Bulletin of the American Physical Society
75th Annual Gaseous Electronics Conference
Volume 67, Number 9
Monday–Friday, October 3–7, 2022;
Sendai International Center, Sendai, Japan
The session times in this program are intended for Japan Standard Time zone in Tokyo, Japan (GMT+9)
Session FM2: Workshop III: Functional Surfaces in Plasma Elementary and Process-Applicable Reactions
10:30 AM–5:00 PM,
Monday, October 3, 2022
Sendai International Center
Room: Shirakashi 1
Chair: Osamu Sakai, The University of Shiga Prefecture
Abstract: FM2.00004 : Fibrous nanostructures formation using helium plasma and their applications as functional materials*
1:30 PM–2:15 PM
Presenter:
Kenzo Ibano
(Osaka University)
Authors:
Kenzo Ibano
(Osaka University)
Heun T Lee
(Osaka University)
Yoshio Ueda
(Osaka University)
The fibrous nanostructures have been observed on a variety of metals, and there are differences in the formation conditions and shapes of the nanostructures depending on the metals. Based on these experimental findings, models of the formation mechanism will be discussed in the beginning of the presentation.
Recent studies show improved sensitivities of this fibrous nanostructures in trace gas sensing tests. Sensors having the fibrous nanostructured surface were prepared and tested for ethanol, hydrogen, and ethylene gases. Sensitivity improvements of up to 300% have been confirmed by a comparison between a flat surface and the fibrous surface. Further improvements can be achieved if we optimize the plasma irradiation conditions.
As well as the gas sensor, the fibrous nanostructure can also be applied to electrodes. Performance of the fibrous nanostructure surface as photo-catalysis, thermal-catalysis and lithium-ion battery electrode will also be presented.
In summary, remaining open questions for the formation mechanism of the nanostructure and the prospects of this material’s applications will be discussed.
*This research received financial support from the JSPS Core to Core Program JPJSCCA2019002 for establishing an International Center for Data Driven in Plasma Science at Osaka University and also from the JSPS KAKENHI Grant Number 21K03523.
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