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  1. Microengineering of Optical Properties of GeO2 Glass by Ultrafast Laser Nanostructuring

    Fangteng Zhang, Ausra Cerkauskaite, Rokas Drevinskas, Peter G. Kazansky and Jianrong Qiu

    Version of Record online: 18 OCT 2017 | DOI: 10.1002/adom.201700342

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    Ultrafast laser direct-write nanostructuring of GeO2 glass leads to the formation of local form birefringence with a polarization-dependent optical slow axis. Manipulation of the retardance value and the orientation of the local optical axis of the induced-form birefringence enables fabrication of various optical elements with continuous phase profiles such as radial polarization vortex converters and computer-generated holograms.

  2. Periodic Dielectric Metasurfaces with High-Efficiency, Multiwavelength Functionalities

    David Sell, Jianji Yang, Sage Doshay and Jonathan A. Fan

    Version of Record online: 16 OCT 2017 | DOI: 10.1002/adom.201700645

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    An inverse optimization design method that can produce high-efficiency, multiwavelength metasurfaces is reported. As a proof of concept, periodic transmissive metasurfaces made from silicon are designed and characterized. These devices deflect N different incident near-infrared wavelengths to N unique diffraction orders, and their absolute efficiencies scale as 1/N0.5, which is significantly better than current state-of-the-art devices.

  3. Improving the Power Efficiency of Solution-Processed Phosphorescent WOLEDs with a Self-Host Blue Iridium Dendrimer

    Shumeng Wang, Qingqing Yang, Baohua Zhang, Lei Zhao, Debin Xia, Junqiao Ding, Zhiyuan Xie and Lixiang Wang

    Version of Record online: 16 OCT 2017 | DOI: 10.1002/adom.201700514

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    Solution-processed phosphorescent white organic light-emitting diodes (WOLEDs) with improved power efficiency are reported by simply blending a yellow phosphor Ir(Flpy-CF3)3 into a self-host blue iridium dendrimer B-G2. Attributable to the elimination of the host-induced power efficiency losses existing in the traditional host-based devices, a state-of-the-art total power efficiency as high as 48.8–62.8 lm W–1 is achieved at 1000 cd m–2.

  4. The Next-Generation of Nonlinear Optical Materials: Rb3Ba3Li2Al4B6O20F—Synthesis, Characterization, and Crystal Growth

    Hongwei Yu, Joshua Young, Hongping Wu, Weiguo Zhang, James M. Rondinelli and Shiv Halasyamani

    Version of Record online: 10 OCT 2017 | DOI: 10.1002/adom.201700840

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    A next-generation technologically viable nonlinear optical crystal, Rb3Ba3Li2Al4B6O20F, is successfully designed, synthesized, characterized, and grown. This crystal not only solves the layering issue observed in KBe2BO3F and Sr2Be2B2O7, which has hindered their crystal growth, but also does not require the use of toxic BeO in the synthesis. More importantly, it exhibits a moderate birefringence and is nonhygroscopic.

  5. Molecular-Printed Thermochromic with Fast Color Switching

    Sungjun Cho, Gwangmook Kim, Sooun Lee, Jinwoo Park and Wooyoung Shim

    Version of Record online: 10 OCT 2017 | DOI: 10.1002/adom.201700627

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    A molecular-printed thermochromic reflective color display that can generate fast color switching is realized by printing monolayerd thermochromic ink. To induce color switching, local heating is used to activate the printed ink on a resistive heater array. This architecture is not only simple and scalable, but also addresses the color switching limitations of chromic displays via reducing the heat capacity.

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