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Analyst. 2013 Oct 7;138(19):5588-93. doi: 10.1039/c3an00808h.

Multilayered nano-prism vertex tips for tip-enhanced Raman spectroscopy and imaging.

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Department of Physics and Astronomy, Seoul National University, Seoul 151-747, Korea.


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.

[Indexed for MEDLINE]

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