IMAGING OF SINGLE-STRANDED-DNA WITH THE SCANNING TUNNELING MICROSCOPE

被引：22

作者：

CRICENTI, A

SELCI, S

CHIAROTTI, G

AMALDI, F

机构：

[1] UNIV ROMA TOR VERGATA, DIPARTIMENTO FIS, I-00073 ROME, ITALY

[2] UNIV ROMA TOR VERGATA, DIPARTIMENTO BIOL, I-00073 ROME, ITALY

来源：

JOURNAL OF VACUUM SCIENCE & TECHNOLOGY B | 1991年 / 9卷 / 02期

关键词：

D O I：

10.1116/1.585222

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：

Uncoated single-strand DNA mixed with BAC (benzyldimethylalkylammonium chloride) were deposited on gold substrates and imaged in air with the use of a high-resolution scanning tunneling microscope (STM). Constant-current and gap-modulated STM images showed both double- and single-stranded DNA. Along the single DNA backbone we have, tentatively, assigned small structures to phosphate and sugar group components; bumps aside single filaments, that correspond, presumbaly, to the bases DNA, have sometimes been observed.

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页码：1285 / 1287

页数：3

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