Accession Number : ADA275542
Title : Biosensors Based on Ultrathin Film Composite Membranes
Descriptive Note : Interim rept.
Corporate Author : COLORADO STATE UNIV FORT COLLINS DEPT OF CHEMISTRY
Personal Author(s) : Martin, Charles R ; Ballarin, Barbara ; Brumlik, Charles J ; Lawson, Del R
Report Date : 25 Jan 1994
Pagination or Media Count : 22
Abstract : This paper introduces a new approach for designing chemical sensors. This approach is based on a concept borrowed from the membrane-based separations area -- ultrathin film composite membranes. Ultrathin film composite membranes consist of an ultrathin (less than ca. 100 nm-thick) polymer skin coated onto the surface of a microporous support membrane. These composite membranes have made a tremendous impact on the field of membrane-based separations because they can offer high permeate flux without sacrificing chemical selectivity. These two qualities (high permeate flux and high chemical selectivity) are also required in polymeric barrier layers in chemical sensors. Therefore, the ultrathin film composite membrane concept should be applicable to sensor design. In this paper we present proof of this concept by showing the response characteristics of a prototype glucose sensor based on an ultrathin film composite membrane. Sensors, Glucose sensors, Ultrathin films.
Descriptors : *THIN FILMS , *POLYMERIC FILMS , *CHEMICAL DETECTION , IMPACT , PROTOTYPES , SURFACES , COATINGS , BARRIERS , MEMBRANES , BIOLOGICAL DETECTION , GLUCOSE
Subject Categories : Plastics
Miscellaneous Detection and Detectors
Distribution Statement : APPROVED FOR PUBLIC RELEASE