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Recently Published Articles

  1. Conformational Change of Self-Assembled DNA Nanotubes Induced by Two-Photon Excitation

    Ziwen Dai, Dick Yan Tam, Hailiang Xu, Miu Shan Chan, Ling Sum Liu, Frédéric Bolze, Xiao Hua Sun and Pik Kwan Lo

    Article first published online: 26 MAY 2015 | DOI: 10.1002/smll.201500333

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    Two-photon-regulated, shape-changing DNA nanostructures are demonstrated by integrating a DNA nanotube with a two-photon photocleavable module that enables the opening of the cavities of tube, and becomes partially single-stranded in response to two-photon excitation under 800 nm fs laser pulses.

  2. Millisecond-Timescale Monitoring of PbS Nanoparticle Nucleation and Growth Using Droplet-Based Microfluidics

    Ioannis Lignos, Stavros Stavrakis, Ardita Kilaj and Andrew J. deMello

    Article first published online: 21 MAY 2015 | DOI: 10.1002/smll.201500119

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    A droplet-based microfluidic system with integrated absorbance and fluorescence detection is used for the online screening of nucleation and growth of lead sulfide (PbS) nanoparticles at a millisecond time scale. The novel approach reveals the fundamental mechanisms, which govern PbS quantum dot formation at high temperatures and its adoption allows for high-throughput measurements gaining mechanistic understanding of various nanoparticle syntheses.

  3. Clean WS2 and MoS2 Nanoribbons Generated by Laser-Induced Unzipping of the Nanotubes

    Kuraganti Vasu, Sharma S. R. K. C. Yamijala, Alla Zak, Kothandam Gopalakrishnan, Swapan K. Pati and C. N. R. Rao

    Article first published online: 21 MAY 2015 | DOI: 10.1002/smll.201500350

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    The preparation of 1D WS2 and MoS2 flexible nanoribbons by laser-induced unzipping of the nanotubes is reported. The nanoribbons are of high quality, uniform width, and devoid of surface contamination. The zig-zag edges in WS2 nanoribbons give rise to ferromagnetism at room temperature.

  4. You have free access to this content
    Contents: (Small 20/2015) (pages 2347–2351)

    Article first published online: 20 MAY 2015 | DOI: 10.1002/smll.201570114

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    Au Nanoarrays: Surface Plasmon-Enhanced Photodetection in Few Layer MoS2 Phototransistors with Au Nanostructure Arrays (Small 20/2015) (page 2346)

    Jinshui Miao, Weida Hu, Youliang Jing, Wenjin Luo, Lei Liao, Anlian Pan, Shiwei Wu, Jingxin Cheng, Xiaoshuang Chen and Wei Lu

    Article first published online: 20 MAY 2015 | DOI: 10.1002/smll.201570113

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    On page 2392, W. Hu, L. Liao, and co-workers report a large enhancement of the photoresponse in few-layer MoS2 phototransistors by coupling few-layer MoS2 with plasmonic nanostructures. Gold nanostructures, such as periodic nanoplates or randomly distributed nanoparticles, can excite localized surface plasmonic resonance waves under illumination, thus manipulating the direction of incident light propagation at a specific wavelength. In this manner, gold nanostructures can enhance the light-absorption efficiency as well as the photoresponsivity of MoS2 phototransistors.