journal article·2021-03-03

Electrically Adaptive and Shape-Changeable Invertible Microlens

Jin Woo Bae, Dong-Soo Choi, In-Ho Yun, Dong-Heon Han, Seung-Ju Oh, Tae-Hoon Kim, Jeong Ho Cho, Liwei Lin, Sang-Youn Kim

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Abstract

Existing soft actuators for adaptive microlenses suffer from high required input voltage, optical loss, liquid loss, and the need for assistant systems. In this study, we fabricate a polyvinyl chloride-based gel using a new synergistic plasticization method to achieve simultaneously a high optical transparency and an ultrasoft rubber-like elastic behavior with a large voltage-induced deformation under a weak electric field. By compressing the smooth gel between two sets of annular electrodes, a self-contained biconvex microlens is realized that is capable of considerable shape changes in the optical path. Each surface of the dual-curvature microlens can be independently adjusted to focus or scatter light to capture real or virtual images, yield variable focal lengths (+31.8 to -11.3 mm), and deform to various shapes to improve aberrations. In addition to simple fabrication, our microlens operates silently and consumes low power (0.52 mW), making it superior to existing microlenses.
Source: openalex_inverted_index · Quality: baseline

Research context

OpenAlex topics: Electrowetting and Microfluidic Technologies · Photonic and Optical Devices · Advanced Materials and Mechanics

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Multifunctional Organic Polymer Laboratory, Future Convergence Engineering, School of Energy, Materials and Chemical Engineering, Korea University of Technology and Education, 1600, Chungjeol-ro, Cheonan 31253, Republic of Korea

School of Computer Science, College of Engineering and Information Technology, Semyung University, 65, Semyung-ro, Jecheon 27136, Republic of Korea

Interaction Laboratory, Future Convergence Engineering, Advanced Technology Research Center, Korea University of Technology and Education, 1600, Chungjeol-ro, Cheonan 31253, Republic of Korea

Department of Chemical and Biomolecular Engineering, Yonsei University, 50, Yonsei-ro, Seoul 03722, Republic of Korea

Department of Mechanical Engineering, University of California at Berkeley, Berkeley, California 94720, United States

Funding

Ministry of Education · Korea University of Technology and Education

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