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

被引：18

作者：

Lee, LF ^{[1
]}

Schaller, RD ^{[1
]}

Haber, LH ^{[1
]}

Saykally, RJ ^{[1
]}

机构：

[1] Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA

来源：

ANALYTICAL CHEMISTRY | 2001年 / 73卷 / 21期

关键词：

D O I：

10.1021/ac010803k

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

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 (similar to 160 nm fwhm) was observed.

引用

页码：5015 / 5019

页数：5

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