Bulletin of the American Physical Society
APS March Meeting 2019
Volume 64, Number 2
Monday–Friday, March 4–8, 2019; Boston, Massachusetts
Session B25: Biopolymers and Sustainable Polymers
11:15 AM–2:15 PM,
Monday, March 4, 2019
BCEC
Room: 160A
Sponsoring
Unit:
DPOLY
Chair: Alexander Klotz, Massachusetts Institute of Technology
Abstract: B25.00014 : 1/f Noise in Solid-state Nanopore: Generation Mechanism and Prevention Methods
1:51 PM–2:03 PM
Presenter:
Kazuma Matsui
(Hitachi)
Authors:
Kazuma Matsui
(Hitachi)
Yusuke Goto
(Hitachi)
Rena Akahori
(Hitachi)
Michiru Fujioka
(Hitachi High-Technologies)
Takeshi Ishida
(Hitachi)
Takahide Yokoi
(Hitachi)
Itaru Yanagi
(Hitachi)
Ken-ichi Takeda
(Hitachi)
In this research, we found that 1/f noise is generated from the surface charge fluctuations due to an exchange reaction of alkali metal ions (M+) and protons (H+) on a nanopore wall. We hypothesized the charge fluctuations are dependent on the equilibrium constants of the reaction, and measured baseline current with various cations. Surprisingly, the order of 1/f noise intensity follows the theoretical one estimated from their equilibrium constants.
We also developed a new 1/f noise reduction method by suppressing the exchange reaction. The nanopore wall was coated with divalent cations, which lead to prevent the adsorption of other ions because those adsorption affinity is higher than other ions. As a result, we successfully and effectively reduced 1/f noise with this method.
Follow Us |
Engage
Become an APS Member |
My APS
Renew Membership |
Information for |
About APSThe American Physical Society (APS) is a non-profit membership organization working to advance the knowledge of physics. |
© 2024 American Physical Society
| All rights reserved | Terms of Use
| Contact Us
Headquarters
1 Physics Ellipse, College Park, MD 20740-3844
(301) 209-3200
Editorial Office
100 Motor Pkwy, Suite 110, Hauppauge, NY 11788
(631) 591-4000
Office of Public Affairs
529 14th St NW, Suite 1050, Washington, D.C. 20045-2001
(202) 662-8700