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Chinese Optics Letters 2023年第5期21卷 47-51页

作者：付强钱静王关德赵全忠 State Key Laboratory of High Field Laser Physics and CAS center for excellence in Ultra-intense Laser Science Shanghai Institute of Optics and Fine MechanicsChinese Academy of SciencesShanghai 201800China University of Chinese Academy of Sciences Beijing 100049China

High-repetition rate femtosecond lasers are shown to drive heat accumulation processes that are attractive for femtosecond laser-induced subwavelength periodic surface structures on *** laser micromachining is no longer a nonthermal process,as long as the repetition rate reaches up to 100 kHz due to heat ***,a higher repetition rate generates much better defined ripple structures on the silicon surface,based on the fact that accumulated heat raises lattice temperature to the melting point of silicon(1687 K),with more intense surface plasmons excited *** of the surface morphology on repetition rate and on the overlapping rate confirms that repetition rate and pulse overlapping rate are two competing factors that are responsible for the period of ripple *** period drifts longer because of a higher repetition rate due to increasing electron density;however,the period of laser structured surface is significantly reduced with the pulse overlapping *** Maxwell–Garnett effect is confirmed to account for the ripple period-decreasing trend with the pulse overlapping rate.

关键词： laser materials processing femtosecond laser subwavelength periodic surface structures

Multi-shelled TiO2/Fe2TiO5 heterostructured hollow microspheres for enhanced solar water oxidation

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Nano Research 2017年第11期10卷 3920-3928页

作者： Muhammad Waqas Yanze Wei Dan Mao Jian Qi Yu Yang Bao Wang Dan Wang State Key Laboratory of Biochemical Engineering CAS Center for Excellence in Nanoscience Institute of Process Engineering Chinese Academy of Sciences 1 North 2nd Street Zhongguancun Haidian District Beijing 100190 China Department of Physical Chemistry School of Metallurgical and Ecological Engineering University of Science & Technology Beijing No.30 Xueyuan Road Haidian District Beijing 100083 China University of Chinese Academy of Sciences Chinese Academy of Sciences No.19A Yuquanlu Beijing 100049 China

There remains a pressing challenge in the fabrication of superior photocatalysts for light-driven water ***,we designed and fabricated heterostructured TiO2/Fe2TiO5 hollow microspheres with single-,double-,closed-double-,triple-,and core-shell structures and different Fe/Ti molar ratios using a facile sequential templating *** closed-double-shelled TiO2/Fe2TiO5 hollow microspheres with 35% Fe exhibited the highest oxygen evolution reaction rate up to 375 μmol＆#183;g-1＆#183;h-1 and good stability for 5 *** high performance can be attributed to the closed-double shell,which had more reactive sites and greater light-harvesting ability,self-supported thin shells with short charge-transfer paths,and a favorable staggered band alignment between the TiO2 and Fe2TiOs.

关键词： multi-shelled hollow microsphere titanium oxide pseudo-brookite heterostructure photocatalytic water oxidation

Real-time monitoring of tumor vascular disruption induced by radiofrequency assisted gadofullerene

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Science China materials 2018年第8期61卷 1101-1111页

作者： Ruijun Deng Yuqing Wang Mingming Zhen Xue Li Toujun ZOU Jie Li Tong Yu Yue Zhou Zhigao Lu Hui Xu Chunying Shu Chunru Wang Beijing National Laboratory for Molecular Sciences Key Laboratory of Molecular Nanostructure and NanotechnologyCAS Research / Education Center for Excellence in Molecular SciencesInstitute of ChemistryChinese Academy of SciencesBeijing 100190China University of Chinese Academy of Sciences Beijing 100049Chin CAS Key Lab for Biomedical Effects of Nanomaterials and Nanosafety National Center for Nanoscience and TechnologyBeijing 100190China

The anti-vascular therapy has been extensively studied for high performance tumor therapy by suppressing the tumor angiogenesis or cutting off the existing tumor vasculature. We have previously reported a novel anti-tumor treatment technique using radiofrequency （RF）-assisted ga- dofullerene nanocrystals （GFNCs） to selectively disrupt the tumor vasculature. In this work, we further revealed the changes on morphology and functionality of the tumor vas-culature during the high-performance RF-assisted GFNCs treatment in vivo. Here, a dearly evident mechanism of this technique in tumor vascular disruption was elucidated. Based on the H22 tumor bearing mice with dorsal skin flap chamber （DSFC） mode] and the dynamic contrast enhanced magnetic resonance imaging （DCE-MRI） technique, it was revealed that the GFNCs would selectively inset in the gaps of tumor vas-culature due to the innately incomplete structures and unique microenvironment of tumor vasculature,＇ and they damaged the surrounding endothelia cells excited by the RF to induce a phase transition accompanying with size expansion. Soon afterwards, the blood flow of the tumor blood vessels was permanently shut off, causing the entire tumor vascular net- work to collapse within 24 h after the treatment. The RF-as- sistant GFNCs technique was proved to aim at the tumor vasculatnre precisely, and was harmless to the normal vascu- lature. The current studies provide a rational explanation on the high efficiency anticancer activity of the RF-assisted GFNCs treatment, suggesting a novel technique with potent clinical application.

