Nature Nanotechnology Contents July 2015 Volume 10 Number 7 pp565-652

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TABLE OF CONTENTS July 2015 Volume 10, Issue 7 Editorial Thesis Research Highlights News and Views Review Letters Articles In The Classroom Subscribe   Facebook   RSS   Recommend to library   Twitter   Advertisement Nature has once again been ranked as the No.1 interdisciplinary science journal with an impact factor score of 41.456*. Stay up to date with the very latest news and research in your field and subscribe for one year at our special offer price of $41, £41 or €41!   Editorial Top No walking away   p565 doi:10.1038/nnano.2015.157 Leaving the European Union could be detrimental for science and innovation in the United Kingdom. Thesis Top Quick lessons on environmental nanotech   pp566 - 567 Chris Toumey doi:10.1038/nnano.2015.144 The use of silver nanoparticles to clean clothes and the use of magnetite nanoparticles to clean water provide contrasting illustrations of the potential environmental consequences of nanotechnology, as Chris Toumey explains. Research Highlights Top Our choice from the recent literature   p568 doi:10.1038/nnano.2015.150 News and Views Top DNA nanotechnology: Measuring chloride in live cells   pp569 - 570 Masayuki Endo & Hiroshi Sugiyama doi:10.1038/nnano.2015.142 A nucleic acid-based chloride sensor is used to image and quantify spatiotemporal chloride transport in the living cell. See also: Article by Saha et al. Bioelectronics: Injection and unfolding   pp570 - 571 Dae-Hyeong Kim & Youngsik Lee doi:10.1038/nnano.2015.129 The delivery of flexible electronic scaffolds to precise locations in biological tissues or cavities is achieved by injecting them via a syringe needle with a diameter much smaller than the size of the scaffold. See also: Article by Liu et al. Complex oxide ferroelectrics: Electrostatic doping by domain walls   pp571 - 573 Petro Maksymovych doi:10.1038/nnano.2015.133 Charged domain walls in ferroelectric thin films can be manipulated at the nanoscale and used to induce charges in the surrounding insulating material. See also: Letter by Crassous et al. Spintronics: Skyrmions under strain   pp573 - 574 Robert Ritz doi:10.1038/nnano.2015.146 The high sensitivity of magnetic skyrmions to mechanical deformation of the underlying crystal lattice provides a new tuning parameter for potential applications of these nanosized spin whirls. See also: Letter by Shibata et al. Perovskite photovoltaics: Signs of stability   pp574 - 575 Karl Leo doi:10.1038/nnano.2015.139 Studies on a perovskite photovoltaic device suggest that improved stability, one of the hurdles to large-scale applicability of perovskites in solar cells, can be achieved. Nature Nanotechnology JOBS of the week Post Doc Position in Single Molecule Nanotechnology University of Notre Dame Tenure Track Faculty Position - Assistant or Associate Professor University of California (UCLA) More Science jobs from Nature Nanotechnology EVENT Applied Nanotechnology and Nanoscience International Conference 05.11.15 Paris, France More science events from Review Top Catalysis by clusters with precise numbers of atoms   pp577 - 588 Eric C. Tyo & Stefan Vajda doi:10.1038/nnano.2015.140 This article reviews recent progress in the synthesis and characterization of well-defined subnanometre clusters, and the understanding and exploitation of their catalytic properties, highlighting the potential of such clusters to provide insight into important catalytic processes and to form the basis of novel catalytic systems. Letters Top Large anisotropic deformation of skyrmions in strained crystal   pp589 - 592 K. Shibata, J. Iwasaki, N. Kanazawa, S. Aizawa, T. Tanigaki, M. Shirai, T. Nakajima, M. Kubota, M. Kawasaki, H. S. Park, D. Shindo, N. Nagaosa & Y. Tokura doi:10.1038/nnano.2015.113 Uniaxial strain as small as 0.3% in FeGe thin films can induce large anisotropic deformation of magnetic skyrmions and their crystal lattice hosted in the material. See also: News and Views by Ritz Edge-mode superconductivity in a two-dimensional topological insulator   pp593 - 597 Vlad S. Pribiag, Arjan J. A. Beukman, Fanming Qu, Maja C. Cassidy, Christophe Charpentier, Werner Wegscheider & Leo P. Kouwenhoven doi:10.1038/nnano.2015.86 Topological superconductivity, a state that can support the formation of Majorana zero modes, can be induced in the edge state of a InAs/GaSb nanowire. Nano Josephson superconducting tunnel junctions in YBa2Cu3O7–δ directly patterned with a focused helium ion beam   pp598 - 602 Shane A. Cybart, E. Y. Cho, T. J. Wong, Björn H. Wehlin, Meng K. Ma, Chuong Huynh & R. C. Dynes doi:10.1038/nnano.2015.76 High-quality superconducting tunnel junctions operating above liquid nitrogen temperatures can be