Study of Langmuir-Blodgett layers by a depth-sensitive positron technique

Journal Article · Fri Dec 15 00:00:00 EST 1995 · Journal of Colloid and Interface Science

DOI:https://doi.org/10.1006/jcis.1995.9957· OSTI ID:170273

Szeles, C; Szpala, S; Lynn, K G ^[1]; Vertes, A; Kiss, E ^[2]

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1. Brookhaven National Lab., Upton, NY (United States). Dept. of Physics
2. Eoetvoes Univ., Budapest (Hungary)

Ferric and magnesium stearate Langmuir-Blodgett films deposited on silica glass were studied by variable-energy positron beam. Positrons signal the presence of the film even after deposition of only 3 monolayers. A signal with 3 and 9% higher S parameters values are characteristic for the ferric and magnesium stearate films, respectively. In addition, positrons were found to be sensitive to the chemical structure of the layers. The results suggest that positron beams could be promising probes of the thickness, composition, and adhesion of Langmuir-Blodgett films.

• Research Organization: Brookhaven National Lab. (BNL), Upton, NY (United States)
• DOE Contract Number: AC02-76CH00016
• OSTI ID: 170273
• Journal Information: Journal of Colloid and Interface Science, Vol. 176, Issue 2; Other Information: PBD: 15 Dec 1995
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
36 MATERIALS SCIENCE
STEARATES
MORPHOLOGY
IRON COMPOUNDS
MAGNESIUM COMPOUNDS
POSITRON BEAMS
EXPERIMENTAL DATA
DIAGNOSTIC TECHNIQUES
CHEMICAL COMPOSITION
THICKNESS
USES