Now showing items 1-8 of 8

    • Electrically Switchable and Permanently Stable Light Scattering Modes by Dynamic Fingerprint Chiral Textures 

      Cheng, Ko-Ting; Lee, Po-Yi; Qasim, Malik Muhammad; Liu, Cheng-Kai; Cheng, Wen-Fa; Wilkinson, Timothy David (American Chemical Society, 2016-04-01)
      Negative dielectric nematic liquid crystals (LCs) doped with two azobenzene materials provide electrically switchable and permanently stable scattering mode light modulators based on dynamic fingerprint chiral textures ...
    • Engineering high charge transfer n-doping of graphene electrodes and its application to organic electronics 

      Sanders, Simon; Cabrero-Vilatela, Andrea; Kidambi, Piran Ravichandran; Alexander-Webber, Jack Allen; Weijtens, Christ; Braeuninger, Philipp; Aria, Adrianus Indrat et al. (Royal Society of Chemistry, 2015-07-06)
      Using thermally evaporated cesium carbonate (Cs_2CO_3) in an organic matrix, we present a novel strategy for efficient n-doping of monolayer graphene and a ~90% reduction in its sheet resistance to ~250 Ohm/sq. Photoemission ...
    • Graphene and chiral nematic liquid crystals: a focus on lasing 

      Khan, Ammar; Kamarudin, Muhammad Akmal; Kidambi, Piran Ravichandran; Hofmann, Stephan; Wilkinson, Timothy David; Qasim, Malik Muhammad (Royal Society of Chemistry, 2015-07-01)
      This work presents the interaction of self-assembled liquid crystalline (LC) unidimensional photonic structures on the surface of polycrystalline graphene. Further, this surface effect is studied through different substrate ...
    • Homologous binary mixtures and improved hole conduction of self-assembled discotic liquid crystals 

      Khan, Ammar A; Rughoobur, Girish; Kamarudin, Muhammad A; Sepe, Alessandro; Dolan, James A; Flewitt, Andrew John; Qasim, Malik Muhammad et al. (Elsevier, 2016-05-31)
      Discotic liquid crystals (DLCs) are considered promising materials for organo-electronic applications. Columnar alignment of DLCs leads to anisotropic charge transport with high charge carrier mobility. However, pure DLCs ...
    • Hybrid Graphene Nematic Liquid Crystal Light Scattering Device 

      Qasim, Malik Muhammad; Khan, AA; Kostanyan, A; Kidambi, Piran Ravichandran; Cabrero-Vilatela, A; Braeuninger-Weimer, Philipp; Gardiner, DJ et al. (Royal Society of Chemistry, 2015-08-05)
      A hybrid graphene nematic liquid crystal (LC) light scattering device is presented. This device exploits the inherent poly-crystallinity of chemical vapour deposited (CVD) graphene films to induce directional anchoring and ...
    • Improving the stability of organosiloxane smectic A liquid crystal random lasers using redox dopants 

      Khan, Ammar A; Morris, Stephen M; Gardiner, Damian J; Qasim, Malik Muhammad; Wilkinson, Timothy David; Coles, Harry J (Elsevier, 2015-02-26)
      This report is focus on the development of liquid crystal (LC) vis ible - light scattering devices for random lasers. These light - scattering devices are based upon binary mixtures that consist of an organosiloxane smectic ...
    • Self-assembled liquid crystalline nanotemplates and their incorporation in dye-sensitised solar cells 

      Kamarudin, MA; Khan, Ammar Ahmed; Williams, Calum; Rughoobur, Girish; Said, SM; Nosheen, Shabeena; Flewitt, Andrew John et al. (Elsevier, 2016-12-20)
      Liquid junction dye-sensitised solar cells (DSSCs) suffer from solvent evaporation and leakage which limit their large-scale production. Here, we have prepared DSSC using a simple and cheap fabrication process with improved ...
    • Stretchable liquid-crystal blue-phase gels 

      Castles, F; Morris, SM; Hung, JMC; Qasim, Malik Muhammad; Wright, AD; Nosheen, Shabeena; Choi, SS et al. (2014-01-01)