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  1. Large-Scale Direct-Writing of Aligned Nanofibers for Flexible Electronics

    Dong Ye, Yajiang Ding, Yongqing Duan, Jiangtao Su, Zhouping Yin and Yong An Huang

    Version of Record online: 23 FEB 2018 | DOI: 10.1002/smll.201703521

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    Highly aligned nanofibers usually exhibit exceptionally low flexural rigidities, remarkable tolerance against mechanical bending, and good compatibility with well-patterned microstructures, showing superior advantages in flexible electronics applications. An overview of the ground-breaking progress in EHD direct-writing technology for well-arranged nanofibers deposition is given, including the brief chronology, the basic principles and alignment strategies, and the abundant applications in flexible devices.

  2. Short-Wave Infrared Sensor by the Photothermal Effect of Colloidal Gold Nanorods

    Hengyang Xiang, Tingting Niu, Mathilde Schoenauer Sebag, Zhelu Hu, Xiangzhen Xu, Laurent Billot, Lionel Aigouy and Zhuoying Chen

    Version of Record online: 23 FEB 2018 | DOI: 10.1002/smll.201704013

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    Hybrid devices based on solution-processed colloidal gold nanorods and a thermistor are fabricated to harvest the plasmonic-induced photothermal effect for photodetection. Clear photoresponse is observed in these devices in the short-wave IR wavelength window from 1.0 to 1.8 µm.

  3. Fast Postmoisture Treatment of Luminescent Perovskite Films for Efficient Light-Emitting Diodes

    Haoran Wang, Xiaomin Li, Mingjian Yuan and Xuyong Yang

    Version of Record online: 23 FEB 2018 | DOI: 10.1002/smll.201703410

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    The effects of postmoisture on the luminescent properties of perovskite films are systematically investigated. With the optimized moisture-treated perovskite films, the high-performance perovskite light-emitting devices (LEDs) are fabricated with a maximum current efficiency of 20.4 cd A−1; an almost 20-fold enhancement compared with the control device. The results will aid in the development of efficient perovskite-based LEDs.

  4. A Room-Temperature Postsynthetic Ligand Exchange Strategy to Construct Mesoporous Fe-Doped CoP Hollow Triangle Plate Arrays for Efficient Electrocatalytic Water Splitting

    Enlai Hu, Jiqiang Ning, Dian Zhao, Chunyang Xu, Yingying Lin, Yijun Zhong, Ziyang Zhang, Yongjiang Wang and Yong Hu

    Version of Record online: 23 FEB 2018 | DOI: 10.1002/smll.201704233

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    A room-temperature postsynthetic ligand exchange reaction followed by a facile phosphorization treatment is demonstrated to construct Fe-doped CoP hollow triangle plate arrays with unique mesoporous shells aiming at achieving an active, stable, and low-cost electrocatalyst toward overall water splitting.

  5. Thermoelectric Effects of Nanogaps between Two Tips

    Hao-Ting Huang, Guan-You Ho and Zung-Hang Wei

    Version of Record online: 23 FEB 2018 | DOI: 10.1002/smll.201703695

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    A narrow gap between the tips generates stronger thermoelectric effects because the phonon's contribution to thermal conductivity can be virtually neglected. Furthermore, adding nanoparticles to the nanogap facilitates the thermionic emission electrons hopping from the hot end to the cold end, thereby intensifying the thermoelectric effects of the nanogap.