Browse Articles

  • Article
    | Open Access

    Photocatalysts with broad-spectrum light activation are needed for high efficiency water splitting. Here, an upconversion process in oxygen-doped carbon nitride nanosheets contributes to enhanced photocatalytic activity under both visible and infrared light.

    • Zhengyuan Jin
    • , Xiantao Jiang
    • , Qitao Zhang
    • , Shaolong Huang
    • , Luhong Zhang
    • , Lili Huang
    • , Tingchao He
    • , Han Zhang
    • , Teruhisa Ohno
    • , Shuangchen Ruan
    •  & Yu-Jia Zeng
  • Article
    | Open Access

    Topological Weyl semimetals are promising materials for achieving large anomalous Hall and Nernst effects needed in magnetic and heat flux sensors. Here, the authors visualize the spin-polarized Weyl cone and surface states of ferromagnetic Co2MnGa films, finding a high Nernst thermopower of 6.2 μVK−1.

    • Kazuki Sumida
    • , Yuya Sakuraba
    • , Keisuke Masuda
    • , Takashi Kono
    • , Masaaki Kakoki
    • , Kazuki Goto
    • , Weinan Zhou
    • , Koji Miyamoto
    • , Yoshio Miura
    • , Taichi Okuda
    •  & Akio Kimura
  • Article
    | Open Access

    Doping organic semiconductors can substantially increase their conductivity, yet the effect on charge transport is not fully understood. Here, an approach based on percolation theory determines the activation energy of conductivity and the Seebeck energy for archetypal small molecule materials.

    • Andreas Hofacker
  • Article
    | Open Access

    Synthetic bone graft materials are needed due to aging societies. Here, biodegradable and versatile recombinant collagen polypeptide scaffolds are engineered to induce bone regeneration in pre-clinical animal models.

    • Hideo Fushimi
    • , Takahiro Hiratsuka
    • , Ai Okamura
    • , Yoshitaka Ono
    • , Izumi Ogura
    •  & Ichiro Nishimura
  • Article
    | Open Access

    Sensitive and scalable gas sensors are essential in daily life air-quality monitoring. Here, a monolithically integrated gas sensing circuit based on two-step-grown polycrystalline MoS2 films is fabricated, showing good switching and NO2 gas sensing response in a wide detection range of 1 to 256 ppm.

    • Sehwan Kim
    • , Heekyeong Park
    • , Sooho Choo
    • , Seongho Baek
    • , Yena Kwon
    • , Na Liu
    • , Jeong Yong Yang
    • , Cheol-Woong Yang
    • , Geonwook Yoo
    •  & Sunkook Kim
  • Article
    | Open Access

    Extreme deformation of alloys is important for processing and applications. Here, extreme shear deformation of an Al–Si alloy induces grain refinement, multi-scale fragmentation of lamellae and generation of various defects, enhancing the mechanical properties of micropillars.

    • Bharat Gwalani
    • , Matthew Olszta
    • , Soumya Varma
    • , Lei Li
    • , Ayoub Soulami
    • , Elizabeth Kautz
    • , Siddhartha Pathak
    • , Aashish Rohatgi
    • , Peter V. Sushko
    • , Suveen Mathaudhu
    • , Cynthia A. Powell
    •  & Arun Devaraj
  • Article
    | Open Access

    Materials with a spinel structure are used in various applications, including in the nuclear industry and as dielectrics. Here, first principle calculations and Monte Carlo simulations predict that an ordered double spinel structure is stable, supported by preliminary experimental data.

    • Ghanshyam Pilania
    • , Vancho Kocevski
    • , James A. Valdez
    • , Cortney R. Kreller
    •  & Blas P. Uberuaga
  • Article
    | Open Access

    Magnetic skyrmions are nanosized and topologically-protected objects that exhibit well-controlled motion under applied current making them prime candidates for race-track memories. The author’s study skyrmion lattice creep that is detrimental for memory applications using ultrasound spectroscopy.

