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Programming mechanoluminescent behaviors of 3D printed cellular structures
Journal article   Open access   Peer reviewed

Programming mechanoluminescent behaviors of 3D printed cellular structures

Jiayu Zhao, Seongkyu Song, Xuan Mu, Soon Moon Jeong and Jinhye Bae
Nano energy, Vol.103(A), 107825
12/01/2022
DOI: 10.1016/j.nanoen.2022.107825
url
https://doi.org/10.1016/j.nanoen.2022.107825 View
Published (Version of record) Open Access

Abstract

Mechanoluminescence (ML) materials enable the transformation of mechanical stimuli into optical signals. However, current ML devices have limited luminescent programmability and mechanical tunability due to the relatively simple geometries as restricted by the conventional fabrication techniques. Here, we develop a strategy that is applicable for various types of zinc sulfide (ZnS)-based phosphors for allowing the fabrication of ML elastomer into complex 2D or 3D geometries with periodic cellular structures. We demonstrate that different cellular structures with tunable mechanical properties enable programmable structure-dependent ML behaviors including anisotropic and isotropic luminescence. We further exploit the quantitative structure-stress-luminescence relationship, which provides fundamental knowledge support for designing next-generation ML-based stress sensors and wearable devices.
Mechanoluminescence 3D printing Granular materials Elastomers Stress sensors

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