Featured
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Article
| Open AccessSelf acceleration from spectral geometry in dissipative quantum-walk dynamics
The strong connection between the dynamics of a physical system and its Hamiltonian’s spectrum has scarcely been applied in the non-Hermitian case. Here, the authors use a photonic quantum walk to confirm and expand previous theoretical analyses connecting self-acceleration dynamics with non-trivial point-gap topology.
- Peng Xue
- , Quan Lin
- & Wei Yi
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Article
| Open AccessSyntheses and reactivities of strained fused-ring metallaaromatics containing planar eleven-carbon chains
7C-10C and 12C-carbolong complexes with planar ligand skeletons containing 7-10 and 12 carbon atoms have been previously reported but 11C-carbolong complexes with a planar carbon-chain ligand are elusive. Here, the authors prepare metallabenzyne-fused metallapentalenes and metallabenzene-fused metallapentalynes, both representing 11C-carbolong complexes with a planar carbon-chain ligand
- Binbin Xu
- , Wei Mao
- & Haiping Xia
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Article
| Open AccessTitanium catalyzed [2σ + 2π] cycloaddition of bicyclo[1.1.0]-butanes with 1,3-dienes for efficient synthesis of stilbene bioisosteres
Natural stilbenes show significant potential in the prevention and treatment of diseases due to their diverse pharmacological activities. Here the authors present a mild and effective Ti-catalyzed intermolecular radical-relay cycloaddition reaction with good regio- and trans-selectivity offering rapid access to structurally diverse stilbene bioisosteres.
- Yonghong Liu
- , Zhixian Wu
- & Lei Shi
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Article
| Open AccessHighly tunable ground and excited state excitonic dipoles in multilayer 2H-MoSe2
Here, the authors discover the ground and excited state interlayer excitons in bi- and tri-layer 2H-MoSe2 crystals which exhibit electric-field-driven hybridisation with the intralayer A excitons, showing distinct spin, layer and valley characteristics.
- Shun Feng
- , Aidan J. Campbell
- & Brian D. Gerardot
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Article
| Open AccessStable pure-green organic light-emitting diodes toward Rec.2020 standard
It is essential to manipulate the dynamic behaviour of charge carriers and excitons in organic light-emitting diodes. Here, authors report the trapping of injected electrons by a thermally activated delayed fluorescence assistant molecule in a bipolar host matrix and achieve long device stability.
- Xun Tang
- , Tuul Tsagaantsooj
- & Chihaya Adachi
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Article
| Open AccessOrbital-dependent electron correlation in double-layer nickelate La3Ni2O7
Recently, superconductivity near 80 K was observed in La3Ni2O7 under high pressure, but the mechanism is debated. Here the authors report angle-resolved photoemission spectroscopy measurements under ambient pressure, revealing flat bands with strong electronic correlations that could be linked to superconductivity.
- Jiangang Yang
- , Hualei Sun
- & X. J. Zhou
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Article
| Open AccessOrganocatalytic skeletal reorganization for enantioselective synthesis of S-stereogenic sulfinamides
The enantioselective synthesis of S-stereogenic sulfinamides has garnered considerable attention due to their unique structural and physicochemical properties but catalytic asymmetric synthesis of sulfinamides still remains challenging. Here, the authors present the synthesis of S-stereogenic sulfinamides through the peptide-mimic phosphonium salt-catalyzed asymmetric skeletal reorganization of simple prochiral and racemic sulfoximines.
- Zanjiao Liu
- , Siqiang Fang
- & Tianli Wang
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Perspective
| Open AccessRediscovery of mononuclear phagocyte system blockade for nanoparticle drug delivery
Temporal blockade of the mononuclear phagocyte system is an approach to enhance the therapeutic efficiency of nanocarrier drug-delivery systems but the broad applicability is hindered by the complexity of optimisation and management of potential side effects. Here, the authors review the development of this technique and show its efficiency using meta-analysis of the published data and discuss essential features for its successful translation to clinic.
- Ivan V. Zelepukin
- , Konstantin G. Shevchenko
- & Sergey M. Deyev
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Article
| Open AccessIntermolecular interactions probed by rotational dynamics in gas-phase clusters
The authors demonstrate, using coincident Coulomb explosion imaging, that the rotational dynamics of single nitrogen molecules can be used as a probe to sense the interactions with surrounding Ar atoms in gas-phase clusters.
