Title:
METASURFACE ELEMENT, ELECTRON TUBE, AND METHOD FOR PRODUCING ELECTRON TUBE
Document Type and Number:
WIPO Patent Application WO/2022/102268
Kind Code:
A1
Abstract:
A metasurface element includes a support body and a metasurface formed on a surface of the support body. The metasurface includes a metal pattern that is disposed to emit an electron in response to incidence of an electromagnetic wave, and a metal layer that contains an alkali metal and is formed on the metal pattern. The metal layer extends beyond the metal pattern to reach a region on the surface of the support body, the region being not formed with the metal pattern.
Inventors:
KAWAI NAOYA (JP)
YOSHIARA HIDEAKI (JP)
SUZUKI YUYA (JP)
NAKAGOMI GENKI (JP)
YOSHIARA HIDEAKI (JP)
SUZUKI YUYA (JP)
NAKAGOMI GENKI (JP)
Application Number:
PCT/JP2021/035720
Publication Date:
May 19, 2022
Filing Date:
September 28, 2021
Export Citation:
Assignee:
HAMAMATSU PHOTONICS KK (JP)
International Classes:
H01J1/34; H01J9/12; H01J43/08; G01J5/08; G01N21/3581
Domestic Patent References:
| WO2012078043A1 | 2012-06-14 | |||
| WO2015028029A1 | 2015-03-05 |
Foreign References:
| EP0558308A1 | 1993-09-01 | |||
| US5118952A | 1992-06-02 | |||
| US6054718A | 2000-04-25 | |||
| US20160216201A1 | 2016-07-28 |
Other References:
ANONYMOUS: "Metamaterial - Wikipedia", 11 November 2019 (2019-11-11), pages 1 - 21, XP055644408, Retrieved from the Internet [retrieved on 20191120]
ANONYMOUS: "Electromagnetic metasurface - Wikipedia", 8 July 2020 (2020-07-08), XP055716025, Retrieved from the Internet [retrieved on 20200717]
ANONYMOUS: "Terahertz metamaterial - Wikipedia", 29 September 2019 (2019-09-29), XP055644415, Retrieved from the Internet [retrieved on 20191120]
ANONYMOUS: "Electromagnetic metasurface - Wikipedia", 8 July 2020 (2020-07-08), XP055716025, Retrieved from the Internet
ANONYMOUS: "Terahertz metamaterial - Wikipedia", 29 September 2019 (2019-09-29), XP055644415, Retrieved from the Internet
Attorney, Agent or Firm:
HASEGAWA Yoshiki et al. (JP)
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