    • Yongkang Luo
    • , Shi-Zeng Lin
    • , Maxime Leroux
    • , Nicholas Wakeham
    • , David M. Fobes
    • , Eric D. Bauer
    • , Jonathan B. Betts
    • , Joe D. Thompson
    • , Albert Migliori
    • , Marc Janoschek
    •  & Boris Maiorov
  • Article
    | Open Access

    Recently, Nb-doping of topological insulator Bi2Se3 has attracted much attention as a way to pursue topological superconductivity. Here, in contrast to previous reports, superconductivity in NbxBi2Se3 is found to arise from the misfit phase (BiSe)1.10NbSe2 and not from Nb intercalation into Bi2Se3.

    • Machteld E. Kamminga
    • , Maria Batuk
    • , Joke Hadermann
    •  & Simon J. Clarke
  • Article
    | Open Access

    Perovskite nanocrystals are promising for use in light emitting diodes, but improved hole injection is needed. Here, MoO3 is added as an electric dipole layer between hole injection and transport layers, achieving a current efficiency of 72.7cd/A in a green light emitting diode.

    • Xiangtian Xiao
    • , Kai Wang
    • , Taikang Ye
    • , Rui Cai
    • , Zhenwei Ren
    • , Dan Wu
    • , Xiangwei Qu
    • , Jiayun Sun
    • , Shihao Ding
    • , Xiao Wei Sun
    •  & Wallace C. H. Choy
  • Article
    | Open Access

    Knowing the atomic structure of liquid iron oxide is key to understanding steelmaking processes and magma flows. Here, Fe-O atomic coordination numbers are determined during levitation melting at a range of temperatures and oxygen partial pressures, revealing low coordination numbers.

    • Caijuan Shi
    • , Oliver L. G. Alderman
    • , Anthony Tamalonis
    • , Richard Weber
    • , Jinglin You
    •  & Chris J. Benmore
  • Article
    | Open Access

    Anion-exchange doping allows high carrier densities in organic semiconductors but can be limited by host-guest steric effects. Here, these are analyzed, and high doping efficiency is realized for a specific combination of a polymer with sparse side-chains and a large dopant, forming a close-packed structure.

    • Shinya Kohno
    • , Yu Yamashita
    • , Naotaka Kasuya
    • , Tsubasa Mikie
    • , Itaru Osaka
    • , Kazuo Takimiya
    • , Jun Takeya
    •  & Shun Watanabe
  • Article
    | Open Access

    Coupling of semiconductor quantum wells is governed by short-range interactions, and thus limited to distances of roughly 10 nm. Here, magnetically controlled energy transfer between quantum wells over a distance of 2.15 μm is achieved via polariton-mediated coupling.

    • Maciej Ściesiek
    • , Krzysztof Sawicki
    • , Wojciech Pacuski
    • , Kamil Sobczak
    • , Tomasz Kazimierczuk
    • , Andrzej Golnik
    •  & Jan Suffczyński
  • Article
    | Open Access

    The hierarchical structure of nacre is known to contribute to its high strength and toughness, providing inspiration for many biomimetic materials. Here, co-oriented 20 µm stacks of aragonite platelets are shown to contribute to the toughness of nacre, defining a new characteristic length scale.

    • Hyun-Chae Loh
    • , Thibaut Divoux
    • , Bernd Gludovatz
    • , Pupa U. P. A. Gilbert
    • , Robert O. Ritchie
    • , Franz-Josef Ulm
    •  & Admir Masic
  • Article
    | Open Access

    In nonlinear optics, efficient frequency conversion typically requires phase-matching conditions, resulting in wavelength, polarization, and angular selectivity. Here, these constraints are overcome in a supercrystal with giant refraction index, allowing wide spectral and angular acceptance.

    • Ludovica Falsi
    • , Luca Tartara
    • , Fabrizio Di Mei
    • , Mariano Flammini
    • , Jacopo Parravicini
    • , Davide Pierangeli
    • , Gianbattista Parravicini
    • , Feifei Xin
    • , Paolo DiPorto
    • , Aharon J. Agranat
    •  & Eugenio DelRe
  • Article
    | Open Access

    Multiferroics that are both ferroelectric and ferromagnetic are highly desirable for technological applications but extremely rare. Here, signatures of a ferroelectric phase transition, supported by theoretical calculations, are observed in ferromagnetic EuO under a large epitaxial strain of 6.4%.

