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

L. F. Lee; R. D. Schaller; L. H. Haber; R. J. Saykally

doi:10.1021/ac010803k

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

L. F. Lee, R. D. Schaller, L. H. Haber, R. J. Saykally

Northwestern University, Argonne National Laboratory

Research output: Contribution to journal › Article › peer-review

20 Citations (Scopus)

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.

Original language	English
Pages (from-to)	5015-5019
Number of pages	5
Journal	Analytical Chemistry
Volume	73
Issue number	21
DOIs	https://doi.org/10.1021/ac010803k
Publication status	Published - Nov 1 2001

ASJC Scopus subject areas

Analytical Chemistry

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10.1021/ac010803k

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