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Recently Published Articles

  1. Arbitrary and Parallel Nanofabrication of 3D Metal Structures with Polymer Brush Resists

    Chaojian Chen, Zhuang Xie, Xiaoling Wei and Zijian Zheng

    Article first published online: 6 OCT 2015 | DOI: 10.1002/smll.201500796

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    3D polymer brushes are reported for the first time as ideal resists for the alignment-free nanofabrication of complex 3D metal structures with sub-100 nm lateral resolution and sub-10 nm vertical resolution. Since 3D polymer brushes can be serially fabricated in parallel, this method is effective to generate arbitrary 3D metal structures over a large area at a high throughput.

  2. Fabrication of 2D Heterojunction in Graphene via Low Energy N2+ Irradiation

    Alessandro Sala, Giovanni Zamborlini, Tevfik Onur Menteş and Andrea Locatelli

    Article first published online: 6 OCT 2015 | DOI: 10.1002/smll.201501473

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    Substitutional doping in graphene is locally induced with very low energy nitrogen ions. Irradiated and nonirradiated areas exhibit different charge carrier densities and are separated by a sharp boundary, stable up to 750 °C. The way towards lithographic control of the electronic properties of graphene by ion irradiation is paved, providing a proof of principle for the fabrication of 2D graphene-based heterojunctions.

  3. Hexagonal Boron Nitride–Graphene Heterostructures: Synthesis and Interfacial Properties

    Qiucheng Li, Mengxi Liu, Yanfeng Zhang and Zhongfan Liu

    Article first published online: 6 OCT 2015 | DOI: 10.1002/smll.201501766

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    In-plane and vertically stacked heterostructures of graphene and hexagonal boron nitride have attracted intense attention for energy band engineering and device performance optimization of graphene. The synthesis and interfacial properties of both in-plane (h-BN-G) and vertically stacked (G/h-BN) heterostructures, which should evoke further investigations of the related novel properties, as well as their versatile applications in various aspects, are discussed.

  4. Interparticle Forces Underlying Nanoparticle Self-Assemblies

    Dan Luo, Cong Yan and Tie Wang

    Article first published online: 5 OCT 2015 | DOI: 10.1002/smll.201501783

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    Nanoparticle self-assemblies are considered highly promising nanomaterials for future industrialization. Here, recent progress in the synthesis of nanoparticle self-assemblies with respect to interparticle forces, which determine their collective properties, is highlighted. A comprehensive perspective for the future design and fabrication of nanoparticle assemblies with excellent properties and applications is presented.

  5. Helium Ion Microscopy Visualizes Lipid Nanodomains in Mammalian Cells

    Matthias Schürmann, Natalie Frese, André Beyer, Peter Heimann, Darius Widera, Viola Mönkemöller, Thomas Huser, Barbara Kaltschmidt, Christian Kaltschmidt and Armin Gölzhäuser

    Article first published online: 5 OCT 2015 | DOI: 10.1002/smll.201501540

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    Helium ion microscopy is capable of imaging biological specimens without any conductive coating, and it allows the identification of nanodomains in the ultrastructure of membranes with 1.5 nm resolution. The shape of these nanodomains is preserved by fixation of the surrounding unsaturated fatty acids, while saturated fatty acids inside the nanodomains are selectively removed.