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  • Regenerated isotropic wood
    Natl. Sci. Rev. (IF 16.693) Pub Date : 2020-09-19
    Qing-Fang Guan; Zi-Meng Han; Huai-Bin Yang; Zhang-Chi Ling; Shu-Hong Yu

    Constructing sustainable high-performance structural materials is a core part of the key global sustainability goal. Variety of efforts have been made in this field, however, challenges remain on how to lower the cost by using all-green basic building blocks and improve its mechanical properties to meet the demand of practical applications. Here, we report a robust and efficient bottom-up strategy

    更新日期:2020-09-20
  • A direct measurement method of quantum relaxation time
    Natl. Sci. Rev. (IF 16.693) Pub Date : 2020-09-18
    Peng Zhang; Haoqi Tang; Chuanchuan Gu; Hong Wang; Guangfu Luo; Yalin Lu; X-D Xiang

    Quantum relaxation time of electrons in condensed matters is the most important physical property while its direct measurement has been elusive for a century. Here, we report a breakthrough that allows us to directly determine quantum relaxation time at zero and non-zero frequencies using optical measurement. Through dielectric loss function, we connect bound electron effect to the physical parameters

    更新日期:2020-09-20
  • Controlled direct synthesis of single- to multiple-layer MWW zeolite
    Natl. Sci. Rev. (IF 16.693) Pub Date : 2020-09-14
    Jie-Qiong Chen; Yu-Zhao Li; Qing-Qing Hao; Huiyong Chen; Zhao-Tie Liu; Chengyi Dai; Jianbo Zhang; Xiaoxun Ma; Zhong-Wen Liu

    The minimized diffusion limitation and completely exposed strong acid sites of the ultrathin zeolites make it an industrially important catalyst especially for converting bulky molecules. However, the structure-controlled and large-scale synthesis of the material is still a challenge. In this work, the direct synthesis of the single-layer MWW zeolite was demonstrated by using hexamethyleneimine and

    更新日期:2020-09-14
  • Integration of Bio-inspired lanthanide-transition metal cluster and P-doped carbon nitride for efficient photocatalytic overall water splitting
    Natl. Sci. Rev. (IF 16.693) Pub Date : 2020-09-14
    Rong Chen; Gui-Lin Zhuang; Zhi-Ye Wang; Yi-Jing Gao; Zhe Li; Cheng Wang; Yang Zhou; Ming-Hao Du; Suyuan Zeng; La-Sheng Long; Xiang-Jian Kong; Lan-Sun Zheng

    Photosynthesis in nature uses the Mn4CaO5 cluster as the oxygen-evolving center to catalyze the water oxidation efficiently in photosystem II (PS II). Herein, we demonstrate a bio-inspired heterometallic cluster LnCo3 (Ln = Nd, Eu and Ce) clusters, which can be viewed as synthetic analogs of CaMn4O5 cluster. Anchoring LnCo3 on phosphorus-doped graphitic carbon nitrides (PCN) shows efficient overall

    更新日期:2020-09-14
  • Mars exploration on the move
    Natl. Sci. Rev. (IF 16.693) Pub Date : 2020-09-12
    Mu-ming Poo

    While the world is still struggling to overcome the COVID-19 pandemic, a new round of Mars exploration proceeded as planned, catching the July–August 2020 window of Earth–Mars close proximity that occurs once every 26 months. The excitement began with United Arab Emirates’ launch of the Hope orbiter on 19 July, followed by China's launch of the Tianwen 1 (天问一号) explorer on 23 July, and NASA’s launch

    更新日期:2020-09-13
  • Tiny noise, big mistakes: adversarial perturbations induce errors in Brain-Computer Interface spellers
    Natl. Sci. Rev. (IF 16.693) Pub Date : 2020-09-10
    Xiao Zhang; Dongrui Wu; Lieyun Ding; Hanbin Luo; Chin-Teng Lin; Tzyy-Ping Jung; Ricardo Chavarriaga

    An electroencephalogram (EEG) based brain-computer interface (BCI) speller allows a user to input text to a computer by thought. It is particularly useful to severely disabled individuals, e.g., amyotrophic lateral sclerosis patients, who have no other effective means of communication with another person or a computer. Most studies so far focused on making EEG-based BCI spellers faster and more reliable;

    更新日期:2020-09-11
  • A multiaxial lead-free two-dimensional organic-inorganic perovskite ferroelectric
    Natl. Sci. Rev. (IF 16.693) Pub Date : 2020-09-08
    Chao-Ran Huang; Xuzhong Luo; Xiao-Gang Chen; Xian-Jiang Song; Zhi-Xu Zhang; Ren-Gen Xiong

    Two-dimensional (2D) hybrid organic-inorganic perovskites (HOIPs) have recently gained tremendous interest because of their unique features in contrast to the three-dimensional counterparts and the traditional 2D materials. However, although some 2D HOIP ferroelectrics have been achieved, the issue of toxic Pb and the uniaxial nature impede their further application. Herein, for the first time, we

    更新日期:2020-09-08
  • Reinvigorating the Wiener-Hopf technique in the pursuit to understand processes and materials
    Natl. Sci. Rev. (IF 16.693) Pub Date : 2020-09-08
    I D Abrahams; X Huang; A Kisil; G Mishuris; M Nieves; S Rogosin; I Spitkovsky

    This perspective originated during the Isaac Newton Institute for Mathematical Sciences research programme “Bringing pure and applied analysis together via the Wiener-Hopf technique, its generalisations and applications (WHT)”. It fuelled intensive discussions on current pure and applied mathematical challenges of the Wiener-Hopf technique, driven by its impact on real-world problems.