- Chenxu Lu
- , Long Xu
- & Jian Wu
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Article
| Open AccessDiastereoselective dearomatization of indoles via photocatalytic hydroboration on hydramine-functionalized carbon nitride
Dearomative hydroboration of predominantly existing indole derivatives provides a straightforward strategy to synthesize boryl indolines, but developing eco-friendly methods for remains challenging. Here, the authors develop a method for heterogeneous photocatalytic trans-hydroboration of indole derivatives with NHC-borane.
- Qiao Zhang
- , Wengang Xu
- & Mingbo Wu
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Article
| Open AccessOrigin of the light-induced spin currents in heavy metal/magnetic insulator bilayers
The authors study the light-induced spin current observed in W/Y3Fe5O12 heterojunctions, elucidating the photo-generated spin current, rather than light-thermally induced spin current, by photon-magnon interaction.
- Hongru Wang
- , Jing Meng
- & Lin Sun
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Article
| Open AccessGeneral synthesis of ionic-electronic coupled two-dimensional materials
2D AMX2 compounds (where A is a monovalent metal ion, M is a trivalent metal, and X is a chalcogen) are a family of materials with coupled ionic-electronic properties. Here, the authors report a chemical vapor deposition strategy to fabricate 20 types of 2D AMX2 flakes, exhibiting superionic conductivity or room temperature ferroelectricity.
- Xiang Xu
- , Yunxin Chen
- & Tianyou Zhai
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Article
| Open AccessDual-mode harvest solar energy for photothermal Cu2-xSe biomineralization and seawater desalination by biotic-abiotic hybrid
Biotic-abiotic photosynthetic systems hold great promise to innovate solar-driven chemical transformation. Here, the authors construct a biotic-abiotic hybrid system composed of Shewanella oneidensis MR-1 and biogenic Se0 nanoparticles for photothermal Cu2-xSe biomineralization and then for seawater desalination.
- Sheng-Lan Gong
- , YangChao Tian
- & Li-Jiao Tian
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Article
| Open AccessDrug screening on digital microfluidics for cancer precision medicine
In-vitro platforms for personalized cancer diagnosis is required high sensitivity. Here, the authors developed a digital microfluidic system for drug screening using primary tumor cells and established a working protocol for precision medicine.
- Jiao Zhai
- , Yingying Liu
- & Yanwei Jia
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Article
| Open AccessRevealing the mechanism and function underlying pairwise temporal coupling in collective motion
It is known that spatially localized interactions can give rise to self-organized collective motion. Here, by studying pairwise interactions in juvenile zebrafish, authors reveal the role of reciprocal temporal coupling and find that temporal coordination considerably improves spatial responsiveness, such as reacting to changes in the direction of motion of a partner.
- Guy Amichay
- , Liang Li
- & Iain D. Couzin
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Article
| Open AccessEmergent disorder and mechanical memory in periodic metamaterials
Frustrated magnetic systems typically have multiple ground state configurations. While such multistability is common in amorphous materials, periodic mechanical systems have long range elastic interactions that tend to lead to a long-range ordered ground state. Herein, Sirote-Katz, Shohat et al. introduce periodic mechanical systems that have many disordered metastable states.
- Chaviva Sirote-Katz
- , Dor Shohat
- & Yair Shokef
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Article
| Open AccessObservation of unusual outer-sphere mechanism using simple alkenes as nucleophiles in allylation chemistry
Allylic substitution reaction of alkenes has been well-developed, but it has limitations, partly due to the intrinsic predilection for an inner-sphere mechanism. Herein, the authors present an outer-sphere mechanism in Rh-catalyzed allylic substitution reaction of simple alkenes using gem-difluorinated cyclopropanes as allyl surrogates.
- Yaxin Zeng
- , Han Gao
- & Ying Xia
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Article
| Open AccessHeavy-atom tunnelling in singlet oxygen deactivation predicted by instanton theory with branch-point singularities
Singlet oxygen relaxes in water to its triplet ground state. Here, the authors show that heavy-atom tunnelling speeds up this reaction from time scales longer than the age of the universe to microseconds.
- Imaad M. Ansari
- , Eric R. Heller
- & Jeremy O. Richardson
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Article
| Open AccessElectrostatic-induced ion-confined partitioning in graphene nanolaminate membrane for breaking anion–cation co-transport to enhance desalination
Two-dimensional graphene-based membranes have gained much interest, but they suffer from poor rejection for monovalent salts. Here, the authors develop an electrostatic-induced ion partitioning strategy to suppress anion-cation transmembrane co-transport, improving the desalination performance.
