Open AccessSTRUCTURAL TRANSITION IN ORGANIC THIN FILMS FOR NANOMETER SCALE DATA RECORDING
Author(s) -
Shi Dongxia,
Dechun Ba,
Pang Shi-Jin,
Yanlin Song,
Hongjun Gao
Publication year - 2001
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.50.990
Subject(s) - materials science , thin film , scanning tunneling microscope , nanometre , highly oriented pyrolytic graphite , pyrolytic carbon , substrate (aquarium) , quantum tunnelling , nanotechnology , graphite , condensed matter physics , chemical physics , optoelectronics , composite material , chemical engineering , chemistry , physics , oceanography , pyrolysis , geology , engineering
Nanometer scale data recording has been achieved on p-nitrobenzonitrile thin films using scanning tunneling microscopy.When a series of voltage pulse is applied between the STM tip and the highly ordered pyrolytic graphite substrate, structural transition at molecular scale has been observed directly for PNBN thin films.The recording mechanism is attributed to local structural transition at molecular scale,i.e.,from a crystalline state to a disordered one.The former corresponds to a high electrical resistance,and the latter to a low resistance.