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  1. Optical Activity of Chiral Nanoscrolls

    Anvar S. Baimuratov, Yurii K. Gun'ko, Alexey G. Shalkovskiy, Alexander V. Baranov, Anatoly V. Fedorov and Ivan D. Rukhlenko

    Version of Record online: 21 FEB 2017 | DOI: 10.1002/adom.201600982

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    A simple analytical theory of the optical activity of chiral nanoscrolls is presented. The theory provides expressions for the rotatory strengths upon interband and intraband optical transitions inside semiconductor nanoscrolls, which can be useful for modeling and interpretation of chiroptical responses of nanoscroll ensembles fabricated by ultrasound exfoliation of semiconductor materials in the presence of chiral ligands.

  2. An Innovative Postdeposition Annealing Approach Producing Centimeter-Scale In2O3/In2(TeO3)3 Bulk Heterojunction Thin Film for Room-Temperature Persistent Photoconductivity

    Jiandong Yao, Zhaoqiang Zheng and Guowei Yang

    Version of Record online: 20 FEB 2017 | DOI: 10.1002/adom.201600908

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    A centimeter-scale In2O3/In2(TeO3)3 bulk heterojunction thin films is achieved via an initial pulsed-laser deposition followed by a postdeposition annealing. A prototype optoelectronic device is fabricated and it exhibits pronounced persistent photoconductivity from ultraviolet to red. In addition, flexibility is demonstrated by exploiting a mica substrate, which demonstrates potential for wearable devices and provides tunable and extended focus ranges for photoexcitation.

  3. Coupling Surface Plasmon Polariton Modes to Complementary THz Metasurfaces Tuned by Inter Meta-Atom Distance

    Janine Keller, Curdin Maissen, Johannes Haase, Gian Lorenzo Paravicini-Bagliani, Federico Valmorra, José Palomo, Juliette Mangeney, Jérôme Tignon, Sukhdeep S. Dhillon, Giacomo Scalari and Jérôme Faist

    Version of Record online: 20 FEB 2017 | DOI: 10.1002/adom.201600884

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    The inductive-capacitive (LC-)resonance of a complementary split ring resonator (cSRR) array is observed to strongly couple to surface plasmon polaritons leading to an anti-crossing of the modes. The surface plasmon polariton resonance frequency is tuned by the distance of the cSRR in the array while the resonator shape and thus the LC-mode and the dipole-like resonance frequencies are kept constant.

  4. Garnet Scintillators of Superior Timing Characteristics: Material, Engineering by Liquid Phase Epitaxy

    Petr Průša, Miroslav Kučera, Vladimir Babin, Petr Brůža, Dalibor Pánek, Alena Beitlerová, Jiri A. Mareš, Martin Hanuš, Zuzana Lučeničová and Martin Nikl

    Version of Record online: 20 FEB 2017 | DOI: 10.1002/adom.201600875

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    This is the first attempt to combine modern methods for improvement of garnet scintillators properties: Mg-co-doping, “band-gap engineering,” and liquid phase epitaxy growth. Resulting garnet scintillator films exhibit main scintillator characteristics comparable to single crystal counterparts. Moreover, timing characteristics significantly improve, afterglow being particularly reduced to the lowest level ever observed in the garnet scintillator.

  5. A High Performance Deep Blue Organic Laser Gain Material

    Qi Wei, Yan Li, Jingguan Liu, Qiyun Fang, Jiewei Li, Xiaohong Yan, Linghai Xie, Yan Qian, Ruidong Xia and Wei Huang

    Version of Record online: 20 FEB 2017 | DOI: 10.1002/adom.201601003

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    The carbazole-end-capped ladder-type oligo-(p-phenylene) DCz-LPh5 is demonstrated as an excellent optical gain media for low-threshold (0.6 nJ pulse−1) deep blue distributed feedback lasers. Moreover, hole mobility is determined as 10−3 cm2 V−1 s−1 using the space-charge limited current method. Notably, a very low amplified spontaneous emission threshold is maintained in very thin films (16 nJ pulse−1 with 45 nm thickness).