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| Open AccessNarrowband room temperature phosphorescence of closed-loop molecules through the multiple resonance effect
Luminescent materials with narrowband emissions are vital for optoelectronic applications. Here, the authors achieve room temperature phosphorescence with a FWHM of 30 nm through the multiple resonance effect and showcase its practical application in X-ray imaging.
- Xiaokang Yao
- , Yuxin Li
- & Zhongfu An
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Article
| Open AccessBiological fermentation pilot-scale systems and evaluation for commercial viability towards sustainable biohydrogen production
Biohydrogen production technologies effectively use waste biomass resources and produce high-purity hydrogen. Here, authors present and evaluate a continuous pilot-scale biohydrogen production system based on spectrum coupling, thermal effect, and multiphase flow properties of hydrogen production.
- Quanguo Zhang
- , Youzhou Jiao
- & Nadeem Tahir
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Article
| Open AccessPretreatment-free SERS sensing of microplastics using a self-attention-based neural network on hierarchically porous Ag foams
Detection and identification of microplastics (MPs) in environmental samples is hampered by the need for isolation and pretreatment methods. Here, the authors combine porous Ag substrates with self-attention neural networks to directly identify six types of MPs in environmental samples.
- Olga Guselnikova
- , Andrii Trelin
- & Yusuke Yamauchi
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Article
| Open AccessOn the quality of commercial chemical vapour deposited hexagonal boron nitride
Large-scale 2D hexagonal boron nitride (hBN) grown via chemical vapour deposition (CVD) has strategic importance for various applications of 2D materials. Here, the authors analyse the structural and electrical properties of commercially available CVD hBN from 9 popular suppliers and compare the results with mechanically exfoliated hBN and in-house CVD hBN.
- Yue Yuan
- , Jonas Weber
- & Mario Lanza
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Article
| Open AccessDomain wall magnetic tunnel junction-based artificial synapses and neurons for all-spin neuromorphic hardware
The authors demonstrate all-spin synapses and neurons using domain wall-magnetic tunnel junctions, utilizing synergistic spin-orbit torque and Dzyaloshinskii-Moriya interaction. The intrinsic linearity is required for compact and energy-efficient bio-inspired hardware for neuromorphic computing.
- Long Liu
- , Di Wang
- & Ming Liu
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Article
| Open AccessDynamics underlie the drug recognition mechanism by the efflux transporter EmrE
Here, the authors reveal the protonation of a single membrane embedded glutamate residue within the homodimer of the efflux transporter EmrE modulates the structure and dynamics in an allosteric manner using NMR spectroscopy.
- Jianping Li
- , Ampon Sae Her
- & Nathaniel J. Traaseth
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Article
| Open AccessCobalt-catalyzed cross-electrophile coupling of alkynyl sulfides with unactivated chlorosilanes
Transition-metal catalyzed cross-electrophile coupling (XEC) is a powerful tool for the construction of molecules but XEC between carbon electrophile and chlorosilanes to access organosilicon compounds remains underdeveloped. Here the authors disclose a highly efficient cobalt-catalyzed cross-electrophile alkynylation of a broad range of unactivated chlorosilanes with alkynyl sulfides as a stable and practical alkynyl electrophiles.
- Donghui Xing
- , Jinlin Liu
- & Liangbin Huang
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Article
| Open AccessThe impact of magnesium content on lithium-magnesium alloy electrode performance with argyrodite solid electrolyte
All-solid-state lithium-based batteries require high stack pressure during operation. Here, we investigate the mechanical, transport, and interfacial properties of Li-rich magnesium alloy and show enhanced performance at low pressure and ambient temperature for alloy-based electrodes with less than 5 at% Mg content.
- Jack Aspinall
- , Krishnakanth Sada
- & Mauro Pasta
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Article
| Open AccessReconfigurable image processing metasurfaces with phase-change materials
Researchers demonstrate that image-processing metasurfaces can be dynamically reconfigured by using phase-change materials. The work might lead to novel tunable devices for compact optical computing for applications in AR/VR and bio-medical imaging.
- Michele Cotrufo
- , Shaban B. Sulejman
- & Andrea Alù
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Article
| Open AccessInternal water circulation mediated synergistic co-hydrolysis of PET/cotton textile blends in gamma-valerolactone
Recycling strategies for mixed plastics and textile blends currently aim for recycling only one of the components. Here the authors demonstrate a water coupling strategy to co-hydrolyze polyester/cotton textile blends into polymer monomers and platform chemicals.
