Division of Nanophotonics, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing, 100190, China.
University of Chinese, Academy of Sciences, Beijing, 100049, P. R. China.
Adv Mater. 2019 Nov;31(45):e1805845. doi: 10.1002/adma.201805845. Epub 2019 Feb 6.
The search for electron sources with simultaneous optimal spatial and temporal resolution has become an area of intense activity for a wide variety of applications in the emerging fields of lightwave electronics and attosecond science. Most recently, increasing efforts are focused on the investigation of ultrafast field-emission phenomena of nanomaterials, which not only are fascinating from a fundamental scientific point of view, but also are of interest for a range of potential applications. Here, the current state-of-the-art in ultrafast field-emission, particularly sub-optical-cycle field emission, based on various nanostructures (e.g., metallic nanotips, carbon nanotubes) is reviewed. A number of promising nanomaterials and possible future research directions are also established.
寻找具有同时最佳空间和时间分辨率的电子源，已经成为新兴的光波电子学和阿秒科学领域中各种应用的活跃研究领域。最近，人们越来越关注纳米材料的超快场发射现象的研究，这不仅从基础科学的角度来看很吸引人，而且对于一系列潜在的应用也很有意义。本文综述了基于各种纳米结构（例如金属纳米尖、碳纳米管）的超快场发射，特别是亚光周期场发射的最新研究进展。还确定了一些有前途的纳米材料和可能的未来研究方向。
