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Nature Materials contents: July 2017 Volume 16 Number 7 pp 691 - 781

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TABLE OF CONTENTS

July 2017 Volume 16, Issue 7

Editorial
Commentary
Features
News and Views
Letters
Articles
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Editorial

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A sustainable material world   p691
doi:10.1038/nmat4932
By considering the environmental impact of materials through their whole life cycle, materials scientists can help develop more sustainable alternatives.

Commentary

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Environmental life-cycle assessment   pp693 - 697
Randolph E. Kirchain Jr, Jeremy R. Gregory and Elsa A. Olivetti
doi:10.1038/nmat4923
Concerns about the planet's health call for a careful evaluation of the environmental impact of materials choices. Life-cycle assessment is a tool that can help identify sustainable materials pathways by considering the burdens of materials both during production and as a product.

Features

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Produce and use with care   p698
doi:10.1038/nmat4928

Towards sustainable concrete   pp698 - 699
Paulo J. M. Monteiro, Sabbie A. Miller and Arpad Horvath
doi:10.1038/nmat4930
Paulo J. M. Monteiro, Sabbie A. Miller and Arpad Horvath provide an overview of the challenges and accomplishments in reducing the environmental burden of concrete production.

Playing with defects in metals   pp700 - 701
Xiuyan Li and K. Lu
doi:10.1038/nmat4929
Xiuyan Li and K. Lu discuss a strategy, alternative to alloying, to tailor the mechanical properties of metals. By engineering defects, metals with bespoke performance might be obtained while reducing the materials' compositional complexity.

News and Views

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Topological Kondo insulators: Negative pressure tuning   pp702 - 703
Andrew P. Mackenzie and Clifford W. Hicks
doi:10.1038/nmat4925
Large tensile pressure applied to the putative topological Kondo insulator SmB6 results in an expansion of the lattice in all directions, and a huge increase in the temperature range over which surface-dominated conduction can be observed.

See also: Letter by Stern et al.

Heterogeneous catalysis: Uniformity begets selectivity   pp703 - 704
Dong Yang and Bruce C. Gates
doi:10.1038/nmat4924
A Pd4 cluster, supported by a metal–organic framework and formed by post-synthesis methods, shows high catalytic activity and selectivity for carbene-mediated reactions. This crystallographically precise material may lead to a large class of catalysts.

See also: Article by Fortea-Perez et al.

Semiconducting polymers: Probing the solid–liquid interface   pp704 - 705
Xavier Crispin and Sergei V. Kalinin
doi:10.1038/nmat4921
Exploring the minute mechanical deformations induced by electrical bias at the interface with electrolytes allows the identification of local crystallinity and distinguishing adsorption and intercalation of ions in electroactive polymers.

See also: Article by Giridharagopal et al.

Material Witness: Making anyon soup   p706
Philip Ball
doi:10.1038/nmat4933

Chalcogenide-based 2D materials: Intrinsic nanoscale patterning   pp706 - 707
Joseph W. Lyding
doi:10.1038/nmat4922
A method to realize regular patterns with nanometre precision during the synthesis of PtSe2 and CuSe monolayers has been developed.

See also: Letter by Lin et al.

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Letters

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Surface-dominated conduction up to 240K in the Kondo insulator SmB6 under strain   pp708 - 711
A. Stern, M. Dzero, V. M. Galitski, Z. Fisk and J. Xia
doi:10.1038/nmat4888
Surface-dominated conduction is found to dominate up to 240K in the strongly correlated mixed-valence Kondo insulator SmB6 under the application of large strain.

See also: News and Views by Mackenzie & Hicks

Electric field control of deterministic current-induced magnetization switching in a hybrid ferromagnetic/ferroelectric structure   pp712 - 716
Kaiming Cai, Meiyin Yang, Hailang Ju, Sumei Wang, Yang Ji, Baohe Li, Kevin William Edmonds, Yu Sheng, Bao Zhang, Nan Zhang, Shuai Liu, Houzhi Zheng and Kaiyou Wang
doi:10.1038/nmat4886
An electric field is shown to induce an in-plane effective magnetic field enabling the deterministic magnetization switching of a magnetic multilayer on a piezoelectric substrate.

Intrinsically patterned two-dimensional materials for selective adsorption of molecules and nanoclusters   pp717 - 721
X. Lin, J. C. Lu, Y. Shao, Y. Y. Zhang, X. Wu, J. B. Pan, L. Gao, S. Y. Zhu, K. Qian, Y. F. Zhang, D. L. Bao, L. F. Li, Y. Q. Wang, Z. L. Liu, J. T. Sun, T. Lei, C. Liu, J. O. Wang, K. Ibrahim, D. N. Leonard, W. Zhou, H. M. Guo, Y. L. Wang, S. X. Du, S. T. Pantelides and H.-J. Gao
doi:10.1038/nmat4915
PtSe2 and CuSe monolayers obtained by selenization of a metal substrate are shown to intrinsically form periodic patterns by varying the amount of Se atoms deposited. These patterns are used for the localized absorption of molecules and nanoclusters.

