Autonomous Self‐Sustained Liquid Crystal Actuators Enabling Active Photonic Applications

Author:

Zheng Ren1,Ma Lingling1,Feng Wei2,Pan Jintao1,Wang Zeyu1,Chen Zhaoxian1,Zhang Yiheng1,Li Chaoyi1,Chen Peng1,Bisoyi Hari Krishna3,Li Bingxiang4,Li Quan35,Lu Yanqing1ORCID

Affiliation:

1. National Laboratory of Solid State Microstructures Key Laboratory of Intelligent Optical Sensing and Manipulation College of Engineering and Applied Sciences Collaborative Innovation Center of Advanced Microstructures Nanjing University Nanjing 210023 China

2. Physical Intelligence Department Max Planck Institute for Intelligent Systems 70569 Stuttgart Germany

3. Advanced Materials and Liquid Crystal Institute and Materials Science Graduate Program Kent State University Kent OH 44242 USA

4. College of Electronic and Optical Engineering & College of Flexible Electronics (Future Technology) Nanjing University of Posts and Telecommunications Nanjing 210023 China

5. Institute of Advanced Materials and School of Chemistry and Chemical Engineering Southeast University Nanjing 211189 China

Abstract

AbstractAdvances in biomimicry have led to the rise of advanced robotics, posing promising revolutions across a variety of fields. Programmable self‐sustained actuation in nature, such as human's heart beating, bird's wingbeats, and penguin's waddling, are intriguing and inspiring but challenging for device innovation, which hinders the emergence of autonomous self‐feedback applications, especially in optics and photonics. Herein, the design, fabrication, and operation of crosslinked liquid crystal actuators are described that combine the programming of microstructures and the engineering of macroscopic shape morphing for active optics and photonics. The actuators consist of twisted nematic liquid crystal molecules with both elastic and optical anisotropies, resulting in large bending deformations in response to heat. Programmable bending motions and self‐sustained waddling oscillations are demonstrated, further contributing to the achievements of dynamic 2D beam steering and self‐sustained light field modulation. It is envisioned that these actuators with self‐sustained performances without requiring turning the stimulus on‐off will find applications in autonomous active optical systems, photonic applications, as well as self‐governing robotics with the core feature of thermo‐mechanical‐optical transduction.

Funder

National Key Research and Development Program of China

National Natural Science Foundation of China

Natural Science Foundation of Jiangsu Province

Publisher

Wiley

Subject

Electrochemistry,Condensed Matter Physics,Biomaterials,Electronic, Optical and Magnetic Materials

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