    • Veronica Goian
    • , Rainer Held
    • , Eric Bousquet
    • , Yakun Yuan
    • , Alexander Melville
    • , Hua Zhou
    • , Venkatraman Gopalan
    • , Phillipe Ghosez
    • , Nicola A. Spaldin
    • , Darrell G. Schlom
    •  & Stanislav Kamba
  • Article
    | Open Access

    Materials with a large spin-Hall effect are highly desirable for spintronic devices. Here, non-equilibrium thin film synthesis is used to fabricate copper-iridium binary alloys beyond their solubility limit, achieving a large spin-Hall angle of approximately 6% in Cu76Ir24.

    • Hiroto Masuda
    • , Rajkumar Modak
    • , Takeshi Seki
    • , Ken-ichi Uchida
    • , Yong-Chang Lau
    • , Yuya Sakuraba
    • , Ryo Iguchi
    •  & Koki Takanashi
  • Article
    | Open Access

    The discovery of new alloys with desirable mechanical properties is traditionally a time consuming process. Here, machine learning is applied to the discovery of aluminum alloys, revealing a compositionally-lean alloy with an ultimate tensile strength of 952 MPa and 6.3% elongation.

    • Jiaheng Li
    • , Yingbo Zhang
    • , Xinyu Cao
    • , Qi Zeng
    • , Ye Zhuang
    • , Xiaoying Qian
    •  & Hui Chen
  • Article
    | Open Access

    Strong piezoelectricity is typically due to reorientation of ferroelectric domains and is not expected in cubic systems. Here, the strong piezoelectricity of pseudo-cubic 0.3BaTiO3–0.1Bi(Mg1/2Ti1/2)O3–0.6BiFeO3 is explained in terms of partial ordering of Bi ions adapted to any applied field direction.

    • Yoshihiro Kuroiwa
    • , Sangwook Kim
    • , Ichiro Fujii
    • , Shintaro Ueno
    • , Yuki Nakahira
    • , Chikako Moriyoshi
    • , Yukio Sato
    •  & Satoshi Wada
  • Article
    | Open Access

    Replacing metal electrodes in lithium-ion batteries with organic materials reduces environmental impact and might lead to high gravimetric capacity. Here, organic electrodes containing a naphthazarin-dimer skeleton achieve an initial capacity of 416 mAh g−1 and energy density of 1.1 Wh g−1 in a lithium-ion battery.

    • Masaru Yao
    • , Noboru Taguchi
    • , Hisanori Ando
    • , Nobuhiko Takeichi
    •  & Tetsu Kiyobayashi
  • Article
    | Open Access

    Atomic processes on the surface of a catalyst control reaction mechanisms. Here, in-situ imaging of manganese adatom dynamics on La0.6Sr0.4MnO3 and Pr0.67Ca0.33MnO3 surfaces used in the oxygen evolution reaction reveals the importance of partial surface solvation of active metal sites on reaction mechanism.

    • Gaurav Lole
    • , Vladimir Roddatis
    • , Ulrich Ross
    • , Marcel Risch
    • , Tobias Meyer
    • , Lukas Rump
    • , Janis Geppert
    • , Garlef Wartner
    • , Peter Blöchl
    •  & Christian Jooss
  • Article
    | Open Access

    Robotic devices that can actuate at high speeds are challenging to achieve. Here, soft robotic devices driven by low magnetic fields show large deformations at frequencies of up to 100 Hz and are capable of a range of motions, including cross-clapping, walking, swimming and closing around a living fly.

    • Xu Wang
    • , Guoyong Mao
    • , Jin Ge
    • , Michael Drack
    • , Gilbert Santiago Cañón Bermúdez
    • , Daniela Wirthl
    • , Rico Illing
    • , Tobias Kosub
    • , Lothar Bischoff
    • , Changan Wang
    • , Jürgen Fassbender
    • , Martin Kaltenbrunner
    •  & Denys Makarov
  • Article
    | Open Access

    Deep vein thrombosis is the clotting of blood in deep veins. Here, a microfluidic device containing flexible valves fabricated in-situ is used to investigate the effects of blood flow conditions and valve elasticity on thrombus formation, revealing the circumstance under which clotting occurs.

