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| Open AccessHigh-performance piezoelectric energy harvesting in amorphous perovskite thin films deposited directly on a plastic substrate
Traditional methods to incorporate polycrystalline thin film into flexible systems are often complicated and limited by their sizes. Here, the authors introduce flexible amorphous thin film energy harvester, based on perovskite oxides, on a plastic substrate for electromechanical energy harvesting.
- Ju Han
- , Sung Hyun Park
- & Yong Soo Cho
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Article
| Open AccessMechanically robust and personalized silk fibroin-magnesium composite scaffolds with water-responsive shape-memory for irregular bone regeneration
The regeneration of critical-size bone defects, especially those with irregular shapes, remains a clinical challenge. Here, the authors report a shape-memory, tailorable, self-adaptive and bioactive silk fibroin/magnesium composite scaffold that can quickly match irregular defects by simple trimming and lead to good interface integration.
- Zhinan Mao
- , Xuewei Bi
- & Yufeng Zheng
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Article
| Open AccessSustainable thermal regulation improves stability and efficiency in all-perovskite tandem solar cells
Mixed Sn-Pb perovskites have emerged as promising photovoltaic materials for both single- and multi-junction solar cells. Here, authors reveal the thermal degradation mechanism and incorporate carboranes for thermal regulation, resulting in stable all-perovskite tandems with efficiency of over 27%.
- Shuchen Tan
- , Chongwen Li
- & Zhongmin Zhou
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Article
| Open AccessDual-phase nano-glass-hydrides overcome the strength-ductility trade-off and magnetocaloric bottlenecks of rare earth based amorphous alloys
Metals often suffer from reduced strength and ductility after hydrogenation. Here, the authors show hydrogenation can lead to enhancement in strength and ductility accompanied by a large change in magnetic entropy, overcoming the bottlenecks of using amorphous alloys for magnetic refrigerants.
- Liliang Shao
- , Qiang Luo
- & Weihua Wang
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Article
| Open AccessSingle-zinc vacancy unlocks high-rate H2O2 electrosynthesis from mixed dioxygen beyond Le Chatelier principle
The principle of Le Chatelier is a fundamental concept in textbooks, serving as a guiding principle for controlling chemical and catalytic systems. In this study, the authors present an oxygen electroreduction system based on a single zinc vacancy catalyst, which operates in a manner that extends “beyond” Le Chatelier’s principle.
- Qi Huang
- , Baokai Xia
- & Sheng Chen
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Article
| Open AccessThe origin of exceptionally large ductility in molybdenum alloys dispersed with irregular-shaped La2O3 nano-particles
Application of Molybdenum alloys is hindered by reduced ductility at lower temperatures. Here, the author shows improved ductility in a Mo alloy with irregular-shaped rare-earth La2O3 nanoparticles achieved via rotary-swaging, attributed to the amorphization of the oxide-matrix interface.
- Yujie Chen
- , Yan Fang
- & Qian Yu
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Article
| Open AccessStretchable phosphorescent polymers by multiphase engineering
Stretchable phosphorescent materials have potential in applications such as wearable electronics, but achieving a suitable balance of emission and stretchability is challenging. Here, the authors report the use of microphase separation to show stretchability with emission lifetimes maintained.
- Nan Gan
- , Xin Zou
- & Wei Huang
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Article
| Open AccessInverted device architecture for high efficiency single-layer organic light-emitting diodes with imbalanced charge transport
Efficient organic light-emitting diodes require a multilayer architecture to confine charge recombination to the emissive layer. Here, authors demonstrate efficient single-layer devices for emitters with imbalanced charge transport without the need of additional charge transport or blocking layers.
- Xiao Tan
- , Dehai Dou
- & Gert-Jan A. H. Wetzelaer
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Article
| Open AccessAtomically dispersed asymmetric cobalt electrocatalyst for efficient hydrogen peroxide production in neutral media
The relationship between the structural configurations of M-N-C electrocatalysts and their performances in neutral environments has been insufficiently investigated. Here the authors demonstrate that an ultralow metal-loaded Co-N-C electrocatalyst, featuring the asymmetric Co-C/N/O configuration, exhibit exceptional efficiency in electrochemically producing hydrogen peroxide under neutral conditions.