    更新日期:2020-09-08
  • Light-driven directional ion transport for enhanced osmotic energy harvesting
    Natl. Sci. Rev. (IF 16.693) Pub Date : 2020-09-08
    Kai Xiao; Paolo Giusto; Fengxiang Chen; Ruotian Chen; Tobias Heil; Shaowen Cao; Lu Chen; Fengtao Fan; Lei Jiang

    Light-driven ion (proton) transport is a crucial process both for photosynthesis of green plants and solar energy harvesting of some archaea. Here, we describe that TiO2/C3N4 semiconductor heterojunction nanotube membrane can realize a similar light-driven directional ion transport performance as biological systems. This heterojunction system can be fabricated by two simple deposition steps. Under

    更新日期:2020-09-08
  • All-optical attosecond time domain interferometry
    Natl. Sci. Rev. (IF 16.693) Pub Date : 2020-09-04
    Zhen Yang; Wei Cao; Yunlong Mo; Huiyao Xu; Kang Mi; Pengfei Lan; Qingbin Zhang; Peixiang Lu

    Interferometry, a key technique in modern precision measurements, has been used for length measurement in engineering metrology and astronomy. An analogous time-domain interferometric technique would represent a significant complement to spatial domain applications and require the manipulation of interference on extreme time and energy scales. Here, we report an all-optical interferometer using laser-driven

    更新日期:2020-09-05
  • A virtual sequencer reveals the dephasing patterns in error-correction code DNA sequencing
    Natl. Sci. Rev. (IF 16.693) Pub Date : 2020-09-03
    Wenxiong Zhou; Li Kang; Haifeng Duan; Shuo Qiao; Louis Tao; Zitian Chen; Yanyi Huang

    An error-correction code (ECC) sequencing approach has recently been reported to effectively reduce sequencing errors by interrogating a DNA fragment with three orthogonal degenerate sequencing-by-synthesis (SBS) reactions. However, similar to other non-single-molecule SBS methods, the reaction will gradually lose its synchronization within a molecular colony in ECC sequencing. This phenomenon, called

    更新日期:2020-09-03
  • Efficient network immunization under limited knowledge
    Natl. Sci. Rev. (IF 16.693) Pub Date : 2020-09-03
    Yangyang Liu; Hillel Sanhedrai; GaoGao Dong; Louis M Shekhtman; Fan Wang; Sergey V Buldyrev; Shlomo Havlin

    Targeted immunization of centralized nodes in large-scale networks has attracted significant attention. However, in real-world scenarios, knowledge and observations of the network may be limited thereby precluding a full assessment of the optimal nodes to immunize (or quarantine) in order to avoid epidemic spreading such as that of the current COVID-19 epidemic. Here, we study a novel immunization

    更新日期:2020-09-03
  • Precise fabrication of single-atom alloy co-catalyst with optimal charge state for enhanced photocatalysis
    Natl. Sci. Rev. (IF 16.693) Pub Date : 2020-09-03
    Yating Pan; Yunyang Qian; Xusheng Zheng; Sheng-Qi Chu; Yijun Yang; Chunmei Ding; Xi Wang; Shu-Hong Yu; Hai-Long Jiang

    While surface charge state of co-catalysts plays a critical role for boosting photocatalysis, the study on surface charge regulation via their precise structure control, remains extremely rare. Herein, a metal-organic framework (MOF)-stabilized bimetallic Pd@Pt nanoparticles (NPs), which feature adjustable Pt coordination environment and the controlled structure from core-shell to single-atom alloy

    更新日期:2020-09-03
  • Palladium nanoplates scotch breast cancer lung metastasis by constraining epithelial-mesenchymal transition
    Natl. Sci. Rev. (IF 16.693) Pub Date : 2020-09-03
    Shunhao Wang; Jingchao Li; Mei Chen; Liting Ren; Wenya Feng; Lining Xu; Xiaolan Chen; Tian Xia; Nanfeng Zheng; Sijin Liu

    Metastasis accounts for majority of cancer deaths in many tumor types including breast cancer. Epithelial-mesenchymal transition (EMT) is the driving force for the occurrence and progression of metastasis, however, no targeted strategies to block the EMT program are currently available to combat metastasis. Diverse engineered nanomaterials (ENMs) have been reported to exert promising anti-cancer effects

    更新日期:2020-09-03
  • Multi-modal channel cancer chemotherapy by 2D functional gadolinium metal-organic framework
    Natl. Sci. Rev. (IF 16.693) Pub Date : 2020-09-03
    Jiale Xia; Yumeng Xue; Bo Lei; Lingling Xu; Mingzi Sun; Na Li; Hongyang Zhao; Min Wang; Meng Luo; Chao Zhang; Bolong Huang; Yaping Du; Chun-Hua Yan