    • Zoe Schofield
    • , Hosam Alden Baksamawi
    • , Joana Campos
    • , Alessio Alexiadis
    • , Gerard B. Nash
    • , Alexander Brill
    •  & Daniele Vigolo
  • Article
    | Open Access

    Hydrophobic coatings are increasingly important in modern technology, but hard to study in the extreme non-wetting limit. Here, micropipette force sensors can directly measure nN-scale friction forces and, combined with particle image velocimetry, reveal pure rolling dynamics of slow water droplets.

    • Matilda Backholm
    • , Daniel Molpeceres
    • , Maja Vuckovac
    • , Heikki Nurmi
    • , Matti J. Hokkanen
    • , Ville Jokinen
    • , Jaakko V. I. Timonen
    •  & Robin H. A. Ras
  • Article
    | Open Access

    Intermediate band solar cells have the ability to reach efficiencies similar to multijunction cells using a single semiconductor junction. Here, enhanced two-photon carrier generation is demonstrated on a silicon substrate in an InGaN/GaN quantum dot-in-nanowire heterostructure intermediate band solar cell.

    • Ross Cheriton
    • , Sharif M. Sadaf
    • , Luc Robichaud
    • , Jacob J. Krich
    • , Zetian Mi
    •  & Karin Hinzer
  • Article
    | Open Access

    Transition metal nitride coatings exhibit high hardness, but typically lack ductility and are therefore prone to failure. Here, the effect of bilayer thickness on the mechanical properties of MoN-TaN superlattices is investigated, leading to coatings with high fracture toughness.

    • Rainer Hahn
    • , Nikola Koutná
    • , Tomasz Wójcik
    • , Anton Davydok
    • , Szilárd Kolozsvári
    • , Christina Krywka
    • , David Holec
    • , Matthias Bartosik
    •  & Paul H. Mayrhofer
  • Article
    | Open Access

    Heterostructures can reveal interesting and unexplored physics at the material interface. Here, the authors use time-resolved photoemission electron microscopy to investigate the photoexcited electron dynamics at a heterostructure interface composed of two polytypes of MoTe2.

    • Aiqin Hu
    • , Xiaolong Xu
    • , Wei Liu
    • , Shengnan Xu
    • , Zhaohang Xue
    • , Bo Han
    • , Shufeng Wang
    • , Peng Gao
    • , Quan Sun
    • , Qihuang Gong
    • , Yu Ye
    •  & Guowei Lu
  • Article
    | Open Access

    The design of advanced batteries relies on careful control of molecular interactions. Here, a protein nanopore, inserted into a lipid membrane, is shown to discern supramolecular polysulfide/cyclodextrin complexes differing by a single sulfur atom, a concept that might be used to design membrane separators in batteries.

    • Fanny Bétermier
    • , Benjamin Cressiot
    • , Giovanni Di Muccio
    • , Nathalie Jarroux
    • , Laurent Bacri
    • , Blasco Morozzo della Rocca
    • , Mauro Chinappi
    • , Juan Pelta
    •  & Jean-Marie Tarascon
  • Article
    | Open Access

    Controlling the growth processes of nanowires is vital for tailoring their properties. Here, the presence of tungstate ions on specific surface planes of zinc oxide nanowires causes nanowire growth and chemical doping along specific crystal planes.

    • Jiangyang Liu
    • , Kazuki Nagashima
    • , Hiroki Yamashita
    • , Wataru Mizukami
    • , Jun Uzuhashi
    • , Takuro Hosomi
    • , Masaki Kanai
    • , Xixi Zhao
    • , Yoshinori Miura
    • , Guozhu Zhang
    • , Tsunaki Takahashi
    • , Masaru Suzuki
    • , Daiki Sakai
    • , Benjarong Samransuksamer
    • , Yong He
    • , Tadakatsu Ohkubo
    • , Takao Yasui
    • , Yuriko Aoki
    • , Johnny C. Ho
    • , Yoshinobu Baba
    •  & Takeshi Yanagida
  • Article
    | Open Access

    The study of materials under extreme conditions can reveal interesting physics in diverse areas such as condensed matter and geophysics. Here, the authors investigate experimentally and theoretically the high pressure-high temperature phase diagram of niobium revealing a previously unobserved phase transition from body-centered cubic to orthorhombic phase.

