Nature Materials contents: November 2014 Volume 13 Number 11 pp 997-1071

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Advertisement Select Si, Ge, Au and more for Advanced FIB Nanofabrication!   Visit Raith's New Website and learn more about FIB Nanofabrication and IONselect - ionLiNE's New Multi-Species Ion Beam Technology. TABLE OF CONTENTS November 2014 Volume 13, Issue 11 Editorial Research Highlights News and Views Letters Articles Subscribe   Facebook   RSS   Recommend to library   Twitter   Advertisement Nature Nanotechnology Focus: Graphene applications  Significant scientific and technological progress over the past ten years means the commercialization of products based on graphene and related two-dimensional materials is within reach in a range of areas. This focus reviews the fundamental properties of graphene that are relevant to electronic and other applications, and discusses the opportunities and challenges of commercializing graphene technologies. Selected content free online to registered users for a limited time.     Editorial Top Silence of science   p997 doi:10.1038/nmat4133 Scotland's independence debate saw too many scientists absent from the public square. Research Highlights Top Green tea therapy | Cold transport at room temperature | Cumulative-area tracking | Ultrafast plasmonic lasers | Hydrogels evolve hydrogen News and Views Top Metal nanocrystals: Deforming like liquid droplets   pp999 - 1000 Claude R. Henry doi:10.1038/nmat4124 Metallic nanocrystals can be deformed pseudoelastically at room temperature without generating dislocations. See also: Letter by Sun et al. Electron microscopy: Shape of a crystal from one image   pp1000 - 1001 Leslie J. Allen doi:10.1038/nmat4120 Aberration-corrected electron microscopes are now being exploited to achieve quantitative atomic-resolution information about surface morphology from a single image. See also: Article by Jia et al. Triplet excitons: Bringing dark states to light   pp1001 - 1003 Christopher J. Bardeen doi:10.1038/nmat4112 Semiconducting quantum dots have been used to harvest triplet excitons produced through singlet fission in organic semiconductors. These hybrid organic–inorganic materials may boost the efficiency of solar cells. See also: Article by Tabachnyk et al. | Article by Thompson et al. Material witness: Beyond the crystal   p1003 Philip Ball doi:10.1038/nmat4122 Active matter: Playful topology   pp1004 - 1005 Julia M. Yeomans doi:10.1038/nmat4123 The combination of topological constraints and deformability in an active system of microtubules and molecular motors leads to rich dynamic behaviour. Nature Materials JOBS of the week 3-year Research Chair Position in Innovative next-generation materials Universit� de Bordeaux PhD Studentship in Soft Matter-Directed Materials Assembly University College London (UCL) Faculty Position in Biomaterials Ecole Polytechnique F�d�rale de Lausanne (EPFL) Tenure-track and Tenured Faculty Positions University of Central Florida Tenure-Track Assistant Professors Princeton University More Science jobs from Nature Materials EVENT The Energy & Materials Research Conference - EMR2015 25.02.15 Madrid, Spain More science events from Letters Top Liquid-like pseudoelasticity of sub-10-nm crystalline silver particles   pp1007 - 1012 Jun Sun, Longbing He, Yu-Chieh Lo, Tao Xu, Hengchang Bi, Litao Sun, Ze Zhang, Scott X. Mao and Ju Li doi:10.1038/nmat4105 Crystalline silver nanoparticles can be deformed at room temperature and without generating dislocations through the diffusion of surface atoms, as high-resolution transmission electron microscopy and atomistic simulations show. See also: News and Views by Henry Redox shuttle mechanism enhances photocatalytic H2 generation on Ni-decorated CdS nanorods   pp1013 - 1018 Thomas Simon, Nicolas Bouchonville, Maximilian J. Berr, Aleksandar Vaneski, Asmir Adrović, David Volbers, Regina Wyrwich, Markus Döblinger, Andrei S. Susha, Andrey L. Rogach, Frank Jäckel, Jacek K. Stolarczyk and Jochen Feldmann doi:10.1038/nmat4049 Photocatalytic efficiency can be limited by slow transfer of photoexcited holes and high charge recombination rates. Using a hydroxyl anion–radical redox couple leads to enhanced photocatalytic H2 generation on Ni-decorated CdS nanorods. Articles Top Direct observation of