- Haiguang Zhang
- , Jiajian Xing
- & Xie Quan
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Article
| Open AccessModulate stress distribution with bio-inspired irregular architected materials towards optimal tissue support
Natural materials exhibit compelling functionalities owing to their irregular architectures, but the study on irregular architected materials is elusive. Here the authors report a generative computational framework to virtually grow irregular materials with optimized properties that match target stress distributions, facilitating tissue support for orthopedic femur restoration.
- Yingqi Jia
- , Ke Liu
- & Xiaojia Shelly Zhang
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Article
| Open AccessLightweight and drift-free magnetically actuated millirobots via asymmetric laser-induced graphene
Millirobots effective application generally depends on cost, scalability, efficient locomotion, and the ability to track target trajectory precisely. Here, authors demonstrate promising graphene-based helical millirobots by introducing asymmetric light pattern distortion to a laser-induced graphene process.
- Yun Chen
- , Yuanhui Guo
- & Ni Zhao
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Article
| Open AccessPd(II)/Pd(IV) redox shuttle to suppress vacancy defects at grain boundaries for efficient kesterite solar cells
Charge loss at grain boundaries of kesterite polycrystalline absorbers limits the performance of thin film solar cells. Here, authors report the use of Pd(II)/Pd(IV) redox shuttle to assist the capture and exchange of Se atoms and eliminate vacancy defects, realizing certified efficiency of 14.3%.
- Jinlin Wang
- , Jiangjian Shi
- & Qingbo Meng
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Article
| Open AccessCell-free biosynthesis and engineering of ribosomally synthesized lanthipeptides
Ribosomally synthesized and post-translationally modified peptides (RiPPs) are a major class of natural products with potent biological activities but a vast majority of RiPP gene clusters remain unexplored in microbial genomes. Here, the authors report a unified biocatalysis (UniBioCat) system based on cell-free gene expression for rapid biosynthesis and engineering of RiPPs.
- Wan-Qiu Liu
- , Xiangyang Ji
- & Jian Li
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Article
| Open AccessLaCl3-based sodium halide solid electrolytes with high ionic conductivity for all-solid-state batteries
The advancement of sodium halide solid-state electrolytes can propel high-energy-density all-solid-state sodium-ion batteries. Here, the authors present a LaCl3-based electrolyte facilitating rapid Na+ ion conduction along the c-axis diffusion channel, ensuring high capacity even at elevated current densities.
- Chengyu Fu
- , Yifan Li
- & Hongfa Xiang
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Article
| Open AccessFiring feature-driven neural circuits with scalable memristive neurons for robotic obstacle avoidance
The authors proposed a strategy for sensorimotor control using memristive H-H neurons, integrating bio-inspired neural circuits and computational capabilities of neurons’ firing features with a robot for avoidance control.
- Yue Yang
- , Fangduo Zhu
- & Ming Liu
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Article
| Open AccessUncovering the spin ordering in magic-angle graphene via edge state equilibration
The hierarchy of symmetry breaking in magic-angle twisted bilayer graphene remains a topic of intense fundamental study. Here, the authors determine the spin polarization of symmetry-broken quantum Hall states and Chern insulators in MATBG using a twist-decoupled graphene probe.
- Jesse C. Hoke
- , Yifan Li
- & Benjamin E. Feldman
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Article
| Open AccessHighly reversible zinc metal anode enabled by strong Brønsted acid and hydrophobic interfacial chemistry
Trace amounts of strong acid can suppress Zn corrosion and promote uniform Zn deposition. Here, the authors use HTFSI to create a hydrophobic micro-environment at the Zn-electrolyte interface, enabling high efficiency and cycling stability.
- Qingshun Nian
- , Xuan Luo
- & Xiaodi Ren
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Article
| Open AccessPhysics-informed neural network for lithium-ion battery degradation stable modeling and prognosis
Reliable lithium-ion battery health assessment is vital for safety. Here, authors present a physics-informed neural network for accurate and stable state-of-health estimation, overcoming challenges of varied battery types and usage conditions.
- Fujin Wang
- , Zhi Zhai
- & Xuefeng Chen
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Article
| Open AccessDigital non-Foster-inspired electronics for broadband impedance matching
Resonance-based systems such as electroacoustic transducers are often limited by narrow bandwidth. Here, authors report a digital non-Foster inspired circuit demonstrating significant bandwidth and power level enhancement with greater reconfigurability than conventional analog non-Foster approaches.
