Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Generation of electron vortex beams with over 1000 orbital angular
  momentum quanta using a tuneable electrostatic spiral phase plate   We report the use of an electrostatic MEMS-based device to produce high
quality electron vortex beams with more than 1000 quanta of orbital angular
momentum (OAM). Diffraction and off-axis electron holography experiments are
used to show that the diameter of the vortex in the diffraction plane increases
linearly with OAM, thereby allowing the angular momentum content of the vortex
to be calibrated. The realization of electron vortex beams with even larger
values of OAM is currently limited by the breakdown voltage of the device.
Potential solutions to overcome this problem are discussed.

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The categories of this paper are: hep-lat
16
The categories of this paper are: stat
37
The categories of this paper are: supr-con
21
The categories of this paper are: adap-org
31
The categories of this paper are: ao-sci
14
The categories of this paper are: math-ph
5
The categories of this paper are: gr-qc
34
The categories of this paper are: chem-ph
35
The categories of this paper are: mtrl-th
10
The categories of this paper are: q-bio
29
The categories of this paper are: funct-an
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The categories of this paper are: chao-dyn
30
The categories of this paper are: q-alg
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The categories of this paper are: hep-th
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The categories of this paper are: q-fin
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The categories of this paper are: eess