Two–Photon Printing of Shape–Memory Microstructures and Metasurfaces via Radical–Mediated Thiol–Vinyl Hydrothiolation
Abstract
Abstract Shape‐memory resists capable of high‐resolution curing into arbitrarily designed structures are increasingly demanded for soft robotics, optical sensors, microscale manufacturing, and biomedicine. Amorphous, shape‐memory thiol‐vinyl networks are printed using two‐photon polymerization (2PP) curing of a simple resin formulated with commercially available reagents. The ability to print high‐resolution feature sizes down to 200 nm is attributed to the use of radical‐mediated, thiol‐vinyl step‐growth polymerization that quickly cross‐links the resin, limiting diffusive transport. The thermomechanical behavior of the 2PP‐cured material analyzed in compression, tension, and three‐point bending is similar to the behavior of the UV‐polymerized samples. To demonstrate the ability to design, field, and test 4D responsive microstructures, an array of nine springs with coil diameters of 330 µm is printed. Following compressive shape‐fixing, printed arrays can release 11 µJ of stored elastic strain energy when reheated. Further, a new concept of dichroic‐memory of a metamaterial device is demonstrated by printing a twisted woodpile structure with circular dichroism as characterized by Mueller Matrix ellipsometry. The results of this study demonstrate how combining high‐resolution 2PP curing with stimuli‐responsive molecular architectures can further the engineering of responsive microstructures and metamaterials.
- Authors:
-
- Univ. of Rochester, NY (United States)
- Publication Date:
- Research Org.:
- Univ. of Rochester, NY (United States)
- Sponsoring Org.:
- USDOE National Nuclear Security Administration (NNSA); National Science Foundation (NSF)
- OSTI Identifier:
- 1875682
- Alternate Identifier(s):
- OSTI ID: 1860424
- Report Number(s):
- 2022-85; 1727; 2688
Journal ID: ISSN 2365-709X; ECCS‐1530540; TRN: US2307241
- Grant/Contract Number:
- NA0003856; CBET-1827904
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Advanced Materials Technologies
- Additional Journal Information:
- Journal Volume: 7; Journal Issue: 9; Journal ID: ISSN 2365-709X
- Publisher:
- Wiley
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE; two-photon polymerization; shape-memory; metamaterials; stimuli-responsive polymers; glassy networks; actuators
Citation Formats
Jeske, Madelyn P., Zhang, Wenshi, and Anthamatten, Mitchell. Two–Photon Printing of Shape–Memory Microstructures and Metasurfaces via Radical–Mediated Thiol–Vinyl Hydrothiolation. United States: N. p., 2022.
Web. doi:10.1002/admt.202101725.
Jeske, Madelyn P., Zhang, Wenshi, & Anthamatten, Mitchell. Two–Photon Printing of Shape–Memory Microstructures and Metasurfaces via Radical–Mediated Thiol–Vinyl Hydrothiolation. United States. https://doi.org/10.1002/admt.202101725
Jeske, Madelyn P., Zhang, Wenshi, and Anthamatten, Mitchell. Wed .
"Two–Photon Printing of Shape–Memory Microstructures and Metasurfaces via Radical–Mediated Thiol–Vinyl Hydrothiolation". United States. https://doi.org/10.1002/admt.202101725. https://www.osti.gov/servlets/purl/1875682.
@article{osti_1875682,
title = {Two–Photon Printing of Shape–Memory Microstructures and Metasurfaces via Radical–Mediated Thiol–Vinyl Hydrothiolation},
author = {Jeske, Madelyn P. and Zhang, Wenshi and Anthamatten, Mitchell},
abstractNote = {Abstract Shape‐memory resists capable of high‐resolution curing into arbitrarily designed structures are increasingly demanded for soft robotics, optical sensors, microscale manufacturing, and biomedicine. Amorphous, shape‐memory thiol‐vinyl networks are printed using two‐photon polymerization (2PP) curing of a simple resin formulated with commercially available reagents. The ability to print high‐resolution feature sizes down to 200 nm is attributed to the use of radical‐mediated, thiol‐vinyl step‐growth polymerization that quickly cross‐links the resin, limiting diffusive transport. The thermomechanical behavior of the 2PP‐cured material analyzed in compression, tension, and three‐point bending is similar to the behavior of the UV‐polymerized samples. To demonstrate the ability to design, field, and test 4D responsive microstructures, an array of nine springs with coil diameters of 330 µm is printed. Following compressive shape‐fixing, printed arrays can release 11 µJ of stored elastic strain energy when reheated. Further, a new concept of dichroic‐memory of a metamaterial device is demonstrated by printing a twisted woodpile structure with circular dichroism as characterized by Mueller Matrix ellipsometry. The results of this study demonstrate how combining high‐resolution 2PP curing with stimuli‐responsive molecular architectures can further the engineering of responsive microstructures and metamaterials.},
doi = {10.1002/admt.202101725},
journal = {Advanced Materials Technologies},
number = 9,
volume = 7,
place = {United States},
year = {Wed Mar 30 00:00:00 EDT 2022},
month = {Wed Mar 30 00:00:00 EDT 2022}
}
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