Publications by authors named "Zenghua Gan"
Fractional Talbot Lithography for Predesigned Large-Area Liquid-Crystal Alignment.
Materials (Basel)
September 2024
Article Synopsis
- A fractional Talbot lithography alignment technique was developed to improve the cost-effectiveness and precision of liquid crystal alignment over large areas.
- The technique enhances lithography resolution by utilizing a light intensity distribution from a photomask, significantly reducing costs while providing a uniform alignment with advanced anchoring energy.
- This method's effectiveness was demonstrated using polymer gratings and concentric rings, enabling wide tuning ranges for generating unique optical fields and potential applications in liquid-crystal displays and complex optical systems.
Two-color lasing emission from an asymmetric structure, consisting of two dye-doped cholesteric liquid crystal (DD-CLC) layers separated by a transparent interlayer, is demonstrated. The DD-CLC mixtures have different reflection bands with long-wavelength band edges located at the green and red wavelengths of the visible spectrum, respectively. For the laser action, the CLC hosts provide the feedback, and the fluorescent laser dyes represent the active medium.
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