- Shun Zhang
- , Wenhao Xu
- & Yu-Zhong Wang
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Article
| Open AccessZero-field J-spectroscopy of quadrupolar nuclei
Zero to ultralow-field NMR provides chemical information in the absence of a high magnetic field but it is difficult to measure molecules with quadrupolar nuclei due to their fast relaxation. This study examines zero-field J-spectra from isotopologues of ammonium cations, with quadrupolar nuclei, revealing the presence of a primary isotope effect of −58 mHz.
- Román Picazo-Frutos
- , Kirill F. Sheberstov
- & Danila A. Barskiy
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Article
| Open AccessProgrammable quantum emitter formation in silicon
Quantum emitters in Si show promise for applications in quantum information processing and communication due to their potential as spin-photon interfaces. Jhuria et al. report the formation of selected telecom emitters in Si using local writing and erasing by fs laser pulses and annealing in a hydrogen atmosphere.
- K. Jhuria
- , V. Ivanov
- & T. Schenkel
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Article
| Open AccessIntermittency in the not-so-smooth elastic turbulence
Intermittency is the behavior of extreme fluctuations observed in the flow of a fluid that is often associated with high Reynolds numbers. Here, the authors report intermittency in elastic turbulence at the low Reynolds number and high Deborah number limit.
- Rahul K. Singh
- , Prasad Perlekar
- & Marco E. Rosti
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Article
| Open AccessIntegrated photonic encoder for low power and high-speed image processing
The researchers showcase a silicon-photonics-based analog approach for large-scale image processing that can be deployed for high-speed image compression and de-noising using an auto-encoder framework with minimal power consumption.
- Xiao Wang
- , Brandon Redding
- & Raktim Sarma
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Article
| Open AccessNoninvasive imaging-guided ultrasonic neurostimulation with arbitrary 2D patterns and its application for high-quality vision restoration
Researchers have developed a noninvasive retina prosthesis based on ultrasound for treating blindness. This device uses ultrasound waves to stimulate the retina, creating artificial vision confirmed through behavior tests, offering a safer alternative to invasive treatments.
- Gengxi Lu
- , Chen Gong
- & Qifa Zhou
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Article
| Open AccessProton-coupled transport mechanism of the efflux pump NorA
Efflux pumps confer antibiotic resistance by coupling proton import with drug export. In this work, the authors uncover the proton-coupled transport mechanism for the clinically relevant efflux pump NorA from the pathogenic bacterium S. aureus.
- Jianping Li
- , Yan Li
- & Nathaniel J. Traaseth
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Article
| Open AccessBreak down the decentralization-security-privacy trilemma in management of distributed energy systems
Decentralized management of distributed energy sources for lower energy costs is of high interest. Here, authors show how privacy and security concerns are addressed under a decentralization framework through blockchain and parallelizable algorithms.
- Qinghan Sun
- , Huan Ma
- & Qun Chen
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Article
| Open AccessEnantioselective nickel-catalyzed anodic oxidative dienylation and allylation reactions
Precision control of stereochemistry in radical reactions remains a formidable challenge. Here the authors demonstrate an electricity driven asymmetric Lewis acid catalysis to facilitate asymmetric dienylation and allylation reactions, resulting in the formation of all-carbon quaternary stereocenters.
- Qinglin Zhang
- , Jiayin Zhang
- & Chang Guo
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Article
| Open AccessInhomogeneous high temperature melting and decoupling of charge density waves in spin-triplet superconductor UTe2
Understanding the physics of charge density waves in emerging superconductors may reveal insights into unconventional superconductivity mechanisms. Here, the authors study the temperature and magnetic-field dependence of charge-density-wave suppression in the unconventional superconductor UTe2.
- Alexander LaFleur
- , Hong Li
- & Ilija Zeljkovic
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| Open AccessIntelligent wearable olfactory interface for latency-free mixed reality and fast olfactory enhancement
Liu et al. developed AI-driven, wearable olfactory interfaces with odor generators for realizing latency-free mixed-reality and fast olfaction recovery. This technology enables personalized olfactory feedback and enhanced virtual environments for various applications including education, and clinical treatment.