    Two-dimensional (2D) nanomaterials generally exhibit enhanced physiochemical and biological functions in biomedical applications due to their high surface-to-volume ratio and surface charge. Conventional cancer chemotherapy based on nanomaterials has been hindered by their low drug loading and poor penetration in tumor tissue. To overcome these difficulties, the novel materials systems are urgently

    更新日期:2020-09-03
  • Constructing interfacial potential barrier via a gradient configuration: an effective method to enhance energy-filtering effect
    Natl. Sci. Rev. (IF 16.693) Pub Date : 2020-09-03
    Zizhen Lin; Yinshi Li; Ya-Ling He

    Organic/inorganic hybrids suffer from low power factor (⁠|${S^2}\sigma $|⁠) due to the anticorrelation between Seebeck coefficient (S) and electrical conductivity (⁠|$\sigma $|⁠). Energy-filtering effect becomes a promising way to trade off S and |$\sigma $|⁠. Herein, we propose an effective method that constructs the heterogeneous interfaces containing the gradient potential barrier to greatly enhance

    更新日期:2020-09-03
  • Electronic structures and topological properties in nickelates Lnn + 1NinO2n + 2
    Natl. Sci. Rev. (IF 16.693) Pub Date : 2020-09-02
    Jiacheng Gao; Shiyu Peng; Zhijun Wang; Chen Fang; Hongming Weng

    After the significant discovery of the hole-doped nickelate compound Nd0.8Sr0.2NiO2, an analysis of the electronic structure, orbital components, Fermi surfaces and band topology could be helpful to understand the mechanism of its superconductivity. Based on the first-principles calculations, we find that Ni |$3d_{x^2-y^2}$| states contribute the largest Fermi surface. |$Ln~5d_{3z^2-r^2}$| states form

    更新日期:2020-09-02
  • Anomalous strain effect on the thermal conductivity of low-buckled two-dimensional silicene
    Natl. Sci. Rev. (IF 16.693) Pub Date : 2020-08-31
    Bin Ding; Xiaoyan Li; Wuxing Zhou; Gang Zhang; Huajian Gao

    The thermal conductivity of two-dimensional materials, such as graphene, typically decreases when tensile strain is applied, which softens their phonon modes. Here, we report an anomalous strain effect on the thermal conductivity of monolayer silicene, a representative low-buckled two-dimensional (LB-2D) material. ReaxFF-based molecular dynamics simulations are performed to show that biaxially stretched

    更新日期:2020-09-01
  • Aggregation-induced emission: challenges and opportunities
    Natl. Sci. Rev. (IF 16.693) Pub Date : 2020-08-31
    Wenbo Wu; Bin Liu

    The rapid development of aggregation-induced emission (AIE) has opened new opportunities in many research fields. Herein, we summarized the latest achievements and challenges of AIE with solutions provided to show its great potential.

    更新日期:2020-09-01
  • Development of a space cold atom clock
    Natl. Sci. Rev. (IF 16.693) Pub Date : 2020-08-31
    Wei Ren; Tang Li; Qiuzhi Qu; Bin Wang; Lin Li; Desheng Lü; Weibiao Chen; Liang Liu

    Atomic clocks with cold atoms play important roles in the field of fundamental physics as well as primary frequency standards. Operating such cold-atom clocks in space paves the way for further exploring in fundamental physics, for example dark matter and general relativity. We developed a space cold atom clock (SCAC), which was launched into orbit with the Space Lab TG-2 at 2016. Before it deorbited

    更新日期:2020-09-01
  • Finite-size Scaling of O(n) Systems at the Upper Critical Dimensionality*
    Natl. Sci. Rev. (IF 16.693) Pub Date : 2020-08-31
    Jian-Ping Lv; Wanwan Xu; Yanan Sun; Kun Chen; Youjin Deng

    Logarithmic finite-size scaling of the O(n) universality class at the upper critical dimensionality (dc = 4) has a fundamental role in statistical and condensed-matter physics and important applications in various experimental systems. Here, we address this long-standing problem in the context of the n-vector model (n = 1, 2, 3) on periodic four-dimensional hypercubic lattices. We establish an explicit

    更新日期:2020-09-01
  • Engineering G-quadruplex aptamer to modulate its binding specificity
    Natl. Sci. Rev. (IF 16.693) Pub Date : 2020-08-31
    Long Li; Shujuan Xu; Xueyu Peng; Yuzhuo Ji; He Yan; Cheng Cui; Xiaowei Li; Xiaoshu Pan; Lu Yang; Liping Qiu; Jianhui Jiang; Weihong Tan

    The use of aptamers in bioanalytical and biomedical applications exploits their ability to recognize cell surface protein receptors. Targeted therapeutics and theranostics come to mind in this regard. However, protein receptors occur on both cancer and normal cells; as such, aptamers are now taxed with identifying high vs. low levels of protein expression. Inspired by the flexible template mechanism

    更新日期:2020-09-01
  • Integrated dynamic wet spinning of core-sheath hydrogel fibers for optical-to-brain/tissue communications
    Natl. Sci. Rev. (IF 16.693) Pub Date : 2020-08-31
    Guoyin Chen; Gang Wang; Xinrong Tan; Kai Hou; Qingshuo Meng; Peng Zhao; Shun Wang; Jiayi Zhang; Zhan Zhou; Tao Chen; Yanhua Cheng; Benjamin S Hsiao; Elsa Reichmanis; Zhu Meifang

