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A self-assembled polyimide layer based on graphene quantum dots for ultrafast switching of liquid crystals
- Authors
- Park, Chan Beom; Choi, Jin-Wook; Son, Seung-Rak; An, Jongil; Park, Jisung; Kim, Soyern; Lee, Jun Hyup
- Issue Date
- Sep-2022
- Publisher
- TAYLOR & FRANCIS LTD
- Keywords
- Graphene quantum dots; interfacial self-assembly; liquid crystals; polyimide layer; ultrafast switching
- Citation
- MOLECULAR CRYSTALS AND LIQUID CRYSTALS, v.739, no.1, pp.72 - 77
- Journal Title
- MOLECULAR CRYSTALS AND LIQUID CRYSTALS
- Volume
- 739
- Number
- 1
- Start Page
- 72
- End Page
- 77
- ISSN
- 1542-1406
- Abstract
- Graphene quantum dots (GQDs) with a large specific surface area, wide emission spectrum, and low toxicity are advantageous for biomedical and optoelectronic applications. Here, we present a facile method to simultaneously provide ultrafast electro-optical switching and strong vertical anchoring of liquid crystals (LCs) using interfacial self-assembly between alkylated GQDs and polyimide (PI) layers in a closed LC device. The newly fabricated self-assembled PI layer with alkylated GQDs were simply fabricated by doping GQDs into the LC medium, and induced a stable and uniform homeotropic alignment of LCs. Moreover, this self-assembled layer provided a superfast switching speed for the device.
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Collections - College of Engineering > Department of Chemical Engineering > 1. Journal Articles
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Related Researcher
- Lee, Jun Hyup
- College of Engineering (Department of Chemical)