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

Journal Article · Fri Dec 15 04:00:00 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 Laboratory (BNL), Upton, NY
• DOE Contract Number: AC02-76CH00016
• OSTI ID: 170273
• Journal Information: Journal of Colloid and Interface Science, Journal Name: Journal of Colloid and Interface Science Journal Issue: 2 Vol. 176; ISSN 0021-9797; ISSN JCISA5
• Country of Publication: United States
• Language: English

Related Subjects

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