Nature Materials contents: December 2016 Volume 15 Number 12 pp 1223 - 1306

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Advertisement Nature Outlook: Science-led Economies This Nature Outlook will explore the elements that make up a strong science-led economy, the role research funding policy has to play, and how the diverse needs of research economies around the globe may be met. Access the Outlook free online for six months>   TABLE OF CONTENTS December 2016 Volume 15, Issue 12 Editorial News and Views Letters Articles Advertisement   Ready to see a glimpse of tomorrow? Visit KAUST Discovery today  KAUST Discovery highlights the cutting-edge research, technologies and innovations emerging from the King Abdullah University of Science and Technology. From biotechnology, to solar, to materials and marine science: KAUST is working on it. Subscribe   Facebook   RSS   Recommend to library   Twitter   Advertisement Revealing the Dark Universe  It's a sobering thought: all the matter that has ever been detected accounts for a mere 4.9% of the Universe. Most of the cosmos is the dark universe, a mix of dark matter and dark energy. Both have so far proved impenetrable puzzles, but physicists young and old are intent on changing that.  Access the FREE Outlook for six months.   Advertisement npj 2D Materials and Applications is an online-only, open access journal that aims to become a top-tier interdisciplinary platform for scientists to share research on 2D materials and their applications. Part of the Nature Partner Journals series, npj 2D Materials and Applications is published in partnership with FCT NOVA, Lisbon, with the support of the European Materials Research Society (E-MRS). The journal is now open for submissions.  Find out more >>>    Editorial Top Suprapowered nanomachines   p1223 doi:10.1038/nmat4820 The 2016 Nobel Prize in Chemistry celebrates the development of molecular machinery and highlights the importance of fundamental and curiosity-driven research for furthering science. News and Views Top Oxide interfaces: Spin-to-charge current conversion   pp1224 - 1225 Sergio Caprara doi:10.1038/nmat4806 Oxide interfaces with tunable spin–orbit coupling provide an ideal environment to achieve highly efficient conversion of spin currents into charge currents. See also: Article by Lesne et al. Nanocrystal superlattices: The pathway to atomic alignment   pp1225 - 1226 Yugang Zhang and Oleg Gang doi:10.1038/nmat4773 Two independent studies provide insight on the formation of nanocrystal superlattices and their atomic alignment using real-time in situ X-ray scattering techniques. See also: Letter by Geuchies et al. Material Witness: A jammy guess?   p1227 Philip Ball doi:10.1038/nmat4817 Cell mechanotransduction: Stretch to express   pp1227 - 1229 Tyler J. Kirby and Jan Lammerding doi:10.1038/nmat4809 Forces applied to the cell surface induce stretching of the chromatin in the nucleus and a rapid increase in gene expression. See also: Article by Tajik et al. Metamaterials: Prime time   pp1229 - 1231 Andrea Alù doi:10.1038/nmat4814 In the past decade, artificial materials with unusual wave interactions have significantly evolved and matured. In honour of the tenth anniversary of the premiere metamaterials conference, we look at the directions in which this field is evolving, and its impact on technology. Magnetic skyrmions: Particles or waves   pp1231 - 1232 Achim Rosch doi:10.1038/nmat4774 A first-order phase transition between two crystalline phases of magnetic whirls sheds light on the role of topology in magnetic transitions. See also: Letter by Karube et al. Nature Materials JOBS of the week Scientific Advisor (Materials Science / Nanotechnology) Springer Excellent scholars, East China University of Science and Technology (ECUST) East China University of Science and Technology (ECUST) Postdoctoral Researcher National University of Singapore (NUS) Postdoctoral Research Fellow University of Exeter Faculty Position in Materials Science & Engineering Cornell University More Science jobs from Nature Materials EVENT ANM2017: 2nd International conference on Advanced magnetic and spintronics materials 19.07.17 Aveiro, Portugal More science events from Letters Top Enhanced superconductivity in surface-electron-doped iron pnictide Ba(Fe1.94Co0.06)2As2   pp1233 - 1236 W. S. Kyung, S. S. Huh, Y. Y. Koh, K.