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  1. Electrostatic-Driven Exfoliation and Hybridization of 2D Nanomaterials

    Guijian Guan, Jing Xia, Shuhua Liu, Yuan Cheng, Shiqiang Bai, Si Yin Tee, Yong-Wei Zhang and Ming-Yong Han

    Version of Record online: 22 JUN 2017 | DOI: 10.1002/adma.201700326

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    An electrostatic-driven exfoliation strategy is demonstrated for the first time to directly and conveniently cleave WO3 powder into atomically thin WO3 nanosheets with improved dispersity and stability for enhanced properties (the effective exfoliation is also extended to prepare stable black-phosphorus nanosheets). Furthermore, simultaneous exfoliation and hybridization of WO3 and MoS2 nanosheets are readily achieved to create hybrid WO3/MoS2 nanosheets.

  2. Photoresponsive Smart Coloration Electrochromic Supercapacitor

    Tae Gwang Yun, Donghyuk Kim, Yong Ho Kim, Minkyu Park, Seungmin Hyun and Seung Min Han

    Version of Record online: 22 JUN 2017 | DOI: 10.1002/adma.201606728

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    A cellulose-nanofiber-based electrochromic supercapacitor that undergoes selective photoresponsive smart coloration in response to varying light intensity is developed. High transmittance, flexibility, and improved electrochemical and electrochromic performance make this system suitable for wearable electronics and architectural energy-saving storage applications.

  3. Hybrid Lead Halide Perovskites for Ultrasensitive Photoactive Switching in Terahertz Metamaterial Devices

    Manukumara Manjappa, Yogesh Kumar Srivastava, Ankur Solanki, Abhishek Kumar, Tze Chien Sum and Ranjan Singh

    Version of Record online: 22 JUN 2017 | DOI: 10.1002/adma.201605881

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    Remarkable photoconductivity of solution-processed ultrathin perovskite film at terahertz frequencies is exploited for low-power, high-speed photoactive switching of the Fano resonance in a hybrid perovskite–metamaterial device. At higher pump fluences, a mode-splitting behavior is observed, which manifests a phonon–metamaterial resonance coupling in the proposed system.

  4. Evolutionary-Optimized Photonic Network Structure in White Beetle Wing Scales

    Bodo D. Wilts, Xiaoyuan Sheng, Mirko Holler, Ana Diaz, Manuel Guizar-Sicairos, Jörg Raabe, Robert Hoppe, Shu-Hao Liu, Richard Langford, Olimpia D. Onelli, Duyu Chen, Salvatore Torquato, Ullrich Steiner, Christian G. Schroer, Silvia Vignolini and Alessandro Sepe

    Version of Record online: 22 JUN 2017 | DOI: 10.1002/adma.201702057

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    The brilliant white color of Cyphochilus beetles arises from random scattering of incident light at a disordered network structure made up of chitin. This complex biological network is characterized by cryo X-ray nanotomography imaging, and this study shows that it is evolutionary optimized for lightness and material use.

  5. Carbon-Coated Li3VO4 Spheres as Constituents of an Advanced Anode Material for High-Rate Long-Life Lithium-Ion Batteries

    Laifa Shen, Shuangqiang Chen, Joachim Maier and Yan Yu

    Version of Record online: 22 JUN 2017 | DOI: 10.1002/adma.201701571

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    Advanced carbon-coated LVO (LVO⊂C) sub-micrometer spheres comprising nanoscale carbon-coating primary particles are synthesized by a morphology-inheritance route. When combined with a LiNi0.5Mn1.5O4 cathode, the rationally designed full cell demonstrates an estimated energy density of 205 W h kg−1, high-power performances up to 20 C, and pronounced long-term cyclability.