Pulse driving of CNT cathode-based electron emitter for multi-x-ray source

Junyoung Park; Amar Prasad Gupta; Kyung Sik Yoon; Changwon Jeong; Kwon Ha Yoon; Seungryong Cho; Jeung Sun Ahn; Mallory Mativenga; Jehwang Ryu

doi:10.1117/12.2655849

Pulse driving of CNT cathode-based electron emitter for multi-x-ray source

Junyoung Park, Amar Prasad Gupta, Kyung Sik Yoon, Changwon Jeong, Kwon Ha Yoon, Seungryong Cho, Jeung Sun Ahn, Mallory Mativenga, Jehwang Ryu

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

Abstract

We present an electron emitter for multi-X-ray source system such as computed tomography (CT) or tomosynthesis. The electron emitter used in the X-ray source was fabricated using carbon nanotubes with excellent electrical properties as a cold cathode. A metal-oxide-semiconductor field-effect transistor (MOSFET) circuit was added between the cathode of the electron emitter and the ground to enable pulse driving according to the input signal. The field emission characteristics of the electron emitter were tested in a self-made vacuum system. Pulse driving of the electron emitter was performed at a frequency of 10 kHz and a duty of 50%, and a maximum cathode current of 3.9 mA flowed at a gate voltage of 2.1 kV. In addition, it was possible to take X-ray images of the chest phantom and metronome using an X-ray source made with a CNT-based electron emitter.

Original language	English
Title of host publication	Medical Imaging 2023
Subtitle of host publication	Physics of Medical Imaging
Editors	Lifeng Yu, Rebecca Fahrig, John M. Sabol
Publisher	SPIE
ISBN (Electronic)	9781510660311
DOIs	https://doi.org/10.1117/12.2655849
Publication status	Published - 2023
Event	Medical Imaging 2023: Physics of Medical Imaging - San Diego, United States Duration: 19 Feb 2023 → 23 Feb 2023

Publication series

Name	Progress in Biomedical Optics and Imaging - Proceedings of SPIE
Volume	12463
ISSN (Print)	1605-7422

Conference

Conference	Medical Imaging 2023: Physics of Medical Imaging
Country/Territory	United States
City	San Diego
Period	19/02/23 → 23/02/23

Bibliographical note

Publisher Copyright:
© COPYRIGHT SPIE. Downloading of the abstract is permitted for personal use only.

Keywords

Carbon nanotube
Electron emitter
Multi X-ray source
Pulse drive

Access to Document

10.1117/12.2655849

Cite this

Park, J., Gupta, A. P., Yoon, K. S., Jeong, C., Yoon, K. H., Cho, S., Ahn, J. S., Mativenga, M., & Ryu, J. (2023). Pulse driving of CNT cathode-based electron emitter for multi-x-ray source. In L. Yu, R. Fahrig, & J. M. Sabol (Eds.), Medical Imaging 2023: Physics of Medical Imaging Article 124634N (Progress in Biomedical Optics and Imaging - Proceedings of SPIE; Vol. 12463). SPIE. https://doi.org/10.1117/12.2655849

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title = "Pulse driving of CNT cathode-based electron emitter for multi-x-ray source",

abstract = "We present an electron emitter for multi-X-ray source system such as computed tomography (CT) or tomosynthesis. The electron emitter used in the X-ray source was fabricated using carbon nanotubes with excellent electrical properties as a cold cathode. A metal-oxide-semiconductor field-effect transistor (MOSFET) circuit was added between the cathode of the electron emitter and the ground to enable pulse driving according to the input signal. The field emission characteristics of the electron emitter were tested in a self-made vacuum system. Pulse driving of the electron emitter was performed at a frequency of 10 kHz and a duty of 50%, and a maximum cathode current of 3.9 mA flowed at a gate voltage of 2.1 kV. In addition, it was possible to take X-ray images of the chest phantom and metronome using an X-ray source made with a CNT-based electron emitter.",

keywords = "Carbon nanotube, Electron emitter, Multi X-ray source, Pulse drive",

author = "Junyoung Park and Gupta, {Amar Prasad} and Yoon, {Kyung Sik} and Changwon Jeong and Yoon, {Kwon Ha} and Seungryong Cho and Ahn, {Jeung Sun} and Mallory Mativenga and Jehwang Ryu",