- Longxiang Liu
- , Liqun Kang
- & Guanjie He
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Article
| Open AccessDynamics of growing carbon nanotube interfaces probed by machine learning-enabled molecular simulations
There is a lack of atomic level insight on the role of defects on carbon nanotubes' growth. Here, authors present a machine learning force field to drive near-microsecond simulations the entire growth process of this material, unveiling mechanisms of defect formation and healing.
- Daniel Hedman
- , Ben McLean
- & Feng Ding
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Article
| Open AccessSpin-orbit torque manipulation of sub-terahertz magnons in antiferromagnetic α-Fe2O3
Antiferromagnetic spintronics offer high speed operations, and reduced issues with stray fields compared to ferromagnetic systems, however, antiferromagnets are typically more challenging to manipulate electrically. Here, Yang, Kim, and coauthors demonstrate electrical control of magnon dispersion and frequency in an α-Fe2O3/Pt heterostructure.
- Dongsheng Yang
- , Taeheon Kim
- & Hyunsoo Yang
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Article
| Open AccessSustainable upcycling of mixed spent cathodes to a high-voltage polyanionic cathode material
Direct recycling of critical battery materials bring promise but a challenge for the mixed cathode chemistries. Here, the authors report a sustainable upcycling approach, transforming degraded LiFePO4 and Mn-rich cathodes into a high-voltage polyanionic material with an increased energy density and economic value.
- Guanjun Ji
- , Di Tang
- & Hui-Ming Cheng
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Article
| Open AccessElectric-field tunable Type-I to Type-II band alignment transition in MoSe2/WS2 heterobilayers
Photoluminescence and photocurrent measurements indicate that MoSe2/WS2 hetero-bilayers can be switched from type-I to type-II band alignment by applying a vertical electric field.
- Jed Kistner-Morris
- , Ao Shi
- & Nathaniel Gabor
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Article
| Open AccessCrown ether decorated silicon photonics for safeguarding against lead poisoning
Lead toxification in society is a public health crisis. The exposure to lead poisoning gives rise to a multitude of health issues. In this work, a chip-scale photonic platform that enables the highly quantitative detection of lead is demonstrated.
- Luigi Ranno
- , Yong Zen Tan
- & Jia Xu Brian Sia
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Article
| Open AccessThree-dimensional liquid metal-based neuro-interfaces for human hippocampal organoids
Providing a suitable multi-electrode array (MEA) for free-floating neural organoids is a great challenge. Here, authors present a mesh soft stretchable MEA for recording neural signals in human hippocampal organoids derived from induced pluripotent stem cells.
- Yan Wu
- , Jinhao Cheng
- & Xingyu Jiang
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Article
| Open AccessTailoring amorphous boron nitride for high-performance two-dimensional electronics
Here, the authors demonstrate a wafer-scale, low-temperature process using atomic layer deposition, for the synthesis of uniform, conformal amorphous boron nitride (aBN) thin films. They further fabricate aBN-encapsulated monolayer MoS2 field-effect transistors.
- Cindy Y. Chen
- , Zheng Sun
- & Joshua A. Robinson
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Article
| Open AccessSynergistic growth of nickel and platinum nanoparticles via exsolution and surface reaction
Utilizing “Chemistry at a point”, Ni is exsolved from a perovskite lattice under deposited Pt nanoparticles. This yields even smaller Ni Pt alloy nanoparticles on a perovskite nanofiber structure, exhibiting high catalytic activity.
- Min Xu
- , Yukwon Jeon
- & John T. S. Irvine
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Article
| Open AccessLead-free dual-frequency ultrasound implants for wireless, biphasic deep brain stimulation
Ultrasound-driven bioelectronics offer a wireless scheme for implants. Here, the authors reported a lead-free dual-frequency ultrasound implants for wireless, biphasic deep brain stimulation.
- Qian Wang
- , Yusheng Zhang
- & Jiagang Wu
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Article
| Open AccessSnail-inspired water-enhanced soft sliding suction for climbing robots
By mimicking the strong adhesive locomotion ability of snails, the authors present a sliding suction method to allow robots to climb with high adhesive force and low energy consumption up walls and on ceilings.
- Tianqi Yue
- , Hermes Bloomfield-Gadêlha
- & Jonathan Rossiter
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Article
| Open AccessTuning instability in suspended monolayer 2D materials
Tuning the instabilities of 2D materials can control their wrinkling behavior for interesting physical properties, but still challenging. Here, the authors report a push-to-shear experimental approach to control the wrinkling patterns of monolayer 2D materials and measure their bending stiffness.
