Bulletin of the American Physical Society
APS March Meeting 2022
Volume 67, Number 3
Monday–Friday, March 14–18, 2022; Chicago
Session W56: Twisted Heterostructures and Straintronics
3:00 PM–5:48 PM,
Thursday, March 17, 2022
Room: Hyatt Regency Hotel -Burnham
Sponsoring
Unit:
DCMP
Chair: Dmitri Tenne, Boise State University
Abstract: W56.00005 : Controlling twist angle and strain in van der Waals heterostructures
3:48 PM–4:00 PM
Presenter:
Maëlle Kapfer
(Columbia University)
Authors:
Maëlle Kapfer
(Columbia University)
Bjarke S Jessen
(Columbia University)
Nathan R Finney
(Columbia University)
Dorri Halbertal
(Columbia University)
Thomas P Darlington
(Columbia University)
Dorte R Danielsen
(Columbia University)
Megan Eisele
(Columbia University)
Kenji Watanabe
(NIMS)
Takashi Taniguchi
(NIMS)
P. James Schuck
(Columbia University)
Dmitri N Basov
(Columbia University)
James C Hone
(Columbia University)
Cory R Dean
(Columbia University)
Here, we demonstrate a novel fabrication method that addresses these questions by using the tip of an atomic force microscope to mechanically bend graphene ribbons on various substrates, thus continuously and homogeneously varying both twist angle and strain. We confirm through piezo force microscopy and Raman spectroscopy that our technique allows for a continuous and independent variation of both twist angle and strain within a single device. Finally, we show this technique can be applied to any vdW materials, limited only by material stiffness.
[1] S. Dai et al. Nano Lett.16, 5923-5927 (2016)
[2] Z. Bi et al. Phys. Rev. B 100, 035448 (2019)
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. |
© 2025 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