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Recently Published Articles

  1. Synthesis of Silica Vesicles with Controlled Entrance Size for High Loading, Sustained Release, and Cellular Delivery of Therapeutical Proteins

    Jun Zhang, Surajit Karmakar, Meihua Yu, Neena Mitter, Jin Zou and Chengzhong Yu

    Article first published online: 24 JUL 2014 | DOI: 10.1002/smll.201401538

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    Silica vesicles with an optimal entrance size demonstrate high loading capacity, sustained release and superior delivery efficiency of therapeutical proteins into cells to induce significant cell inhibition, which are promising nano-carriers for efficient intracellular delivery of therapeutic proteins for biological and medical applications.

  2. Scalable High-fidelity Growth of Semiconductor Nanorod Arrays with Controlled Geometry for Photovoltaic Devices Using Block Copolymers

    Candice I. Pelligra, Su Huang, Jonathan P. Singer, Anthony T. Mayo, Richard R. Mu and Chinedum O. Osuji

    Article first published online: 24 JUL 2014 | DOI: 10.1002/smll.201400956

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    Controlled density semiconducting oxide arrays are highly desirable for matching nanometer length scales specific to emerging applications. This work demonstrates a facile one-step method for templating hydrothermal growth which provides arrays with high-fidelity tuning of nanorod spacing and diameter. This solution-based method leverages the selective swelling of block copolymer micelle templates, which can be rationally designed by tuning molecular weight and volume fraction.

  3. Self-Assembly of Ferromagnetic Organic–Inorganic Perovskite-Like Films

    Naureen Akhtar, Alexey O. Polyakov, Aisha Aqeel, Pavlo Gordiichuk, Graeme R. Blake, Jacob Baas, Heinz Amenitsch, Andreas Herrmann, Petra Rudolf and Thomas T. M. Palstra

    Article first published online: 24 JUL 2014 | DOI: 10.1002/smll.201400259

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    The Langmuir-Blodgett technique is used for the layer-by-layer deposition of ferromagnetic organic–inorganic hybrids consisting of alternating CuCl4 octahedra and organic layers. This technique provides intrinsic control over the molecular organization and film thickness down to the molecular level. Magnetic characterization reveals that the coercive field for these thin films is larger than that for analogous solution-grown layered bulk crystals.

  4. Near-Infrared Light Responsive Multi-Compartmental Hydrogel Particles Synthesized Through Droplets Assembly Induced by Superhydrophobic Surface

    Rongcong Luo, Ye Cao, Peng Shi and Chia-Hung Chen

    Article first published online: 24 JUL 2014 | DOI: 10.1002/smll.201401312

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    Light responsive multi-compartmental agarose/alginate double network hydrogel particles composited with polypyrrole (PPy) nanoparticles are formed on superhydrophobic surface. The agarose/PPy hydrogel network imparts the particles with light responsive ability via the sol–gel transition process, whereas the non-thermal-responsive alginate network maintains the mechanical properties and morphology of the particles during laser irradiation.

  5. Hepatic Differentiation of Human Embryonic Stem Cells as Microscaled Multilayered Colonies Leading to Enhanced Homogeneity and Maturation

    Rui Yao, Jingyu Wang, Xiaokang Li, Jung Da, Hao Qi, Keh Kooi Kee and Yanan Du

    Article first published online: 24 JUL 2014 | DOI: 10.1002/smll.201401040

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    3D hepatic differentiation of pluripotent human embryonic stem cells in multilayered microtissue format is achieved within a versatile and off-the-shelf micro-stencil array. Compared with 2D format, cells in the micro-scaled platform show more homogenous morphology, maturer hepatic induction, and enhanced hepatic functions, indicating a versatile methodology for the derivation of human hepatocytes with mature phenotype and a potential cell source for hepatocyte-based applications.