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Recently Published Articles

  1. Reprogrammable Assembly of Molecular Motor on Solid Surfaces via Dynamic Bonds

    Li Yu, Jian Sun, Qian Wang, Yan Guan, Le Zhou, Jingxuan Zhang, Lanying Zhang and Huai Yang

    Version of Record online: 24 APR 2017 | DOI: 10.1002/smll.201700480

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    Dynamic disulfide bonds are introduced into the chemical structure of molecular motors and the surface of solid substrates so that molecular motors can reversibly and selectively assemble on solid surfaces regardless of their chemical compositions and microstructures, while maintaining photochemistry isomerization behavior. Due to the reversible photoinduced exchange reaction, molecular motors can be reformatted and reprogramed repeatedly on solid surfaces.

  2. Selective Nucleation of GaAs on Si Nanofacets

    Ivan Prieto, Roksolana Kozak, Oliver Skibitzki, Marta D. Rossell, Thomas Schroeder, Rolf Erni and Hans von Känel

    Version of Record online: 24 APR 2017 | DOI: 10.1002/smll.201603122

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    GaAs on Si nanoheteroepitaxy based on the novel Si nanotip wafer is presented. These structures present a curved and smooth morphology here modeled as composed of {0nm}- and {nnm}-facets. The early stage of the growth reveals a preferential nucleation on the {0nm} micro and nanofacets, which may have an impact on future electronic and photonic devices.

  3. Lipid Flip-Flop and Pore Nucleation on Zwitterionic Bilayers are Asymmetric under Ionic Imbalance

    Jiaqi Lin, Roozbeh Dargazany and Alfredo Alexander-Katz

    Version of Record online: 20 APR 2017 | DOI: 10.1002/smll.201603708

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    Ionic imbalance across cell membranes affects the energy barrier of lipid flip-flop, imposing a directionality on the translocation of lipids between bilayer leaflets. The asymmetry indicates that lipid accumulates at the cytoplasmic side of cell membrane under physiological conditions. The linear reduction of the energy barrier of lipid flip-flop explains the observed increase in conductance of bilayers under external voltage.

  4. Secondary Sensitivity Control of Silver-Nanowire-Based Resistive-Type Strain Sensors by Geometric Modulation of the Elastomer Substrate

    Yunjeong Heo, Youngkyu Hwang, Hoon Sun Jung, Sung-Hoon Choa and Heung Cho Ko

    Version of Record online: 20 APR 2017 | DOI: 10.1002/smll.201700070

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    The introduction of diverse relief structures in elastomer layers induces nonuniform strain distributions and thereby different crack densities within the silver nanowire (AgNW) sensory layer upon stretching. A change in the electrical pathways in AgNWs after cracking enables the gauge factor to be systematically modulated in the desired strain range without changing the material or coating process in the sensory layer.

  5. Multichannel Porous TiO2 Hollow Nanofibers with Rich Oxygen Vacancies and High Grain Boundary Density Enabling Superior Sodium Storage Performance

    Ying Wu, Yu Jiang, Jinan Shi, Lin Gu and Yan Yu

    Version of Record online: 18 APR 2017 | DOI: 10.1002/smll.201700129

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    A 1D, multichannel, porous binary-phase anatase-TiO2–rutile-TiO2 composite with oxygen-deficient and high grain-boundary density (a-TiO2−x/r-TiO2−x) has been fabricated via electrospinning and subsequent vacuum treatment. The introduction of numerous oxygen vacancies and the high density of grain boundaries between the anatase- and rutile-phase TiO2 are favorable for enhanced electrochemical performance with excellent long cycling stability and superior rate performance.

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