Nature Materials contents: January 2020 Volume 19 Number 1

[Nature Materials]( [] Advertisement Give your paper to us and we'll give back to science Applied Physics Reviews (APR) has an Impact Factor of 12.750 and publishes original research and reviews. As a society publisher, we support the scientific and educational programs of the American Institute of Physics. Invest in the future of physical science research with APR. [Read the latest original research articles]( [Applied Physics Reviews]( TABLE OF CONTENTS --------------------------------------------------------------- January 2020 Volume 19, Issue 1 [Current issue]( [Editorial](#_19_1-1) [News & Views](#_19_1-2) [Review Articles](#_19_1-3) [Articles](#_19_1-4) [Amendments & Corrections](#_19_1-5) [Why it Matters](#_19_1-6) Advertisement [Invite to participate in ANM2020]( from July 15-17, 2020 at Aveiro, Portugal. Conference highlights include: Nanomaterials Graphene Materials Hydrogen Energy Magnetic and Spintronics Materials Polymer Materials and Nanocomposites Organic Light Emitting Diodes (OLED) Solar Energy Materials [ANM 2020 17-19 July]( Advertisement Nature Communications Editors’ Highlights: Inorganic, Nanoscale and Physical Chemistry Each month our editors select a small number of articles recently published in Nature Communications that they believe are particularly interesting or important in the field of inorganic, nanoscale and physical chemistry. [Browse Editors’ Highlights >>]( [Nature Communications]( Advertisement [Materials science]( This supplement explores the materials that will give rise to the new industries of the future. It highlights the intriguing field of energy harvesting and profiles the early career stars who are expanding the physical world through new materials discoveries. [Access now >>]( [Nature Index]( [] Editorial [ ] [Data take centre stage p1]( doi:10.1038/s41563-019-0574-2 [] News & Views [ ] [Mesoscale metamorphosis pp2 - 3]( Tobias Hanrath doi:10.1038/s41563-019-0515-0 [ ] [Materials modulate immunity and gut microbiome pp3 - 4]( Ankur Singh doi:10.1038/s41563-019-0557-3 [ ] [Torn between two sites pp5 - 6]( Baira Donoeva & Krijn P. de Jong doi:10.1038/s41563-019-0568-0 [ ] [Electroshock tuning of photonic crystals pp6 - 7]( Slobodan Žumer doi:10.1038/s41563-019-0569-z [ ] [To buckle or not to buckle pp8 - 9]( Ulrich S. Schwarz doi:10.1038/s41563-019-0543-9 [ ] [Electrocalorics hit the top pp9 - 11]( M. Otoničar & B. Dkhil doi:10.1038/s41563-019-0522-1 [ ] [Magnetic molecules p11]( Philip Ball doi:10.1038/s41563-019-0570-6 [] Review Articles [ ] [Organic mixed ionic–electronic conductors pp13 - 26]( Bryan D. Paulsen, Klas Tybrandt, Eleni Stavrinidou & Jonathan Rivnay doi:10.1038/s41563-019-0435-z From optoelectronic to biomedical and energy storage applications, the interest in organic mixed ionic–electronic conductors is expanding. This Review describes current understanding of the processes occurring in these materials and their structure–property relations. [] Articles [ ] [Directional massless Dirac fermions in a layered van der Waals material with one-dimensional long-range order pp27 - 33]( T. Y. Yang, Q. Wan, D. Y. Yan, Z. Zhu, Z. W. Wang et al. doi:10.1038/s41563-019-0494-1 A one-dimensional Dirac-like band is observed in a layer van der Waals material, expanding the arsenal of 2D systems. [ ] [Room-temperature stabilization of antiferromagnetic skyrmions in synthetic antiferromagnets pp34 - 42]( William Legrand, Davide Maccariello, Fernando Ajejas, Sophie Collin, Aymeric Vecchiola et al. doi:10.1038/s41563-019-0468-3 Antiferromagnetic skyrmions—which have distinct advantages over skyrmions found in other magnetic systems—are observed at room temperature in synthetic antiferromagnets. These results hold promise for low-power spintronic devices. [ ] [Tunable quadruple-well ferroelectric van der Waals crystals pp43 - 48]( John A. Brehm, Sabine M. Neumayer, Lei Tao, Andrew O’Hara, Marius Chyasnavichus et al. doi:10.1038/s41563-019-0532-z The atomic displacements that generate ferroelectricity in materials commonly fit a double-well potential energy surface. Here, ferroelectricity in two-dimensional CuInP2S6 is shown to fit a quadruple well due to the van der Waals gap between layers of this material. [ ] [Collective topo-epitaxy in the self-assembly of a 3D quantum dot superlattice pp49 - 55]( Alex Abelson, Caroline Qian, Trenton Salk, Zhongyue Luan, Kan Fu et al. doi:10.1038/s41563-019-0485-2 A structural investigation on the formation of 3D superlattices of colloidal PbSe quantum dots reveals a topotactic transition from the self-assembled phase of ligand-capped quantum dots to the epitaxially fused phase typical of conductive solids. [ ] [Imaging material functionality through three-dimensional nanoscale tracking of energy flow pp56 - 62]( Milan Delor, Hannah L. Weaver, QinQin Yu & Naomi S. Ginsberg doi:10.1038/s41563-019-0498-x A stroboscopic scattering microscopy approach is