Nature Materials contents: May 2018 Volume 17 Number 5 pp 371-470

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Advertisement Introducing the Solarus II - the next generation plasma tool to remove hydrocarbon contamination from TEM and SEM samples and holders. A system ideal for researchers who want to reproducibly remove organic surface contaminants in a safe, efficient manner with an integrated holder bakeout and storage. To learn more about Solarus II, click here TABLE OF CONTENTS May 2018 Volume 17, Issue 5 Editorial Comment Feature News & Views Review Articles Letters Articles   Advertisement   New Reviews Journal in Physics Launching in January 2019, Nature Reviews Physics is an online-only reviews journal that will publish high-quality technical reference, review and commentary articles in all areas of fundamental and applied physics.  FIND OUT MORE >>   Advertisement Nominations now open!  Who are the future leading women in science? The Nature Research Awards for Inspiring Science and Innovating Science are now open for nominations.  Find out more about these awards and nominate your inspiration >>  In partnership with The Estée Lauder Companies.   Editorial   Perovskites keep on giving    p371 doi:10.1038/s41563-018-0076-7 Comment   Present status and future prospects of perovskite photovoltaics    pp372 - 376 Henry J. Snaith doi:10.1038/s41563-018-0071-z Feature   Riddles in perovskite research    p377 Luigi Martiradonna doi:10.1038/s41563-018-0072-y Entropy in halide perovskites    pp377 - 379 Claudine Katan, Aditya D. Mohite & Jacky Even doi:10.1038/s41563-018-0070-0 Ferroelectric large polarons    pp379 - 381 Kiyoshi Miyata & X.-Y. Zhu doi:10.1038/s41563-018-0068-7 The influence of the Rashba effect    pp381 - 382 Samuel D. Stranks & Paulina Plochocka doi:10.1038/s41563-018-0067-8 Clues from defect photochemistry    pp383 - 384 Filippo De Angelis & Annamaria Petrozza doi:10.1038/s41563-018-0069-6 News & Views   More power to pyroelectrics    pp385 - 386 Joseph P. Feser & Jayakanth Ravichandran doi:10.1038/s41563-018-0065-x Gas vesicles as collapsible MRI contrast agents    pp386 - 387 Jeff W. M. Bulte doi:10.1038/s41563-018-0073-x Deformable inorganic semiconductor    pp388 - 389 Dae-Hyeong Kim & Gi Doo Cha doi:10.1038/s41563-018-0066-9 Light may harm or help    pp389 - 391 Jürgen Fleig & Markus Kubicek doi:10.1038/s41563-018-0052-2 At the flick of a switch    pp391 - 392 Ajit Srivastava doi:10.1038/s41563-018-0064-y Quantum power packs    p393 Philip Ball doi:10.1038/s41563-018-0074-9 Nature Materials JOBS of the week Postdoctoral Research Fellow - BME University of South Dakota Post-Doctoral Associate in Division of Engineering NYU Abu Dhabi Editor in Chief, a Cell Press journal in materials science Cell Press Research Specialist I (Lab) Princeton University Shenzhen University International Forum for Young Scientists(2017) Shenzhen University More Science jobs from Nature Materials EVENT ICMIM 2018 2nd International Conference on Materials and Intelligent Manufacturing (ICMIM 2018)--EI Compendex and Scopus 24.08.18 Sapporo, Japan More science events from Review Articles   Genesis, challenges and opportunities for colloidal lead halide perovskite nanocrystals    pp394 - 405 Quinten A. Akkerman, Gabriele Rainò, Maksym V. Kovalenko & Liberato Manna doi:10.1038/s41563-018-0018-4 Lead-halide perovskites have entered the family of colloidal nanocrystals, showing excellent optical properties and easy synthesizability. This Review provides an insight into their chemical versatility, stability challenges and use in optoelectronics.   Letters   Electric-field switching of two-dimensional van der Waals magnets    pp406 - 410 Shengwei Jiang, Jie Shan & Kin Fai Mak doi:10.1038/s41563-018-0040-6 The application of electric fields enables reversible switching of the magnetic order of CrI3 bilayers between antiferromagnetic and ferromagnetic states.   Ambipolar Landau levels and strong band-selective carrier interactions in monolayer WSe2    pp411 - 415 Martin V. Gustafsson, Matthew Yankowitz, Carlos Forsythe, Daniel Rhodes, Kenji Watanabe et al. doi:10.1038/s41563-018-0036-2 Measurements of the chemical potential in a monolayer of WSe2 using a single electron transistor sensing scheme allows for the exact mapping of the level spacing of Landau levels of monolayer WSe2 in the conductance and valence bands.   