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  1. External-Field-Induced Gradient Wetting for Controllable Liquid Transport: From Movement on the Surface to Penetration into the Surface

    Yan Li, Linlin He, Xiaofang Zhang, Na Zhang and Dongliang Tian

    Version of Record online: 20 OCT 2017 | DOI: 10.1002/adma.201703802

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    External-field-responsive liquid transport on different levels of surfaces, owing to the dynamic balance of gradient wetting and dewetting, are highlighted, including directional liquid motion on the surface based on the wettability gradient under an external field, partial entry of a liquid into a surface to achieve patterned surface wettability for printing, and liquid-selective permeation of the film for separation.

  2. Organic Diode Rectifiers Based on a High-Performance Conjugated Polymer for a Near-Field Energy-Harvesting Circuit

    Stuart G. Higgins, Tiziano Agostinelli, Steve Markham, Robert Whiteman and Henning Sirringhaus

    Version of Record online: 20 OCT 2017 | DOI: 10.1002/adma.201703782

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    A high-performance conjugated polymer is shown to create fast organic rectifiers, which can be used in a near-field energy-harvesting circuit. The performance of this circuit is sufficient to power an interactive smart tag from a 13.56 MHz near-field communication source.

  3. Hexagonal Sphericon Hematite with High Performance for Water Oxidation

    Taiwo Odedairo, Xuecheng Yan, Xiangdong Yao, Kostya (Ken) Ostrikov and Zhonghua Zhu

    Version of Record online: 20 OCT 2017 | DOI: 10.1002/adma.201703792

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    A cost-effective hexagonal sphericon hematite (Fe ≈ 98%) with predominant (110) facets for oxygen evolution reaction (OER) is demonstrated. Sequential incorporation of near-atomic uniformly distributed Ce species and Ni nanoparticles into selected sites of the hematite induces a complex synergistic integration phenomenon that enhances the overall catalytic OER performance.

  4. Platinum-Based Nanowires as Active Catalysts toward Oxygen Reduction Reaction: In Situ Observation of Surface-Diffusion-Assisted, Solid-State Oriented Attachment

    Yanling Ma, Wenpei Gao, Hao Shan, Wenlong Chen, Wen Shang, Peng Tao, Chengyi Song, Chris Addiego, Tao Deng, Xiaoqing Pan and Jianbo Wu

    Version of Record online: 20 OCT 2017 | DOI: 10.1002/adma.201703460

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    Free-standing platinum and platinum–nickel alloy nanowires are synthesized by a modified facile hydrogen-assisted gas-phase method. In situ transmission electron microscopy observation reveals that the formation of nanowires is attributed to surface-diffusion-assisted, solid-state oriented attachment. The Pt and Pt1.3Ni-alloy nanowires exhibit promising catalytic activity and excellent stability compared with commercial Pt/C toward oxygen reduction reaction.

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    Directed Self-Assembly of Liquid-Crystalline Molecular Building Blocks for Sub-5 nm Nanopatterning

    Koen Nickmans and Albert P. H. J. Schenning

    Version of Record online: 20 OCT 2017 | DOI: 10.1002/adma.201703713

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    Emerging approaches to sub-5 nm patterning with molecular building blocks are discussed, emphasizing the use of liquid-crystalline materials to access sub-5 nm features, their directed self-assembly into oriented thin films, and the fabrication of inorganic arrays. Examples are chosen from the established fields of organic electronics, nanoporous membranes, and templated synthesis, each of which provides opportunities for nanolithography.