Studies on the mechanical behaviour of squeeze-cast SiCw / Al composites have been revjewed. The results show that SiCw / Al composites exhibit improved mechan ical properties and cyclic hard ening. The reasons leadin...Studies on the mechanical behaviour of squeeze-cast SiCw / Al composites have been revjewed. The results show that SiCw / Al composites exhibit improved mechan ical properties and cyclic hard ening. The reasons leading to the above results are discussed. Localized deformation near SiC whiskers plays an important role in the initiation of microcracks in the composites, and the fracture of the composites is caused by the abrupt linking of microcracks展开更多
At the end of last year, the editors from Power and Electrical Engineers interviewed Zhou Xiaoxin on "Fundamental Research on Enhancing Operation Reliability for Large-Scale Interconnected Power Grids", a pr...At the end of last year, the editors from Power and Electrical Engineers interviewed Zhou Xiaoxin on "Fundamental Research on Enhancing Operation Reliability for Large-Scale Interconnected Power Grids", a project of "973 Program". Mr. Zhou, the chief engineer of China Electric Power Research Institute(CEPRI) and an academician of Chinese Academy of Sciences, is the chief scientist in charge of this research project.展开更多
The Central Committee of the Communist Party of China and the State Council have put forward "the strategy for revitalizing China through science and education" and decided to implement it with the turn of t...The Central Committee of the Communist Party of China and the State Council have put forward "the strategy for revitalizing China through science and education" and decided to implement it with the turn of the century. All circles of the society and the broad masses of people i n China are unprecedentedly raising their scientific and technical awareness and so gradually reaching more and more common understanding of the role that fundamental research in natural science has been playing as a cornerstone in the implementation of "the strategy of revitalizing China through science and education".展开更多
This article expounds the strategic significance and main tasks of fundamental research, and analyses the situation that the Chinese Academy of Sciences is faced with in its fundamental research, and the measures whic...This article expounds the strategic significance and main tasks of fundamental research, and analyses the situation that the Chinese Academy of Sciences is faced with in its fundamental research, and the measures which should be taken.展开更多
Thermal desorption(TD)is a mainstream technology for the remediation of organic compound-contaminated soil.By reviewing the domestic and foreign research on the remediation of organic compound-contaminated soil by TD,...Thermal desorption(TD)is a mainstream technology for the remediation of organic compound-contaminated soil.By reviewing the domestic and foreign research on the remediation of organic compound-contaminated soil by TD,this paper systematically introduces the principle,characteristics,and classification of TD.The impact of key operating parameters(such as heating temperature and heating time),certain physical and chemical properties(such as soil texture,moisture content),and external conditions(such as additives and the carrier gas)on the TD process is summarized.Next,pollutants’migration and their transformation processes,as well as the laws governing the TD process,are briefly described.Finally,the prospects of TD,in terms of its future research and development directions,are described,with the aim of providing references for the application and promotion of TD.展开更多
The progress in the science of energy utilizations will act crucial effect on the developments of energy science and technology, which will then promote social and economical developments and fulfill requirements for ...The progress in the science of energy utilizations will act crucial effect on the developments of energy science and technology, which will then promote social and economical developments and fulfill requirements for the national strategic objectives. For the sake of sustainable development, a harmonious blend of energy utilizations and environment considerations will become one of the vital topics in the future research area of energy science. It is suggested that clean and high-efficiency utilization of traditional or fossil energy resources, fundamental investigations on the energy and environment theory, renewable energy utilizations, and the development of nuclear energy are selected as priority research areas during the period of the Tenth Five-year Plan of China, according to the development trend of the world energy science and the research background of Chinese energy science, It is expected to promote the interdisciplinary investigations in the science of energy utilizations and provide scientific and technological supports for the development of related advanced high technologies,展开更多