    Hydrogel optical light-guides have received substantial interest for applications such as deep-tissue biosensors, optogenetic stimulation and photomedicine due to their biocompatibility, (micro)structure control and tissue-like Young's modulus. However, despite recent developments, the large-scale fabrication with a continuous synthetic methodology, which could produce core-sheath hydrogel fibers with

    更新日期:2020-09-01
  • Identification of the activity source of CO2 electroreduction by strategic catalytic site distribution in stable supramolecular structure system
    Natl. Sci. Rev. (IF 16.693) Pub Date : 2020-08-31
    Sheng-Nan Sun; Ning Li; Jiang Liu; Wen-Xin Ji; Long-Zhang Dong; Yi-Rong Wang; Ya-Qian Lan

    Identification of the real catalytic site in CO2 reduction reaction (CO2RR) is critical for the rational design of catalyst and the understanding of reactive mechanism. In this study, the catalytic activity of pyridine-containing materials was for the first time structurally demonstrated in CO2RR by crystalline supramolecular coordination compounds model system. The system consists of three stable

    更新日期:2020-09-01
  • Precision Spectroscopy of Atomic Helium
    Natl. Sci. Rev. (IF 16.693) Pub Date : 2020-08-31
    Y R Sun; S-M Hu

    Helium is a prototype three-body system and has long been a model system for developing quantum mechanics theory and computational methods. The fine structure splitting in the 23P state of helium is considered to be the most suitable for determining the fine structure constant α in atoms. After more than 50 years of efforts by many theorists and experimentalists, now we are working toward a determination

    更新日期:2020-09-01
  • Multi-layer 3D chirality: its enantioselective synthesis and aggregation-induced emission (AIE)
    Natl. Sci. Rev. (IF 16.693) Pub Date : 2020-08-31
    Junliang Zhang; László Kürti

    Authors made equal contributions to this writing.

    更新日期:2020-09-01
  • Green fabrication of hierarchical zeolites from natural minerals
    Natl. Sci. Rev. (IF 16.693) Pub Date : 2020-08-31
    Yuanyuan Yue; Haibo Zhu; Tinghai Wang; Xiaojun Bao

    Hierarchical zeolites are very useful and important catalytic materials and catalysts in petroleum refining and chemical production processes, but their synthesis faces serious economic and environmental challenges. This perspective describes a green and versatile strategy to directly synthesize various hierarchical zeolites with different topologies and hetero-atoms in their frameworks from natural

    更新日期:2020-09-01
  • Approaching aggregated state chemistry accelerated by aggregation-induced emission
    Natl. Sci. Rev. (IF 16.693) Pub Date : 2020-08-31
    Yujun Xie; Zhen Li

    The foundation of aggregation-induced emission (AIE) has greatly affected the design strategies of luminous materials, and accelerated the relevant theoretical and practical application investigation. The AIE concept also inspires the exploration on “aggregated state chemistry” and enlightens new research areas of room-temperature phosphorescence and mechanoluminescence.

    更新日期:2020-09-01
  • Trapping endoplasmic reticulum with amphiphilic AIE-active sensor via specific interaction of ATP-sensitive potassium (KATP)
    Natl. Sci. Rev. (IF 16.693) Pub Date : 2020-08-31
    Zhirong Zhu; Qi Wang; Hongze Liao; Ming Liu; Zhenxing Liu; Youheng Zhang; Wei-Hong Zhu

    The current aggregation-induced emission luminogens (AIEgens) sometimes suffer from poor targeting selectivity due to undesirable aggregation in hydrophilic biosystem with “always-on” fluorescence or unspecific aggregation in lipophilic organelle with premature activated fluorescence. Herein, we report an unprecedented “amphiphilic AIEgen” sensor QM-SO3-ER based on the AIE building block of quinoline-malononitrile

    更新日期:2020-09-01
  • Topological phases of quantized light
    Natl. Sci. Rev. (IF 16.693) Pub Date : 2020-08-31
    Han Cai; Da-Wei Wang

    Topological photonics is an emerging research area that focuses on the topological states of classical light. Here we reveal the topological phases that are intrinsic to the quantum nature of light, i.e., solely related to the quantized Fock states and the inhomogeneous coupling strengths between them. The Hamiltonian of two cavities coupled with a two-level atom is an intrinsic one-dimensional Su-Schriefer-Heeger

    更新日期:2020-09-01
  • Co13O8—Metalloxocubes: A new class of perovskite-like neutral clusters with cubic aromaticity
    Natl. Sci. Rev. (IF 16.693) Pub Date : 2020-08-29
    Lijun Geng; Mouyi Weng; Cong-Qiao Xu; Hanyu Zhang; Chaonan Cui; Haiming Wu; Xin Chen; Mingyu Hu; Hai Lin; Zhen-Dong Sun; Xi Wang; Han-Shi Hu; Jun Li; Jiaxin Zheng; Zhixun Luo; Feng Pan; Jiannian Yao

    Exploring stable clusters to understand structural evolution from atoms to macroscopic matter and to construct new materials is interesting yet challenging in chemistry. Utilizing our newly developed deep-ultraviolet laser ionization mass spectrometry technique, here we observe the reactions of neutral cobalt clusters with oxygen and find a very stable cluster species of Co13O8 that dominates the mass