- Yuan Hou
- , Jingzhuo Zhou
- & Yang Lu
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Article
| Open AccessDynamic microvilli sculpt bristles at nanometric scale
Bristleworms possess dedicated cells that can synthesize highly stereotypical bristles with sub-micrometric precision. Here, Ikeda and colleagues shed light on the underlying dynamics of cellular protrusions, revealing an extension-disassembly cycle that resembles a 3D printer.
- Kyojiro N. Ikeda
- , Ilya Belevich
- & Florian Raible
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Article
| Open AccessRapid and on-site wireless immunoassay of respiratory virus aerosols via hydrogel-modulated resonators
Infectious respiratory viruses have been an everlasting threaten to public health. Here, authors report a wireless immunoassay technology based on immuno-responsive hydrogel-modulated resonant sensors, which facilitate on-site respiratory virus surveillance.
- Xin Li
- , Rujing Sun
- & Qingjun Liu
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Article
| Open AccessElectrochemical-repaired porous graphene membranes for precise ion-ion separation
The preparation of atom-thick lattices with Å-scale pores is desirable for achieving ion selectivity and high ion flux. Here authors present a cm-scale membrane made of atom-thick graphene film hosting zero-dimensional pores spanning only a few Å, repaired using an in situ electrochemical strategy, yielding high Li+/Mg2+ separation performance.
- Zongyao Zhou
- , Kangning Zhao
- & Kumar Varoon Agrawal
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Comment
| Open AccessThe roll-to-roll revolution to tackle the industrial leap for perovskite solar cells
Roll-to-Roll (R2R) coating is a technology that potentially enhances throughput, reduces costs, and accommodates flexible substrates for fabricating various types of solar cells and modules. Here, authors discuss the R2R revolution to tackle the industrial leap for perovskite photovoltaic devices.
- Ershad Parvazian
- & Trystan Watson
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Article
| Open AccessUnconventional magnetism mediated by spin-phonon-photon coupling
Here Pantazopoulos, Feist, García-Vidal, and Kamra explore the combination spin, phonon and photon coupling in a system of magnetic nanoparticles, and find that it leads to an emergent spin-spin interaction. This interaction is long-range and leads to an unconventional form of magnetism that can exhibit strong magnetization at temperatures very close to the critical temperature.
- Petros Andreas Pantazopoulos
- , Johannes Feist
- & Akashdeep Kamra
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Article
| Open AccessHigh-temperature concomitant metal-insulator and spin-reorientation transitions in a compressed nodal-line ferrimagnet Mn3Si2Te6
The coupling between topological electronic properties and magnetic order offers a promising route for magnetoelectric control with great potential for both applications and fundamental physics. Here, Susilo et al demonstrate the rich tunability of magnetic properties in nodal-line magnetic semiconductor Mn3Si2Te6 using pressure as control knob.
- Resta A. Susilo
- , Chang Il Kwon
- & Jun Sung Kim
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Article
| Open AccessFirefly-inspired bipolar information indication system actuated by white light
Inspired by fireflies, a bimodal information indication system using a photochemical afterglow material within a photonic crystal matrix is developed to display both static and changing information, such as sample type and degree of degradation.
- Hanwen Huang
- , Jiamiao Yin
- & Changchun Wang
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Article
| Open AccessPolar Bloch points in strained ferroelectric films
Authors predict polar Bloch points with negative capacitance in tensile-strained ultrathin ferroelectric PbTiO3 film by phase-field simulations, observing their polarization structures by scanning transmission electron microscopic imaging.
- Yu-Jia Wang
- , Yan-Peng Feng
- & Xiu-Liang Ma
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Article
| Open AccessHalide Perovskite Inducing Anomalous Nonvolatile Polarization in Poly(vinylidene fluoride)-based Flexible Nanocomposites
Wang et al. report large nonvolatile polarization in stretchable polymer ferroelectrics incorporating perovskite nanocrystals. The built-in electric field from poled ferroelectrics stabilises Frenkel defects via interfacial coupling, which can also enhance the polarization of nonferroelectrics.