关键词： gadofullerene radiofrequency dorsal skin flap chamber dynamic contrast enhanced magnetic resonance imaging tumor vasculaturegadofullerene radiofrequency dorsal skin flap chamber dynamic contrast enhanced magnetic resonance imaging tumor vasculature

Human 8-cell embryos enable efficient induction of disease-preventive mutations without off-target effect by cytosine base editor

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Protein & Cell 2023年第6期14卷 416-432页

作者： Yinghui Wei Meiling Zhang Jing Hu Yingsi Zhou Mingxing Xue Jianhang Yin Yuanhua Liu Hu Feng Ling Zhou Zhifang Li Dongshuang Wang Zhiguo Zhang Yin Zhou Hongbin Liu Ning Yao Erwei Zuo Jiazhi Hu Yanzhi Du Wen Li Chunlong Xu Hui Yang center for Reproductive Medicine International Peace Maternity and Child Health HospitalInnovative Research Team of High-level Local Universities in ShanghaiSchool of MedicineShanghai Jiao Tong UniversityShanghai 2000301.Center for Reproductive MedicineInternational Peace Maternity and Child Health HospitalInnovative Research Team of High-level Local Universities in ShanghaiSchool of MedicineShanghai Jiao Tong UniversityShanghai 200030China Institute of Neuroscience State Key Laboratory of NeuroscienceKey Laboratory of Primate NeurobiologyCAS Center for Excellence in Brain Science and Intelligence TechnologyShanghai Institutes for Biological SciencesChinese Academy of SciencesShanghai 200031China Lingang Laboratory Shanghai Research Center for Brain Science and Brain-Inspired Intelligence TechnologyShanghai 200031China center for Reproductive Medicine Ren Ji HospitalSchool of MedicineShanghai Key Laboratory for Assisted Reproduction and Reproductive GeneticsShanghai Jiao Tong UniversityShanghai 200127China The MOE Key Laboratory of Cell Proliferation and Differentiation School of Life SciencesGenome Editing Research CenterPeking UniversityBeijing 100871China center for Reproductive Medicine Shandong UniversityJinan 250012China center for Reproductive Medicine Anhui Provincial Maternal and Child Health HospitalHefei 230001China Shenzhen Branch Guangdong Laboratory for Lingnan Modern AgricultureGenome Analysis Laboratory of the Ministry of AgricultureAgricultural Genomics Institute at ShenzhenChinese Academy of Agricultural SciencesShenzhen 518000China Reproductive Medicine center Department of Obstetrics and Gynecologythe First Affiliated Hospital of Anhui Medical UniversityHefei 230022China

Approximately 140 million people worldwide are homozygous carriers of APOE4(ε4),a strong genetic risk factor for late onset familial and sporadic Alzheimer’s disease(AD),91%of whom will develop AD at earlier age than heterozygous carriers and *** to AD could be reduced by targeted editing of APOE4,but a technical basis for controlling the off-target effects of base editors is necessary to develop low-risk personalized gene ***,we first screened eight cytosine base editor variants at four injection stages(from 1-to 8-cell stage),and found that FNLS-YE1 variant in 8-cell embryos achieved the comparable base conversion rate(up to 100%)with the lowest bystander *** particular,80%of AD-susceptibleε4 allele copies were converted to the AD-neutralε3 allele in humanε4-carrying *** control measures combined with targeted deep sequencing,whole genome sequencing,and RNA sequencing showed no DNA or RNA off-target events in FNLS-YE1-treated human embryos or their derived stem ***,base editing with FNLS-YE1 showed no effects on embryo development to the blastocyst ***,we also demonstrated FNLS-YE1 could introduce known protective variants in human embryos to potentially reduce human susceptivity to systemic lupus erythematosus and familial *** study therefore suggests that base editing with FNLS-YE1 can efficiently and safely introduce known preventive variants in 8-cell human embryos,a potential approach for reducing human susceptibility to AD or other genetic diseases.