- Xin Yang
- , Zhihe Zhang
- & Andrea Alù
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Article
| Open AccessMassive, long-lived electrostatic potentials in a rotating mirror plasma
In open-field-line magnetic plasma traps, the attainable cross-field voltage drops are limited by the tolerances of the solid materials of the vacuum vessel. Here, the authors demonstrate the possibility of equilibria that isolate large voltage drops to the interior of the plasma, circumventing this limit.
- E. J. Kolmes
- , I. E. Ochs
- & N. J. Fisch
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Article
| Open AccessSuperlative mechanical energy absorbing efficiency discovered through self-driving lab-human partnership
It is challenging to design tough structures based on energy absorbing efficiency owing to the difficulties in modeling non-linear deformation. Here, the authors report a human-monitored self-driving lab and discover structural motifs with high energy absorbing efficiencies up to 75.2%.
- Kelsey L. Snapp
- , Benjamin Verdier
- & Keith A. Brown
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Article
| Open AccessTowards silent and efficient flight by combining bioinspired owl feather serrations with cicada wing geometry
This study unveils a synergistic bioinspired design, seamlessly merging owl feather and cicada wing geometries into propeller configurations. Authors achieve reduction in noise by up to 5.5 dB while boosting aerodynamic efficiency by over 20% compared to current industry standards.
- Zixiao Wei
- , Stanley Wang
- & Grace X. Gu
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Article
| Open AccessExplainable chemical artificial intelligence from accurate machine learning of real-space chemical descriptors
Chemical AI often behaves as a black box, providing accurate, but opaque, predictions. Here, the authors show that the synergy of cutting-edge ANNs with the rigor of Quantum Chemical Topology can result in Explainable Chemical AI (XCAI).
- Miguel Gallegos
- , Valentin Vassilev-Galindo
- & Alexandre Tkatchenko
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Article
| Open AccessA facile synthesis of α,β-unsaturated imines via palladium-catalyzed dehydrogenation
α,β-unsaturated compounds serve as versatile synthons in organic chemistry, but the α,β-desaturation of aliphatic imines is challenging due to easy hydrolysis and preferential dimerization. Herein, the authors report the synthesis of α,β-unsaturated imines by employing a pre-fluorination and palladium-catalyzed dehydrogenation reaction sequence.
- Chunyang Zhao
- , Rongwan Gao
- & Junkai Fu
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Article
| Open AccessActive transcription and epigenetic reactions synergistically regulate meso-scale genomic organization
Chromatin within interphase nuclei forms compacted nanoscale DNA domains of uniform size. By integrating theory and imaging, here the authors show how the interplay between transcription and epigenetic mechanisms determine this size, independent of cell type.
- Aayush Kant
- , Zixian Guo
- & Vivek B. Shenoy
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Article
| Open AccessDiscovery of fungal onoceroid triterpenoids through domainless enzyme-targeted global genome mining
Tang et al. describe the development of a fungal genome mining tool which can be used to identify biosynthetic gene clusters from fungal genomes that lack detectable protein domains and demonstrate its functionality.
- Jia Tang
- & Yudai Matsuda
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Article
| Open AccessNon-coplanar helimagnetism in the layered van-der-Waals metal DyTe3
Helimagnetic materials host a twisted magnetic texture, realizing screws, cycloids, and cones. While helimagnets are common in three dimensional materials, layered van der Waals helimagnets are exceedingly rare. Here, Akatsuka et al. demonstrate conical ordering in the easily cleavable magnet DyTe3.
- Shun Akatsuka
- , Sebastian Esser
- & Max Hirschberger
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Article
| Open Access“Ion-imprinting” strategy towards metal sulfide scavenger enables the highly selective capture of radiocesium
Selective capture of radiocaesium is highly challenging in radioactive contamination remediation. Here, authors developed “ion-imprinting” strategy towards metal sulfide scavengers to achieve selective capture of Cs(I) in high-salt environments and successful cleanup of actual 137Cs-liquid-wastes.
- Jun-Hao Tang
- , Shao-Qing Jia
- & Xiao-Ying Huang
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Article
| Open AccessAntiferromagnetic magnonic charge current generation via ultrafast optical excitation
Néel spin-orbit torques arise due to charge currents in some antiferromagnets, and have sparked interest as a possible pathway for achieving electrical control of antiferromagnetic order. While the driving of antiferromagnetic order by Néel spin-orbit torques is now experimentally well established, the inverse process, where magnetic excitations in an antiferromagnetic drive a charge current is not reported. Here Huang, Liao, Qiu, and coauthors observe this inverse process in an Mn2Au thin film.