- Yiming Liu
- , Shengxin Jia
- & Xinge Yu
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| Open AccessEnhancement of phase transition temperature through hydrogen bond modification in molecular ferroelectrics
The authors propose a hydrogen bond modification method to achieve introduction of polarization and enhancement of phase transition temperature in molecular ferroelectrics, exploring the piezoelectric prototype devices of the molecular ferroelectric.
- Yu-An Xiong
- , Sheng-Shun Duan
- & Yu-Meng You
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Article
| Open AccessSynergetic regulation of SEI mechanics and crystallographic orientation for stable lithium metal pouch cells
The application of Li-metal batteries (LMBs) is impeded by unstable solid electrolyte interphase (SEI) and uncontrollable Li dendrites growth. Here, the authors present an YF3/PMMA composite layer to achieve high-performance LMBs via the synergetic regulation of SEI mechanics and Li crystallography.
- Yanhua Zhang
- , Rui Qiao
- & Jiangxuan Song
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Article
| Open AccessDuality between predictability and reconstructability in complex systems
Reconstructing the structure of a complex networked system and predicting its time evolution to understand its functions are usually two subjects that are treated separately. The authors propose a theoretical framework based on information theory, that uncovers the relation between reconstructability and predictability in networked systems.
- Charles Murphy
- , Vincent Thibeault
- & Patrick Desrosiers
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Article
| Open AccessAbove-room-temperature chiral skyrmion lattice and Dzyaloshinskii–Moriya interaction in a van der Waals ferromagnet Fe3−xGaTe2
There are now several van der Waals magnets that have been shown to host skyrmions, however, these are typically hampered by a low Curie temperature, restricting the temperature at which the skyrmions can exist. Here, Zhang, Jiang, Jiang and coauthors find a skyrmion lattice in the van der Waals magnet Fe3 − xGaTe2 above room temperature and demonstrate the critical role of symmetry breaking in crystal lattice in the origin of these skyrmions.
- Chenhui Zhang
- , Ze Jiang
- & Hyunsoo Yang
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Article
| Open AccessSpike-based dynamic computing with asynchronous sensing-computing neuromorphic chip
Mimicking high-level abstraction of the brain to achieve energy advantages is a fundamental issue in neuromorphic computing. Here, the authors fabricate an asynchronous chip and demonstrate a high-accuracy neuromorphic system with power consumption of 0.7mW.
- Man Yao
- , Ole Richter
- & Guoqi Li
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Article
| Open AccessElectrostatically controlled spin polarization in Graphene-CrSBr magnetic proximity heterostructures
The electrostatic control of magnetic properties is central for future development of spintronic devices. Here, the authors show that the magnetic proximity effect induces an exchange shift in the band structure of graphene interfaced with CrSBr.
- Boxuan Yang
- , Bibek Bhujel
- & Bart J. van Wees
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Article
| Open AccessHumidity-tolerant porous polymer coating for passive daytime radiative cooling
A consistency issue with the production of porous polymer-based radiative coatings can be a significant drop in the cooling performance when dried under humid conditions. This issue is efficiently resolved by adding polymer reinforcement.
- Dongpyo Hong
- , Yong Joon Lee
- & Sang Yoon Park
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Article
| Open AccessNon-thermal emission in gap-mode plasmon photoluminescence
Photoluminescence from plasmonic nanostructures exhibits diverse wavelength dependent nonlinear behaviors with debated origins. Here, authors use plasmonic gap mode resonators with precise nanoscale confinement to show this nonlinear emission can become dominated by non-Fermi carrier contributions.
- Robert Lemasters
- , Manoj Manjare
- & Hayk Harutyunyan
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Article
| Open AccessLimit state equation and failure pressure prediction model of pipeline with complex loading
Assessing failure pressure is critical in determining pipeline integrity. In this study, based on the unified yield criterion, authors propose a limit state equation for steel pipes under various loads which can be converted into a series of failure pressure evaluation models for pipeline with different yield criteria.
