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  1. MOF Thin Film-Coated Metal Oxide Nanowire Array: Significantly Improved Chemiresistor Sensor Performance

    Ming-Shui Yao, Wen-Xiang Tang, Guan-E Wang, Bhaskar Nath and Gang Xu

    Article first published online: 6 MAY 2016 | DOI: 10.1002/adma.201506457

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    A strategy for combining metal oxides and metal–organic frameworks is proposed to design new materials for sensing volatile organic compounds, for the first time. The prepared ZnO@ZIF-CoZn core–sheath nanowire arrays show greatly enhanced performance not only on its selectivity but also on its response, recovery behavior, and working temperature.

  2. Moisture-Driven Ceramic Bilayer Actuators from a Biotemplating Approach

    Daniel Van Opdenbosch, Gerhard Fritz-Popovski, Wolfgang Wagermaier, Oskar Paris and Cordt Zollfrank

    Article first published online: 6 MAY 2016 | DOI: 10.1002/adma.201600117

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    The former ovuliferous scales of biotemplated cones of Pinus nigra show moisture-driven actuation similar to their biological templates, demonstrating a facile route to obtain ceramic moisture-sensitive bilayer actuators. Based on comparative analysis of their hierarchical nanometer-precision replica structures, using, e.g., spatially resolved small-angle X-ray scattering, the origin of the actuation is explained.

  3. Direct Patterning of Organic Functional Polymers through Conventional Photolithography and Noninvasive Cross-Link Agents

    Marco A. Squillaci, Feng Qiu, Alessandro Aliprandi, Fan Zhang, Xinliang Feng and Paolo Samorì

    Article first published online: 6 MAY 2016 | DOI: 10.1002/adma.201600329

    Thumbnail image of graphical abstract

    A new technique for direct patterning of functional organic polymers using commercial photolithography setups with a minimal loss of the material's performances is reported. This result is achieved through novel cross-link agents made by boron- and fluorine-containing heterocycles that can react between themselves upon UV- and white-light exposure.

  4. Microfluidic Generation of Monodisperse and Photoreconfigurable Microspheres for Floral Iridescence–Inspired Structural Colorization

    Seon Ju Yeo, Kyung Jin Park, Kai Guo, Pil J. Yoo and Seungwoo Lee

    Article first published online: 6 MAY 2016 | DOI: 10.1002/adma.201600425

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    Flowering plants have evolved their structural coloration strategies exquisitely to split various vivid colors into a spatially distributed sequence by using the 2D diffraction elements, confined onto curved surface. Herein, a new strategy of artificially mimicking floral-inspired grating diffractive motifs onto the monodisperse and smooth microspheres is reported, developed by microfluidics; thus, the accessible design space of structural colorization can be greatly expanded.

  5. Intrinsic Photoluminescence Emission from Subdomained Graphene Quantum Dots

    Hyewon Yoon, Yun Hee Chang, Sung Ho Song, Eui-Sup Lee, Sung Hwan Jin, Chanae Park, Jinsup Lee, Bo Hyun Kim, Hee Jae Kang, Yong-Hyun Kim and Seokwoo Jeon

    Article first published online: 6 MAY 2016 | DOI: 10.1002/adma.201600616

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    The photoluminescence (PL) origin of bright blue emission arising from intrinsic states in graphene quantum dots (GQDs) has been investigated. The bright PL of intercalatively acquired GQDs is attributed to favorably formed subdomains composed of four to seven carbon hexagons. Random and harsh oxidation which hinders the energetically favorable formation of subdomains causes weak and redshifted PL.

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