- Lin Huang
- , Liyang Liao
- & Cheng Song
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Article
| Open AccessConcentration-induced spontaneous polymerization of protic ionic liquids for efficient in situ adhesion
Adhesives require a balance between cohesion and interfacial adhesion, which can be challenging to achieve. Here the authors report the polymerisation of a protic ionic liquid-based monomer, with internal and external non-covalent interactions contributing to both cohesion and adhesion.
- Jun Zhang
- , Xuan Zhou
- & Shiguo Zhang
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Article
| Open AccessBright and durable scintillation from colloidal quantum shells
Traditional scintillators face challenges in achieving fast response and avoiding afterglow. Guzelturk et al. report colloidal quantum shell heterostructures with bright multiexciton emission, enabling efficient, fast, and robust scintillation for high-resolution and high-speed X-ray imaging.
- Burak Guzelturk
- , Benjamin T. Diroll
- & Mikhail Zamkov
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Article
| Open AccessBounds to electron spin qubit variability for scalable CMOS architectures
Understanding the microscopic variability of CMOS spin qubits is crucial for developing scalable quantum processors. Here the authors report a combined experimental and numerical study of the effect of interface roughness on variability of quantum dot spin qubits formed at the Si/SiO2 interface.
- Jesús D. Cifuentes
- , Tuomo Tanttu
- & Andre Saraiva
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Article
| Open AccessA delayed 400 GeV photon from GRB 221009A and implication on the intergalactic magnetic field
Gamma ray bursts (GRBs) are transient events and GRB 221009A was a particularly interesting event due to its brightness and duration. Here, the authors show detection of delayed 400 GeV photon from GRB 221009A, which may indicate cascade emission scenario.
- Zi-Qing Xia
- , Yun Wang
- & Yi-Zhong Fan
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Article
| Open AccessThe role of microstructure in the thermal fatigue of solder joints
Thermal fatigue frequently leads to failure in electronic solder joints. Here, the authors measure and quantitatively explain how microstructure affects thermal fatigue in a ball grid array package and propose optimum microstructures for thermal fatigue resistance.
- J. W. Xian
- , Y. L. Xu
- & C. M. Gourlay
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Article
| Open AccessThermoelectric active cooling for transient hot spots in microprocessors
The authors model the transient temperature response of micro-thermoelectric devices with AC current applied, which is locally integrated under a transient hot spot. They develop a strategy for actively canceling the transient temperature variations.
- Yihan Liu
- , Hao-Yuan Cheng
- & Feng Xiong
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Article
| Open AccessEmergent ribozyme behaviors in oxychlorine brines indicate a unique niche for molecular evolution on Mars
Mars, an attractive candidate for potential presence of extraterrestrial life, contains oxychlorine species such as perchlorate at its surface. Here, the authors show perchlorate brines support folding and catalysis of functional RNAs, while inactivating representative protein enzymes, and that perchlorate enables new ribozyme functions, including ribozyme catalyzed chlorination of organic molecules.
- Tanner G. Hoog
- , Matthew R. Pawlak
- & Aaron E. Engelhart
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Article
| Open AccessMedical history predicts phenome-wide disease onset and enables the rapid response to emerging health threats
Preventive interventions often require strategies to identify high-risk individuals. Here, the authors illustrate the potential utility of medical history in predicting the onset risk for thousands of diseases across clinical specialties including COVID-19.
- Jakob Steinfeldt
- , Benjamin Wild
- & Roland Eils
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Article
| Open AccessRevealing trends and persistent cycles of non-autonomous systems with autonomous operator-theoretic techniques
Data-driven detection of governing rules and trends in dynamics of nonautonomous systems usually requires a significant amount of measured data. The authors propose an operator-theoretic technique for identifying trends and persistent cycles using data from a single measured trajectory, relevant for the analysis of climate dynamics.
- Gary Froyland
- , Dimitrios Giannakis
- & Joanna Slawinska
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Article
| Open AccessAtomically dispersed Iridium on Mo2C as an efficient and stable alkaline hydrogen oxidation reaction catalyst
High-performance hydroxide exchange membrane fuel cells rely on the anode loading of platinum-group metals. Here, the authors report a highly active hydrogen oxidation electrocatalyst which contains atomically dispersed Ir on Mo2C nanoparticles supported on a carbon substrate.
- Jinjie Fang
- , Haiyong Wang
- & Zhongbin Zhuang