Thermal rectification(TR)is a phenomenon akin to electrical rectification.It has a high thermal conductivity(k)in one direction,enabling efficient heat dissipation,as well as a low k in the opposite direction,impeding...Thermal rectification(TR)is a phenomenon akin to electrical rectification.It has a high thermal conductivity(k)in one direction,enabling efficient heat dissipation,as well as a low k in the opposite direction,impeding heat influx.With the rapid development of nanotechnology in recent years,the active control and regulation of heat conduction on the nanoscale has become a critical mission.Graphene,a prominent two-dimensional(2D)material,is highly regarded for its exceptional thermal transport characteristics.There have been studies and achievements both theoretically and experimentally since its discovery.In this review,we establish a bridge between fundamental research and application studies for graphene-based thermal rectifier as follows.Firstly,we summarize the established 2D heat conduction theories and low-dimensional simulation methods.Secondly,we review the progress of experimental techniques and device structures based on 2D theories for graphene-based thermal rectifier.Then,we discuss several applications of thermal rectifier,including thermal logic circuits and thermoelectric power generation system.Finally,we present the potential applications of graphene-based thermal rectifiers previously unexplored,such as microelectronic thermal management and thermal decoupling for flexible equipment.We hope that advancements in morphology and fabrication techniques will lead to widespread use of graphene-based thermal rectifiers in various thermal systems to solve diverse thermal management problems in the near future.展开更多
The journal Chemical Research in Chinese Universities is a comprehensive academic journal in the field of chemistry,published bimonthly since 1984.The journal publishes research articles,letters/communications and rev...The journal Chemical Research in Chinese Universities is a comprehensive academic journal in the field of chemistry,published bimonthly since 1984.The journal publishes research articles,letters/communications and reviews written by faculty members,researchers and postgraduates in universities,colleges and research institutes all over China and overseas.It reports the latest and the most creative results of important fundamental research in all aspects of chemistry and of developments with significant consequences across sub-disciplines.This journal is sponsored by Jilin University and mandated by the Ministry of Education of P.R.China.展开更多
The journal Chemical Research in Chinese Universities is a comprehensive academic journal in the field of chemistry,published bimonthly since 1984.The journal publishes research articles,letters/communications and rev...The journal Chemical Research in Chinese Universities is a comprehensive academic journal in the field of chemistry,published bimonthly since 1984.The journal publishes research articles,letters/communications and reviews written by faculty members,researchers and postgraduates in universities,colleges and research institutes all over China and overseas.It reports the latest and the most creative results of important fundamental research in all aspects of chemistry and of developments with significant consequences across sub-disciplines.This journal is sponsored by Jilin University and mandated by the Ministry of Education of P.R.China.展开更多
people pay more attention to the evaluation and research on Big Science.However,Little Science is the most suitable and inno vative science system that can produce original innovation.University-based research was stu...people pay more attention to the evaluation and research on Big Science.However,Little Science is the most suitable and inno vative science system that can produce original innovation.University-based research was studied as an example.It was proposed that Little Science should receive more attention.Several measures were also suggested to optimize the system of Little Science.展开更多
