NEAR-FIELD OPTICS - MICROSCOPY WITH NANOMETER-SIZE FIELDS

被引:140
作者
DENK, W
POHL, DW
机构
来源
JOURNAL OF VACUUM SCIENCE & TECHNOLOGY B | 1991年 / 9卷 / 02期
关键词
D O I
10.1116/1.585558
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
The electromagnetic fields that can build up around metallic or dielectric pointed tips are of increasing interest in context with the new scanning probe microscopies (tunneling, near-field optics, Coulomb and van der Waals forces etc.). The paper presents exact solutions of Laplace's equations for the tip/sample geometry. For suitable media, plasmons are found whose electric fields are highly localized in the gap region. We believe that the field enhancement associated with such tip plasmons is instrumental for inelastic tunneling and light emission during scanning tunneling microscopy.
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页码:510 / 513
页数:4
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