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Recently Published Articles

  1. Sulfur-Modified Graphitic Carbon Nitride Nanostructures as an Efficient Electrocatalyst for Water Oxidation

    Vinayak S. Kale, Uk Sim, Jiwoong Yang, Kyoungsuk Jin, Sue In Chae, Woo Je Chang, Arun Kumar Sinha, Heonjin Ha, Chan-Cuk Hwang, Junghyun An, Hyo-Ki Hong, Zonghoon Lee, Ki Tae Nam and Taeghwan Hyeon

    Version of Record online: 20 FEB 2017 | DOI: 10.1002/smll.201603893

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    An efficient oxygen evolution reaction electrocatalyst with the lowest overpotential in carbon-based system comparable to established metal/metal oxide systems (290 mV at 10 mA cm−2, Tafel slope 120 mV dec−1) and long-term durability for 18 h (91.2% retention) is successfully realized from S-modified graphitic carbon nitride nanostructures. This electrocatalyst is achieved from melamine nanogeodes by in situ sulfur modification at high temperature.

  2. Eliminating Overerase Behavior by Designing Energy Band in High-Speed Charge-Trap Memory Based on WSe2

    Chunsen Liu, Xiao Yan, Jianlu Wang, Shijin Ding, Peng Zhou and David Wei Zhang

    Version of Record online: 20 FEB 2017 | DOI: 10.1002/smll.201604128

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    A 2D WSe2 and a semiconductor industry compatible charge-trap stack are combined to produce exceptional memory. By carefully designing the energy-band structure, the memory write time is as fast as 1 µs and an electron window of over 20 V with charge-trap selectivity of about 13 is achieved. These are state-of-the-art values never previously reported in flash memory based on atomic crystals.

  3. Phase Separation Derived Core/Shell Structured Cu11V6O26/V2O5 Microspheres: First Synthesis and Excellent Lithium-Ion Anode Performance with Outstanding Capacity Self-Restoration

    Jian Pei, Gang Chen, Qiang Zhang, Changfeng Bie and Jingxue Sun

    Version of Record online: 20 FEB 2017 | DOI: 10.1002/smll.201603140

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    Unique amorphous V2O5 coated Cu11V6O26 microspheres (Cu11V6O26/V2O5) with a 3D hierarchical architecture presents large reversible capacity, excellent rate capability, and especially outstanding self-recovery capacity as anode material for lithium-ion batteries.

  4. Mechanically Milled Irregular Zinc Nanoparticles for Printable Bioresorbable Electronics

    Bikram K. Mahajan, Xiaowei Yu, Wan Shou, Heng Pan and Xian Huang

    Version of Record online: 20 FEB 2017 | DOI: 10.1002/smll.201700065

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    An approach to obtain irregular nanocrystalline zinc particles for printable bioresorbable electronics is presented. Zn microparticles are ball milled with polyvinylpyrrolidone as a process control agent, resulting Zn nanoparticles, which can be prepared into inks that can be printed and sintered to yield conductive patterns.

  5. Controlled Segmentation of Metal Nanowire Array by Block Copolymer Lithography and Reversible Ion Loading

    Jeong Ho Mun, Seung Keun Cha, Ye Chan Kim, Taeyeong Yun, Young Joo Choi, Hyeong Min Jin, Jae Eun Lee, Hyun Uk Jeon, So Youn Kim and Sang Ouk Kim

    Version of Record online: 20 FEB 2017 | DOI: 10.1002/smll.201603939

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    Area-selective chemical segmentation of metallic nanowire arrays is prepared from block copolymer (BCP) lithography. To induce desired local chemical segmentation, reversible metal ion loading is exploited, where metal ion complexation in BCP nanodomains can be unloaded and replaced by another type of metal ion complex. The position and shape of reversible metal ion complexation can be exactly controlled by overlaid patterned masks.

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