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Three-dimensional printing in hydrogel for a complex waveguiding photothermal microactuator

Authors :
Jing Yan
Qiwei Zhang
Jiang Liu
Yuming Fang
Jianan Yao
Daye Ding
Zhiming Tian
Li Ruozhou
Source :
OSA Continuum. 4:1555
Publication Year :
2021
Publisher :
Optica Publishing Group, 2021.

Abstract

Photothermal microactuators are often used as microswitches or microgrippers in micro-electromechanical systems, whereas it is difficult to fabricate three-dimensional microactuators with a high aspect ratio, since the gravity may lead to undesired deformations during printing processes. In this work, we reported a 3D printing / UV curing process flow in the support of a hydrogel to obtain a photothermal microactuator with a high-aspect-ratio polyline waveguiding structure. The waveguiding structure also served as the driving arm. The temperature parameter was investigated by the Finite Element Method while the experiment was carried out to study the temperature and displacement during the laser actuation. A demonstration showed the driving arm achieves a free-end displacement of 133.2 µm driven by 90 mW laser (46.1°C). This study helps obtain waveguiding photothermal microactuators with integrated and more complex multi-dimensional structures.

Details

ISSN :
25787519
Volume :
4
Database :
OpenAIRE
Journal :
OSA Continuum
Accession number :
edsair.doi...........7b86bdada9bf66ba6bec45463da91003
Full Text :
https://doi.org/10.1364/osac.418590