Title

High spatial resolution imaging with near-field scanning optical microscopy in liquids

Document Type

Article

Publication Date

11-1-2001

Abstract

The mechanism of tuning fork-based shear-force near-field scanning optical microscopy is investigated to determine optimal experimental conditions for imaging soft samples immersed in liquid. High feedback sensitivity and stability are obtained when only the fiber probe, i.e., excluding the tuning fork prongs, is immersed in solution, which also avoids electrical shorting in conductive (i.e., buffer) solutions. Images of MEH-PPV were obtained with comparable spatial resolution in both air and water. High optical resolution (∼160 nm fwhm) was observed.

Publication Source (Journal or Book title)

Analytical Chemistry

First Page

5015

Last Page

5019

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