期刊
MRS BULLETIN
卷 44, 期 5, 页码 392-402出版社
CAMBRIDGE UNIV PRESS
DOI: 10.1557/mrs.2019.104
关键词
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资金
- European Research Council [714697]
- MIT-SUTD International Design Center
- US Nuclear Regulatory Commission (NRC) [NRC-HQ-84-15-G-0045]
- US Department of Energy NNSA [DE-NA-0003864]
- European Research Council (ERC) [714697] Funding Source: European Research Council (ERC)
Structure-property relationships are the foundation of materials science and are essential for predicting material response to driving forces, managing in-service material degradation, and engineering materials for optimal performance. Elastic, thermal, and acoustic properties provide a convenient gateway to directly or indirectly probe materials structure across multiple length scales. This article will review how using the laser-induced transient grating spectroscopy (TGS) technique, which uses a transient diffraction grating to generate surface acoustic waves and temperature gratings on a material surface, nondestructively reveals the material's elasticity, thermal diffusivity, and energy dissipation on the sub-microsecond time scale, within a tunable subsurface depth. This technique has already been applied to many challenging problems in materials characterization, from analysis of radiation damage, to colloidal crystals, to phonon-mediated thermal transport in nanostructured systems, to crystal orientation and lattice parameter determination. Examples of these applications, as well as inferring aspects of microstructural evolution, illustrate the wide potential reach of TGS to solve old materials challenges and to uncover new science. We conclude by looking ahead at the tremendous potential of TGS for materials discovery and optimization when applied in situ to dynamically evolving systems.
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