The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 10, 2015
Filed:
Jun. 26, 2013
National Institute for Materials Science, Ibaraki, JP;
Han Zhang, Ibaraki, CN;
Jie Tang, Ibaraki, CN;
Luchang Qin, Ibaraki, CN;
Jinshi Yuan, Ibaraki, CN;
Norio Shinya, Ibaraki, JP;
Yasushi Yamauchi, Ibaraki, JP;
National Institute for Materials Science, Ibaraki, JP;
Abstract
A metal hexaboride nanowire such as LaBwith the formed metal-terminated (100) plane at the tip has a small work function, and can emit a very narrow electron beam from the (100) plane. In such emitters, contamination occurs in a very short time period, and the output current greatly decreases when used under low temperature. The cold field emitter of the present invention overcomes this problem with a stabilization process that exposes the metal-terminated (100) plane of the tip to hydrogen at low temperature, and can stably operate over extended time periods.