Objective Pharmacopoeias regulate the manufacture of potentised pharmaceutical preparations used in different branches of complementary and integrative medicine.The physicochemical properties and biological activity o...Objective Pharmacopoeias regulate the manufacture of potentised pharmaceutical preparations used in different branches of complementary and integrative medicine.The physicochemical properties and biological activity of these preparations are often investigated in preclinical research,yet no guidelines for experimental research currently exist in this area.The present PrePoP guidelines aim to provide recommendations to promote high-quality,statistically sound,and reproducible preclinical research on potentised preparations.Methods Input was gathered from researchers nominated by the relevant scientific societies using a simplified Delphi consensus approach covering the most relevant aspects of basic research methodology in the field including appropriate controls,sample preparation and handling,and statistics.After three rounds of feedback,a consensus was finally reached on the most important aspects and considerations for conducting high-quality research on potentised preparations.Results We present a series of recommendations on a range of topics including experimental controls,system stability,blinding and randomisation,environmental influences,and procedures for the preparation of potentised samples and controls,and we address some specific challenges of this research field.Conclusion This expert consensus process resulted in a robust set of methodological guidelines for research on potentised preparations and provides a valuable framework that will inform and improve the quality of subsequent research in this emerging field.展开更多
ANNUAL SPECIAL|CAS Research 2024 in Retrospect The year 2024 witnessed a series of important breakthroughs in fundamental research made by scientists at the Chinese Academy of Sciences(CAS).As a special presentation,B...ANNUAL SPECIAL|CAS Research 2024 in Retrospect The year 2024 witnessed a series of important breakthroughs in fundamental research made by scientists at the Chinese Academy of Sciences(CAS).As a special presentation,BCAS takes a retrospective overview on some milestone events and outstanding discoveries in the past year.展开更多
BACKGROUND Nutritional psychiatry is a rapidly expanding field of research,with mounting evidence suggesting that nutritional factors may play a role in the development of psychiatric disorders.AIM To examine the leve...BACKGROUND Nutritional psychiatry is a rapidly expanding field of research,with mounting evidence suggesting that nutritional factors may play a role in the development of psychiatric disorders.AIM To examine the level of evidence for nutritional psychiatry.METHODS A scoping review was conducted to assess the current state of nutritional psychiatry,including a search for randomized controlled trials(RCTs).RESULTS The review identified a total of seven papers,with many concentrating on the relationship between depression and the gut microbiome.A salient issue that emerged from this review was the paucity of sample size in many studies.The inherent complexity of nutritional studies,characterized by a multitude of potential factors and exposures that often act as confounders,poses significant challenges to the development of effective RCT designs.The analysis revealed that probiotics,though demonstrating efficacy,exhibited a modest effect size.CONCLUSION Conducting RCTs with effective markers is imperative from these studies.The implementation of Mendelian randomization and the investigation of mechanisms in basic research are essential complementary approaches.展开更多
Purpose:This article aims to determine the percentage of"Sparking"articles among the work of this year’s Nobel Prize winners in medicine,physics,and chemistry.Design/methodology/approach:We focus on under-c...Purpose:This article aims to determine the percentage of"Sparking"articles among the work of this year’s Nobel Prize winners in medicine,physics,and chemistry.Design/methodology/approach:We focus on under-cited influential research among the key publications as mentioned by the Nobel Prize Committee for the 2020 Noble Prize laureates.Specifically,we extracted data from the Web of Science,and calculated the Sparking Indices using the formulas as proposed by Hu and Rousseau in 2016 and 2017.In addition,we identified another type of igniting articles based on the notion in 2017.Findings:In the fields of medicine and physics,the proportions of articles with sparking characteristics share 78.571%and 68.75%respectively,yet,in chemistry 90%articles characterized by"igniting".Moreover,the two types of articles share more than 93%in the work of the Nobel Prize included in this study.Research limitations:Our research did not cover the impact of topic,socio-political,and author’s reputation on the Sparking Indices.Practical implications:Our study shows that the Sparking Indices truly reflect influence of the best research work,so it can be used to detect under-cited influential articles,as well as identifying fundamental work.Originality/value:Our findings suggest that the Sparking Indices have good applicability for research evaluation.展开更多
