Article 24 February 2024 | Open Access Pore evolution mechanisms during directed energy deposition additive manufacturing Porosity is a key issue in additive manufacturing (AM). Here, the authors reveal the bubble evolution mechanisms including formation, coalescence, pushing, growth, entrainment, escape, and entrapment during directed energy deposition AM using in situ X-ray imaging and multiphysics modelling. Kai Zhang, Yunhui Chen & Peter D. Lee Article 24 February 2024 | Open Access Elasticity-controlled jamming criticality in soft composite solids Soft composite solids are building blocks for many functional and biological materials, yet it remains challenging to predict their mechanical properties. Zhao et al. propose a criticality framework to connect the mechanics to the critical behaviour near the shear-jamming transition of the dispersed inclusions. Yiqiu Zhao, Haitao Hu & Qin Xu Article 24 February 2024 | Open Access Observation of geometric phase effect through backward angular oscillations in the H + HD → H2 + D reaction In a combined experimental and theoretical study of the H + HD → H2 + D reaction at low collision energy (1.72 eV), the authors obtain detailed information on the quantum reaction dynamics surrounding a conical intersection. Shihao Li, Jiayu Huang & Xueming Yang Article 24 February 2024 | Open Access Transient chemical and structural changes in graphene oxide during ripening Graphene oxide is in demand for various applications - however, this is complicated by changing physicochemical properties over time. Here, the authors show the intrinsic, metastable, and transient states of graphene oxide colloids upon ripening. Hayato Otsuka, Koki Urita & Katsumi Kaneko Article 24 February 2024 | Open Access Self-regulated reversal deformation and locomotion of structurally homogenous hydrogels subjected to constant light illumination Environmentally adaptive hydrogels have great potential as soft robotics but achieving self-regulated reversal shape deformation in homogenous hydrogels under a constant stimulus is challenging. Here, the authors report responsive hydrogels functionalized with two photoswitchable spiropyrans that exhibit self-regulated transient deformation reversal when subjected to constant illumination. Kexin Guo, Xuehan Yang & Chuang Li Article 24 February 2024 | Open Access Creation of a point-of-care therapeutics sensor using protein engineering, electrochemical sensing and electronic integration Low-cost point-of-care sensors are vital for precision medicine. Here, the authors have repurposed a glucometer for breast cancer therapeutic detection capable of sensing tamoxifen in human blood, utilizing blood glucose to power and amplify the therapeutic signals Rong Cai, Chiagoziem Ngwadom & Caroline M. Ajo-Franklin Article 24 February 2024 | Open Access Mechanically interlocked [c2]daisy chain backbone enabling advanced shape-memory polymeric materials Mechanically interlocked structures in polymer backbones can give interesting functionality, but can be challenging to prepare and control. Here, the authors report the development of polymers with a daisy chain unit in the backbone that are capable of shape memory behaviour. Shang-Wu Zhou, Danlei Zhou & Da-Hui Qu Article 24 February 2024 | Open Access Indication of critical scaling in time during the relaxation of an open quantum system The dynamics of a quantum system shows interesting features. Here the authors demonstrate critical scaling in the spin relaxation due to spin-exchange process in a system of impurity Cs atoms immersed in Rb atoms. Ling-Na Wu, Jens Nettersheim & Artur Widera Article 24 February 2024 | Open Access Toward stabilization of formamidinium lead iodide perovskites by defect control and composition engineering The black phase formamidinium lead iodide perovskite (α-FAPbI3) undergoes an undesired transformation to a non-perovskite δ-phase, rendering it inactive. Here authors show the significant role of inherent iodine defects in accelerating phase transition kinetics and exacerbating α-FAPbI3 instability. Yuhang Liang, Feng Li & Rongkun Zheng Article 24 February 2024 | Open Access How to steer active colloids up a vertical wall It has been