Accession Number : ADA309004

Title :   Bio-Mimetic Routes to Optical and Electronic Composites and Ceramics.

Descriptive Note : Final rept. 1 Jun 92-31 Dec 95,

Corporate Author : ARIZONA UNIV TUCSON COLL OF ENGINEERING AND MINES

Personal Author(s) : Calvert, Paul ; Birnie, Dunbar

PDF Url : ADA309004

Report Date : 10 MAY 1996

Pagination or Media Count : 17

Abstract : Polymer films containing non-centrosymmetric crystals have been prepared and characterized by second harmonic generation. Combinations of water-soluble polymers and KDP or ADP produced good films. Efforts were made to extend this method to lead titanate, lead zirconate titanate and potassium titanyl phosphate. These materials were successfully produced as crystalline thin films via sol-gel chemistry with a high temperature annealing step. Composite films could be produced of these materials in amorphous form in polymers, but we did not yet succeed in crystallizing the inorganic material under hydrothermal conditions within the polymer. Bacterial threads, which have a highly phosphated cell wall, were also used as a support for the controlled growth of KDP powders and the resultant composites characterized by SHG.

Descriptors :   *NEURAL NETS, *COMPOSITE MATERIALS, *CERAMIC MATERIALS, *POLYMERIC FILMS, ANNEALING, SECOND HARMONIC GENERATION, BACTERIA, POLYMERS, THIN FILMS, CRYSTALS, NONLINEAR OPTICS, DIFFRACTION, LEAD TITANATES, ZIRCONATES, PHOSPHATES, POTASSIUM COMPOUNDS, INORGANIC MATERIALS, PIEZOELECTRIC GAGES, SOL GEL PROCESSES.

Subject Categories : Ceramics, Refractories and Glass
      Laminates and Composite Materials
      Cybernetics

Distribution Statement : APPROVED FOR PUBLIC RELEASE