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Tippets CA, Li Q, Fu Y, et al. Dynamic Optical Gratings Accessed by Reversible Shape Memory. ACS Appl Mater Interfaces. 2015;7(26):14288-93doi: 10.1021/acsami.5b02688.
Tippets, C. A., Li, Q., Fu, Y., Donev, E. U., Zhou, J., Turner, S. A., Jackson, A. M., Ashby, V. S., Sheiko, S. S., & Lopez, R. (2015). Dynamic Optical Gratings Accessed by Reversible Shape Memory. ACS applied materials & interfaces, 7(26), 14288-93. https://doi.org/10.1021/acsami.5b02688
Tippets, Cary A, et al. "Dynamic Optical Gratings Accessed by Reversible Shape Memory." ACS applied materials & interfaces vol. 7,26 (2015): 14288-93. doi: https://doi.org/10.1021/acsami.5b02688
Tippets CA, Li Q, Fu Y, Donev EU, Zhou J, Turner SA, Jackson AM, Ashby VS, Sheiko SS, Lopez R. Dynamic Optical Gratings Accessed by Reversible Shape Memory. ACS Appl Mater Interfaces. 2015 Jul 08;7(26):14288-93. doi: 10.1021/acsami.5b02688. Epub 2015 Jun 29. PMID: 26081101.
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ACS Appl Mater Interfaces. 2015 Jul 08;7(26):14288-93. doi: 10.1021/acsami.5b02688. Epub 2015 Jun 29.

Dynamic Optical Gratings Accessed by Reversible Shape Memory.

ACS applied materials & interfaces

Cary A Tippets, Qiaoxi Li, Yulan Fu, Eugenii U Donev, Jing Zhou, Sara A Turner, Anne-Martine S Jackson, Valerie Sheares Ashby, Sergei S Sheiko, Rene Lopez

Affiliations

  1. †Department of Applied Physical Sciences, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, United States.
  2. ‡Department of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, United States.
  3. §Department of Physics and Astronomy, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, United States.

PMID: 26081101 DOI: 10.1021/acsami.5b02688

Abstract

Shape memory polymers (SMPs) have been shown to accurately replicate photonic structures that produce tunable optical responses, but in practice, these responses are limited by the irreversibility of conventional shape memory processes. Here, we report the intensity modulation of a diffraction grating utilizing two-way reversible shape changes. Reversible shifting of the grating height was accomplished through partial melting and recrystallization of semicrystalline poly(octylene adipate). The concurrent variations of the grating shape and diffraction intensity were monitored via atomic force microscopy and first order diffraction measurements, respectively. A maximum reversibility of the diffraction intensity of 36% was repeatable over multiple cycles. To that end, the reversible shape memory process is shown to broaden the functionality of SMP-based optical devices.

Keywords: elastomers; photonic structures; responsive surfaces; reversible shape memory; shape memory polymers

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