Many governments in the world reacted to the coronavirus disease 2019 pandemic by swiftly offering stimulus packages to their populations.While public unpreparedness was dramatic,it was not unexpected:many alarms had ...Many governments in the world reacted to the coronavirus disease 2019 pandemic by swiftly offering stimulus packages to their populations.While public unpreparedness was dramatic,it was not unexpected:many alarms had been sounded.Strategies by the federal and various provincial governments of Canada in core sectors predis-posed the country to the current situation and weakened its capacity to respond adequately.This paper reviews the cumulative effects of these strategic orientations:a deficient investment strategy in fundamental science;dis-connect between laboratory work and the country's capacity to produce vaccines and antiviral drugs;the priority of cost efficiency that led to overwhelming dependency on foreign production of medical supplies;and dramatic spending cuts in public health.We will discuss a Mission strategy to exit the crisis that takes a long-term perspec-tive,in which public interest and public health,combined with a strong State leadership,stimulate innovation and collaboration between national and international actors.展开更多
The International Radiation Symposium(IRS) is a quadrennial symposium of the International Radiation Commission(IRC), one of the 11 commissions under the International Association of Meteorology and Atmospheric Scienc...The International Radiation Symposium(IRS) is a quadrennial symposium of the International Radiation Commission(IRC), one of the 11 commissions under the International Association of Meteorology and Atmospheric Sciences(IAMAS).The role of the IRC is to promote fundamental research in atmospheric radiation and its applications to practical problems.展开更多
Graphdiyne(GDY),a rising star of carbon allotrope with sp-/sp?.hybridized one-atom-thick all-carbon two-dimensional(2D)network,has shown numerous unique structure and fascinating properties.Since the first successful ...Graphdiyne(GDY),a rising star of carbon allotrope with sp-/sp?.hybridized one-atom-thick all-carbon two-dimensional(2D)network,has shown numerous unique structure and fascinating properties.Since the first successful synthesis of GDY in 2010,GDY research has made a series of great progresses,and promoted the fundamental researches and practical applications in various fields of chemistry,physics,information science,material science,life science and environmental science and so on.展开更多
Enzymatic biocatalysis harnesses the efficiency, specificity,and environmental friendliness of enzymes to drive innovations in green synthesis, drug development, environmental remediation, and industrial production, m...Enzymatic biocatalysis harnesses the efficiency, specificity,and environmental friendliness of enzymes to drive innovations in green synthesis, drug development, environmental remediation, and industrial production, making it highly significant in both fundamental research and practical applications.展开更多
Handedness-selective chiral transport is an intriguing phenomenon that not only holds signifcant importance for fundamental research but also carries application prospects in fields such as optical communications and ...Handedness-selective chiral transport is an intriguing phenomenon that not only holds signifcant importance for fundamental research but also carries application prospects in fields such as optical communications and sensing.Currently,on-chip chiral transport devices are static,unable to modulate the output modes based on the input modes.This limits both device functionality reconfiguration and information transmission capacity.Here,we propose to use the incident polarization diversity to control the Hamiltonian evolution path,achieving polarization-dependent chiral transport.By mapping the evolution path of TE and TM polarizations onto elaborately engineered double-coupled waveguides,we experimentally demonstrate that different polarizations yield controllable modal outputs.This work combines Multiple-lnput,Multiple-Output,and polarization diversity concepts with chiral transport and challenges the prevailing notion that the modal outputs are fixed to specific modes in chiral transport,thereby opening pathways for the development of on-chip reconfigurable and high-capacity handedness-selective devices.展开更多
文摘Studies on the mechanical behaviour of squeeze-cast SiCw / Al composites have been revjewed. The results show that SiCw / Al composites exhibit improved mechan ical properties and cyclic hard ening. The reasons leading to the above results are discussed. Localized deformation near SiC whiskers plays an important role in the initiation of microcracks in the composites, and the fracture of the composites is caused by the abrupt linking of microcracks
文摘At the end of last year, the editors from Power and Electrical Engineers interviewed Zhou Xiaoxin on "Fundamental Research on Enhancing Operation Reliability for Large-Scale Interconnected Power Grids", a project of "973 Program". Mr. Zhou, the chief engineer of China Electric Power Research Institute(CEPRI) and an academician of Chinese Academy of Sciences, is the chief scientist in charge of this research project.