See also: News and Views by Lyding

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Articles

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Charge-transfer dynamics and nonlocal dielectric permittivity tuned with metamaterial structures as solvent analogues   pp722 - 729
Kwang Jin Lee, Yiming Xiao, Jae Heun Woo, Eunsun Kim, David Kreher, André-Jean Attias, Fabrice Mathevet, Jean-Charles Ribierre, Jeong Weon Wu and Pascal André
doi:10.1038/nmat4907
Charge-transfer dynamics in organic semiconductors are shown to be altered by multi-layered hyperbolic metamaterial substrates, an effect linked to the number of metal–dielectric pairs used.

Cast aluminium single crystals cross the threshold from bulk to size-dependent stochastic plasticity   pp730 - 736
J. Krebs, S. I. Rao, S. Verheyden, C. Miko, R. Goodall, W. A. Curtin and A. Mortensen
doi:10.1038/nmat4911
A transition in mechanical response occurs in micrometre-sized samples, but fabricating high-quality specimens in this regime is challenging. A microcasting technique now enables aluminium wires with smooth surfaces, and diameters spanning 6–100µm.

Electrochemical strain microscopy probes morphology-induced variations in ion uptake and performance in organic electrochemical transistors   pp737 - 742
R. Giridharagopal, L. Q. Flagg, J. S. Harrison, M. E. Ziffer, J. Onorato, C. K. Luscombe and D. S. Ginger
doi:10.1038/nmat4918
Electrochemical strain microscopy reveals the interconnection between ion uptake and nanoscale variations of morphology in organic semiconductor films. Such changes locally affect the operation regime of organic transistors exposed to electrolytes.

An intrinsic growth instability in isotropic materials leads to quasi-two-dimensional nanoplatelets   pp743 - 748
Andreas Riedinger, Florian D. Ott, Aniket Mule, Sergio Mazzotti, Philippe N. Knüsel, Stephan J. P. Kress, Ferry Prins, Steven C. Erwin and David J. Norris
doi:10.1038/nmat4889
Quasi-two-dimensional CdSe nanoplatelets are shown to grow in concentrated solvent-free melts, without mixed surfactants. A model explaining such results proposes that nanoscale instability triggers anisotropic growth of isotropic materials.

Dynamic chemical expansion of thin-film non-stoichiometric oxides at extreme temperatures   pp749 - 754
Jessica G. Swallow, Jae Jin Kim, John M. Maloney, Di Chen, James F. Smith, Sean R. Bishop, Harry L. Tuller and Krystyn J. Van Vliet
doi:10.1038/nmat4898
Designing stable mechanical actuators and sensors for applications in extreme environments is difficult. A high-temperature and low-voltage electromechanical oxide actuator based on PrxCe1–xO2–δ and exhibiting dynamic chemical expansion is now reported.

Electron crystallography for determining the handedness of a chiral zeolite nanocrystal   pp755 - 759
Yanhang Ma, Peter Oleynikov and Osamu Terasaki
doi:10.1038/nmat4890
By applying high-resolution transmission electron microscopy and precession electron diffraction, it is possible to image the handedness of chiral zeolite nanocrystals.

The MOF-driven synthesis of supported palladium clusters with catalytic activity for carbene-mediated chemistry   pp760 - 766
Francisco R. Fortea-Pérez, Marta Mon, Jesús Ferrando-Soria, Mercedes Boronat, Antonio Leyva-Pérez, Avelino Corma, Juan Manuel Herrera, Dmitrii Osadchii, Jorge Gascon, Donatella Armentano and Emilio Pardo
doi:10.1038/nmat4910
Mixed-valence clusters of Pd4 organized within a metal–organic framework exhibit robust catalytic capacities during carbene-mediated chemical reactions.

See also: News and Views by Yang & Gates

Tuning crystallization pathways through sequence engineering of biomimetic polymers   pp767 - 774
Xiang Ma, Shuai Zhang, Fang Jiao, Christina J. Newcomb, Yuliang Zhang, Arushi Prakash, Zhihao Liao, Marcel D. Baer, Christopher J. Mundy, James Pfaendtner, Aleksandr Noy, Chun-Long Chen and James J. De Yoreo
doi:10.1038/nmat4891
AFM measurements of peptoids assembling into sheets and networks show that the crystallization mechanism is determined by the molecular structure, where the addition of a hydrophobic segment alters the crystal formation process into a two-step pathway.

EGFR and HER2 activate rigidity sensing only on rigid matrices   pp775 - 781
Mayur Saxena, Shuaimin Liu, Bo Yang, Cynthia Hajal, Rishita Changede, Junqiang Hu, Haguy Wolfenson, James Hone and Michael P. Sheetz
doi:10.1038/nmat4893
Epidermal growth factor receptor and its isoform HER2 are recruited to nascent cellular adhesion sites and play an important role in the rigidity sensing of cells on stiff substrates, this activity being dependent on Src-mediated phosphorylation.

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