Biosensors based on organic electrochemical transistors(OECTs)have been a research highlight in recent years owing to their remarkable biocompatibility,low operating voltage,and substantial signal amplification capabi...Biosensors based on organic electrochemical transistors(OECTs)have been a research highlight in recent years owing to their remarkable biocompatibility,low operating voltage,and substantial signal amplification capability.Especially,as an emerging fundamental device for biosensing,OECTs show great potential for pH,ions,molecules,and biomarker sensing.This review highlights the research progress of biomolecule sensors based on OECTs,focusing on recent publications in the past 5 years.Specifically,OECT-based biomolecule sensors for small molecules(glucose,dopamine,lactate,etc.that act as signals or effectors),and macromolecules(DNA,RNA,proteins,etc.that are often used as markers in physiology and medicine),are summarized.Additionally,emerging technologies and materials used to enhance sensitivity,detection limits,and detection ranges are described comprehensively.Last,aspects of OECT-based biomolecule sensors that need further improvement are discussed along with future opportunities and challenges.展开更多
Similar to other heavy flavor mesons,the weak decays of D*_((s))mesons can provide a platform to verify the standard model,explore new physics,and understand the mechanisms of weak interactions.At present,the theoreti...Similar to other heavy flavor mesons,the weak decays of D*_((s))mesons can provide a platform to verify the standard model,explore new physics,and understand the mechanisms of weak interactions.At present,the theoretical and experimental studies on D*_((s))mesons are relatively limited.In addition to the dominant electromagnetic decays,the D*_((s)) weak decays should be feasible to explore the D*_((s)) mesons.In this study,we used the covariant lit-front quark model to study the form factors o the transitions D*_((s)) →π,K,η_(q,s),and then calculated the branching ratios of the semi-leptonic decays D*_((s))→Pe+ve and the non-leptonic decays D*_((s))→PP,PV with P =π,K,η^((,)),V=ρ,K*,Φ,and e=e,μ.The channels D*_(s)^(+)→ηe+ve and D*_(s)^(+)→ηρ^(+) possess the largest branching ratios,which can reach an order of 10^(-6) among these decays,and are most likely to be accessible in experiments at future high-luminosity colliders.Furthermore,we predict and discuss the longitudinal polarization fraction f_(L) and the forwardbackward asymmetry A_(FB) for the considered semi-leptonic D*_(s)decays.展开更多
The semileptonic and nonleptonic decays of the b-flavor vector mesons B_(u,d,s)^(*) and B_(c)^(*) are investigated within the covariant light-front quark model(CLFQM).By calculating the form factors of the transitions...The semileptonic and nonleptonic decays of the b-flavor vector mesons B_(u,d,s)^(*) and B_(c)^(*) are investigated within the covariant light-front quark model(CLFQM).By calculating the form factors of the transitions B_(u,d,s)^(*)→P under the CLFQM,with P denoting a pseudoscalar meson,i.e.,π,K,η_(c)(1S,2S),D_((s)),B_((s)),we predict and discuss several physical observables,including the branching ratios,polarization fractions f_(L),f_(∥),and forward-backward asymmetries A_(FB).The total widths of the single-photon radiative decay channels for these b-flavor vector mesons are estimated using their partial widths.In these considered decays,one can find that the semileptonic decays B_(s)_(*0)→D_(s)^(-)l′+ν_(l′)and B_(c)^(*+)→B_(s)^(0)l′+ν_(l′),η_(c)l′+ν_(l′),with l′being e orτ,and the nonleptonic channels B*+c→B0sπ+,B0sρ+have the largest branching ratios,which can reach up to the 10^(-7) order,and are most likely to be accessible at the future high-luminosity LHCb and Belle-II experiments.展开更多
基金supported by the National Key R&D Program of China(2023YFC2411800)the National Natural Science Foundation of China(62303094,62273073)+5 种基金the National Key R&D Program of China(2024YFB3211600,2022YFE0134800)the Natural Science Foundation of Sichuan(2025ZNSFSC0515)the Key Research Project of the Henan Educational Committee of China(24A413001)the Aeronautical Science Foundation of China(20230024080002)Chengdu Science and Technology Bureau(2023-YF06-00028-HZ)the Fundamental Research Funds for the Central Universities(ZYGX2024XJ029).