demonstrated theoretically earlier that a dense phase made of repulsive active particles, in phase-separating regime, exhibit wetting-like behaviors: wall-meniscus or capillary rise in channels. Here authors experimentally investigate a non-phase separating assembly of active colloids under gravity and show that a wetting-like phenomenology persists against a vertical wall, and they evidence a counter-gravity wall climbing. Adérito Fins Carreira, Adam Wysocki & Cécile Cottin-Bizonne Article 24 February 2024 | Open Access High-order sensory processing nanocircuit based on coupled VO2 oscillators It is challenging to create efficient and compact neuromorphic sensory system based on nano-scale nonlinear dynamics. Yang et al. present a capacitance-coupled VO2 oscillatory network, which serves as a continuous-time dynamic system for sensory pre-processing, enabling tasks such as touch and gesture recognition. Ke Yang, Yanghao Wang & Yuchao Yang Article 24 February 2024 | Open Access Intrinsic factors responsible for brittle versus ductile nature of refractory high-entropy alloys Poor ductility is a major drawback of otherwise promising refractory high-entropy alloys (RHEAs) for ultrahigh temperature applications. Here, the authors show how ductility can be enhanced by adding HCP elements to BCC RHEAs, which is a relatively simple way to optimize mechanical properties. Tomohito Tsuru, Shu Han & Haruyuki Inui Article 24 February 2024 | Open Access Coverage enhancement accelerates acidic CO2 electrolysis at ampere-level current with high energy and carbon efficiencies The increased surface coverage of CO2 electroreduction (CO2R) intermediates promotes CO2R at high operating current densities under strongly acidic conditions. Here the authors report a 77.4% single-pass carbon efficiency for conversion of acidic CO2R to pure formic acid. Xiaohan Yu, Yuting Xu & Miao Zhong Article 24 February 2024 | Open Access Vestigial singlet pairing in a fluctuating magnetic triplet superconductor and its implications for graphene superlattices P. Poduval et al. theoretically study the nonzero-temperature vestigial phases of a 2D model exhibiting both triplet superconductivity and magnetism. They show that this model allows for a unique superconducting state in which the condensate consists of entities with three electrons and one hole, with properties similar to those seen in experiments on moiré systems. Prathyush P. Poduval & Mathias S. Scheurer Article 24 February 2024 | Open Access Single-molecule RNA sizing enables quantitative analysis of alternative transcription termination The development of RNA technologies demands accurate assessment of transcript size and heterogeneity. Here, authors report a nanopore-based approach to study full-length RNA transcripts at the single-molecule level, identify premature transcription termination and study rolling-circle transcription. Gerardo Patiño-Guillén, Jovan Pešović & Ulrich Felix Keyser Article 23 February 2024 | Open Access Anomalously bright single-molecule upconversion electroluminescence The efficiency of upconversion electroluminescence remains very low for single-molecule emitters. Here, the authors report over one order of magnitude improvement in the emission efficiency via engineering energy-level alignments for triplet relayed upconversion involving only carrier injection. Yang Luo, Fan-Fang Kong & Zhen-Chao Dong Article 23 February 2024 | Open Access Practical high-dimensional quantum key distribution protocol over deployed multicore fiber High-dimensional QKD would in principle allow for several advantages over its bidimensional counterpart, but in-the-field demonstrations are missing. Here, the authors realise 4- dimensional hybrid time-path-encoded QKD using a 52-km deployed multicore fiber link. Mujtaba Zahidy, Domenico Ribezzo & Davide Bacco Article 23 February 2024 | Open Access Strong interactions between solitons and background light in Brillouin-Kerr microcombs Here the authors demonstrate a strong interaction between the generated solitons and background light in a Brillouin-Kerr microcomb system. Based on this unique physical mechanism, they achieve a monostable single soliton microcomb and a turnkey