Advanced Optical Materials

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Recently Published Articles

  1. Electroactive Tuning of Double-Layered Metamaterials Based on π-Conjugated Polymer Actuators

    Tatsunosuke Matsui, Yuto Inose, David A. Powell and Ilya V. Shadrivov

    Article first published online: 5 OCT 2015 | DOI: 10.1002/adom.201500276

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    Electroactive metadevices utilizing π-conjugated polymer are presented. Linear actuators made from heavily doped polypyrrole films are utilized to change the relative lateral position of two THz metasurfaces, and accordion-shaped origami actuators are used to change the distance between two microwave meta-atoms. In both cases significant tunability of the resonances is obtained by the application of a control voltage.

  2. One-Step Exfoliation and Hydroxylation of Boron Nitride Nanosheets with Enhanced Optical Limiting Performance

    Gang Zhao, Fang Zhang, Yongzhong Wu, Xiaopeng Hao, Zhengping Wang and Xinguang Xu

    Article first published online: 5 OCT 2015 | DOI: 10.1002/adom.201500415

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    Chemical exfoliation is a simple and efficient method of preparing h-BN nanosheets. These nanolayers present a high solubility in water because of the hydroxylation of h-BN (OH-BNNS). Interestingly, the as-prepared OH-BNNSs exhibit excellent optical limiting properties with fascinating two-photon absorption. These nanosheets form a new and advanced optical material for sensitive optical components or for shielding human eyes from laser-induced damage.

  3. Single Pixel Quadrature Imaging with Metamaterials

    Christian C. Nadell, Claire M. Watts, John A. Montoya, Sanjay Krishna and Willie J. Padilla

    Article first published online: 5 OCT 2015 | DOI: 10.1002/adom.201500435

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    Quadrature amplitude modulation is implemented in a single pixel imaging system, enabled by all-electronic metamaterial spatial light modulation. Experimental images at 3.2 THz are acquired to demonstrate the expected doubling of efficiency over previous single pixel systems. Results are deterministic and show no loss of image fidelity compared to nonquadrature methods.

  4. Characterization of a Mechanically Tunable Gyroid Photonic Crystal Inspired by the Butterfly Parides Sesostris

    Caroline Pouya, Johannes T. B. Overvelde, Mathias Kolle, Joanna Aizenberg, Katia Bertoldi, James C. Weaver and Pete Vukusic

    Article first published online: 25 SEP 2015 | DOI: 10.1002/adom.201500436

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    A mechanically tunable macroscale replica of the gyroid photonic crystal found in the Parides sesostris butterfly's wing scales is systematically characterized. By monitoring both photonic frequency changes and the distribution of stress fields within the compressed structure, electromagnetic transmission features are found and can be frequency-tuned and the structure only contains localized high stress fields when highly compressed.

  5. Surface-Energy-Driven Growth of ZnO Hexagonal Microtube Optical Resonators

    Jinxin Zhan, Hongxing Dong, Shulin Sun, Xiaodong Ren, Jianjun Liu, Zhanghai Chen, Christoph Lienau and Long Zhang

    Article first published online: 24 SEP 2015 | DOI: 10.1002/adom.201500442

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    Tubular ZnO microcavities with different wall thickness–radius ratios are synthesized by a novel surface-energy-driven micro/nanotube growth model, which is well interpreted by first-principles calculations. Emission spectra of such tubes reveal distinct whispering gallery and wave-guided interference fringes, which distinctly depend on the wall thickness–radius ratio, as verified by finite-element-method simulations.