    更新日期:2020-08-29
  • Diatom-inspired multiscale mineralization of patterned protein-polysaccharide complex structures
    Natl. Sci. Rev. (IF 16.693) Pub Date : 2020-08-29
    Ke Li; Yingfeng Li; Xinyu Wang; Mengkui Cui; Bolin An; Jiahua Pu; Jintao Liu; Boyang Zhang; Guijun Ma; Chao Zhong

    Marine diatoms construct their hierarchically ordered, three-dimensional (3D) external structures called frustules through precise biomineralization processes. Recapitulating the remarkable architectures and functions of diatom frustules in artificial materials is a major challenge that has important technological implications for hierarchically ordered composites. Here, we report the construction

    更新日期:2020-08-29
  • Ultra-high piezoelectric coefficients and strain-sensitive curie temperature in hydrogen-bonded systems
    Natl. Sci. Rev. (IF 16.693) Pub Date : 2020-08-28
    Yangyang Ren; Menghao Wu; Jun-Ming Liu

    We propose a new approach to obtain ultra-high piezoelectric coefficients that can be infinitely large theoretically, where ferroelectrics with strain-sensitive Curie temperature are necessary. We show the first-principles plus Monte Carlo simulation evidence that many hydrogen-bonded ferroelectrics (e.g. organic PhMDA) can be ideal candidates, which are also flexible and lead-free. Owing to the specific

    更新日期:2020-08-29
  • Graphdiyne based metal atomic catalysts for synthesizing ammonia
    Natl. Sci. Rev. (IF 16.693) Pub Date : 2020-08-28
    Huidi Yu; Yurui Xue; Lan Hui; Chao Zhang; Yan Fang; Yuxin Liu; Xi Chen; Danyan Zhang; Bolong Huang; Yuliang Li

    Exploring new catalysts for nitrogen reduction at ambient pressures and temperatures with ultrahigh ammonia (NH3) yield and selectivity is still a giant challenge. In this work, atomic catalysts with separated Pd atoms on graphdiyne (Pd-GDY) have been synthesized and show fascinating electrocatalytic properties for nitrogen reduction. Outstandingly, the catalyst shows the highest average NH3 yield

    更新日期:2020-08-29
  • Ultra-small hollow ternary alloy nanoparticles for efficient hydrogen evolution reaction
    Natl. Sci. Rev. (IF 16.693) Pub Date : 2020-08-28
    Zhenxing Li; Chengcheng Yu; Yikun Kang; Xin Zhang; Yangyang Wen; Zhao-Kui Wang; Chang Ma; Cong Wang; Kaiwen Wang; Xianlin Qu; Miao He; Ya-Wen Zhang; Weiyu Song

    Hollow nanoparticles with large specific surface area and high atom utilization are promising catalysts for the hydrogen evolution reaction (HER). We describe herein the design and synthesis of a series of ultra-small hollow ternary alloy nanostructures using a simple one-pot strategy. The same technique was demonstrated for hollow PtNiCu nanoparticles, hollow PtCoCu nanoparticles, and hollow CuNiCo

    更新日期:2020-08-29
  • What limits limits?
    Natl. Sci. Rev. (IF 16.693) Pub Date : 2020-08-28
    Yong-Chun Liu; Kun Huang; Yun-Feng Xiao; Lan Yang; Cheng-Wei Qiu

    Physical systems are usually constrained by a variety of limits originating from fundamental physical laws. Breaking a limit typically represents a breakthrough in the related research field. We review different limits in physical systems and discuss the scenarios of “breaking the limit” in three categories, which clarify some mis-interpretations and ambiguities in the literatures.

    更新日期:2020-08-29
  • Two-dimensional characterization of three-dimensional nanostructures of magnetic bubbles in Fe3Sn2
    Natl. Sci. Rev. (IF 16.693) Pub Date : 2020-08-28
    Jin Tang; Yaodong Wu; Lingyao Kong; Weiwei Wang; Yutao Chen; Yihao Wang; Y Soh; Yimin Xiong; Mingliang Tian; Haifeng Du

    We report differential phase contrast scanning transmission electron microscopy (TEM) of nanoscale magnetic objects in Kagome ferromagnet Fe3Sn2 nanostructures. This technique can directly detect the deflection angle of a focused electron beam, thus allowing clear identification of the real magnetic structures of two magnetic objects including three-ring and complex arch-shaped vortices in Fe3Sn2 by

    更新日期:2020-08-29
  • Ideal type-II Weyl points in topological circuits
    Natl. Sci. Rev. (IF 16.693) Pub Date : 2020-08-28
    Rujiang Li; Bo Lv; Huibin Tao; Jinhui Shi; Yidong Chong; Baile Zhang; Hongsheng Chen

    Weyl points (WPs), nodal degenerate points in three-dimensional (3D) momentum space, are said to be ‘ideal’ if they are symmetry-related and well-separated, and reside at the same energy and far from nontopological bands. Although type-II WPs have unique spectral characteristics compared with type-I counterparts, ideal type-II WPs have not yet been reported due to the lack of an experimental platform

