Switching surface polarization of atomic force microscopy probe utilizing photoisomerization of photochromic molecules

Journal Article · Tue Mar 15 04:00:00 EDT 2011 · Journal of Applied Physics

DOI:https://doi.org/10.1063/1.3552926· OSTI ID:21538178

Aburaya, Yoshihiro; Nomura, Hikaru; Kageshima, Masami; Naitoh, Yoshitaka; Li, Yan Jun; Sugawara, Yasuhiro ^[1]

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1. Department of Applied Physics, Graduate School of Engineering, Osaka University 2-1 Yamada-oka, Suita, Osaka 565-0871 (Japan)

An attempt to develop an atomic force microscopy (AFM) probe with optically switchable polarization is described. Modification with a single molecular layer of photochromic molecules was attempted onto a Si substrate that is a prototype for a probe surface. Polarization switching caused by alternate irradiation of UV and visible lights were detected using the electrostatic force?>spectroscopy (EFS) technique. Si substrates modified with spiropyran and azobenzene exhibited reversible polarization switching that caused changes in CPD of about 100 and 50 mV, respectively. Modification with spiropyran was also attempted onto a Si probe and resulted in a CPD change of about 100 mV. It was confirmed that modification of an AFM probe or substrate with a single molecular layer of photochromic molecules can generate surface polarization switching of a mechanically detectable level.

• OSTI ID: 21538178
• Journal Information: Journal of Applied Physics, Journal Name: Journal of Applied Physics Journal Issue: 6 Vol. 109; ISSN JAPIAU; ISSN 0021-8979
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ATOMIC FORCE MICROSCOPY
CHEMICAL REACTIONS
CHEMISTRY
CYCLIZATION
EFFICIENCY
ELECTROMAGNETIC RADIATION
ELECTROSTATICS
INTERACTIONS
IRRADIATION
ISOMERIZATION
LAYERS
MICROSCOPY
MODIFICATIONS
MOLECULES
PHOTOCHEMISTRY
POLARIZATION
RADIATIONS
SPECTROSCOPY
SUBSTRATES
SURFACES
VISIBLE RADIATION