu Park¹  Ju-Young Kim¹  Jinwook Kim¹   Zee Hwan Kim¹  Eunbyoul Lee¹ 

关键词: Plasmons;    Nanoparticles;    Raman scattering;   

DOI  :  

学科分类：化学（综合）

来源: Korean Chemical Society

【 摘 要 】

We carried out the tip-enhanced Raman scattering (TERS) with a tip that is functionalized with a Aunanoparticle (AuNP, with a diameter of 250 nm). The AuNP tip is fabricated by a direct mechanical pickup of a AuNP from a flat substrate, and the TERS signal from the AuNP tip - organic monolayer - Au thin film (thickness of 10 nm) is recorded. We find that such a AuNP-tip interacting with a thin film routinely yields signal enhancement larger than ~104, which is sufficient not only for local (with detection area of ~200 nm2) Raman spectroscopy, but also the nanometric imaging of organic monolayers within a reasonable acquisition time (~20 minutes/image).

【 授权许可】

Unknown