文摘The Central Committee of the Communist Party of China and the State Council have put forward "the strategy for revitalizing China through science and education" and decided to implement it with the turn of the century. All circles of the society and the broad masses of people i n China are unprecedentedly raising their scientific and technical awareness and so gradually reaching more and more common understanding of the role that fundamental research in natural science has been playing as a cornerstone in the implementation of "the strategy of revitalizing China through science and education".
文摘This article expounds the strategic significance and main tasks of fundamental research, and analyses the situation that the Chinese Academy of Sciences is faced with in its fundamental research, and the measures which should be taken.
基金This work is supported by National Key Research and Development Project(2018YFC1802102,2019YFC1906800)。
文摘Thermal desorption(TD)is a mainstream technology for the remediation of organic compound-contaminated soil.By reviewing the domestic and foreign research on the remediation of organic compound-contaminated soil by TD,this paper systematically introduces the principle,characteristics,and classification of TD.The impact of key operating parameters(such as heating temperature and heating time),certain physical and chemical properties(such as soil texture,moisture content),and external conditions(such as additives and the carrier gas)on the TD process is summarized.Next,pollutants’migration and their transformation processes,as well as the laws governing the TD process,are briefly described.Finally,the prospects of TD,in terms of its future research and development directions,are described,with the aim of providing references for the application and promotion of TD.
文摘The progress in the science of energy utilizations will act crucial effect on the developments of energy science and technology, which will then promote social and economical developments and fulfill requirements for the national strategic objectives. For the sake of sustainable development, a harmonious blend of energy utilizations and environment considerations will become one of the vital topics in the future research area of energy science. It is suggested that clean and high-efficiency utilization of traditional or fossil energy resources, fundamental investigations on the energy and environment theory, renewable energy utilizations, and the development of nuclear energy are selected as priority research areas during the period of the Tenth Five-year Plan of China, according to the development trend of the world energy science and the research background of Chinese energy science, It is expected to promote the interdisciplinary investigations in the science of energy utilizations and provide scientific and technological supports for the development of related advanced high technologies,
基金supported in part by STI 2030-Major Projects under Grant 2022ZD0209200in part by National Natural Science Foundation of China under Grant Nos.62374099+3 种基金in part by the Tsinghua-Toyota Joint Research Fund,in part by Beijing Natural Science Foundation-Xiaomi Innovation Joint Fund(L233009in part by the Daikin Tsinghua Union Program,in part supported by Tsinghua University-Zhuhai Huafa Industrial Share Company Joint Institute for Architecture Optoelectronic Technologies(JIAOT KF202204)in part by Independent Research Program of School of Integrated Circuits,Tsinghua UniversityThis work was also sponsored by CIE-Tencent Robotics X Rhino-Bird Focused Research Program.
文摘Thermal rectification(TR)is a phenomenon akin to electrical rectification.It has a high thermal conductivity(k)in one direction,enabling efficient heat dissipation,as well as a low k in the opposite direction,impeding heat influx.With the rapid development of nanotechnology in recent years,the active control and regulation of heat conduction on the nanoscale has become a critical mission.Graphene,a prominent two-dimensional(2D)material,is highly regarded for its exceptional thermal transport characteristics.There have been studies and achievements both theoretically and experimentally since its discovery.In this review,we establish a bridge between fundamental research and application studies for graphene-based thermal rectifier as follows.Firstly,we summarize the established 2D heat conduction theories and low-dimensional simulation methods.Secondly,we review the progress of experimental techniques and device structures based on 2D theories for graphene-based thermal rectifier.Then,we discuss several applications of thermal rectifier,including thermal logic circuits and thermoelectric power generation system.Finally,we present the potential applications of graphene-based thermal rectifiers previously unexplored,such as microelectronic thermal management and thermal decoupling for flexible equipment.We hope that advancements in morphology and fabrication techniques will lead to widespread use of graphene-based thermal rectifiers in various thermal systems to solve diverse thermal management problems in the near future.
