About cookies on this site Our websites require some cookies to function properly (required). In addition, other cookies may be used with your consent to analyze site usage, improve the user experience and for advertising. For more information, please review your options. By visiting our website, you agree to our processing of information as described in IBM’sprivacy statement. To provide a smooth navigation, your cookie preferences will be shared across the IBM web domains listed here.
Publication
SPE ANTEC 1995
Conference paper
Mechanisms of liquid crystal alignment on buffed polyimide surfaces
Abstract
The surfaces of cured polyimide films, subjected to different buffing and cure profiles, have been examined by atomic force microscopy (AFM). The magnitude of a local stress applied to a polymer surface during buffing was estimated by imaging the surface tracks of buffing polymer fibers. Combining these experiments with a study of alignment characteristics of liquid crystals shows that the liquid crystal alignment is mainly caused by the oriented polymer chains which are formed most likely by the plastic deformation under the buffing stress