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.
Cricenti, A., Selci, S., Chiarotti, G., Amaldi, F. (1991). Imaging of single‐stranded DNA with the scanning tunneling microscope. In Journal of Vacuum Science & Technology B: Microelectronics and Nanometer Structures (pp.1285-1287). WOODBURY : AMER INST PHYSICS [10.1116/1.585222].
Imaging of single‐stranded DNA with the scanning tunneling microscope
AMALDI, FRANCESCO
1991-01-01
Abstract
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.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.