note = "Publisher Copyright: {\textcopyright} COPYRIGHT SPIE. Downloading of the abstract is permitted for personal use only.; Medical Imaging 2023: Physics of Medical Imaging ; Conference date: 19-02-2023 Through 23-02-2023",

year = "2023",

doi = "10.1117/12.2655849",

language = "English",

series = "Progress in Biomedical Optics and Imaging - Proceedings of SPIE",

publisher = "SPIE",

editor = "Lifeng Yu and Rebecca Fahrig and Sabol, {John M.}",

booktitle = "Medical Imaging 2023",

address = "United States",

}

Park, J, Gupta, AP, Yoon, KS, Jeong, C, Yoon, KH, Cho, S, Ahn, JS, Mativenga, M & Ryu, J 2023, Pulse driving of CNT cathode-based electron emitter for multi-x-ray source. in L Yu, R Fahrig & JM Sabol (eds), Medical Imaging 2023: Physics of Medical Imaging., 124634N, Progress in Biomedical Optics and Imaging - Proceedings of SPIE, vol. 12463, SPIE, Medical Imaging 2023: Physics of Medical Imaging, San Diego, United States, 19/02/23. https://doi.org/10.1117/12.2655849

Pulse driving of CNT cathode-based electron emitter for multi-x-ray source. / Park, Junyoung; Gupta, Amar Prasad; Yoon, Kyung Sik et al.
Medical Imaging 2023: Physics of Medical Imaging. ed. / Lifeng Yu; Rebecca Fahrig; John M. Sabol. SPIE, 2023. 124634N (Progress in Biomedical Optics and Imaging - Proceedings of SPIE; Vol. 12463).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

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T1 - Pulse driving of CNT cathode-based electron emitter for multi-x-ray source

AU - Park, Junyoung

AU - Gupta, Amar Prasad

AU - Yoon, Kyung Sik

AU - Jeong, Changwon

AU - Yoon, Kwon Ha

AU - Cho, Seungryong

AU - Ahn, Jeung Sun

AU - Mativenga, Mallory

AU - Ryu, Jehwang

PY - 2023

Y1 - 2023

N2 - We present an electron emitter for multi-X-ray source system such as computed tomography (CT) or tomosynthesis. The electron emitter used in the X-ray source was fabricated using carbon nanotubes with excellent electrical properties as a cold cathode. A metal-oxide-semiconductor field-effect transistor (MOSFET) circuit was added between the cathode of the electron emitter and the ground to enable pulse driving according to the input signal. The field emission characteristics of the electron emitter were tested in a self-made vacuum system. Pulse driving of the electron emitter was performed at a frequency of 10 kHz and a duty of 50%, and a maximum cathode current of 3.9 mA flowed at a gate voltage of 2.1 kV. In addition, it was possible to take X-ray images of the chest phantom and metronome using an X-ray source made with a CNT-based electron emitter.

AB - We present an electron emitter for multi-X-ray source system such as computed tomography (CT) or tomosynthesis. The electron emitter used in the X-ray source was fabricated using carbon nanotubes with excellent electrical properties as a cold cathode. A metal-oxide-semiconductor field-effect transistor (MOSFET) circuit was added between the cathode of the electron emitter and the ground to enable pulse driving according to the input signal. The field emission characteristics of the electron emitter were tested in a self-made vacuum system. Pulse driving of the electron emitter was performed at a frequency of 10 kHz and a duty of 50%, and a maximum cathode current of 3.9 mA flowed at a gate voltage of 2.1 kV. In addition, it was possible to take X-ray images of the chest phantom and metronome using an X-ray source made with a CNT-based electron emitter.

KW - Carbon nanotube

KW - Electron emitter

KW - Multi X-ray source

KW - Pulse drive

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T3 - Progress in Biomedical Optics and Imaging - Proceedings of SPIE

BT - Medical Imaging 2023

A2 - Yu, Lifeng

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PB - SPIE

T2 - Medical Imaging 2023: Physics of Medical Imaging

Y2 - 19 February 2023 through 23 February 2023

ER -

Pulse driving of CNT cathode-based electron emitter for multi-x-ray source

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