期刊
FRONTIERS OF PHYSICS
卷 11, 期 2, 页码 -出版社
HIGHER EDUCATION PRESS
DOI: 10.1007/s11467-015-0526-5
关键词
near-field optical microscopy; nano-optics; TERS; plasmonics; optical antenna; 2D materials
资金
- Office of Science, Office of Basic Energy Sciences, Division of Materials Sciences and Engineering, of U.S. Department of Energy [DE-AC02-05CH11231]
By enabling the probing of light-matter interactions at the functionally relevant length scales of most materials, near-field optical imaging and spectroscopy accesses information that is unobtainable with other methods. The advent of apertureless techniques, which exploit the ultralocalized and enhanced near-fields created by sharp metallic tips or plasmonic nanoparticles, has resulted in rapid adoption of near-field approaches for studying novel materials and phenomena, with spatial resolution approaching sub-molecular levels. However, these approaches are generally limited by the dominant out-of-plane polarization response of apertureless tips, restricting the exploration and discovery of many material properties. This has led to recent design and fabrication breakthroughs in near-field tips engineered specifically for enhancing in-plane interactions with near-field light components. This mini-review provides a perspective on recent progress and emerging directions aimed at utilizing and controlling in-plane optical polarization, highlighting key application spaces where in-plane near-field tip responses have enabled recent advancements in the understanding and development of new nanostructured materials and devices.
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