@conference {chen2008terahertz, title = {Terahertz characterization of interfacial oxide layers and voids for health monitoring of ceramic coatings}, booktitle = {2009 34th International Conference on Infrared, Millimeter, and Terahertz Waves}, year = {2008}, author = {Chen, Chia-Chu and Lee, Dong-Joon and Pollock, Tresa and Whitaker, John F} }