single-soliton microcomb without employing any optical/electrical control or feedback. Menghua Zhang, Shulin Ding & Xiaoshun Jiang Article 23 February 2024 | Open Access Broadband thermal imaging using meta-optics Exploring the miniaturization of imaging systems, researchers use inverse-design for broadband meta-optics in the LWIR spectrum. Here, authors achieve a six-fold Strehl ratio improvement in image quality over conventional metalenses using a novel design and computational techniques. Luocheng Huang, Zheyi Han & Arka Majumdar Article 23 February 2024 | Open Access Efficient direct repairing of lithium- and manganese-rich cathodes by concentrated solar radiation Rapid capacity decay and voltage drop hinder lithium- and manganese-rich cathode material (LMRO) development. Here, the authors apply concentrated solar radiation arrays on cycled LMRO electrodes, inducing inverse spinel phase to boost redox activity and reversibility, yielding enhanced electrochemical performance. Hailong Wang, Xin Geng & Xin He Article 23 February 2024 | Open Access In situ modulating coordination fields of single-atom cobalt catalyst for enhanced oxygen reduction reaction The electrochemical oxygen reduction reaction plays an important role in new energy technologies such as fuel cells and metal-air batteries. Here the authors present a cobalt catalyst with a symmetry-broken Cl−Co−N4 moiety capable of dynamically modulating electron occupancy at active sites during practical reaction conditions to optimize oxygen reduction performance. Meihuan Liu, Jing Zhang & Qinghua Liu Article 23 February 2024 | Open Access Protective effects of Pt-N-C single-atom nanozymes against myocardial ischemia-reperfusion injury Nanozymes can be used for targeting reactive oxygen species (ROS) to alleviate myocardial ischemia/reperfusion (I/R) injury, but hindered by catalytic performance and toxicity concerns. Here the authors report multienzyme-mimicking and biocompatible Pt-NC single-atom nanozymes as an efficient ROS decomposer for restoring cellular homeostasis and mitigating apoptotic progression after I/R injury. Tianbao Ye, Cheng Chen & Chengxing Shen Article 23 February 2024 | Open Access Phonon promoted charge density wave in topological kagome metal ScV6Sn6 The mechanism of charge density wave order in V-based kagome metals has been debated. Here the authors use a range of experimental techniques combined with ab initio calculations to study the electronic structure and phonon modes of ScV6Sn6, revealing the dominant role of strong electron-phonon coupling. Yong Hu, Junzhang Ma & Ming Shi Article 23 February 2024 | Open Access Real-time two-axis control of a spin qubit Real-time adaptive control of a qubit has been demonstrated but limited to single-axis Hamiltonian estimation. Here the authors implement two-axis control of a singlet-triplet spin qubit with two fluctuating Hamiltonian parameters, resulting in improved quality of coherent oscillations. Fabrizio Berritta, Torbjørn Rasmussen & Ferdinand KuemmethArticle 23 February 2024 | Open Access Insights into structural defect formation in individual InP/ZnSe/ZnS quantum dots under UV oxidation InP/ZnSe/ZnS quantum dots (QDs) are promising candidates for advanced light-emitting diodes, but low emission efficiency due to oxidation hampers applications. Here, the authors provide insight into the structural defects that form on individual QDs during UV-facilitated oxidation. Hayeon Baek, Sungsu Kang & Jungwon Park Article 23 February 2024 | Open Access Mechanistic exploration of polytetrafluoroethylene thermal plasma gasification through multiscale simulation coupled with experimental validation PTFE waste, a growing ecological concern, urges the exploration of disposal methods. This study investigates PTFE’s plasma gasification, revealing POCD (oxygen) and FHD (steam) pathways. Experiments validate the above mechanism, showing an 80.12% fluorine recovery in 5 min under optimal conditions. Chu Chu, Long Long Ma & Guanyi Chen Article 23 February 2024 | Open Access Virtual histological staining of unlabeled autopsy tissue Conventional staining of post-mortem samples can be affected by several factors, including tissue autolysis. Here, the