Collapse of superconductivity in cuprates via ultrafast quenching of phase coherence    pp416 - 420 F. Boschini, E. H. da Silva Neto, E. Razzoli, M. Zonno, S. Peli et al. doi:10.1038/s41563-018-0045-1 Pump–probe, time-resolved ARPES experiments with underdoped cuprates reveal the transient enhancement of the density of phase fluctuations, eventually leading to the collapse of superconductivity.   Articles   Room-temperature ductile inorganic semiconductor    pp421 - 426 Xun Shi, Hongyi Chen, Feng Hao, Ruiheng Liu, Tuo Wang et al. doi:10.1038/s41563-018-0047-z Inorganic α-Ag2S semiconductor, which has preferential slip planes in the crystal structure and irregularly distributed bonds of silver atoms preventing cleavage, demonstrates metal-like ductility at room temperature.   Electrostrain in excess of 1% in polycrystalline piezoelectrics    pp427 - 431 Bastola Narayan, Jaskaran Singh Malhotra, Rishikesh Pandey, Krishna Yaddanapudi, Pavan Nukala et al. doi:10.1038/s41563-018-0060-2 Electrostrain, an important value for actuators, larger than 1% is only achieved in single crystals. Here, a pseudo-ternary polycrystalline ferroelectric with spontaneous lattice strain has 1.3% electrostrain, which may enable cheaper piezoelectrics.   Pyroelectric energy conversion with large energy and power density in relaxor ferroelectric thin films    pp432 - 438 Shishir Pandya, Joshua Wilbur, Jieun Kim, Ran Gao, Arvind Dasgupta et al. doi:10.1038/s41563-018-0059-8 Pyroelectric energy conversion in a thin-film relaxor ferroelectric is studied under an electric field, resulting in high energy and power densities. Performance is equivalent to a ZT?=?1.16 thermoelectric, competitive for low-grade thermal harvesting.   Insight into doping efficiency of organic semiconductors from the analysis of the density of states in n-doped C60 and ZnPc    pp439 - 444 Christopher Gaul, Sebastian Hutsch, Martin Schwarze, Karl Sebastian Schellhammer, Fabio Bussolotti et al. doi:10.1038/s41563-018-0030-8 The doping efficiency of n-type molecular dopants in organic semiconductors is shown to depend on the energy difference between the electron affinity of the host and the ionization potential of the doped system.   Large tunable photoeffect on ion conduction in halide perovskites and implications for photodecomposition    pp445 - 449 Gee Yeong Kim, Alessandro Senocrate, Tae-Youl Yang, Giuliano Gregori, Michael Grätzel et al. doi:10.1038/s41563-018-0038-0 The ionic conductivity of methylammonium lead iodide is enhanced up to two orders of magnitude when the material is exposed to light. This effect may also have implications for the photostability of perovskites.   Large local lattice expansion in graphene adlayers grown on copper    pp450 - 455 Chaoyu Chen, José Avila, Hakim Arezki, Van Luan Nguyen, Jiahong Shen et al. doi:10.1038/s41563-018-0053-1 Angle-resolved photoemission spectroscopy with nanometre spatial resolution and low-energy electron microscopy/diffraction reveal that interaction with the Cu substrate can induce up to 7.5% lattice expansion in graphene adlayers.   Acoustically modulated magnetic resonance imaging of gas-filled protein nanostructures    pp456 - 463 George J. Lu, Arash Farhadi, Jerzy O. Szablowski, Audrey Lee-Gosselin, Samuel R. Barnes et al. doi:10.1038/s41563-018-0023-7 Gas-filled vesicles derived from photosynthetic microbes are shown to elicit magnetic resonance imaging contrast in vitro and in vivo with the potential for acoustically modulated multiplexing and molecular sensing.   Selective layer-free blood serum ionogram based on ion-specific interactions with a nanotransistor    pp464 - 470 R. Sivakumarasamy, R. Hartkamp, B. Siboulet, J.-F. Dufrêche, K. Nishiguchi et al. doi:10.1038/s41563-017-0016-y An ionogram based on a layer-free nanotransistor reveals the ability to selectively measure target ions in serum. Experimental and theoretical assessment of the mechanism of the surface–ion interaction is also revealed.   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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