- Ming-ming Sun
- , Hong-yuan Fang
- & Ke-Jie Zhai
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Article
| Open AccessSteering and cloaking of hyperbolic polaritons at deep-subwavelength scales
Polaritons – hybrid light-matter excitations – in van der Waals materials hold promise for photonics applications below the diffraction limit. Here, the authors demonstrate in-plane steering and cloaking of phonon polaritons in assembled micro-structures based on α-MoO3 films with misaligned crystallographic orientations.
- Hanchao Teng
- , Na Chen
- & Qing Dai
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Article
| Open AccessSynergizing habits and goals with variational Bayes
Intelligent agents can perform two types of behavior, habitual and goal-directed. The authors propose a deep learning framework using a variational Bayes approach, which computationally explains many aspects of the interaction between the two types of behaviors in sensorimotor tasks.
- Dongqi Han
- , Kenji Doya
- & Jun Tani
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Article
| Open AccessHigh-power electrically pumped terahertz topological laser based on a surface metallic Dirac-vortex cavity
The researchers showcase an exciting surface metallic Dirac-vortex cavity design with enhanced power capabilities for electrically pumped Topological Lasers in the THz spectral range.
- Junhong Liu
- , Yunfei Xu
- & Shenqiang Zhai
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Article
| Open AccessHybrid architectures for terahertz molecular polaritonics
Metasurface-based architectures enhance light-matter interactions between a terahertz photonic mode and glucose vibrational resonance. This platform allows new physical and chemical properties of hybrid light-matter states to be exploited.
- Ahmed Jaber
- , Michael Reitz
- & Jean-Michel Ménard
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Article
| Open AccessMolecular orbital breaking in photo-mediated organosilicon Schiff base ferroelectric crystals
Switchable structural and physical bistability in ferroelectric materials can be achieved as result of molecular orbital breaking. Here, the authors describe the photo-mediated bistability in organosilicon Schiff base ferroelectric crystals for the modulation of dielectric, second-harmonic generation, and ferroelectric polarization and showing good in vitro biocompatibility.
- Zhu-Xiao Gu
- , Nan Zhang
- & Han-Yue Zhang
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Article
| Open AccessIn-situ noncovalent interaction of ammonium ion enabled C–H bond functionalization of polyethylene glycols
The noncovalent interaction of ammonium ion with multidentate oxygen-based host serving as a key reacting center in catalytic reactions is rare. In this work, the authors report a noncovalent interaction of ammonium ion enabled reactivity enhancement process, achieving the C–H functionalization of polyethylene glycols with acrylates.
- Zongnan Zhang
- , Xueli Lv
- & Rong Zeng
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Article
| Open AccessTunnel junctions based on interfacial two dimensional ferroelectrics
The authors study tunneling junctions in rhombohedral MoS2 bilayers and correlate their performance with the local domain layout. They show that the switching behavior in sliding ferroelectrics is strongly dependent on the pre-existing domain structure.
- Yunze Gao
- , Astrid Weston
- & Roman Gorbachev
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Article
| Open AccessAnomalous behavior of critical current in a superconducting film triggered by DC plus terahertz current
The authors study the [Nb/V/Ta] superconducting artificial superlattice, known to support a superconducting diode effect, by pulsed THz spectroscopy and simultaneous transport. They found a non-monotonic switching between the superconducting and normal state, which can be explained if the THz-driven vortex depinning determines the critical current.
- Fumiya Sekiguchi
- , Hideki Narita
- & Yoshihiko Kanemitsu
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Article
| Open AccessSpider-silk-inspired strong and tough hydrogel fibers with anti-freezing and water retention properties
Hydrogel fibres have potential in a range of applications such as flexible electronics, but achieving the desired mechanical properties can be challenging. Here, the authors report spider silk-inspired hydrogel fibres with tuneable mechanical properties suitable for flexible electronics.
- Shaoji Wu
- , Zhao Liu
- & Yurong Yan
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Article
| Open AccessRevealing the hidden structure of disordered materials by parameterizing their local structural manifold
The structure of crystalline materials plays a central role in materials science, but the disordered structure of metallic glass is difficult to characterize and describe. Here, the authors use diffusion maps on atomistic data to obtain general structural descriptors tied to atomic positions.
- Thomas J. Hardin
- , Michael Chandross
- & Michael D. Shields
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Article
| Open AccessTransparent radiative cooling cover window for flexible and foldable electronic displays
In this work, authors synthesize transparent radiative cooling cover windows for flexible and foldable electronic devices. Besides demonstrated enhanced mechanical and moisture-impermeable properties, these mitigate temperature rise of devices under solar irradiation and improve overall thermal management.
