Bulletin of the American Physical Society
APS March Meeting 2018
Monday–Friday, March 5–9, 2018; Los Angeles, California
Session Y57: Physics of Bioinspired Soft Materials II
11:15 AM–1:39 PM,
Friday, March 9, 2018
LACC Room: 518
Sponsoring Units: GSOFT DBIO
Chair: Ling Li
Abstract: Y57.00005 : Theory of non-equilibrium signal processing in hydrogels*
12:03 PM–12:15 PM
C. Nadir Kaplan
C. Nadir Kaplan
Living organisms store and differentiate information by processing complex dynamic environmental signals. Current hydrogel-based systems are constrained to an in-phase coupling between environmental changes and swelling or contraction. In order to integrate non-equilibrium complex signal processing capabilities into hydrogels, we model the interplay between transport of multiple chemical signals, their complexation with the hydrogel network, and the resulting dynamic poroelastic responses. The theory guides the design of a bio-inspired experimental hydrogel system that can detect and report features of the environment it would otherwise be unable to differentiate. In particular, it (i) distinguishes between signals and their propagation direction, converts (ii) transient stimuli to continuous responses or (iii) continuous stimuli to transient responses, and (iv) filters signals or amplifies them. Our combined theoretical and experimental approach provides new functionalities for engineering applications where complex signal processing is critical, ranging from sensors to soft robotics.
*This research was supported by the Kavli Institute for Bionano Science and Technology at Harvard University.
The American Physical Society (APS) is a non-profit membership organization working to advance the knowledge of physics.
1 Physics Ellipse, College Park, MD 20740-3844
Editorial Office 1 Research Road, Ridge, NY 11961-2701 (631) 591-4000
Office of Public Affairs 529 14th St NW, Suite 1050, Washington, D.C. 20045-2001 (202) 662-8700