Programmable Self-Regulation with Wrinkled Hydrogels and Plasmonic Nanoparticle Lattices

Young Ah Lucy Lee; Zeynab Mousavikhamene; Abhishek Kottaram Amrithanath; Suzanne M. Neidhart; Sridhar Krishnaswamy; George C. Schatz; Teri W. Odom

doi:10.1002/smll.202103865

Programmable Self-Regulation with Wrinkled Hydrogels and Plasmonic Nanoparticle Lattices

Young Ah Lucy Lee, Zeynab Mousavikhamene, Abhishek Kottaram Amrithanath, Suzanne M. Neidhart, Sridhar Krishnaswamy, George C. Schatz, Teri W. Odom^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

11 Scopus citations

Abstract

This paper describes a self-regulating system that combines wrinkle-patterned hydrogels with plasmonic nanoparticle (NP) lattices. In the feedback loop, the wrinkle patterns flatten in response to moisture, which then allows light to reach the NP lattice on the bottom layer. Upon light absorption, the NP lattice produces a photothermal effect that dries the hydrogel, and the system then returns to the initial wrinkled configuration. The timescale of this regulatory cycle can be programmed by tuning the degree of photothermal heating by NP size and substrate material. Time-dependent finite element analysis reveals the thermal and mechanical mechanisms of wrinkle formation. This self-regulating system couples morphological, optical, and thermo-mechanical properties of different materials components and offers promising design principles for future smart systems.

Original language	English (US)
Article number	2103865
Journal	Small
Volume	18
Issue number	1
DOIs	https://doi.org/10.1002/smll.202103865
State	Published - Jan 6 2022

Funding

This work was supported by the National Science Foundation (NSF RAISE NSF CMMI‐1848613) and the National Science Foundation Graduate Research Fellowship under Grant No. (NSF DGE 1842765). This work made use of the Northwestern University Micro/Nano Fabrication Facility (NUFAB) and the Northwestern University Atomic and Nanoscale Characterization Experimental Center (NUANCE), which have received support from the Soft and Hybrid Nanotechnology Experimental (SHyNE) Resource (NSF ECCS‐202563); the Materials Research Science and Engineering Center (MRSEC) program (NSF DMR‐172013) at the Materials Research Center; the International Institute for Nanotechnology (IIN); the Keck Foundation; and the State of Illinois. The computational work was supported in part by the Quest high performance computing facility at Northwestern University, which is jointly supported by the Office of the Provost, the Office for Research, and Northwestern University Information Technology. Y.‐A.L.L. gratefully acknowledges support from the Ryan Fellowship and the IIN at Northwestern University.

ASJC Scopus subject areas

Biotechnology
General Chemistry
Biomaterials
General Materials Science
Engineering (miscellaneous)

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10.1002/smll.202103865

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abstract = "This paper describes a self-regulating system that combines wrinkle-patterned hydrogels with plasmonic nanoparticle (NP) lattices. In the feedback loop, the wrinkle patterns flatten in response to moisture, which then allows light to reach the NP lattice on the bottom layer. Upon light absorption, the NP lattice produces a photothermal effect that dries the hydrogel, and the system then returns to the initial wrinkled configuration. The timescale of this regulatory cycle can be programmed by tuning the degree of photothermal heating by NP size and substrate material. Time-dependent finite element analysis reveals the thermal and mechanical mechanisms of wrinkle formation. This self-regulating system couples morphological, optical, and thermo-mechanical properties of different materials components and offers promising design principles for future smart systems.",

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AU - Neidhart, Suzanne M.

AU - Krishnaswamy, Sridhar

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Programmable Self-Regulation with Wrinkled Hydrogels and Plasmonic Nanoparticle Lattices

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