Abstract
Abstract We present a new method for preparing a silver probe for tip-enhanced near-field Raman spectroscopy. In this method, the probe is coated with silver colloids by a simple chemical reaction known as a mirror reaction. Silver particles ≈40 nm in diameter, which is ideal for localized surface plasmon excitation in the visible wavelength range, are formed at the tip apex with high reproducibility. Futhermore, tip-enhanced Raman spectra of single-walled carbon nanotubes were measured by using the probe.
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