Published May 2, 1994
| Version v1
Journal article
Observed frustration in confined block copolymers
- 1. IBM Research Division, Almaden Research Center, 650 Harry Road, San Jose, California 95120-6099 (United States)
- 2. Department of Materials Science and Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139 (United States)
- 3. Reactor and Radiation Division, National Institute for Standards Technology, Gaithersburg, Maryland 60439 (United States)
Description
Symmetric diblock copolymers confined between two solid surfaces were studied by neutron reflectivity. A multilayered morphology with an integral number of layers oriented parallel to the solid interfaces was found in all cases. The period of the confined multilayers deviated from the bulk period in a cyclic manner as a function of the confined film thickness. A first-order transition occurred between the expanded and contracted states of the copolymer chains. The data suggest that the deviation of the period from the bulk value decreases with increasing separation distance
Additional details
Publishing Information
- Journal Title
- Physical Review Letters
- Journal Volume
- 72
- Journal Issue
- 18
- Journal Page Range
- p. 2899-2902.
- ISSN
- 0031-9007
- CODEN
- PRLTAO
INIS
- Country of Publication
- United States
- Country of Input or Organization
- United States
- INIS RN
- 25057859
- Subject category
- S36: MATERIALS SCIENCE; S75: CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY;
- Descriptors DEI
- CONFINEMENT; COPOLYMERS; INTERFACES; LAYERS; MORPHOLOGY; NEUTRON DIFFRACTION; ORDER-DISORDER TRANSFORMATIONS; SURFACE PROPERTIES; THIN FILMS
- Descriptors DEC
- COHERENT SCATTERING; DIFFRACTION; FILMS; ORGANIC COMPOUNDS; ORGANIC POLYMERS; PHASE TRANSFORMATIONS; POLYMERS; SCATTERING