authors demonstrate a virtual staining tool using a trained neural network to turn autofluorescence images of label-free autopsy tissue into brightfield equivalent images. Yuzhu Li, Nir Pillar & Aydogan Ozcan Article 23 February 2024 | Open Access Autonomous error correction of a single logical qubit using two transmons Autonomous quantum error correction protects quantum systems against decoherence through engineered dissipation. Here the authors introduce the Star code, which actively corrects single-photon loss and passively suppresses low-frequency dephasing and implement it in a two-transmon device. Ziqian Li, Tanay Roy & David I. Schuster Article 23 February 2024 | Open Access Liquid metal-embraced photoactive films for artificial photosynthesis The practical applications of photoelectrochemical water splitting pivot on significant advances that enable scalable production of robust photoactive films. Here, the authors propose a proof-of-concept for fabricating bioinspired robust photoactive films by a particle implanting technique, which embeds semiconductor photoabsorbers in the liquid metal. Chao Zhen, Xiangtao Chen & Gang Liu Article 23 February 2024 | Open Access Targeted delivery of Fc-fused PD-L1 for effective management of acute and chronic colitis Triggering the PD-1/PD-L1 immune checkpoint is an attractive therapeutic approach in inflammatory bowel disease, and PD-L1, conjugated to the Fc part of an immunoglobulin (PD-L1-Fc) has been shown to be effective in mouse models. Here authors show that fusing to reactive oxygen species (ROS)-responsive nanoparticles improves effect of PD-L1-Fc due to targeting to inflammation sites, while systemic toxicity is reduced. Xudong Tang, Yangyang Shang & Lei Chen Article 23 February 2024 | Open Access Motility of an autonomous protein-based artificial motor that operates via a burnt-bridge principle Inspired by biology, great progress has been made in creating artificial molecular motors. Here the authors report the synthesis and characterization of the Lawnmower, an autonomous, protein-based artificial molecular motor and show their design is capable of track-guided motion. Chapin S. Korosec, Ivan N. Unksov & Nancy R. Forde Article 22 February 2024 | Open Access Ultrasound-activated piezo-hot carriers trigger tandem catalysis coordinating cuproptosis-like bacterial death against implant infections Implantation-associated infections often lead to infections. Here, the authors propose a piezo-based nanoreactor to achieve US-excited tandem catalysis, endowing the polyetherketoneketone bone scaffold with on-demand antibacterial and osteogenic capacities. Yanli Huang, Xufeng Wan & Duan Wang Article 22 February 2024 | Open Access Direct in-situ insights into the asymmetric surface reconstruction of rutile TiO2 (110) The reconstruction of rutile TiO2 (110) impacts its surface chemistry and catalytic properties. Here, the authors offer a detailed understanding of the asymmetric surface reconstruction of TiO2 (110)-(1×2) through a combination of STEM and DFT calculations. Wentao Yuan, Bingwei Chen & Yong Wang Article 22 February 2024 | Open Access Non-volatile rippled-assisted optoelectronic array for all-day motion detection and recognition The authors create a rippled-assisted optoelectronic array (18 × 18 pixels) for the all-day motion detection and recognition, possessing negative and positive optical detection as well as memory and computation capabilities. Xingchen Pang, Yang Wang & Peng Zhou Article 22 February 2024 | Open Access Ultrasmall metal alloy nanozymes mimicking neutrophil enzymatic cascades for tumor catalytic therapy Emulating the killing function of neutrophils, which involves the enzymatic cascade of superoxide dismutase (SOD) and myeloperoxidase (MPO), is promising for cancer therapy, but developing SOD-MPO cascade in one nanozyme is challenging. Here the authors report ultrasmall AuPd alloy nanozymes that mimic neutrophil enzymatic cascades for catalytic treatment of tumors. Xiangqin Meng, Huizhen Fan & Kelong Fan Article 22 February 2024 | Open Access Unveiling the nature of Pt-induced anti-deactivation of Ru for alkaline hydrogen oxidation reaction Despite the high intrinsic activity of