Nature Communications - 24 January 2012

Weekly Content Alert 24 January 2012 Featured image: Thomas et al. count low numbers of photons in light pulses by dividing up the area of an avalanche photodiode. Latest content: Articles Journal homepage Recommend to library Web feed   Advertisement Nature Reviews Immunology Focus on Monocytes & macrophages FREE online access is available until the end of November. Read articles from Peter Murray & Tom Wynn, Miriam Merad, Chris Glass, Eric Pamer, Ajay Chawla, Toby Lawrence & Gioacchino Natoli www.nature.com/nri/focus/macrophages       Latest Articles View all Articles     Near room-temperature synthesis of transfer-free graphene films Jinsung Kwak, Jae Hwan Chu, Jae-Kyung Choi, Soon-Dong Park, Heungseok Go, Sung Youb Kim, Kibog Park, Sung-Dae Kim, Young-Woon Kim, Euijoon Yoon, Suneel Kodambaka and Soon-Yong Kwon Current methods for fabricating graphene rely on its transfer from metal surfaces to substrates suitable for device applications. This study demonstrates a transfer-free approach for growing graphene on substrates such as thermally oxidized silicon and plastic that forms the material underneath a nickel film, at the nickel–substrate interface. 24 Jan | Nat Commun 3:645 doi:10.1038/ncomms1650 (2012) Physical sciences Applied physics  Materials science Nanotechnology Abstract | Full Text | PDF (880 kB) | Supplementary Information Practical photon number detection with electric field-modulated silicon avalanche photodiodes O. Thomas, Z.L. Yuan and A.J. Shields With ever more experiments involving ever fewer photons, there is increasing need for detectors capable of accurately resolving low numbers of photons. By modulating the electric field on a silicon avalanche diode, Thomas et al. show a high-speed device that can discriminate signals from just a few photons. 24 Jan | Nat Commun 3:644 doi:10.1038/ncomms1641 (2012) Physical sciences Applied physics  Condensed matter  Abstract | Full Text | PDF (478 kB) The genetic origin and history of speed in the Thoroughbred racehorse Mim A. Bower, Beatrice A. McGivney, Michael G. Campana, Jingjing Gu, Lisa S. Andersson, Elizabeth Barrett, Catherine R. Davis, Sofia Mikko, Frauke Stock, Valery Voronkova, Daniel G. Bradley, Alan G. Fahey, Gabriella Lindgren, David E. MacHugh, Galina Sulimova and Emmeline W. Hill A genetic variation in the horse myostatin gene is found at a very high frequency in the best Thoroughbred sprinters. This study shows, using molecular and pedigree data from modern and historic horses, that a single introduction of the variant occurred at the foundation stages of the Thoroughbred from a British native mare. 24 Jan | Nat Commun 3:643 doi:10.1038/ncomms1644 (2012) Biological sciences Evolution  Genetics  Abstract | Full Text | PDF (993 kB) | Supplementary Information Geometry analysis and systematic synthesis of highly porous isoreticular frameworks with a unique topology OPEN Yue-Biao Zhang, Hao-Long Zhou, Rui-Biao Lin, Chi Zhang, Jian-Bin Lin, Jie-Peng Zhang and Xiao-Ming Chen Zhang et al. show that simple geometry analysis can be used to predict how linker length and length ratios affect pore shape and size of porous coordination polymers. The accuracy of the predictions is confirmed by the synthesis of a series of 13 highly porous isoreticular frameworks. 24 Jan | Nat Commun 3:642 doi:10.1038/ncomms1654 (2012) Chemical sciences Inorganic chemistry  Materials science  Abstract | Full Text | PDF (1,153 kB) | Supplementary Information An exactly solvable model for the integrability–chaos transition in rough quantum billiards Maxim Olshanii, Kurt Jacobs, Marcos Rigol, Vanja Dunjko, Harry Kennard and Vladimir A. Yurovsky The dynamics of isolated quantum systems can either be strongly correlated with their initial state, or chaotic, as they relax into thermal equilibrium. Olshanii et al. present a simple, exactly solvable model that captures the transition between these two limiting cases, and suggests it may have some universal features. 24 Jan | Nat Commun 3:641 doi:10.1038/ncomms1653 (2012) Physical sciences Theoretical physics  Abstract | Full Text | PDF (531 kB) | Supplementary Information Fine structure constant and quantized optical transparency of plasmonic nanoarrays V.G. Kravets, F. Schedin and A.N. Grigorenko Under certain conditions, such as those found in low-dimensional systems, materials can show quantized behaviour based only on universal constants. Here, the relative optical transparency of gold nanopillar arrays is shown to change solely in units of the fine structure constant on adjusting array parameters. 