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


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a275542.pdf


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