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Recently Published Articles

  1. Tuning Polymeric Amphiphilicity via Se–N Interactions: Towards One-Step Double Emulsion for Highly Selective Enzyme Mimics

    Xiaopeng Huang, Ruochen Fang, Dingguan Wang, Jian Wang, Huaping Xu, Yapei Wang and Xi Zhang

    Article first published online: 26 NOV 2014 | DOI: 10.1002/smll.201402271

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    A selenium-containing small molecule is exploited to controllably tune the polymer amphiphilicity, leading to fabrication of appropriate polymer surfactants through which one-step double emulsions can be obtained in a facile, scalable, surfactant-free approach. After solvent evaporation, these resulting porous microparticles are shown to be the exceptional artificial GPx enzyme mimics.

  2. Doping Modulated Carbon Nanotube Synapstors for a Spike Neuromorphic Module

    Alex Ming Shen, Kyunghyun Kim, Andrew Tudor, Dongwon Lee and Yong Chen

    Article first published online: 25 NOV 2014 | DOI: 10.1002/smll.201402528

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    A synapstor with a carbon nanotube (CNT) transistor structure is fabricated and integrated with a Si “soma” circuit to emulate the spike analog signal processing, memory, and plasticity of a neural network. The doping profile in the CNT channel is modulated to reduce its power consumption and establish postsynaptic current and plasticity in the synapstor.

  3. Surface Adhesive Forces: A Metric Describing the Drag-Reducing Effects of Superhydrophobic Coatings

    Mengjiao Cheng, Mengmeng Song, Hongyu Dong and Feng Shi

    Article first published online: 22 NOV 2014 | DOI: 10.1002/smll.201402618

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    Nanomaterials with superhydrophobic properties are promising as drag-reducing coatings. However, debates regarding whether superhydrophobic surfaces are favorable for drag reduction require further clarification. A quantified water adhesive force measurement is proposed as a metric and its effectiveness demonstrated using three typical superhydrophobic coatings on model ships with in situ sailing tests.

  4. High-Performance Hybrid Complementary Logic Inverter through Monolithic Integration of a MEMS Switch and an Oxide TFT

    Yong-Ha Song, Sang-Joon Kenny Ahn, Min-Wu Kim, Jeong-Oen Lee, Chi-Sun Hwang, Jae-Eun Pi, Seung-Deok Ko, Kwang-Wook Choi, Sang-Hee Ko Park and Jun-Bo Yoon

    Article first published online: 22 NOV 2014 | DOI: 10.1002/smll.201402841

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    A hybrid complementary logic inverter consisting of a microelectromechanical system switch as a promising alternative for the p-type oxide thin film transistor (TFT) and an n-type oxide TFT is presented for ultralow power integrated circuits. These heterogeneous microdevices are monolithically integrated. The resulting logic device shows a distinctive voltage transfer characteristic curve, very low static leakage, zero-short circuit current, and exceedingly high voltage gain.

  5. Superparamagnetic Iron Oxide Nanoparticle Micelles Stabilized by Recombinant Oleosin for Targeted Magnetic Resonance Imaging

    Kevin B. Vargo, Ajlan Al Zaki, Robert Warden-Rothman, Andrew Tsourkas and Daniel A. Hammer

    Article first published online: 22 NOV 2014 | DOI: 10.1002/smll.201402017

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    Recombinant surfactants present a new platform for stabilizing and targeting nanoparticle imaging agents. Superparamagnetic iron oxide nanoparticle-loaded micelles for MRI contrast are stabilized by an engineered variant of the naturally occurring protein oleosin and targeted using a Her2/neu affibody-oleosin fusion. The recombinant oleosin platform allows simple targeting and the ability to easily swap the ligand for numerous targets.