Experimental analysis of the thermodynamic mechanism of Langmuir-Blodgett film transfer

Journal Article · Thu Mar 22 04:00:00 EST 1990 · Journal of Physical Chemistry; (USA)

DOI:https://doi.org/10.1021/j100369a054· OSTI ID:6548612

Egusa, Syun

An experimental investigation was made on the mechanism for the transfer of a Langmuir-Blodgett (LB) film. The transfer ratio ({rho}) and the interfacial force (f) were observed for stearyl alcohol and cadmium stearate monolayers on silicon substrates, by systematically varying both the surface pressures ({pi}) of the monolayer and the hydrophilicities of the substrate characterized by contact angle ({theta}{sub 0}). It was found that the ratios {rho} observed both for up- and down-stroke depositions changed discretely within zero and unity, divided at the critical values of {pi} and {theta}{sub 0}. To examine the film-transfer characteristics, on the basis of thermodynamics, the interfacial forces applied to the moving substrate were measured during the deposition process.

• OSTI ID: 6548612
• Journal Information: Journal of Physical Chemistry; (USA), Journal Name: Journal of Physical Chemistry; (USA) Vol. 94:6; ISSN 0022-3654; ISSN JPCHA
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
DATA
DATA ANALYSIS
ELEMENTS
EXPERIMENTAL DATA
FABRICATION
FILMS
INFORMATION
MEASURING INSTRUMENTS
MEASURING METHODS
NUMERICAL DATA
PHYSICAL PROPERTIES
SEMIMETALS
SILICON
SUBSTRATES
THERMODYNAMIC PROPERTIES
THIN FILMS