Ru for hydrogen oxidation reaction, the surface oxidation-induced deactivation limits the application. Here, the authors report the introduction of Pt atoms could prevent the surface oxidation-related interfacial water network damage, preventing the deactivation of Ru. Yanyan Fang, Cong Wei & Gongming Wang Article 22 February 2024 | Open Access Nonlinear spin-orbit coupling in optical thin films Spin-orbit interaction, and the associated phenomena, is commonly observed in crystalline structure pumped with circularly polarised beam. Here, the authors showed that this is not the case, and used nonlinear thin film to produce vortex beams of second-harmonic light. Domenico de Ceglia, Laure Coudrat & Costantino De Angelis Article 22 February 2024 | Open Access Black phosphorus boosts wet-tissue adhesion of composite patches by enhancing water absorption and mechanical properties The utility of wet-tissue adhesives has been impeded by the suboptimal adhesive strength. Here the authors report a composite patch integrated with BP nanosheets that improve the wet-tissue adhesion by enhancing the water absorption and mechanical properties of the patch and demonstrate the uses of the patch in hemostasis, physical-activity monitoring and tumour-recurrence prevention. Yuanchi Zhang, Cairong Li & Yuxiao Lai Article 22 February 2024 | Open Access Computational design of ultra-robust strain sensors for soft robot perception and autonomy Due to the deformable nature of soft robots, developing robust sensors that can sustain stability and performance is a challenge. Here, the authors report a computational strain sensor design based on a programmed crack array for predictable, tunable, and stable sensing performance. Haitao Yang, Shuo Ding & Ghim Wei Ho Article 22 February 2024 | Open Access Vision-driven metasurfaces for perception enhancement Authors showcase a framework for visual perception enhancement system based on vision-driven metasurfaces. It can help humans obtain information in multiple frequency bands and allows the metasurface platform with more interesting functions. Tianshuo Qiu, Qiang An & Shaobo Qu Article 22 February 2024 | Open Access Hyperbolic photonic topological insulators Here the authors develop a coupled ring resonators platform for realizing topological states of matter with hyperbolic dispersion thus offering an approach to boost the efficiency of topological photonic devices. Lei Huang, Lu He & Xiangdong Zhang Article 21 February 2024 | Open Access Swept coded aperture real-time femtophotography The researchers showcase swept-coded aperture real-time femtophotography—an all-optical single-shot computational imaging modality at up to 156.3 trillion frames per second—video-records transient absorption in a semiconductor and ultrafast demagnetization of a metal alloy. Jingdan Liu, Miguel Marquez & Jinyang Liang Article 21 February 2024 | Open Access Photocured room temperature phosphorescent materials from lignosulfonate It is elusive to manufacture room temperature phosphorescent (RTP) materials through effective and ambient processing approaches. Here the authors report the production of photocured RTP materials using lignosulfonate to act as RTP chromophore and photoinitiator, achieving easy preparation, low cost and good performance. Hongda Guo, Mengnan Cao & Zhijun Chen Article 21 February 2024 | Open Access Smart touchless human–machine interaction based on crystalline porous cages Smart sensors are important components in the development of touchless human-machine interaction systems. Here, the authors describe a smart 3D porous crystalline organic cage-based system that exhibits remarkable responsiveness to fingertip humidity, contributing to the advancement of touchless human-machine interaction technology. Jinrong Wang, Weibin Lin & Niveen M. Khashab Article 21 February 2024 | Open Access Ultrathin, ultralight dual-scale fibrous networks with high-infrared transmittance for high-performance, comfortable and sustainable PM0.3 filter Development of high-performance, comfortable and sustainable air filters is challenging. Here, authors design an ultrathin, ultralight dual scale fiber mat composed of true nanofibers and submicron-fibers