    • Daniel Errandonea
    • , Leonid Burakovsky
    • , Dean L. Preston
    • , Simon G. MacLeod
    • , David Santamaría-Perez
    • , Shaoping Chen
    • , Hyunchae Cynn
    • , Sergey I. Simak
    • , Malcolm I. McMahon
    • , John E. Proctor
    •  & Mohamed Mezouar
  • Article
    | Open Access

    Atomically thin films are ideal candidate materials for realizing clean, long sought-after, Kitaev spin liquids. Here, a two-dimensional IrO6 honeycomb lattice is stabilized within a MnTiO3 ilmenite superlattice, inducing a suppression of antiferromagnetic order that suggests potential spin-liquid behavior.

    • Kei Miura
    • , Kohei Fujiwara
    • , Kei Nakayama
    • , Ryo Ishikawa
    • , Naoya Shibata
    •  & Atsushi Tsukazaki
  • Article
    | Open Access

    Enzymes are effective at upgrading natural materials to high-performance biomaterials. Here, an ancestral endoglucanase is used to obtain highly crystalline cellulose nanocrystals, which can act as a matrix for cell growth and be combined with graphene for conducting inks.

    • Borja Alonso-Lerma
    • , Leire Barandiaran
    • , Lorena Ugarte
    • , Izaskun Larraza
    • , Antonio Reifs
    • , Raquel Olmos-Juste
    • , Nerea Barruetabeña
    • , Iban Amenabar
    • , Rainer Hillenbrand
    • , Arantxa Eceiza
    •  & Raul Perez-Jimenez
  • Article
    | Open Access

    Surface states of topological semimetals may give rise to unusual transport properties and topological superconductivity. Here, the H-T phase diagram of AuSn4 is experimentally established, displaying 2D superconductivity, Bose metal behavior, and normal-state magnetotransport driven by surface states.

    • Dong Shen
    • , Chia Nung Kuo
    • , Tien Wei Yang
    • , I Nan Chen
    • , Chin Shan Lue
    •  & Li Min Wang
  • Article
    | Open Access

    The atomic structure of amorphous materials is sensitive to processing history. Here, the simultaneous application of temperature and pressure to a Zr50Cu40Al10 metallic glass causes nanocrystal formation and short- and medium-range ordering, and an increase in strength.

    • Yuki Shibazaki
    • , Rui Yamada
    • , Junji Saida
    • , Yoshio Kono
    • , Masato Wakeda
    • , Keiji Itoh
    • , Masahiko Nishijima
    •  & Koji Kimoto
  • Article
    | Open Access

    Antiferroelectrics are technologically important for energy conversion and storage, but are relatively scarce. Here, first-principles calculations suggest that alkali vanadates are as yet undetected antiferroelectrics, offering routes to experimentally tune and optimize their behavior.

    • Hugo Aramberri
    •  & Jorge Íñiguez
  • Article
    | Open Access

    The quantum spin Hall (QSH) phase is an important feature of two dimensional topological insulators and is typically observed at temperatures below 100 K. Here, the authors report the observation of a room temperature quantum spin Hall phase in few-atom-layer 1T′-MoS2 patterned onto the 2H semiconducting phase by low-power laser beam irradiation.

    • Naoki Katsuragawa
    • , Mizuki Nishizawa
    • , Taketomo Nakamura
    • , Taiki Inoue
    • , Sahar Pakdel
    • , Shigeo Maruyama
    • , Shingo Katsumoto
    • , Juan Jose Palacios
    •  & Junji Haruyama
  • Article
    | Open Access

    Traditionally, machine learning for materials science is based on database-specific models and is limited in the number of predictable parameters. Here, a versatile graph-based neural network can integrate multiple data sources, allowing the prediction of more than 40 parameters simultaneously.

    • Kan Hatakeyama-Sato
    •  & Kenichi Oyaizu
  • Article
    | Open Access

    Non-graphitising carbon materials typically cannot be converted to graphite without the use of metal catalysts. Here, catalyst-free, high-temperature pulsing is shown to convert polyvinylidene chloride and cellulose into highly ordered graphite.

