Year: 2012
Type: article
Abstract: 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 ${\sim}10^4$ , which is sufficient not only for local (with detection area of ~200 $nm^2$ ) Raman spectroscopy, but also the nanometric imaging of organic monolayers within a reasonable acquisition time (~20 minutes/image).
Authors: Chan-Gyu Park, Ju-Young Kim, Eun-Byoul Lee, Han-Kyu Choi, Won-Hwa Park, Jin-Wook Kim, Zee-Hwan Kim
Institutions: Korea University, LG (United States), LG (South Korea)
Language: English
Field: Materials Science
Domain: Physical Sciences
Open Access status: bronze
OpenAlex ID: W2008490333