to integrate the high protection, thermal wet comfort and save raw materials. Yuchen Yang, Xiangshun Li & Yuekun Lai Article 21 February 2024 | Open Access Elastic properties and tensile strength of 2D Ti3C2Tx MXene monolayers The Young’s modulus of the MXene Ti3C2Tx, theoretically predicted to be 0.502 TPa, has not yet been experimentally confirmed. This work supplants previous reports using nanoindentation with the correctly measured Young’s modulus of 0.484 ± 0.013 TPa. Chao Rong, Ting Su & Fu-Zhen Xuan Article 21 February 2024 | Open Access Tunable afterglow for mechanical self-monitoring 3D printing structures Organic afterglow materials have potential in self-monitoring applications but it is challenging to design materials with desired properties. Here, the authors report the development of a lifetime tunable organic afterglow system for use in mechanical self-monitoring 3D printed structures. Rongjuan Huang, Yunfei He & Wei Huang Article 21 February 2024 | Open Access 4D printed hydrogel scaffold with swelling-stiffening properties and programmable deformation for minimally invasive implantation 3D printing has potential in designing personalised scaffolds, but minimally invasive implantation is still challenging. Here, the authors report the development of a polyurethane material with temperature triggered shape memory and water triggered deformation that allows for transcatheter delivery. Bo Liu, Hui Li & Xiaoli Zhao Article 21 February 2024 | Open Access Iterative design of training data to control intricate enzymatic reaction networks Kinetic modeling of in vitro enzymatic reaction networks (ERNs) is severely hampered by the lack of training data. Here, authors introduce a methodology that combines an active learning-like approach and flow chemistry to create optimized datasets for an intricate ERN. Bob van Sluijs, Tao Zhou & Wilhelm T. S. Huck Article 21 February 2024 | Open Access Measuring entanglement entropy and its topological signature for phononic systems Entanglement entropy exhibits rich phenomenology connected to different kinds of phases in condensed matter. Here, the authors confirm some of these predictions by experimentally probing nonlocal correlations in 1D and 2D phononic crystal based on interconnected resonating acoustic cavities. Zhi-Kang Lin, Yao Zhou & Jian-Hua Jiang Article 21 February 2024 | Open Access Non-orthogonal optical multiplexing empowered by deep learning Authors showcase that non-orthogonal optical multiplexing can be achieved over a multimode fiber utilizing deep learning, where information encoded in non-orthogonal input channels even with the same polarization, wavelength, and spatial region can be demultiplexed with high accuracy. Tuqiang Pan, Jianwei Ye & Yuwen Qin Article 21 February 2024 | Open Access Dynamic X-ray imaging with screen-printed perovskite CMOS array Biomedical X-ray imaging requires high spatial and temporal resolution of the detectors. Liu et al. report a screen-printed perovskite direct-conversion X-ray CMOS imager with a spatial resolution of 5 lp mm−1 and a speed of 300 fps for low-dose 2D radiography and 3D computed tomography imaging. Yanliang Liu, Chaosong Gao & Yongshuai Ge Article 21 February 2024 | Open Access Unraveling the role of vaporization momentum in self-jumping dynamics of freezing supercooled droplets at reduced pressures The momentum transport dynamics of a vaporizing droplet under low pressures remain undiscovered. Here authors report the vaporization momentum resulting from the intensive vaporization on the free surface of the water droplet contributes to the self-detachment of freezing droplets. Xiao Yan, Samuel C. Y. Au & Shuhuai Yao Article 21 February 2024 | Open Access General synthesis and atomic arrangement identification of ordered Bi–Pd intermetallics with tunable electrocatalytic CO2 reduction selectivity Precise synthesis of Intermetallic compounds and understanding of the structure-performance correlation are highly desirable in catalysis. Here, the authors develop a general method to synthesize up to six BiPd intermetallic compounds and study the mechanism toward the electrocatalytic carbon dioxide reduction reaction. Wenjin Guo, Guangfang Li & Rong