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Imaging of single‐stranded DNA with the scanning tunneling microscope

 

作者: A. Cricenti,   S. Selci,   G. Chiarotti,   F. Amaldi,  

 

期刊: Journal of Vacuum Science&Technology B: Microelectronics and Nanometer Structures Processing, Measurement, and Phenomena  （AIP Available online 1991）
卷期: Volume 9, issue 2  

页码: 1285-1287

 

ISSN:1071-1023

 

年代: 1991

 

DOI:10.1116/1.585222

 

出版商: American Vacuum Society

 

关键词: DNA;ORGANIC COMPOUNDS;MIXTURES;GOLD;SUBSTRATES;IMAGES;SCANNING TUNNELING MICROSCOPY;HIGH−RESOLUTION METHODS

 

数据来源: AIP

 

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, presumably, to the bases of DNA, have sometimes been observed.

 

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