由多边形狭缝产生的近无衍射电子晶格束。
Nearly nondiffracting electron lattice beams generated by polygonal slits.
作者信息
Nambu Hiroki, Noguchi Yuuki, Saitoh Koh, Uchida Masaya
机构信息
Department of Crystalline Materials Science, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan.
Institute of Materials and Systems for Sustainability, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan.
出版信息
Microscopy (Oxf). 2017 Aug 1;66(4):295-299. doi: 10.1093/jmicro/dfx020.
A method for generating electron lattice beams carrying vortices using nanofabricated polygonal slits in a transmission electron microscope is proposed. Experimental and simulation study of the intensity of the beams verified their Bessel beam-like nearly nondiffracting behavior. Phase analysis using a diffractive imaging method found arrays of quantized vortices, forming an electron beam lattice with cylindrical intensity distribution in the propagation direction. Such vortex lattice beams may be used in a variety of applications including nanofabrication, particle manipulation or a new electron imaging method.
提出了一种利用透射电子显微镜中的纳米制造多边形狭缝产生携带涡旋的电子晶格束的方法。对束强度的实验和模拟研究证实了它们类似贝塞尔束的几乎无衍射行为。使用衍射成像方法进行的相位分析发现了量化涡旋阵列，在传播方向上形成了具有圆柱强度分布的电子束晶格。这种涡旋晶格束可用于包括纳米制造、粒子操纵或新的电子成像方法在内的各种应用。
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