Chen Article 21 February 2024 | Open Access A hybrid transistor with transcriptionally controlled computation and plasticity Interfacing living systems with electronics for biosensing and biocomputing applications is challenging. Here, Gao et al. present hybrid transistors with electroactive bacteria capable of extracellular electron transfer, enabling transduction of biological computations to electrical readouts. Yang Gao, Yuchen Zhou & Benjamin K. Keitz Article 21 February 2024 | Open Access Spontaneous crystallization of strongly confined CsSnxPb1-xI3 perovskite colloidal quantum dots at room temperature Photoactive pure-iodine all-inorganic colloidal perovskite quantum dots (QDs) are attractive for optoelectronic applications, however their synthesis at room temperature is challenging. Here the authors report a room temperature strongly confined strategy to synthesize CsSnxPb1-xI3 QDs. Louwen Zhang, Hai Zhou & Guojia Fang Article 21 February 2024 | Open Access Superexchange-stabilized long-distance Cu sites in rock-salt-ordered double perovskite oxides for CO2 electromethanation Cu-oxide-based catalysts are promising for CO2 electromethanation but suffer from inevitable reduction and structural collapse. Here the authors report a Cu-based rock-salt-ordered double perovskite oxide with superexchange-stabilized long-distance Cu sites for efficient and stable CO2 methanation. Jiawei Zhu, Yu Zhang & Heqing Jiang Article 21 February 2024 | Open Access Large language models streamline automated machine learning for clinical studies A knowledge gap persists between machine learning developers and clinicians. Here, the authors show that the Advanced Data Analysis extension of ChatGPT could bridge this gap and simplify complex data analyses, making them more accessible to clinicians. Soroosh Tayebi Arasteh, Tianyu Han & Sven Nebelung Article 21 February 2024 | Open Access The reverse quantum limit and its implications for unconventional quantum oscillations in YbB12 Metallic systems in magnetic fields enter the quantum limit when the cyclotron energy exceeds the Fermi energy. Here the authors introduce the analogue of the quantum limit for insulators, where the Zeeman energy exceeds the cyclotron energy, and show that it explains key features of the Kondo insulator YbB12. Christopher A. Mizzi, Satya K. Kushwaha & Neil Harrison Article 21 February 2024 | Open Access Chiral and flat-band magnetic quasiparticles in ferromagnetic and metallic kagome layers S. X. M. Riberolles et al. study the kagome Chern insulator TbMn6Sn6 via inelastic neutron scattering. They observe signatures of chiral and flat-band magnons, which are highly localized in real space and strongly damped in the time domain. S. X. M. Riberolles, Tyler J. Slade & R. J. McQueeney Article 21 February 2024 | Open Access Large dynamics of a phase separating arginine-glycine-rich domain revealed via nuclear and electron spins The authors show the RNA-induced droplet formation by a component of Cajal bodies and reveal the large nanoseconds mobility of glycine residues inside droplets as a molecular factor potentially contributing to the large dynamics of Cajal bodies. Giuseppe Sicoli, Daniel Sieme & Nasrollah Rezaei-Ghaleh Article 21 February 2024 | Open Access Integrating single-cell and spatially resolved transcriptomic strategies to survey the astrocyte response to stroke in male mice Astrocytes adopt diverse states in response to brain injuries. Here, the authors develop a platform for spatially resolved, single-cell transcriptomics and proteomics, called tDISCO (tissue-digital microfluidic isolation of single cells for -Omics) to uncover the spatial boundaries of molecularly distinct reactive astrocyte populations in stroke. Erica Y. Scott, Nickie Safarian & Maryam Faiz Article 21 February 2024 | Open Access Extracting accurate materials data from research papers with conversational language models and prompt engineering Efficient data extraction from research papers accelerates science and engineering. Here, the authors develop an automated approach which uses conversational large language models to achieve high precision and recall in extracting materials data. Maciej P. Polak & Dane Morgan