    更新日期:2020-08-29
  • Efficient rare earth cerium(III) complex with nanosecond d-f emission for blue organic light-emitting diodes
    Natl. Sci. Rev. (IF 16.693) Pub Date : 2020-08-28
    Zifeng Zhao; Liding Wang; Ge Zhan; Zhiwei Liu; Zuqiang Bian; Chunhui Huang

    Blue organic light-emitting diode (OLED) is still a challenge among the RGB ones due to the lack of emitter simultaneously has short excited state lifetime and high theoretical external quantum efficiency (EQE). We demonstrate herein a blue emissive rare earth cerium(III) complex Ce-2 showing a high photoluminescence quantum yield of 95% and a short excited state lifetime of 52.0 ns in doped film,

    更新日期:2020-08-29
  • Ultra-sensitive hybrid diamond nanothermometer
    Natl. Sci. Rev. (IF 16.693) Pub Date : 2020-08-28
    Chu-Feng Liu; Weng-Hang Leong; Kangwei Xia; Xi Feng; Amit Finkler; Andrej Denisenko; Jörg Wrachtrup; Quan Li; Ren-Bao Liu

    Nitrogen-vacancy (NV) centers in diamond are promising quantum sensors for their long spin coherence time under ambient conditions. However, their spin resonances are relatively insensitive to non-magnetic parameters such as temperature. A magnetic-nanoparticle-nanodiamond hybrid thermometer, where the temperature change is converted to the magnetic field variation near the Curie temperature, was demonstrated

    更新日期:2020-08-29
  • Aggregation-induced emission in luminescent metal nanoclusters
    Natl. Sci. Rev. (IF 16.693) Pub Date : 2020-08-28
    Zhennan Wu; Qiaofeng Yao; Shuang-quan Zang; Jianping Xie

    Leveraging on the well-defined molecular structures of metal nanoclusters, we provide in-depth discussions and future outlook on AIE-type luminescent metal nanoclusters, generating principles that can enhance the AIE properties of metal NCs from both in and beyond “single cluster” level.

    更新日期:2020-08-29
  • Molecular grafting towards high-fraction active nanodots implanted in N-doped carbon for sodium dual-ion batteries
    Natl. Sci. Rev. (IF 16.693) Pub Date : 2020-08-25
    Sainan Mu; Qirong Liu; Pinit Kidkhunthod; Xiaolong Zhou; Wenlou Wang; Yongbing Tang

    Sodium-based dual-ion batteries (Na-DIBs) show a promising potential for large-scale energy storage applications due to the merits of environmental friendliness and low cost. However, Na-DIBs are generally subject to poor rate capability and cycling stability for the lack of suitable anodes to accommodate large Na+ ions. Herein, we propose a molecular grafting strategy to in-situ synthesize tin pyrophosphate

    更新日期:2020-08-25
  • A single-cell transcriptome atlas of the aging human and macaque retina
    Natl. Sci. Rev. (IF 16.693) Pub Date : 2020-08-25
    Wenyang Yi; Yufeng Lu; Suijuan Zhong; Mei Zhang; Le Sun; Hao Dong; Mengdi Wang; Min Wei; Haohuan Xie; Hongqiang Qu; Rongmei Peng; Jing Hong; Ziqin Yao; Yunyun Tong; Wei Wang; Qiang Ma; Zeyuan Liu; Yuqian Ma; Shouzhen Li; Chonghai Yin; Jianwei Liu; Chao Ma; Xiaoqun Wang; Qian Wu; Tian Xue

    The human retina is a complex neural tissue that detects light and sends visual information to the brain. However, the molecular and cellular processes that underlie aging primate retina remain unclear. Here, we provide a comprehensive transcriptomic atlas based on 119,520 single cells of the foveal and peripheral retina of humans and macaques covering different ages. The molecular features of retinal

    更新日期:2020-08-25
  • Defining “Science-based Targets”
    Natl. Sci. Rev. (IF 16.693) Pub Date : 2020-08-25
    Inger Andersen; Naoko Ishii; Thomas Brooks; Cynthia Cummis; Gustavo Fonseca; Astrid Hillers; Nicholas Macfarlane; Nebojsa Nakicenovic; Kevin Moss; Johan Rockström; Andrew Steer; Dominic Waughray; Caroline Zimm

    The term “science-based targets” has gained recent popularity. It is used to refer both to overall science-based targets (established through intergovernmental treaties), and to their disaggregation into specific science-based targets (determining contributions of individual actors). Biophysical achievability, measurability, and underpinning rationale are requirements for considering a target to be

    更新日期:2020-08-25
  • Exploring ancestral phenotypes and evolutionary development of the mammalian middle ear based on Early Cretaceous Jehol mammals
    Natl. Sci. Rev. (IF 16.693) Pub Date : 2020-08-25
    Fangyuan Mao; Cunyu Liu; Morgan Hill Chase; Andrew K Smith; Jin Meng

    We report a new Cretaceous multituberculate mammal with 3D auditory bones preserved. Along with other fossil and extant mammals, the unequivocal auditory bones display features potentially representing ancestral phenotypes of the mammalian middle ear. These phenotypes show that the ectotympanic and the malleus-incus complex changed notably during their retreating from the dentary at various evolutionary