    • Jason L. Fogg
    • , Kate J. Putman
    • , Tianyi Zhang
    • , Yu Lei
    • , Mauricio Terrones
    • , Peter J. F. Harris
    • , Nigel A. Marks
    •  & Irene Suarez-Martinez
  • Article
    | Open Access

    The polymorphism of MoTe2 can be used to realize planar metallic/semiconducting homojunctions in 2D devices, greatly reducing the contact resistance. Here, the simultaneous growth of both phases is achieved on the same substrate by single-step chemical vapor deposition and seeding layer engineering.

    • James P. Fraser
    • , Liudvika Masaityte
    • , Jingyi Zhang
    • , Stacey Laing
    • , Juan Carlos Moreno-López
    • , Adam F. McKenzie
    • , Jessica C. McGlynn
    • , Vishal Panchal
    • , Duncan Graham
    • , Olga Kazakova
    • , Thomas Pichler
    • , Donald A. MacLaren
    • , David A. J. Moran
    •  & Alexey Y. Ganin
  • Article
    | Open Access

    Magnetic short-range ordering has been observed at low temperatures as quantum phase transitions in some compounds. Here, magnetic short-range ordering is found to remain at temperatures up to 720 K in noncentrosymmetric Mn3RhSi.

    • Hiroki Yamauchi
    • , Dita Puspita Sari
    • , Isao Watanabe
    • , Yukio Yasui
    • , Lieh-Jeng Chang
    • , Keietsu Kondo
    • , Takashi U. Ito
    • , Motoyuki Ishikado
    • , Masato Hagihara
    • , Matthias D. Frontzek
    • , Songxue Chi
    • , Jaime A. Fernandez-Baca
    • , James S. Lord
    • , Adam Berlie
    • , Atsuhiro Kotani
    • , Shigeo Mori
    •  & Shin-ichi Shamoto
  • Article
    | Open Access

    Bovine serum albumin proteins are used to fabricate antifouling coatings, but it is unclear which of these give the best coatings. Here, bovine serum albumin proteins from different purification processes are investigated, revealing that fatty acid-free proteins give superior antifouling properties.

    • Gamaliel Junren Ma
    • , Abdul Rahim Ferhan
    • , Joshua A. Jackman
    •  & Nam-Joon Cho
  • Article
    | Open Access

    Homogeneous deformation in metallic glasses is facilitated by high temperature and low strain rate. Here, the window for homogeneous deformation is expanded by the application of a pulsed current during tensile loading of a Zr55Cu30Al10Ni5 metallic glass, attributed to dynamic rejuvenation.

    • Qi Chen
    • , Meng Zhang
    • , Jiachang Gu
    • , Quanliang Cao
    • , Cheng Zhang
    • , Xiaotao Han
    • , Liang Li
    • , Weihua Wang
    •  & Lin Liu
  • Article
    | Open Access

    Van der Waals heterostructures stack together 2D materials to achieve unique performance. Here, 3D/3D heterostructures are created by inkjet printing of 2D MoS2 and reduced graphene oxide, and demonstrated for a heterostructure catalyst for the hydrogen evolution reaction.

    • Jui-Han Fu
    • , Ang-Yu Lu
    • , Nathan J. Madden
    • , Christine C. Wu
    • , Yen-Chang Chen
    • , Ming-Hui Chiu
    • , Khalid Hattar
    • , Jessica A. Krogstad
    • , Stanley S. Chou
    • , Lain-Jong Li
    • , Jing Kong
    •  & Vincent Tung
  • Article
    | Open Access

    Hydrogels are attractive for the treatment of waste water, but their mechanical properties are typically reduced when underwater. Here, a synthesis strategy is reported for a graphene oxide-coated hydrogel which can catalyze organic dye degradation in water over multiple cycles.

    • Guihua Yan
    • , Yunchao Feng
    • , Huiqiang Wang
    • , Yong Sun
    • , Xing Tang
    • , Wenjing Hong
    • , Xianhai Zeng
    •  & Lu Lin