期刊
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
卷 22, 期 8, 页码 4313-4325出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c9cp05815j
关键词
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资金
- U.S. National Science Foundation [CHE-1563528, CHE-1902403]
- University of Notre Dame Faculty Research Program
This perspective highlights recent advances in super-resolution, mid-infrared imaging and spectroscopy. It provides an overview of the different near field microscopy techniques developed to address the problem of chemically imaging specimens in the mid-infrared fingerprint region of the spectrum with high spatial resolution. We focus on a recently developed far-field optical technique, called infrared photothermal heterodyne imaging (IR-PHI), and discusses the technique in detail. Its practical implementation in terms of equipment used, optical geometries employed, and underlying contrast mechanism are described. Milestones where IR-PHI has led to notable advances in bioscience and materials science are summarized. The perspective concludes with a future outlook for robust and readily accessible high spatial resolution, mid-infrared imaging and spectroscopy techniques.
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