Feedbacks in light-active soft materials

Jianfeng Yang, Haotian Pi, Hang Zhang, Hao Zeng*

*Tämän työn vastaava kirjoittaja

Tutkimustuotos: Artikkeli kirjassa/konferenssijulkaisussaConference article in proceedingsScientific

31 Lataukset (Pure)

Abstrakti

Imitating the self-regulated motions of natural species allows for novel applications in inanimate material systems. These applications include autonomous robotic systems, adaptive devices, and auto-energy harvesting. However, significant challenges exist in accurately controlling stimulus-induced deformations and establishing a reliable relationship between external energy fields and material deformations. In this study, we demonstrate that a simple light-triggered bending actuation in smart material systems based on liquid crystal elastomers is influenced by an opto-mechano-optical feedback mechanism. The pre-curved geometry enables enhance of light absorption upon photothermally induced deformation (from bent to flat), followed by a reduce of energy absorption upon further deformation (from flattening to bending toward the light). This strong nonlinearity in stimulus-induced deformability is governed by positive and negative feedback, and we experimentally verified these mechanisms using a thermal camera. Our results reveal the ubiquitous feedback nature of most light-active polymer systems.

AlkuperäiskieliEnglanti
OtsikkoSmart Materials for Opto-Electronic Applications
ToimittajatIvo Rendina, Lucia Petti, Domenico Sagnelli, Giuseppe Nenna
KustantajaSPIE
Sivut1-4
Sivumäärä4
ISBN (elektroninen)978-1-5106-6288-9
DOI - pysyväislinkit
TilaJulkaistu - 9 kesäk. 2023
OKM-julkaisutyyppiB3 Vertaisarvioimaton artikkeli konferenssijulkaisussa
TapahtumaSmart Materials for Opto-Electronic Applications - Prague, Tshekki
Kesto: 25 huhtik. 202327 huhtik. 2023

Julkaisusarja

NimiProceedings of SPIE - The International Society for Optical Engineering
KustantajaSPIE
Vuosikerta12584
ISSN (painettu)0277-786X
ISSN (elektroninen)1996-756X

Conference

ConferenceSmart Materials for Opto-Electronic Applications
Maa/AlueTshekki
KaupunkiPrague
Ajanjakso25/04/202327/04/2023

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