Li yong, a visiting scholar in the research group of associate professor luo Dan of the department of electronic and electrical engineering, published a cover article in j. Mater. Chem. C as the first author

2017-12-15

Recently, li yong, a visiting scholar in the research group of associate professor luo Dan of the department of electronic and electrical engineering, served as the first author in j. Mater. Chem. C (IF: 6.641) A cover article entitled A photoswitchable and phototunable microlens based on chiral liquid crystals was published in the journal as the 2019 j. Mater. Chem. C HOT papers, with associate professor rodin of the department of electrical and electronic engineering of southern university of science and technology as the corresponding author.

                                                                                                      
                                                                                                                        Cover photo
With the development of science and technology and the market demand, tunable lens is regarded as one of the research hotspots by scientists at home and abroad. In recent years, the pancharatnam-type phase lens based on cholesteric liquid crystal self-assembly has the advantages of tunable, easy preparation and low cost, and has a good application prospect in AR VR, optical sensing and other fields.
Tunability of tunable Pancharatnam-type phase lens based on liquid crystal has not been fully developed and utilized. For the first time, a phototunable and tunable bistable microlens based on cholesteric liquid crystal doped with azobenzene chiral agent was proposed. The bistable microlens can focus and scatter by ultraviolet and green light respectively. The focal length of the microlens can be continuously tunable under the irradiation of low power ultraviolet and green light.

                                                                                           
                               This is an optical image of the bistable microlens tuning mechanism and the focusing and divergence states
Compared with the previously reported microlens, optical manipulation bistable and tunable microlens technology offers new possibilities and a broader application prospect. The phototunable and tunable bistable microlens based on cholesteric liquid crystal doped with azobenzene chiral agent has many advantages such as tunable, tunable, simple preparation and low cost. The bistable liquid crystal microlens can be used in imaging and sensing applications.

Li yong, the first author of the paper, is a visiting scholar in the department of electronic and electrical engineering, southern university of science and technology. He joined southern university of science and technology in 2014 and has published more than 10 academic papers as the first author.

Links to papers:

https://pubs.rsc.org/en/content/articlelanding/2019/tc/c9tc04862f#! divAbstract