    更新日期:2020-08-25
  • Control over π-π stacking of heteroheptacene-based nonfullerene acceptors for 16% efficiency polymer solar cells
    Natl. Sci. Rev. (IF 16.693) Pub Date : 2020-08-25
    Yunlong Ma; Dongdong Cai; Shuo Wan; Pan Yin; Pengsong Wang; Wenyuan Lin; Qingdong Zheng

    Nonfullerene acceptors are being actively explored for polymer solar cells (PSCs) with their advantages in extending the absorption range, reducing the energy loss, and therefore enhancing the power conversion efficiency (PCE). But to boost the PCE further, mobilities of these nonfullerene acceptors should be improved. For nonfullerene acceptors, the π-π stacking distance between cofacially stacked

    更新日期:2020-08-25
  • Hierarchically structured porous materials: synthesis strategies and applications in energy storage
    Natl. Sci. Rev. (IF 16.693) Pub Date : 2020-08-24
    Liang Wu; Yu Li; Zhengyi Fu; Bao-Lian Su

    To address the growing energy demands of sustainable development, it is crucial to develop new materials that can improve the efficiency of energy storage systems. Hierarchically structured porous materials have shown their great potential for energy storage applications owing to their large accessible space, high surface area, low density, excellent accommodation capability with volume and thermal

    更新日期:2020-08-24
  • Single-cell Transcriptomic Landscape of Human Blood Cells
    Natl. Sci. Rev. (IF 16.693) Pub Date : 2020-08-24
    Xiaowei Xie; Mengyao Liu; Yawen Zhang; Bingrui Wang; Caiying Zhu; Chenchen Wang; Qing Li; Yingying Huo; Jiaojiao Guo; Changlu Xu; Linping Hu; Aiming Pang; Shihui Ma; Lina Wang; Wenbin Cao; Shulian Chen; Qiuling Li; Sudong Zhang; Xueying Zhao; Wen Zhou; Hongbo Luo; Guoguang Zheng; Erlie Jiang; Sizhou Feng; Lixiang Chen; Xiuli An; Lihong Shi; Hui Cheng; Sha Hao; Ping Zhu; Tao Cheng

    High throughput single-cell RNA-seq has been successfully implemented to dissect the cellular and molecular features underlying hematopoiesis. However, an elaborate and comprehensive transcriptome reference of the whole blood system is lacking. Here, we profiled the transcriptomes of 7,551 human blood cells representing 32 immunophenotypic cell types, including hematopoietic stem cells, progenitors

    更新日期:2020-08-24
  • Tracking structural evolution: operando regenerative CeOx/Bi interface structure for high-performance CO2 electroreduction
    Natl. Sci. Rev. (IF 16.693) Pub Date : 2020-08-24
    Ruichao Pang; Pengfei Tian; Hongliang Jiang; Minghui Zhu; Xiaozhi Su; Yu Wang; Xiaoling Yang; Yihua Zhu; Li Song; Chunzhong Li

    Unveiling structural evolution and working mechanism of catalysts under realistic operating conditions is crucial for the design of efficient electrocatalysts for CO2 electroreduction, yet remaining highly challenging. Here, by virtue of operando structural measurements at multiscale levels, it is identified under CO2 electroreduction conditions that as-prepared CeO2/BiOCl precatalyst gradually evolves

    更新日期:2020-08-24
  • Diffusion and catalyst efficiency in hierarchical zeolite catalysts
    Natl. Sci. Rev. (IF 16.693) Pub Date : 2020-08-21
    Peng Peng; Zi-Feng Yan; Svetlana Mintova; Xiong-Hou Gao

    The preparation of hierarchical zeolites with reduced diffusion limitation and enhanced catalyst efficiency has become a vital focus in the field of zeolites and porous materials chemistry within the past decades. This review will focus on the diffusion and catalyst efficiency of hierarchical zeolites and industrial catalysts. The benefits of diffusion and catalyst efficiency at two levels of hierarchy

    更新日期:2020-08-22
  • Natural selection contributes to the myopia epidemic
    Natl. Sci. Rev. (IF 16.693) Pub Date : 2020-08-17
    Erping Long; Jianzhi Zhang

    The prevalence of myopia, or nearsightedness, has skyrocketed in the past few decades, creating a public health crisis that is commonly attributed to life-style changes. Here we report an overall increase in the frequencies of myopia-associated mutant alleles over 25 years among participants of the UK Biobank. Although myopia itself appears to be selected against, many of the mutant alleles are associated

    更新日期:2020-08-17
  • International collaboration for global accessibility of COVID-19 vaccines
    Natl. Sci. Rev. (IF 16.693) Pub Date : 2020-07-08
    Qi Zhou

    The novel coronavirus has been spreading and has currently affected over 200 countries and territories across the world. However, up to now, there is still no cure for COVID-19. Not surprisingly, the vaccine is considered the ultimate solution to the coronavirus pandemic and it is believed that there has never been a more urgent task than creating broad immunity against the coronavirus.