-Y. Choi, M. Nakajima et al. doi:10.1038/nmat4728 Angle-resolved photoemission spectroscopy shows that the superconducting critical temperature in optimally doped iron pnictide Ba(Fe1-xCox)2As2 can be enhanced upon Na/K surface doping. Robust metastable skyrmions and their triangular–square lattice structural transition in a high-temperature chiral magnet   pp1237 - 1242 K. Karube, J. S. White, N. Reynolds, J. L. Gavilano, H. Oike et al. doi:10.1038/nmat4752 A room-temperature metastable skyrmion phase, which undergoes reversible transitions between a triangular and square lattice upon varying the temperature and magnetic field, is found in β-Mn-type Co8Zn8Mn4. See also: News and Views by Rosch Surface phononic graphene   pp1243 - 1247 Si-Yuan Yu, Xiao-Chen Sun, Xu Ni, Qing Wang, Xue-Jun Yan et al. doi:10.1038/nmat4743 An artificial phononic graphene for surface acoustic waves on a LiNbO3 integrated platform allows for the experimental demonstration of pseudo-diffusion transport and a temporal beating effect similar to the 'Zitterbewegung' phenomenon. In situ study of the formation mechanism of two-dimensional superlattices from PbSe nanocrystals   pp1248 - 1254 Jaco J. Geuchies, Carlo van Overbeek, Wiel H. Evers, Bart Goris, Annick de Backer et al. doi:10.1038/nmat4746 A real-time study of the growth of two-dimensional nanocrystal superlattices with square periodicity shows the formation mechanism leading to the oriented attachment of the nanocrystals. See also: News and Views by Zhang & Gang Synthesis of freestanding single-crystal perovskite films and heterostructures by etching of sacrificial water-soluble layers   pp1255 - 1260 Di Lu, David J. Baek, Seung Sae Hong, Lena F. Kourkoutis, Yasuyuki Hikita et al. doi:10.1038/nmat4749 The use of a sacrificial layer of water-soluble Sr3Al2O6 allows the release of freestanding 2D heterostructures and superlattices of epitaxially grown perovskite oxides while preserving their structural and physical properties. Advertisement npj Clean Water: open for submissions An open access, online-only journal, dedicated to publishing high-quality papers that describe the significant and cutting-edge research that continues to ensure the supply of clean water to populations. Explore the benefits of submitting your next manuscript.   Articles Top Highly efficient and tunable spin-to-charge conversion through Rashba coupling at oxide interfaces   pp1261 - 1266 E. Lesne, Yu Fu, S. Oyarzun, J. C. Rojas-Sánchez, D. C. Vaz et al. doi:10.1038/nmat4726 The Rashba effect at the LaAlO3/SrTiO3 interface is shown to enable large and gate-tunable spin-to-charge conversion through the inverse Rashba–Edelstein effect.The spin current is injected, through spin pumping, from a NiFe film. See also: News and Views by Caprara Linear topology in amorphous metal oxide electrochromic networks obtained via low-temperature solution processing   pp1267 - 1273 Anna Llordés, Yang Wang, Alejandro Fernandez-Martinez, Penghao Xiao, Tom Lee et al. doi:10.1038/nmat4734 Electrochromic films based on tin-doped indium oxide nanocrystals dispersed in a niobium oxide glass are now realized from solution at room temperature. The chain-like topology of niobium oxide improves the electrochemical properties of these films. Intrusion rheology in grains and other flowable materials   pp1274 - 1279 Hesam Askari and Ken Kamrin doi:10.1038/nmat4727 Experiments and simulations show that resistive forces on surfaces moving through granular matter or cohesive media arise as a consequence of local frictional yielding. Melt-driven mechanochemical phase transformations in moderately exothermic powder mixtures   pp1280 - 1286 Samuel A. Humphry-Baker, Sebastiano Garroni, Francesco Delogu and Christopher A. Schuh doi:10.1038/nmat4732 Mechanochemical reactions between solid phases can be triggered by localized melting caused by deformation-induced heating. Transcription upregulation via force-induced direct stretching of chromatin   pp1287 - 1296 Arash Tajik, Yuejin Zhang, Fuxiang Wei, Jian Sun, Qiong Jia et al. doi:10.1038/nmat4729 Local surface forces of physiological magnitudes can directly stretch chromatin and induce transcription upregulation in a living cell. See also: News and Views by Kirby & Lammerding N-cadherin adhesive interactions modulate matrix mechanosensing and fate commitment of mesenchymal stem cells   pp1297 - 1306 Brian D. Cosgrove, Keeley L. Mui, Tristan P. Driscoll, Steven R. Caliari, Kush D. Mehta et al. doi:10.1038/nmat4725 N-cadherin can alter how the stiffening extracellular microenvironment is interpreted by mesenchymal stem cells, leading to subsequent changes in downstream cell proliferation and differentiation. 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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