文摘The journal Chemical Research in Chinese Universities is a comprehensive academic journal in the field of chemistry,published bimonthly since 1984.The journal publishes research articles,letters/communications and reviews written by faculty members,researchers and postgraduates in universities,colleges and research institutes all over China and overseas.It reports the latest and the most creative results of important fundamental research in all aspects of chemistry and of developments with significant consequences across sub-disciplines.This journal is sponsored by Jilin University and mandated by the Ministry of Education of P.R.China.
文摘The journal Chemical Research in Chinese Universities is a comprehensive academic journal in the field of chemistry,published bimonthly since 1984.The journal publishes research articles,letters/communications and reviews written by faculty members,researchers and postgraduates in universities,colleges and research institutes all over China and overseas.It reports the latest and the most creative results of important fundamental research in all aspects of chemistry and of developments with significant consequences across sub-disciplines.This journal is sponsored by Jilin University and mandated by the Ministry of Education of P.R.China.
文摘people pay more attention to the evaluation and research on Big Science.However,Little Science is the most suitable and inno vative science system that can produce original innovation.University-based research was studied as an example.It was proposed that Little Science should receive more attention.Several measures were also suggested to optimize the system of Little Science.
文摘Objective Pharmacopoeias regulate the manufacture of potentised pharmaceutical preparations used in different branches of complementary and integrative medicine.The physicochemical properties and biological activity of these preparations are often investigated in preclinical research,yet no guidelines for experimental research currently exist in this area.The present PrePoP guidelines aim to provide recommendations to promote high-quality,statistically sound,and reproducible preclinical research on potentised preparations.Methods Input was gathered from researchers nominated by the relevant scientific societies using a simplified Delphi consensus approach covering the most relevant aspects of basic research methodology in the field including appropriate controls,sample preparation and handling,and statistics.After three rounds of feedback,a consensus was finally reached on the most important aspects and considerations for conducting high-quality research on potentised preparations.Results We present a series of recommendations on a range of topics including experimental controls,system stability,blinding and randomisation,environmental influences,and procedures for the preparation of potentised samples and controls,and we address some specific challenges of this research field.Conclusion This expert consensus process resulted in a robust set of methodological guidelines for research on potentised preparations and provides a valuable framework that will inform and improve the quality of subsequent research in this emerging field.
文摘ANNUAL SPECIAL|CAS Research 2024 in Retrospect The year 2024 witnessed a series of important breakthroughs in fundamental research made by scientists at the Chinese Academy of Sciences(CAS).As a special presentation,BCAS takes a retrospective overview on some milestone events and outstanding discoveries in the past year.
文摘BACKGROUND Nutritional psychiatry is a rapidly expanding field of research,with mounting evidence suggesting that nutritional factors may play a role in the development of psychiatric disorders.AIM To examine the level of evidence for nutritional psychiatry.METHODS A scoping review was conducted to assess the current state of nutritional psychiatry,including a search for randomized controlled trials(RCTs).RESULTS The review identified a total of seven papers,with many concentrating on the relationship between depression and the gut microbiome.A salient issue that emerged from this review was the paucity of sample size in many studies.The inherent complexity of nutritional studies,characterized by a multitude of potential factors and exposures that often act as confounders,poses significant challenges to the development of effective RCT designs.The analysis revealed that probiotics,though demonstrating efficacy,exhibited a modest effect size.CONCLUSION Conducting RCTs with effective markers is imperative from these studies.The implementation of Mendelian randomization and the investigation of mechanisms in basic research are essential complementary approaches.