    更新日期:2020-08-12
  • While neither universally applicable nor practical operationally, the biological species concept continues to offer a compelling framework for studying species and speciation
    Natl. Sci. Rev. (IF 16.693) Pub Date : 2020-06-09
    Lexuan Gao; Loren H Rieseberg

    Few topics in evolutionary biology have received as much scrutiny and debate as the nature of species and species concepts. This is partly because species are central to many fields of biology (but especially evolution, ecology, systematics, and conservation biology), and there does not appear to be a single concept that can satisfy the needs of these different disciplines [1]. A related issue is that

    更新日期:2020-08-12
  • Replies to the commentaries on the question of ‘Is it time to abandon the biological species concept?’
    Natl. Sci. Rev. (IF 16.693) Pub Date : 2020-06-03
    Chung-I Wu; Xinfeng Wang; Ziwen He; Suhua Shi

    In reassessing the biological species concept (BSC), the central disagreement is whether the concept of species should be linked to the process of species formation. Here, we argue that species should be, and can only be, defined in the context of the process of speciation. By evaluating BSC this way, we find the large body of genomic evidence on ‘speciation with gene flow’ does not constitute sufficient

    更新日期:2020-08-12
  • Biomechanical research into lamina cribrosa in glaucoma
    Natl. Sci. Rev. (IF 16.693) Pub Date : 2020-04-11
    Li L, Song F.

    SummaryGlaucoma, a leading cause of irreversible blindness, poses a considerable public health challenge and burden. Mechanical models of the lamina cribrosa under elevated intraocular pressure at different scales, contributing significantly to uncovering the glaucomatous pathogenesis, are discussed. Meanwhile, the open issues and avenues for further development are highlighted.

    更新日期:2020-08-12
  • Halogen bonding in Co-crystallization of potentially ditopic diiodotetrafluorobenzene: A powerful tool for constructing multicomponent supramolecular assemblies
    Natl. Sci. Rev. (IF 16.693) Pub Date : 2020-08-07
    Xue-Hua Ding; Yong-Zheng Chang; Chang-Jin Ou; Jin-Yi Lin; Ling-Hai Xie; Wei Huang

    Halogen bond is emerging as a significant driving force for supramolecular self-assembly, and has aroused great interest during the last two decades. Among the diverse halogen-bonding donors, we take notice of the ability of 1,4-diiodotetrafluorobenzene (1,4-DITFB) to co-crystallize with diverse halogen-bonding acceptors in the range from neutral Lewis bases (nitrogen-containing compounds, N-oxides

    更新日期:2020-08-08
  • Two-dimensional optical spatial differentiation and high-contrast imaging
    Natl. Sci. Rev. (IF 16.693) Pub Date : 2020-08-06
    Junxiao Zhou; Haoliang Qian; Junxiang Zhao; Min Tang; Qianyi Wu; Ming Lei; Hailu Luo; Shuangchun Wen; Shaochen Chen; Zhaowei Liu

    Optical analog signal processing technology has been widely studied and applied in a variety of science and engineering fields. It overcomes low-speed and high-power consumption disadvantages compared with its digital counterparts. Meanwhile, the emerging metasurface technology has been introduced to optical imaging and processing system and attracted much attentions. Here, we demonstrate the first

    更新日期:2020-08-06
  • Effects of dietary macronutrients and body composition on glucose homeostasis in mice
    Natl. Sci. Rev. (IF 16.693) Pub Date : 2020-08-06
    Sumei Hu; Jacques Togo; Lu Wang; Yingga Wu; Dengbao Yang; Yanchao Xu; Li Li; Baoguo Li; Min Li; Jianbo Li; Guanlin Wang; Xueying Zhang; Chaoqun Niu; Mohsen Mazidi; Alex Douglas; John R Speakman

    As a major health issue, obesity is linked with elevated risk of type 2 diabetes. However, whether disrupted glucose homeostasis is due to altered body composition alone, or dietary macronutrients play an additional role, independent of their impact on body composition, remains unclear. We investigated the associations between macronutrients, body composition, blood hormones and glucose homeostasis

    更新日期:2020-08-06
  • Microbes mediated comprehensive carbon sequestration for negative emission in the ocean
    Natl. Sci. Rev. (IF 16.693) Pub Date : 2020-07-28
    Nianzhi Jiao; Jihua Liu; Fanglue Jiao; Quanrui Chen; Xiaoxue Wang

    CO2 emission exacerbates climate change. One mitigation solution is ocean carbon negative emission (ONCE). Microbes mediated organic and inorganic carbon sequestration provides a promising ONCE approach to kill two birds with one stone in hypoxic coastal eutrophication waters and massive aquaculture areas: increasing carbon sinks while improving the environments.

    更新日期:2020-07-28
  • Efficient potential-tuning strategy through p-type doping for designing cathodes with ultrahigh energy density
    Natl. Sci. Rev. (IF 16.693) Pub Date : 2020-07-27
    Zhiqiang Wang; Da Wang; Zheyi Zou; Tao Song; Dixing Ni; Zhenzhu Li; Xuecheng Shao; Wanjian Yin; Yanchao Wang; Wenwei Luo; Musheng Wu; Maxim Avdeev; Bo Xu; Siqi Shi; Chuying Ouyang; Liquan Chen

    Designing new cathodes with high capacity and moderate potential is the key to break energy density ceiling imposed by current intercalation chemistry on rechargeable battery. The carbonaceous materials provide high capacities but their low potentials limit their application to anodes. Here, we show that Fermi level tuning by p-type doping can be an effective way of dramatically raising electrode potential

    更新日期:2020-07-28
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