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 | |
| Publication status | Published - Nov 1 2001 |
ASJC Scopus subject areas
- Analytical Chemistry
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Cite this
Lee, L. F., Schaller, R. D., Haber, L. H., & Saykally, R. J. (2001). High spatial resolution imaging with near-field scanning optical microscopy in liquids. Analytical Chemistry, 73(21), 5015-5019. https://doi.org/10.1021/ac010803k