- Yao Wang
- , Chen Huang
- & Jiangyu Li
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Article
| Open AccessOvercoming strength-ductility tradeoff with high pressure thermal treatment
Conventional material processing methods often suffer by strength-ductility trade-off. Here, the authors show high-pressure and high-temperature treatment can transform an eutectic high entropy alloy to having a hierarchical microstructure with simultaneous enhancements of strength and ductility.
- Yao Tang
- , Haikuo Wang
- & Haofei Zhou
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Article
| Open AccessSpin-orbit-splitting-driven nonlinear Hall effect in NbIrTe4
Previous work proposed the Berry curvature dipole as the mechanism of the nonlinear Hall effect. Lee et al. establish the sign-changing Berry curvature hot spots from spin-orbit split bands as the origin of the Berry curvature dipole and link it to the nonlinear Hall effect in the topological semimetal NbIrTe4.
- Ji-Eun Lee
- , Aifeng Wang
- & Hyejin Ryu
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Article
| Open AccessVitrification-enabled enhancement of proton conductivity in hydrogen-bonded organic frameworks
Proton conduction is one of the interesting applications of hydrogen-bonded organic frameworks. Here, the authors report hydrogen-bonded organic framework that can be transformed into glassy state, effectively mitigating grain boundary effects, and significantly enhancing proton conduction performance.
- Feng-Fan Yang
- , Xiao-Lu Wang
- & Linfeng Liang
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Article
| Open AccessEfficient characterizations of multiphoton states with an ultra-thin optical device
Shadow tomography is efficient for quantum state characterization. Here, the authors implement shadow tomography on photonic states with a single metasurface, which alleviates the complexity in measurement
- Kui An
- , Zilei Liu
- & He Lu
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Article
| Open AccessNested non-covalent interactions expand the functions of supramolecular polymer networks
Supramolecular polymer networks have unique and useful properties due to the reversible nature of their cross-links. Here, the authors show that when two distinct supramolecular interaction classes exist within a single cross-link, new functions can result.
- David J. Lundberg
- , Christopher M. Brown
- & Jeremiah A. Johnson
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Article
| Open AccessNeural network kinetics for exploring diffusion multiplicity and chemical ordering in compositionally complex materials
The inherent chemical complexity in compositionally complex materials present a challenge in studying atomic diffusion. Here, the authors introduce a neural network kinetics scheme to effectively address this issue and reveal anomalous diffusion behavior in complex concentrated alloys.
- Bin Xing
- , Timothy J. Rupert
- & Penghui Cao
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Article
| Open AccessSustainable 3D printing by reversible salting-out effects with aqueous salt solutions
Here, the authors show a facile and sustainable 3D printing by utilizing a reversible salting-out effect on poly(N-isopropylacrylamide) (PNIPAM) solutions. Aqueous salt solutions lower the phase transition temperature of PNIPAM solutions below 10 °C and instantly solidify the PNIPAM solutions upon contact.
- Donghwan Ji
- , Joseph Liu
- & Jinhye Bae
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Article
| Open AccessBicontinuous RuO2 nanoreactors for acidic water oxidation
Developing stable water oxidation catalysts is of great importance for proton-exchange membrane water electrolyzers. Here the authors report a bicontinuous nanoreactor composed of multiscale defected RuO2 nanocrystals for robust acidic water oxidation reactivity.
- Ding Chen
- , Ruohan Yu
- & Shichun Mu
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Article
| Open AccessLarge transverse thermoelectric effect induced by the mixed-dimensionality of Fermi surfaces
The conversion between longitudinal heat flow and transverse charge current is a promising energy harvesting technology. Here, the authors show the large transverse thermoelectric effect induced by the mixed-dimensionality of Fermi surfaces.
- Hikari Manako
- , Shoya Ohsumi
- & D. Aoki
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Article
| Open AccessPhase-separated droplets swim to their dissolution
Here the authors identify a generic coupling in phase-separated liquids between motility and phase equilibria perturbations: phase-separated droplets swim to their dissolution. This suggests alternative transport mechanism for biomolecular condensates.
- Etienne Jambon-Puillet
- , Andrea Testa
- & Eric R. Dufresne
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Article
| Open AccessA locally solvent-tethered polymer electrolyte for long-life lithium metal batteries
Solid polymer electrolytes containing N,N-dimethylformamide (DMF) exhibit improved Li+ conductivity but poor cycle life due to incompatibility between the Li metal anode and DMF. Here, the authors report a polymer electrolyte composited with Hofmann-DMF complex that achieves both high Li+ conductivity and long cycle life.
