Infrared Transparent Zero Thermal Expansion Ceramic

Period of Performance: 07/14/2008 - 02/14/2009


Phase 1 STTR

Recipient Firm

Sienna Technologies, Inc.
19501 144th Avenue NE Array
Woodinville, WA 98072
Principal Investigator
Firm POC

Research Institution

University of Washington
Department of Aeronautics&Astronautics, Box 352250
Seattle, WA 98195
Institution POC


This program will develop a single-phase cubic material with near zero thermal expansion and high (>80%-85% in-line) infrared transmission from 3 µm to 5 µm for infrared domes and windows. The low thermal expansion material will have high thermal shock resistance as well as good mechanical strength to survive harsh environments. In this Phase I project we will produce a fully dense sample of the cubic material by hot pressing, and measure coefficient of thermal expansion and IR transmission on 1 mm thick planar samples.