公开(公告)号：US20250014853A1

公开(公告)日：2025-01-09

申请号：US18711014

申请日：2022-09-01

Applicant: MEIDENSHA CORPORATION ,  WASEDA UNIVERSITY

Inventor： Hayato OCHI ,  Rena TAKAHASHI ,  Suguru NODA ,  Kotaro YASUI ,  Hisashi SUGIME

IPC: H01J35/04 ,  H01J35/06

Abstract: An electric field emission device includes a vacuum vessel configured to include a vacuum chamber; an emitter positioned on one side in an axial direction of the chamber and including an electron generation portion facing another side in the axial direction; a target positioned on the other side of the chamber and facing the emitter; a guard electrode that is a cylindrical body, is fixed to the vacuum vessel, and has an opening portion; a support to move the emitter in the axial direction on an inner side of the guard electrode; and an electric field shield body formed of a conductor connected to the guard electrode. The electric field shield body partially overlaps the opening portion on a projection plane in the axial direction, and is formed in a shape partitioning the opening portion into a plurality of areas.

公开(公告)号：US20210375572A1

公开(公告)日：2021-12-02

申请号：US17288084

申请日：2019-10-21

Applicant: WASEDA UNIVERSITY ,  MEIDENSHA CORPORATION

Inventor： Suguru NODA ,  Sae KITAGAWA ,  Kotaro YASUI ,  Hisashi SUGIME ,  Daizo TAKAHASHI ,  Yuichi NISHIKIORI ,  Hayato OCHI ,  Rena TAKAHASHI ,  Toshimasa FUKAI

IPC: H01J9/02 ,  H01J1/304 ,  H01J35/06

Abstract: It is a CNT device (1) (carbon-metal structure) equipped with a carbon nanotube layer (2) (CNT layer 2; same hereafter) on a metal pedestal (4). The metal pedestal (4) is brazed to the CNT layer (2) with a brazing material layer (3) interposed therebetween. When manufacturing the CNT device (1), firstly, the CNT layer (2) is formed on a heat-resistant textured substrate (6). Next, the metal pedestal (4) is brazed to the CNT layer (2) that is on the heat-resistant textured substrate (6) with the brazing material layer (3) interposed therebetween. Then, the metal pedestal (4) (and the CNT layer 2) is peeled off the heat-resistant textured substrate (6) to transfer the CNT layer (2) from the heat-resistant textured substrate (6) to the metal pedestal (4).