关键词： human embryo APOE4 disease-preventive mutations base editor

Synergistic integration of self-supported 1T/2H-WS_(2) and nitrogendoped rGO on carbon cloth for pH-universal electrocatalytic hydrogen evolution

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Nano Research 2024年第3期17卷 1267-1280页

作者： Feng Ming Yap Jian Yiing Loh Wee-Jun Ong School of Energy and Chemical Engineering Xiamen University MalaysiaSelangor Darul Ehsan 43900Malaysia center of excellence for NaNo Energy&Catalysis Technology(CONNECT) Xiamen University MalaysiaSelangor Darul Ehsan 43900Malaysia State Key Laboratory of Physical Chemistry of Solid Surfaces College of Chemistry and Chemical EngineeringXiamen UniversityXiamen 361005China Gulei Innovation Institute Xiamen UniversityZhangzhou 363200China Shenzhen Research Institute of Xiamen University Shenzhen 518057China

Hydrogen economy based on electrochemical water splitting exemplified one of the most promising means for overcoming the rapid consumption of fossil fuels and the serious deterioration of global *** development of earth-abundant,efficient,and durable electrocatalysts for hydrogen evolution reaction(HER)plays a vital role in the commercialization of water ***,the self-supported electrode with unique nitrogen-doped reduced graphene oxide(N-rGO)nanoflakes and WS_(2) hierarchical nanoflower that were grown directly on carbon cloth(CC)substrate(WS_(2)/N-rGO/CC)was successfully synthesized using a facile dual-step hydrothermal *** as-synthesized 50%1T/2H-WS_(2)/N-rGO/CC(WGC),which possessed high metallic 1T phase of 57%not only efficiently exposed more active sites and accelerated mass/charge diffusion,but also endowed excellent structural lustiness,robust stability,and durability at a high current *** a result,the 50%WGC exhibited lower overpotentials and Tafel slopes of 21.13 mV(29.55 mV∙dec^(-1))and 80.35 mV(137.02 mV∙dec^(-1))as compared to 20%Pt-C/CC,respectively for catalyzing acidic and alkaline hydrogen evolution ***,the as-synthesized 50%WGC also depicted long-term stability for more than 8 h in the high-current-density regions(100 and 220 mA∙cm^(-2)).In brief,this work reveals a self-supported electrode as an extraordinary alternative to Pt-based catalysts for HER in a wide pH range,while paving a facile strategy to develop advanced electrocatalysts with abundant heterointerfaces for practical applications in energy-saving hydrogen production.

关键词： self-supported electrocatalyst carbon-based substrate phase engineering pH-universal water splitting

The application of quantum coherence as a resource

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Chinese Physics B 2023年第11期32卷 1-15页

作者：刘思远范桁 Institute of Modern Physics Northwest UniversityXi’an 710127China Shaanxi Key Laboratory for Theoretical Physics Frontiers Xi’an 710127China Beijing National Laboratory for Condensed Matter Physics Institute of PhysicsChinese Academy of SciencesBeijing 100190China School of Physical Sciences University of Chinese Academy of SciencesBeijing 100190China CAS center for excellence in Topological Quantum Computation University of Chinese Academy of SciencesBeijing 100190China Beijing Academy of Quantum Information Sciences Beijing 100193China

Quantum coherence is a basic concept in quantum mechanics, representing one of the most fundamental characteristics that distinguishes quantum mechanics from classical physics. Quantum coherence is the basis for multi-particle interference and quantum entanglement. It is also the essential ingredient for various physical phenomena in quantum optics, quantum information, etc. In recent years, with the proposal of a quantum coherence measurement scheme based on a resource theory framework, quantum coherence as a quantum resource has been extensively investigated. This article reviews the resource theories of quantum coherence and introduces the important applications of quantum coherence in quantum computing,quantum information, and interdisciplinary fields, particularly in quantum thermodynamics and quantum biology. Quantum coherence and its applications are still being explored and developed. We hope this review can provide inspiration for relevant research.

关键词： quantum coherence quantum computing quantum information quantum thermodynamics quan-tum biology

Chiral perovskites for room-temperature spin light-emitting diodes

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Science Bulletin 2022年第15期67卷 1535-1538页

作者： Wen Su Fanglong Yuan CAS center for excellence in Nanoscience National Center for Nanoscience and TechnologyBeijing 100190China Department of Physics Chemistryand Biology(IFM)Linköping UniversityLinköping 58183Sweden Department of Electrical and Computer Engineering University of TorontoToronto M5S 2E8Canada

Light-emitting diodes(LEDs)fabricated based on luminescent materials have revolutionized the full-color display and solid-state lighting technologies[1].Spin LEDs(spin-LEDs)that can emit circularly polarized electroluminescence(CP-EL)show broad promising opto-spintronic applications,including three-dimensional(3D)displays,quantum-based optical computing and information pro-cessing,tomography and encryption[2].