24 Jan | Nat Commun 3:640 doi:10.1038/ncomms1649 (2012) Physical sciences Condensed matter  Nanotechnology Optical physics Abstract | Full Text | PDF (2,187 kB) | Supplementary Information Three-dimensional analysis of ribonucleoprotein complexes in influenza A virus OPEN Takeshi Noda, Yukihiko Sugita, Kazuhiro Aoyama, Ai Hirase, Eiryo Kawakami, Atsuo Miyazawa, Hiroshi Sagara and Yoshihiro Kawaoka The influenza A virus genome consists of eight RNA segments, which permits genetic reassortment and contributes to the emergence of novel strains with pandemic potential. Here, electron tomography is used to study the three-dimensional structure of ribonucleoprotein complexes within progeny virions. 24 Jan | Nat Commun 3:639 doi:10.1038/ncomms1647 (2012) Biological sciences Virology Abstract | Full Text | PDF (1,137 kB) | Supplementary Information Chemical structures of hydrazine-treated graphene oxide and generation of aromatic nitrogen doping Sungjin Park, Yichen Hu, Jin Ok Hwang, Eui-Sup Lee, Leah B. Casabianca, Weiwei Cai, Jeffrey R. Potts, Hyung-Wook Ha, Shanshan Chen, Junghoon Oh, Sang Ouk Kim, Yong-Hyun Kim, Yoshitaka Ishii and Rodney S. Ruoff Park et al. use 13C and 15N solid-state NMR and X-ray photoelectron spectroscopy to study the chemical structure of hydrazine-treated graphite oxide. Hydrazine treatment is shown to lead to the incorporation of aromatic N2 moieties at the graphene edges and restore graphitic networks on the basal planes. 24 Jan | Nat Commun 3:638 doi:10.1038/ncomms1643 (2012) Chemical sciences Materials science  Nanotechnology Physical chemistry Abstract | Full Text | PDF (876 kB) | Supplementary Information New evidence on the colour and nature of the isolated Archaeopteryx feather Ryan M. Carney, Jakob Vinther, Matthew D. Shawkey, Liliana D'Alba and Jörg Ackermann Archaeopteryx combined features of reptiles and birds, but the colour of its feathers has remained unclear. In this study, based on data from fossilized colour-imparting melanosomes, an isolated feather specimen from Archaeopteryx is predicted to be black, providing clues to its plumage colour and function. 24 Jan | Nat Commun 3:637 doi:10.1038/ncomms1642 (2012) Biological sciences Evolution  Palaeontology Abstract | Full Text | PDF (2,141 kB) | Supplementary Information Tunable Dirac cone in the topological insulator Bi2-xSbxTe3-ySey T. Arakane, T. Sato, S. Souma, K. Kosaka, K. Nakayama, M. Komatsu, T. Takahashi, Zhi Ren, Kouji Segawa and Yoichi Ando The surface electronic structure of topological insulators is characterized by a so-called Dirac cone energy dispersion. This study shows that by tuning the compositions in the compound Bi2-xSbxTe3-ySey one can control the precise features of its Dirac cone structure while keeping it a bulk insulator. 24 Jan | Nat Commun 3:636 doi:10.1038/ncomms1639 (2012) Physical sciences Condensed matter  Materials science Abstract | Full Text | PDF (1,088 kB) | Supplementary Information Atom-specific spin mapping and buried topological states in a homologous series of topological insulators Sergey V. Eremeev, Gabriel Landolt, Tatiana V. Menshchikova, Bartosz Slomski, Yury M. Koroteev, Ziya S. Aliev, Mahammad B. Babanly, Jürgen Henk, Arthur Ernst, Luc Patthey, Andreas Eich, Alexander Ako Khajetoorians, Julian Hagemeister, Oswald Pietzsch, Jens Wiebe, Roland Wiesendanger, Pedro M. Echenique, Stepan S. Tsirkin, Imamaddin R. Amiraslanov, J. Hugo Dil and Evgueni V. Chulkov Strategies to tune the surface properties of topological insulators are essential, if they are to find use in applications. Using a combination of theoretical and experimental techniques, this study examines how the properties of ordered ternary topological insulators vary with the content of group IV elements. 24 Jan | Nat Commun 3:635 doi:10.1038/ncomms1638 (2012) Physical sciences Condensed matter  Materials science Abstract | Full Text | PDF (1,506 kB) | Supplementary Information   Nature Communications JOBS of the week Postdoctoral Fellow in Epigenetics: Freiburg, Germany / Harvard University, Boston, USA University of Freiburg, Germany Senior Specialist in Metabolomics instrumental analysis. IMDEA Food Institute Postdoc in Advanced Steels for Wind Turbines Technical University of Denmark, Department of Wind Energy Postdoc position in the field of functionalized carbon nanotubes, their electronic structure and transport properties. Empa, Dübendorf/Switzerland Transmission Electron Microscope Specialist Imperial College London Physical and Macromolecular Chemistry, Polymer Self-Assembly. 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