Nature Materials contents: October 2016 Volume 15 Number 10 pp 1047-1138

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TABLE OF CONTENTS October 2016 Volume 15, Issue 10 Editorial Commentary News and Views Review Letters Articles 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> Subscribe   Facebook   RSS   Recommend to library   Twitter   Advertisement THE DEPARTMENT OF CHEMICAL & BIOLOGICAL ENGINEERING, UNIVERSITY OF WISCONSIN-MADISON invites applications for a faculty position at all professorial ranks. Applicants with a PhD in chemical or biological engineering or related fields and outstanding research accomplishments are encouraged to apply. Please see http://goo.gl/448XFS Enter 87650, 87352 or 87384 in the search field.   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 >>>   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.     Editorial Top Shiny condensates   p1047 doi:10.1038/nmat4769 Commercialization of exciton–polariton research as well as investigation of exciting physical phenomena in exciton–polariton condensates relies on improving material properties. Commentary Top Physics and applications of exciton–polariton lasers   pp1049 - 1052 Michael D. Fraser, Sven Höfling and Yoshihisa Yamamoto doi:10.1038/nmat4762 Although exciton–polariton lasers have been experimentally demonstrated in a variety of material systems, robust practical implementations are still challenging. Similarities with atomic Bose–Einstein condensates make the system suitable for chip-based quantum simulators for non-trivial many-body physics. News and Views Top Polariton condensates: Electrical spin switching   pp1053 - 1054 T. C. H. Liew doi:10.1038/nmat4723 Ultra-low-power electronic switching of stable exciton–polariton spin states has now been achieved in a semiconductor microcavity. This opens a new route to the integration of spin-based photonics and electronics. See also: Letter by Dreismann et al. Spider silk: Dynamic mechanics   pp1054 - 1055 Isabelle Su and Markus J. Buehler doi:10.1038/nmat4721 The discovery of a hypersonic bandgap in spider silk could drive the design of bio-inspired and biocompatible dynamic materials. See also: Letter by Schneider et al. Organic light-emitting diodes: High-throughput virtual screening   pp1056 - 1057 Shuzo Hirata and Katsuyuki Shizu doi:10.1038/nmat4750 Computer networks, trained with data from delayed-fluorescence materials that have been successfully used in organic light-emitting diodes, facilitate the high-speed prediction of good emitters for display and lighting applications. See also: Article by Gómez-Bombarelli et al. Active colloids: Controlled collective motions   pp1057 - 1058 Roberto Di Leonardo doi:10.1038/nmat4761 Self-propelled Janus particles with externally regulated anisotropic interactions can be made to swarm, cluster and form slithering chains. See also: Letter by Yan et al. Obituary Karl A. Gschneidner Jr (1930-2016)   p1059 Vitalij K. Pecharsky doi:10.1038/nmat4751 Material witness: Close to the edge   p1060 Philip Ball doi:10.1038/nmat4763 Nature Materials JOBS of the week Faculty Position in Inorganic Materials Ecole Polytechnique Fédérale de Lausanne (EPFL) More Science jobs from Nature Materials EVENT 4th World Congress and Expo on Nanotechnology and Materials Science 05.04.17 Barcelona, Spain More science events from Review Top The road towards polaritonic devices   pp1061 - 1073 Daniele Sanvitto and Stéphane Kéna-Cohen doi:10.1038/nmat4668 This review discusses exciton–polaritons in microcavities and their emerging technological applications, with emphasis on the materials challenges for operation at room temperature. Letters Top A sub-femtojoule electrical spin-switch based on optically trapped polariton condensates   pp1074 - 1078 Alexander Dreismann, Hamid Ohadi, Yago del Valle-Inclan Redondo, Ryan Balili, Yuri G. Rubo et al. doi:10.1038/nmat4722 The spin-switching of optically induced polariton condensates can be externally controlled with an electric field, with switching energies below 0.5 fJ. See also: News and Views by Liew Nonlinear control of high-frequency phonons in spider silk   pp1079 - 1083 Dirk Schneider, Nikolaos Gomopoulos, Cheong Y. Koh, Periklis Papadopoulos, Friedrich Kremer et al. doi:10.1038/nmat4697 Spider silk possesses a number of exemplary