ferroelectric field effect and vacancy-controlled screening at the BiFeO3/LaxSr1−xMnO3 interface   pp1019 - 1025 Young-Min Kim, Anna Morozovska, Eugene Eliseev, Mark P. Oxley, Rohan Mishra, Sverre M. Selbach, Tor Grande, S. T. Pantelides, Sergei V. Kalinin and Albina Y. Borisevich doi:10.1038/nmat4058 A combination of microscopy and spectroscopy techniques are used to directly observe a ferroelectric field effect and screening by oxygen vacancies at the BiFeO3/LaxSr1−xMnO3 interface. Topologically protected excitons in porphyrin thin films   pp1026 - 1032 Joel Yuen-Zhou, Semion K. Saikin, Norman Y. Yao and Alán Aspuru-Guzik doi:10.1038/nmat4073 Exciton transport in organic materials is negatively affected by molecular disorder. It is now theoretically shown that metalloporphyrin layers support topological edge states that allow exciton currents even in disordered molecular lattices. Resonant energy transfer of triplet excitons from pentacene to PbSe nanocrystals   pp1033 - 1038 Maxim Tabachnyk, Bruno Ehrler, Simon Gélinas, Marcus L. Böhm, Brian J. Walker, Kevin P. Musselman, Neil C. Greenham, Richard H. Friend and Akshay Rao doi:10.1038/nmat4093 Triplet excitons generated in a pentacene layer by singlet exciton fission are transferred to lead selenide colloidal nanocrystals with high efficiency when their energy matches the bandgap of the nanocrystals. See also: Article by Thompson et al. | News and Views by Bardeen Energy harvesting of non-emissive triplet excitons in tetracene by emissive PbS nanocrystals   pp1039 - 1043 Nicholas J. Thompson, Mark W. B. Wilson, Daniel N. Congreve, Patrick R. Brown, Jennifer M. Scherer, Thomas S. Bischof, Mengfei Wu, Nadav Geva, Matthew Welborn, Troy Van Voorhis, Vladimir Bulović, Moungi G. Bawendi and Marc A. Baldo doi:10.1038/nmat4097 Lead sulphide colloidal nanocrystals are now used to harvest non-emissive triplet excitons generated in a tetracene layer. Depending on the length of the ligands capping the nanocrystals, exciton transfer efficiency as high as 90% can be achieved. See also: Article by Tabachnyk et al. | News and Views by Bardeen Determination of the 3D shape of a nanoscale crystal with atomic resolution from a single image   pp1044 - 1049 C. L. Jia, S. B. Mi, J. Barthel, D. W. Wang, R. E. Dunin-Borkowski, K. W. Urban and A. Thust doi:10.1038/nmat4087 The three-dimensional atomic structure of a thin MgO crystal is reconstructed from one high-resolution transmission electron microscopy image. See also: News and Views by Allen Atomic structure and dynamic behaviour of truly one-dimensional ionic chains inside carbon nanotubes   pp1050 - 1054 Ryosuke Senga, Hannu-Pekka Komsa, Zheng Liu, Kaori Hirose-Takai, Arkady V. Krasheninnikov and Kazu Suenaga doi:10.1038/nmat4069 Successful synthesis of stable one-dimensional ionic crystals composed of two atomic species and encapsulated in carbon nanotubes is now demonstrated. Direct correlation of single-molecule properties with bulk mechanical performance for the biomimetic design of polymers   pp1055 - 1062 Jaeyoon Chung, Aaron M. Kushner, Adam C. Weisman and Zhibin Guan doi:10.1038/nmat4090 Single-molecule force spectroscopy is used to correlate the single-molecule nanomechanical properties of a biomimetic polymer with the bulk mechanical performance of the material by means of the derivation of the potential energy landscape. Collective and individual migration following the epithelial–mesenchymal transition   pp1063 - 1071 Ian Y. Wong, Sarah Javaid, Elisabeth A. Wong, Sinem Perk, Daniel A. Haber, Mehmet Toner and Daniel Irimia doi:10.1038/nmat4062 Malignant cells in tumours invade surrounding tissues. Single-cell-resolution measurements of the migration—through micropillar arrays—of a cell population following the epithelial-to-mesenchymal transition show intriguing emergent dynamics. Top Advertisement Nature has once again been ranked the N0.1 weekly science journal with an Impact Factor of 42.351*. Subscribe to Nature for only $42, £42 or €42. You will receive print, online and app access, providing unbelievable value for money. This is a limited time offer - so don't miss out and subscribe today! *2013 Journal Citation Reports® (Thomson Reuters, 2014)     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. 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