fabricated with a focused beam of helium ions that directly writes tunnel barriers in a cuprate superconductor. Magnetoluminescence and valley polarized state of a two-dimensional electron gas in WS2 monolayers   pp603 - 607 T. Scrace, Y. Tsai, B. Barman, L. Schweidenback, A. Petrou, G. Kioseoglou, I. Ozfidan, M. Korkusinski & P. Hawrylak doi:10.1038/nnano.2015.78 Circularly polarized emission with no applied magnetic field can be obeserved in a two-dimensional semiconductor due to the interaction of excitons with a two-dimensional electron gas. Quantum oscillations in a two-dimensional electron gas in black phosphorus thin films   pp608 - 613 Likai Li, Guo Jun Ye, Vy Tran, Ruixiang Fei, Guorui Chen, Huichao Wang, Jian Wang, Kenji Watanabe, Takashi Taniguchi, Li Yang, Xian Hui Chen & Yuanbo Zhang doi:10.1038/nnano.2015.91 The high material quality achieved in black phosphorus thin films combined with the choice of an appropriate substrate enables the electrostatic formation of a high-mobility two-dimensional electron gas that exhibits quantum oscillations in its magnetoresistance. Polarization charge as a reconfigurable quasi-dopant in ferroelectric thin films   pp614 - 618 Arnaud Crassous, Tomas Sluka, Alexander K. Tagantsev and Nava Setter doi:10.1038/nnano.2015.114 Charged domain walls can be created and manipulated at the nanoscale so that their polarization charge can be used to dope ferroelectric thin films at selected locations in a reversible way. See also: News and Views by Maksymovych In vivo integrity of polymer-coated gold nanoparticles   pp619 - 623 Wolfgang G. Kreyling, Abuelmagd M. Abdelmonem, Zulqurnain Ali, Frauke Alves, Marianne Geiser, Nadine Haberl, Raimo Hartmann, Stephanie Hirn, Dorleta Jimenez de Aberasturi, Karsten Kantner, Gülnaz Khadem-Saba, Jose-Maria Montenegro, Joanna Rejman, Teofilo Rojo, Idoia Ruiz de Larramendi, Roser Ufartes, Alexander Wenk & Wolfgang J. Parak doi:10.1038/nnano.2015.111 The polymeric shell surrounding gold nanoparticles may degrade when injected into rats, suggesting that even highly stable colloidal nanoparticles are susceptible to physicochemical changes in vivo. Articles Top Black silicon solar cells with interdigitated back-contacts achieve 22.1% efficiency   pp624 - 628 Hele Savin, Päivikki Repo, Guillaume von Gastrow, Pablo Ortega, Eric Calle, Moises Garín & Ramon Alcubilla doi:10.1038/nnano.2015.89 A power conversion efficiency of 22% is achieved in black silicon back-contacted solar cells through passivation of the nanostructured surface by a conformal alumina layer. Syringe-injectable electronics   pp629 - 636 Jia Liu, Tian-Ming Fu, Zengguang Cheng, Guosong Hong, Tao Zhou, Lihua Jin, Madhavi Duvvuri, Zhe Jiang, Peter Kruskal, Chong Xie, Zhigang Suo, Ying Fang & Charles M. Lieber doi:10.1038/nnano.2015.115 Rolled-up ultraflexible mesh electronics can be injected through a syringe needle of diameter as small as 100  µm into man-made and biological cavities, gels and tissues, where they can unfold and perform sensing operations. See also: News and Views by Kim & Lee Prescribed nanoparticle cluster architectures and low-dimensional arrays built using octahedral DNA origami frames   pp637 - 644 Ye Tian, Tong Wang, Wenyan Liu, Huolin L. Xin, Huilin Li, Yonggang Ke, William M. Shih & Oleg Gang doi:10.1038/nnano.2015.105 Octahedral DNA origami frames that have encoded vertices capable of attaching nanoparticles can be used to form precise three-dimensional nanoparticle clusters and one- and two-dimensional nanoparticle arrays. A pH-independent DNA nanodevice for quantifying chloride transport in organelles of living cells   pp645 - 651 Sonali Saha, Ved Prakash, Saheli Halder, Kasturi Chakraborty and Yamuna Krishnan doi:10.1038/nnano.2015.130 Chloride concentrations inside subcellular organelles of living cells can now be measured in a pH-independent manner using a DNA nanodevice, offering a tool for studying chloride homeostasis and its associated diseases. See also: News and Views by Endo & Sugiyama In The Classroom Top Inspiration is all around you   p652 Giampaolo Pitruzzello doi:10.1038/nnano.2015.145 Your teachers and your colleagues have an essential role in helping you to determine your scientific interests and your way of doing research, says Giampaolo Pitruzzello. Top Natureevents is a fully searchable, multi-disciplinary database designed to maximise exposure for events organisers. The contents of the Natureevents Directory are now live. The digital version is available here. Find the latest scientific conferences, courses, meetings and symposia on natureevents.com. For event advertising opportunities across the Nature Publishing Group portfolio please contact natureevents@nature.com More Nature Events

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