mechanical properties. A hypersonic phononic bandgap is now shown under dynamic loading. See also: News and Views by Su & Buehler An autonomous actuator driven by fluctuations in ambient humidity   pp1084 - 1089 Hiroki Arazoe, Daigo Miyajima, Kouki Akaike, Fumito Araoka, Emiko Sato et al. doi:10.1038/nmat4693 Films based on π-stacked carbon nitride polymers are shown to bend rapidly and jump up to 10,000 times their thickness as a result of minimal variations—induced by changes in the ambient humidity or temperature—of absorbed water. Mechanical plasticity of cells   pp1090 - 1094 Navid Bonakdar, Richard Gerum, Michael Kuhn, Marina Spörrer, Anna Lippert et al. doi:10.1038/nmat4689 Experiments and theory show that plastic energy dissipation during cell deformation is linked to elastic cytoskeletal stresses. Reconfiguring active particles by electrostatic imbalance   pp1095 - 1099 Jing Yan, Ming Han, Jie Zhang, Cong Xu, Erik Luijten et al. doi:10.1038/nmat4696 Metal–dielectric Janus colloids subjected to perpendicular a.c. electric fields can self-organize into swarms, chains, clusters and isotropic gases, depending on the frequency of the field. See also: News and Views by Di Leonardo Advertisement All content now free to access including archives! Nature Communications is an open access journal that publishes high-quality research from all areas of the natural sciences. Papers published by the journal represent important advances of significance to specialists within each subject area including chemistry. Visit the website to explore ALL the content available within your field.    Articles Top Multiscale metallic metamaterials   pp1100 - 1106 Xiaoyu Zheng, William Smith, Julie Jackson, Bryan Moran, Huachen Cui et al. doi:10.1038/nmat4694 A large-area fabrication approach to achieve three-dimensional architectured metamaterials, with structural features spanning seven orders of magnitude, results in advanced mechanical properties, including high elasticity. Facet-dependent trapping and dynamics of excess electrons at anatase TiO2 surfaces and aqueous interfaces   pp1107 - 1112 Sencer Selcuk and Annabella Selloni doi:10.1038/nmat4672 Excess electrons from intrinsic defects, dopants and photoexcitation play a key role in TiO2 properties. Simulations now predict that excess electrons depend on the exposed anatase surface, the environment and the character of the electron donor. Reversible phase modulation and hydrogen storage in multivalent VO2 epitaxial thin films   pp1113 - 1119 Hyojin Yoon, Minseok Choi, Tae-Won Lim, Hyunah Kwon, Kyuwook Ihm et al. doi:10.1038/nmat4692 It is shown that vanadium dioxide thin films can reversibly accommodate hydrogen within their lattice structures, while demonstrating an insulator–metal–insulator phase modulation with hydrogen doping. Design of efficient molecular organic light-emitting diodes by a high-throughput virtual screening and experimental approach   pp1120 - 1127 Rafael Gómez-Bombarelli, Jorge Aguilera-Iparraguirre, Timothy D. Hirzel, David Duvenaud, Dougal Maclaurin et al. doi:10.1038/nmat4717 A high-throughput virtual screening approach is used to select molecules with efficient, thermally activated delayed fluorescence. The good performance of several selected emitters in organic LED applications has also been confirmed experimentally. See also: News and Views by Hirata & Shizu Local triple-combination therapy results in tumour regression and prevents recurrence in a colon cancer model   pp1128 - 1138 João Conde, Nuria Oliva, Yi Zhang and Natalie Artzi doi:10.1038/nmat4707 A hydrogel patch delivering a combination of gene, drug and phototherapy leads to complete tumour remission and the absence of tumour recurrence in a colon cancer mouse model. Advertisement npj Regenerative Medicine is an online only, open access, peer-reviewed journal dedicated to publishing high-quality research on ways to help the human body repair, replace and regenerate damaged tissues and organs. The first articles have now been published. Read the inaugural content >>>   Top Advertisement Microsystems & Nanoengineering is a fully open access, peer-reviewed journal which publishes original articles and reviews on cutting-edge and emerging topics related to MEMS/ NEMS and nanotechnology. 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