Now showing items 1-10 of 10

  • High speed e-beam writing for large area photonic nanostructures—a choice of parameters 

    Li, Kezheng; Li, Juntao; Reardon, Christopher; Schuster, Christian S.; Wang, Yue; Triggs, Graham J.; Damnik, Niklas; Muënchenberger, Jana; Wang, Xuehua; Martins, Emiliano R.; Krauss, Thomas F. (2016-09-16) - Journal article
    Photonic nanostructures are used for many optical systems and applications. However, some high-end applications require the use of electron-beam lithography (EBL) to generate such nanostructures. An important technological ...
  • Laser chemosensor with rapid responsivity and inherent memory based on a polymer of intrinsic microporosity 

    Wang, Yue; McKeown, Neil B.; Msayib, Kadhum J.; Turnbull, Graham A.; Samuel, Ifor D. W. (2011-03) - Journal article
    This work explores the use of a polymer of intrinsic microporosity (PIM-1) as the active layer within a laser sensor to detect nitroaromatic-based explosive vapors. We show successful detection of dinitrobenzene (DNB) by ...
  • Low threshold organic semiconductor lasers and their application as explosive sensors 

    Wang, Yue (University of St Andrews, 2012-11-30) - Thesis
    This thesis presents studies of organic semiconductor lasers, including their operation when pumped by a light-emitting diode (LED), and their application as explosive sensors. The photophysics and amplified spontaneous ...
  • Low-threshold nanoimprinted lasers using substructured gratings for control of distributed feedback 

    Rezende Martins, Emiliano; Wang, Yue; Kanibolotsky, Alexander L.; Skabara, Peter J.; Turnbull, Graham A.; Samuel, Ifor David William (2013-08) - Journal article
    A nanopatterned polymer design for lasers using substructured gratings to achieve low threshold lasing is presented. The approach provides complete control over the balance between optical feedback and output coupling. ...
  • Nanoimprinted Organic Semiconductor Laser Pumped by a Light-Emitting Diode 

    Tsiminis, Georgios; Wang, Yue; Kanibolotsky, A L; Inigo, A R; Skabara, P J; Samuel, Ifor David William; Turnbull, Graham A. (2013-05-28) - Journal article
    An organic semiconductor laser, simply fabricated by UV-nanoimprint lithography (UV-NIL), that is pumped with a pulsed InGaN LED is demonstrated. Molecular weight optimization of the polymer gain medium on a nanoimprinted ...
  • Nanoimprinted polymer lasers with threshold below 100 W/cm2 using mixed-order distributed feedback resonators 

    Wang, Yue; Tsiminis, Georgios; Kanibolotsky, Alexander L.; Skabara, Peter J.; Samuel, Ifor David William; Turnbull, Graham A. (2013-06-17) - Journal article
    Organic semiconductor lasers were fabricated by UV-nanoimprint lithography with thresholds as low as 57 W/cm2 under 4 ns pulsed operation. The nanoimprinted lasers employed mixed-order distributed feedback resonators, with ...
  • Side-chain influence on the mass density and refractive index of polyfluorenes and star-shaped oligofluorene truxenes 

    Morawska, Paulina Olga; Wang, Yue; Ruseckas, Arvydas; Orofino-Penia, C.; Kanibolotsky, A.L.; Santhanagopal, R.; Fröhlich, N.; Fritsch, M.; Allard, Sybille; Scherf, U.; Skabara, P.J.; Samuel, Ifor David William; Turnbull, Graham A. (2015-09-24) - Journal article
    The density of organic semiconductor films is an important quantity because it is related to intermolecular spacing which in turn determines the electronic and photophysical properties. We report thin film density and ...
  • Silicon photonic crystal thermal emitter at near-infrared wavelengths 

    O'Regan, Bryan; Wang, Yue; Krauss, Thomas Fraser (2015-08-21) - Journal article
    Controlling thermal emission with resonant photonic nanostructures has recently attracted much attention. Most of the work has concentrated on the mid-infrared wavelength range and/or was based on metallic nanostructures. ...
  • Subpicosecond exciton dynamics in polyfluorene films from experiment and microscopic theory 

    Denis, J.-C.; Schumacher, S.; Hedley, Gordon James; Ruseckas, Arvydas; Morawska, Paulina Olga; Wang, Yue; Allard, S.; Scherf, U.; Turnbull, Graham A.; Samuel, Ifor David William; Galbraith, I. (2015-05-07) - Journal article
    Electronic energy transfer (EET) in organic materials is a key mechanism that controls the efficiency of many processes, including light harvesting antennas in natural and artificial photosynthesis, organic solar cells, ...
  • Ultra-portable explosives sensor based on a CMOS fluorescence lifetime analysis micro-system 

    Wang, Yue; Rae, Bruce R.; Henderson, Robert K.; Gong, Zheng; Mckendry, Jonathan; Gu, Erdan; Dawson, Martin D.; Turnbull, Graham A.; Samuel, Ifor D. W. (2011-09) - Journal article
    This work explores the use of a green-light-emitting copolymer as a chemosensor to detect nitroaromatic-based explosive vapors by recording photoluminescence (PL) and time-resolved PL decay. We show successful detection ...