title: Multilayered nano-prism vertex tips for tip-enhanced Raman spectroscopy and imaging.
abstract: We presented a scalable fabrication method for the preparation of multilayered nano-prism vertex (NV)-tips whose dimensions can be controlled for tip-enhanced Raman spectroscopy (TERS). The NV-tip had sharp vertices (diameter ~20 nm) originated from the chemical lift-off process after the angle-grinding process, enabling high resolution imaging. TERS measurements were performed on brilliant cresyl blue (BCB) molecules using a Ag/Au NV-tip, revealing the enhanced field localization at the vertices of the NV-tip. Furthermore, we could observe the polarization effect of the NV-tip. Our NV-tips should be a powerful tool for basic research on TERS experiments and SPM applications.
authors.affiliation: Department of Physics and Astronomy, Seoul National University, Seoul 151-747, Korea.
authors.forename: Taekyeong
authors.initials: T
authors.lastname: Kim
authors.forename: Ki-Seok
authors.initials: KS
authors.lastname: Jeon
authors.forename: Kwang
authors.initials: K
authors.lastname: Heo
authors.forename: Hyung Min
authors.initials: HM
authors.lastname: Kim
authors.forename: Juhun
authors.initials: J
authors.lastname: Park
authors.forename: Yung Doug
authors.initials: YD
authors.lastname: Suh
authors.forename: Seunghun
authors.initials: S
authors.lastname: Hong
mesh_terms: D036103:Nanotechnology / Q000295:instrumentation* / Q000379:methods*; D013059:Spectrum Analysis, Raman / Q000295:instrumentation* / Q000379:methods*