Mapping thermophysical properties with high spatial resolution
Xuan Zheng and David G. Cahill
GE Global Research

We are developing and applying methods for mapping the thermophysical properties (thermal conductivity, heat capacity, and thermal expansion) of materials with 3 micron spatial resolution. These techniques are based on pump-probe measurements of optical reflectivity with picosecond time-resolution. We use diffusion multiple samples prepared at GE Global Research to efficiently explore the properties of binary and ternary alloys over the entire range of compositions. Data for thermal conductivity are being used to identify the substitutional sites of a third element in an intermetallic compound and probe the range of compositions that produce ordered phases.

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On 01 Apr 2008, 08:10.