developed to image the evolution of carrier distributions in three dimensions and with sub-nanosecond resolution while the carriers propagate in organic and inorganic films. [ ] [Reciprocal space imaging of ionic correlations in intercalation compounds pp63 - 68]( Matthew J. Krogstad, Stephan Rosenkranz, Justin M. Wozniak, Guy Jennings, Jacob P. C. Ruff et al. doi:10.1038/s41563-019-0500-7 Conventional diffraction cannot determine short-range order at concentrations that disrupt ionic mobility. Real-space transforms of single-crystal diffuse scattering now allow us to measure ionic correlation length scales in sodium-intercalated V2O5. [ ] [Nanoscale semiconductor/catalyst interfaces in photoelectrochemistry pp69 - 76]( Forrest A. L. Laskowski, Sebastian Z. Oener, Michael R. Nellist, Adrian M. Gordon, David C. Bain et al. doi:10.1038/s41563-019-0488-z Although nanocatalysts forming selective contacts are crucial in photoelectrochemistry, the underlying nanoscale interfaces are poorly understood. Using a n-Si/Ni photoanode and potential-sensing AFM, interfacial electron-transfer processes and photovoltage are measured. [ ] [Ionomer distribution control in porous carbon-supported catalyst layers for high-power and low Pt-loaded proton exchange membrane fuel cells pp77 - 85]( Sebastian Ott, Alin Orfanidi, Henrike Schmies, Björn Anke, Hong Nhan Nong et al. doi:10.1038/s41563-019-0487-0 Reducing Pt content in cathodes for proton exchange membrane fuel cells is crucial to lower costs but results in high voltage losses. A Pt catalyst/support design that substantially reduces local oxygen-related mass transport resistance is reported. [ ] [Quantitative production of butenes from biomass-derived γ-valerolactone catalysed by hetero-atomic MFI zeolite pp86 - 93]( Longfei Lin, Alena M. Sheveleva, Ivan da Silva, Christopher M. A. Parlett, Zhimou Tang et al. doi:10.1038/s41563-019-0562-6 Production of olefins from biomass-derived γ-valerolactone could lead to sustainable chemical processes, but catalysts suffer from deactivation due to water. Here, a MFI-type zeolite doped with Nb(v) and Al(iii) shows >99% yield at 320 °C and catalyst stability over 180 hours. [ ] [Reconfiguration of three-dimensional liquid-crystalline photonic crystals by electrostriction pp94 - 101]( Duan-Yi Guo, Chun-Wei Chen, Cheng-Chang Li, Hung-Chang Jau, Keng-Hsien Lin et al. doi:10.1038/s41563-019-0512-3 Repetitive electrical pulse stimulation of blue-phase liquid crystals promotes their reconfiguration into stable non-cubic structures with promising electro-optical responses for display technologies. [ ] [Thermoplastic moulding of regenerated silk pp102 - 108]( Chengchen Guo, Chunmei Li, Hiep V. Vu, Philip Hanna, Aron Lechtig et al. doi:10.1038/s41563-019-0560-8 Biocompatible and degradable silk materials with programmable mechanical properties can be directly obtained from regenerated amorphous silk using thermal moulding. [ ] [Actomyosin controls planarity and folding of epithelia in response to compression pp109 - 117]( Tom P. J. Wyatt, Jonathan Fouchard, Ana Lisica, Nargess Khalilgharibi, Buzz Baum et al. doi:10.1038/s41563-019-0461-x Epithelial tissues behave as pre-tensed viscoelastic sheets that can buffer against compression and rapidly recover from buckling. Epithelial mechanical properties define a tissue-intrinsic buckling threshold that dictates the compressive strain above which tissue folds become permanent. [ ] [Hyaluronic acid–bilirubin nanomedicine for targeted modulation of dysregulated intestinal barrier, microbiome and immune responses in colitis pp118 - 126]( Yonghyun Lee, Kohei Sugihara, Merritt G. Gillilland III, Sangyong Jon, Nobuhiko Kamada et al. doi:10.1038/s41563-019-0462-9 Imbalance of the gut microbiome has been implicated in numerous human diseases. Nanoparticles have now been designed to target colitis by modulating the gut microbiome, local innate immune response and restoration of the intestinal barrier function. [] Amendments & Corrections [ ] [Author Correction: Gate controlling of quantum interference and direct observation of anti-resonances in single molecule charge transport p127]( Yueqi Li, Marius Buerkle, Guangfeng Li, Ali Rostamian, Hui Wang et al. doi:10.1038/s41563-019-0552-8 [] Why it Matters [ ] [Let go of your data p128]( Natasha Noy & Aleksandr Noy doi:10.1038/s41563-019-0539-5 Advertisement Nature Communications: Editors’ Highlights in Energy Materials Each month our editors select a small number of articles recently published in Nature Communications that they believe are particularly interesting or important in the field of energy materials. Explore research covering batteries, electrocatalysis, solid-state ionics and much more. [Browse the latest Editors’ Highlights >>]( [Nature Communications]( [nature events]( Natureevents is a fully searchable, multi-disciplinary database designed to maximise exposure for events organisers. 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