Interdiffusion of Cadmium Arachidate in Langmuir-Blodgett films

Conference · Fri Dec 01 04:00:00 EST 1989

OSTI ID:5146912

Stroeve, P ^[1]; Rabolt, J F ^[2]; Hilleke, R O; Felcher, G P ^[3]; Chen, Sow-Hsin ^[4]

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1. California Univ., Davis, CA (USA). Dept. of Chemical Engineering
2. IBM Almaden Research Center, San Jose, CA (USA)
3. Argonne National Lab., IL (USA)
4. Massachusetts Inst. of Tech., Cambridge, MA (USA). Dept. of Nuclear Engineering

The interdiffusion of Cadmium Arachidate (CdA) in Langmuir-Blodgett films has been studied by neutron reflection at the Intense Pulsed Neutron Source of Argonne National Laboratory. One of the samples consisted of a few layers of perhydro H-CdA deposited on a silicon support, overlayered with a few layers of deuterated D-CdA, for a total thickness of {approximately}300 Angstroms. In a second sample the layers of perhydro- and deuterated-CdA were separated by two monolayers of H-n-octadecene/co-maleic acid copolymer. When heated for 15 minutes at 70{degrees}C, well below the disorder temperature, approximately 25% of the D-CdA molecules were replaced by H-CdA molecules, although the overall Langmuir-Blodgett film structure is known to remain unchanged. The presence of copolymer layers limited the interdiffusion process to about 5%. 11 refs., 2 figs.

• Research Organization: Argonne National Lab., IL (USA)
• Sponsoring Organization: DOE/ER
• DOE Contract Number: W-31109-ENG-38
• OSTI ID: 5146912
• Report Number(s): CONF-891119-73; ON: DE90005658
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360603* -- Materials-- Properties
656003 -- Condensed Matter Physics-- Interactions between Beams & Condensed Matter-- (1987-)
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
BARYONS
CADMIUM COMPOUNDS
CARBOXYLIC ACID SALTS
CARBOXYLIC ACIDS
DIFFUSION
EICOSANOIC ACID
ELEMENTARY PARTICLES
FERMIONS
FILMS
HADRONS
MONOCARBOXYLIC ACIDS
NEUTRONS
NUCLEONS
OPTICAL PROPERTIES
ORGANIC ACIDS
ORGANIC COMPOUNDS
PHYSICAL PROPERTIES
REFLECTIVITY
SURFACE PROPERTIES
THIN FILMS