- Yanfei Zhu
- , Zhoujie Lao
- & Guangmin Zhou
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Article
| Open AccessCorrelating activities and defects in (photo)electrocatalysts using in-situ multi-modal microscopic imaging
Physicochemical heterogeneity poses a significant constraint in photocatalyst advancement. Here the authors introduce a multimodal optical microscopy platform to assess activity and defects concurrently in photoelectrocatalysts, revealing that disorder can unexpectedly enhance local photoelectrocatalytic performance in certain instances.
- Camilo A. Mesa
- , Michael Sachs
- & Raj Pandya
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Article
| Open AccessSelf-assembly of nanocrystal checkerboard patterns via non-specific interactions
The self-assembly of nanocrystals into checkerboard lattice patterns is difficult to control. Here, the authors investigate the formation of such patterns from hydrophilic/hydrophobic bifunctionalized Ag nanocubes and use multiscale simulations to understand the effects of physical forces.
- Yufei Wang
- , Yilong Zhou
- & Andrea R. Tao
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Article
| Open AccessBulk transparent supramolecular glass enabled by host–guest molecular recognition
Strategies to produce supramolecular glass and the study of its intrinsic structure and mechanical properties remains largely unexplored. Here, the authors prepare a supramolecular glass via the host–guest recognition between methyl-β-cyclodextrin and para-hydroxybenzoic acid with recyclability, compatibility, and thermal processability.
- Changyong Cai
- , Shuanggen Wu
- & Shengyi Dong
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Article
| Open AccessConstructing ordered and tunable extrinsic porosity in covalent organic frameworks via water-mediated soft-template strategy
The synthesis of covalent organic frameworks (COFs) by a soft-template methodology is challenging. Here, the authors attach the soft templates to the COFs backbone via ion bonds, avoiding crystallization incompatibilities and allowing subsequent removal of the template by ion exchange for enhanced U(VI)/Th(IV) adsorption performance.
- Ningning He
- , Yingdi Zou
- & Lijian Ma
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Article
| Open AccessDiamond with Sp2-Sp3 composite phase for thermometry at Millikelvin temperatures
To measure temperatures close to absolute zero, authors developed a kind of composite phase diamond (CPD) that can measure temperature at the millikelvin level, making it a promising candidate for next–generation cryogenic temperature sensors.
- Jianan Yin
- , Yang Yan
- & Jian Lu
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Article
| Open AccessEvidence for a finite-momentum Cooper pair in tricolor d-wave superconducting superlattices
The authors study a YbCoIn5/CeCoIn5/YbRhIn5 heterostructure. Using non-reciprocity in the second harmonic transport response, they demonstrate the existence of a specific form of finite-momentum pairing called a helical superconducting state, where the phase of the order parameter is spontaneously spatially modulated.
- T. Asaba
- , M. Naritsuka
- & Y. Matsuda
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Article
| Open AccessMulti-color dual wavelength vat photopolymerization 3D printing via spatially controlled acidity
Dual wavelength vat photopolymerization has emerged as a powerful approach to create multimaterial objects but require changing the resin during the printing process. Here, the authors develop a method of dual-wavelength 3D printing that can directly access multicolor parts without requiring changing of resin feedstocks or introduction of new materials during the printing process.
- Kyle C. H. Chin
- , Grant Ovsepyan
- & Andrew J. Boydston
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Article
| Open AccessFrom creep to flow: Granular materials under cyclic shear
Granular materials exhibit yielding behaviors rather different from glasses that can be elastic. Here, Yuan et al. show a cross-over from creep to diffusive dynamics in three-dimensional granular systems under cyclic shear and that the relaxation process depends on the roughness of the constituent particles.
- Ye Yuan
- , Zhikun Zeng
- & Yujie Wang
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Review Article
| Open AccessCritical learning from industrial catalysis for nanocatalytic medicine
The knowledge gained from industrial catalysis benefits advancements of nanocatalytic medicines. Here the authors review the similarities, differences and connections in catalytic reactions between industrial and medical applications to support deep understanding and rational design of nanocatalytic medicines.
- Zhaokui Jin
- , Lingdong Jiang
- & Qianjun He