文摘Biosensors based on organic electrochemical transistors(OECTs)have been a research highlight in recent years owing to their remarkable biocompatibility,low operating voltage,and substantial signal amplification capability.Especially,as an emerging fundamental device for biosensing,OECTs show great potential for pH,ions,molecules,and biomarker sensing.This review highlights the research progress of biomolecule sensors based on OECTs,focusing on recent publications in the past 5 years.Specifically,OECT-based biomolecule sensors for small molecules(glucose,dopamine,lactate,etc.that act as signals or effectors),and macromolecules(DNA,RNA,proteins,etc.that are often used as markers in physiology and medicine),are summarized.Additionally,emerging technologies and materials used to enhance sensitivity,detection limits,and detection ranges are described comprehensively.Last,aspects of OECT-based biomolecule sensors that need further improvement are discussed along with future opportunities and challenges.
基金the National Natural Science Foundation of China(11347030)the Program of Science and Technology Innovation Talents in Universities of Henan Province(14HASTIT037)the Natural Science Foundation of Henan Province(232300420116,252300421302)。
文摘Similar to other heavy flavor mesons,the weak decays of D*_((s))mesons can provide a platform to verify the standard model,explore new physics,and understand the mechanisms of weak interactions.At present,the theoretical and experimental studies on D*_((s))mesons are relatively limited.In addition to the dominant electromagnetic decays,the D*_((s)) weak decays should be feasible to explore the D*_((s)) mesons.In this study,we used the covariant lit-front quark model to study the form factors o the transitions D*_((s)) →π,K,η_(q,s),and then calculated the branching ratios of the semi-leptonic decays D*_((s))→Pe+ve and the non-leptonic decays D*_((s))→PP,PV with P =π,K,η^((,)),V=ρ,K*,Φ,and e=e,μ.The channels D*_(s)^(+)→ηe+ve and D*_(s)^(+)→ηρ^(+) possess the largest branching ratios,which can reach an order of 10^(-6) among these decays,and are most likely to be accessible in experiments at future high-luminosity colliders.Furthermore,we predict and discuss the longitudinal polarization fraction f_(L) and the forwardbackward asymmetry A_(FB) for the considered semi-leptonic D*_(s)decays.
基金partly supported by the National Natural Science Foundation of China(11347030)the Program for Science and Technology Innovation Talents in Universities of Henan Province(14HASTIT037)the Natural Science Foundation of Henan Province,China(232300420116)。
文摘The semileptonic and nonleptonic decays of the b-flavor vector mesons B_(u,d,s)^(*) and B_(c)^(*) are investigated within the covariant light-front quark model(CLFQM).By calculating the form factors of the transitions B_(u,d,s)^(*)→P under the CLFQM,with P denoting a pseudoscalar meson,i.e.,π,K,η_(c)(1S,2S),D_((s)),B_((s)),we predict and discuss several physical observables,including the branching ratios,polarization fractions f_(L),f_(∥),and forward-backward asymmetries A_(FB).The total widths of the single-photon radiative decay channels for these b-flavor vector mesons are estimated using their partial widths.In these considered decays,one can find that the semileptonic decays B_(s)_(*0)→D_(s)^(-)l′+ν_(l′)and B_(c)^(*+)→B_(s)^(0)l′+ν_(l′),η_(c)l′+ν_(l′),with l′being e orτ,and the nonleptonic channels B*+c→B0sπ+,B0sρ+have the largest branching ratios,which can reach up to the 10^(-7) order,and are most likely to be accessible at the future high-luminosity LHCb and Belle-II experiments.