关键词：发光二极管 diodes encryption

Experimental realization of a quantum image classifier via tensor-network-based machine learning

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Photonics Research 2021年第12期9卷 2332-2340页

作者： KUNKUN WANG LEI XIAO WEI YI SHI-JU RAN PENG XUE Beijing Computational Science Research center Beijing 100084China School of Physics and Optoelectronics Engineering Anhui UniversityHefei 230601China CAS Key Laboratory of Quantum Information University of Science and Technology of ChinaHefei 230026China CAS center for excellence in Quantum Information and Quantum Physics Hefei 230026China Department of Physics Capital Normal UniversityBeijing 100048China

Quantum machine learning aspires to overcome intractability that currently limits its applicability to practical ***,quantum machine learning itself is limited by low effective dimensions achievable in stateof-the-art ***,we demonstrate highly successful classifications of real-life images using photonic qubits,combining a quantum tensor-network representation of hand-written digits and entanglement-based ***,we focus on binary classification for hand-written zeroes and ones,whose features are cast into the tensor-network representation,further reduced by optimization based on entanglement entropy and encoded into two-qubit photonic *** then demonstrate image classification with a high success rate exceeding 98%,through successive gate operations and projective *** we work with photons,our approach is amenable to other physical realizations such as nitrogen-vacancy centers,nuclear spins,and trapped ions,and our scheme can be scaled to efficient multi-qubit encodings of features in the tensor-product representation,thereby setting the stage for quantum-enhanced multi-class classification.

关键词： tensor quantum realization

2D/2D heterojunction interface:Engineering of 1T/2H MoS_(2) coupled with Ti_(3)C_(2)Tx heterostructured electrocatalysts for pH-universal hydrogen evolution

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Journal of materials Science & Technology 2024年第12期179卷 86-97页

作者： Jian Yiing Loh Feng Ming Yap Wee-Jun Ong School of Energy and Chemical Engineering Xiamen University MalaysiaSepangSelangor Darul Ehsan 43900Malaysia center of excellence for NaNo Energy&Catalysis Technology(CONNECT) Xiamen University MalaysiaSepangSelangor Darul Ehsan 43900Malaysia State Key Laboratory of Physical Chemistry of Solid Surfaces College of Chemistry and Chemical EngineeringXiamen UniversityXiamen 361005China Gulei Innovation Institute Xiamen UniversityZhangzhou 363200China Shenzhen Research Institute of Xiamen University Shenzhen 518057China

Two-dimensional(2D)materials have come to light due to their unique thickness that owns abundant exposed edges with enhanced electrocatalytic properties.2D molybdenum disulfide(MoS_(2))nanosheet has aroused considerable attention due to its tunable surface chemistry and high electrochemical sur-face ***,several shortcomings associated with MoS_(2),such as its naturally existing semi-conducting 2H phase,which has limited active sites due to the inert basal plane,restrict its application in water *** into account the benefits of the 1T/2H phase of MoS_(2),as well as the importance of engineering 2D/2D heterojunction interface for boosted electrocatalysis,metallic Ti_(3)C_(2)Tx was integrated with 1T/2H MoS_(2) to develop 2D/2D 1T/2H MoS_(2)/Ti_(3)C_(2)Tx heterostructured ***,with only 25%of the intercalating agent,1T/2H MoS_(2) with the highest 1T phase content of~82%was successfully *** was further incorporated with 1 wt%of Ti_(3)C_(2)Tx through a com-bination of ultrasonication and mechanical stirring *** 1T/2H MoS_(2)(25D)/Ti_(3)C_(2)Tx-1(MTC-1)manifested outstanding electrocatalytic performance with an overpotential and Tafel slope of 280 mV(83.80 mV dec^(-1))and 300 mV(117.2 mV dec^(-1)),for catalyzing acidic and alkaline medium HER,***,the as-prepared catalysts also illustrated long-term stability for more than 40 *** coupling method for the 2D nanosheets is crucial to suppress the oxidation of Ti_(3)C_(2)Tx and the restack-ing issue of 2D *** superior HER activity is ascribed to the synergistic effect between the heterostructure,enhancing the electronic structure and charge separation *** intrinsic prop-erty of the catalyst further confirms by turnover frequency(TOF)*** such,this research paves the way for designing high-efficiency 2D electrocatalysts and sheds light on the further advancement of tunable 2D electrocatalysts for robust wa

关键词： 2D/2D electrocatalysts Phase engineering pH universal Molybdenum disulfide Ti_(3)C_(2)Tx