- Kang Won Lee
- , Jonghun Yi
- & Dong Rip Kim
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Article
| Open AccessUrea-formaldehyde resin room temperature phosphorescent material with ultra-long afterglow and adjustable phosphorescence performance
Organic room temperature phosphorescent materials have useful properties, but development can be limited by processing and stability challenges. Here, the authors report a derivatisation strategy for the preparation of room temperature phosphorescent materials responsive to an electrostatic field.
- Wensheng Xu
- , Bowei Wang
- & Ligong Chen
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Article
| Open AccessUnusual facet and co-catalyst effects in TiO2-based photocatalytic coupling of methane
Designing photocatalysts to enhance the efficiency of non-oxidative coupling of methane is a challenging task. Here, the authors report that the anatase TiO2 with exposed {101} facets and Pd co-catalyst enables efficient and selective methane coupling to ethane via a heterogeneous-homogeneous hybrid reaction pathway.
- Huizhen Zhang
- , Pengfei Sun
- & Ye Wang
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Article
| Open AccessHighly porous metal-organic framework liquids and glasses via a solvent-assisted linker exchange strategy of ZIF-8
The canonical metal-organic framework ZIF-8 does not melt and form a glass. Here, authors incorporated two additional organic linkers into ZIF-8 to generate meltable derivatives which can be transformed into highly porous glasses by melt-quenching.
- Wen-Long Xue
- , Pascal Kolodzeiski
- & Sebastian Henke
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Article
| Open AccessAn inorganic-blended p-type semiconductor with robust electrical and mechanical properties
The authors report an inorganic tellurium-selenium-oxygen (TeSeO) alloyed semiconductor for high-mobility p-channel transistors and broadband photodetectors, through the scalable thermal evaporation method combined with post-oxygen implantation.
- You Meng
- , Weijun Wang
- & Johnny C. Ho
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Article
| Open AccessRemarkable flexibility in freestanding single-crystalline antiferroelectric PbZrO3 membranes
Authors find that freestanding single crystalline antiferroelectric PbZrO3 membranes exhibit remarkable flexibility that can endure a maximum bending strain of 3.5%, with the assistance of mechanical-induced antiferroelectric-ferroelectric phase transition.
- Yunting Guo
- , Bin Peng
- & Ming Liu
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Article
| Open AccessUltrafast all-optical toggle writing of magnetic bits without relying on heat
Toggle switching refers to the switching of magnetization induced by a train of ultrashort laser pulses. The high speed make such switching in extremely promising for devices, however, the underlying toggle switching mechanism in metals is due to heating, and thus has a downside of dissipation. Here, Zalewski et al demonstrate ultrafast ‘cold’ toggle switching, with a mechanism that does not rely on heating in dielectric Cobalt doped Yittrium Iron Garnet.
- T. Zalewski
- , A. Maziewski
- & A. Stupakiewicz
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Article
| Open AccessDirect observation of electron transfer in solids through X-ray crystallography
Electron transfer in solids is a fundamental process in many functional nanomaterials. Here, the authors directly observe this process via x-ray crystallography for incorporating of electron-donor guest molecules in macrocyclic nanotube crystals.
- Daiji Ogata
- , Shota Koide
- & Junpei Yuasa
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Article
| Open AccessHeat-activated growth of metastable and length-defined DNA fibers expands traditional polymer assembly
The combination of dynamic, energy driven folding and growth with structural stiffness and length control is difficult to achieve in synthetic polymer self-assembly. Here the authors show that highly charged, monodisperse DNA oligomers assemble via seeded growth into length-controlled supramolecular fibers during heating.
- Michael D. Dore
- , Muhammad Ghufran Rafique
- & Hanadi F. Sleiman
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Article
| Open AccessReal-time observation of two distinctive non-thermalized hot electron dynamics at MXene/molecule interfaces
Photoexcited MXenes could transfer charge carriers to or heat molecules at their interfaces. Here, the authors show using time-resolved spectroscopy that the non-thermalized carriers can directly transfer to molecules or heat them within 125 fs.
- Qi Zhang
- , Wei Li
- & Xueming Yang