基金the National Natural Science Foundation of China Grant numbers:71974167 and 71573225。
文摘Purpose:This article aims to determine the percentage of"Sparking"articles among the work of this year’s Nobel Prize winners in medicine,physics,and chemistry.Design/methodology/approach:We focus on under-cited influential research among the key publications as mentioned by the Nobel Prize Committee for the 2020 Noble Prize laureates.Specifically,we extracted data from the Web of Science,and calculated the Sparking Indices using the formulas as proposed by Hu and Rousseau in 2016 and 2017.In addition,we identified another type of igniting articles based on the notion in 2017.Findings:In the fields of medicine and physics,the proportions of articles with sparking characteristics share 78.571%and 68.75%respectively,yet,in chemistry 90%articles characterized by"igniting".Moreover,the two types of articles share more than 93%in the work of the Nobel Prize included in this study.Research limitations:Our research did not cover the impact of topic,socio-political,and author’s reputation on the Sparking Indices.Practical implications:Our study shows that the Sparking Indices truly reflect influence of the best research work,so it can be used to detect under-cited influential articles,as well as identifying fundamental work.Originality/value:Our findings suggest that the Sparking Indices have good applicability for research evaluation.
文摘Many governments in the world reacted to the coronavirus disease 2019 pandemic by swiftly offering stimulus packages to their populations.While public unpreparedness was dramatic,it was not unexpected:many alarms had been sounded.Strategies by the federal and various provincial governments of Canada in core sectors predis-posed the country to the current situation and weakened its capacity to respond adequately.This paper reviews the cumulative effects of these strategic orientations:a deficient investment strategy in fundamental science;dis-connect between laboratory work and the country's capacity to produce vaccines and antiviral drugs;the priority of cost efficiency that led to overwhelming dependency on foreign production of medical supplies;and dramatic spending cuts in public health.We will discuss a Mission strategy to exit the crisis that takes a long-term perspec-tive,in which public interest and public health,combined with a strong State leadership,stimulate innovation and collaboration between national and international actors.
文摘The International Radiation Symposium(IRS) is a quadrennial symposium of the International Radiation Commission(IRC), one of the 11 commissions under the International Association of Meteorology and Atmospheric Sciences(IAMAS).The role of the IRC is to promote fundamental research in atmospheric radiation and its applications to practical problems.
文摘Graphdiyne(GDY),a rising star of carbon allotrope with sp-/sp?.hybridized one-atom-thick all-carbon two-dimensional(2D)network,has shown numerous unique structure and fascinating properties.Since the first successful synthesis of GDY in 2010,GDY research has made a series of great progresses,and promoted the fundamental researches and practical applications in various fields of chemistry,physics,information science,material science,life science and environmental science and so on.
文摘Enzymatic biocatalysis harnesses the efficiency, specificity,and environmental friendliness of enzymes to drive innovations in green synthesis, drug development, environmental remediation, and industrial production, making it highly significant in both fundamental research and practical applications.
基金National Natural Science Foundation of China(Grant No.12474382)National Key Research and Development Project of China(Grant No.2024YFA1209302)+1 种基金Science,Technology and Innovation Commission of Shenzhen Municipality(Grant No.JCYJ20220530161010023)Key Laboratory of High-Temperature Electromagnetic Materials and Structure of MOE,Wuhan University of Science and Technology(GrantNo.KB202501).
文摘Handedness-selective chiral transport is an intriguing phenomenon that not only holds signifcant importance for fundamental research but also carries application prospects in fields such as optical communications and sensing.Currently,on-chip chiral transport devices are static,unable to modulate the output modes based on the input modes.This limits both device functionality reconfiguration and information transmission capacity.Here,we propose to use the incident polarization diversity to control the Hamiltonian evolution path,achieving polarization-dependent chiral transport.By mapping the evolution path of TE and TM polarizations onto elaborately engineered double-coupled waveguides,we experimentally demonstrate that different polarizations yield controllable modal outputs.This work combines Multiple-lnput,Multiple-Output,and polarization diversity concepts with chiral transport and challenges the prevailing notion that the modal outputs are fixed to specific modes in chiral transport,thereby opening pathways for the development of on-chip reconfigurable and high-capacity handedness-selective devices.
