The performance of the photodetector is significantly impacted by the inherent surface faults in GaAs nanowires(NWs).We combined three-dimensional(3D)gallium arsenide nanowires with zero-dimensional(0D)WS_(2)quantum d...The performance of the photodetector is significantly impacted by the inherent surface faults in GaAs nanowires(NWs).We combined three-dimensional(3D)gallium arsenide nanowires with zero-dimensional(0D)WS_(2)quantum dot(QDs)materials in a simple and convenient way to form a heterogeneous structure.Various performance enhancements have been realized through the formation of typeⅡenergy bands in heterostructures,opening up new research directions for the future development of photodetector devices.This work successfully fabricated a high-sensitivity photodetector based on WS_(2)QDs/GaAs NWs heterostructure.Under 660 nm laser excitation,the photodetector exhibits a responsivity of 368.07 A/W,a detectivity of 2.7×10^(12)Jones,an external quantum efficiency of 6.47×10^(2)%,a low-noise equivalent power of 2.27×10^(-17)W·Hz-1/2,a response time of 0.3 s,and a recovery time of 2.12 s.This study provides a new solution for the preparation of high-performance GaAs detectors and promotes the development of optoelectronic devices for GaAs NWs.展开更多
Several studies reported the impact of cardiac surgical operation on morbidity and mortality in renal transplant recipients as well as on renal graft function and safety and effect of immunosuppressant medication.1-3 ...Several studies reported the impact of cardiac surgical operation on morbidity and mortality in renal transplant recipients as well as on renal graft function and safety and effect of immunosuppressant medication.1-3 However,few data are available about the risk and immunosuppressant medication in patients who undergo cardiac surgical operation after successful renal transplantation,especially in patients who underwent offpump coronary artery bypass grafting （CABG） with previous renal transplantation.This research provides important insights into the immunosuppressive management of a patient requiring valve replacement or CABG after renal transplantation during the perioperative period.展开更多
文摘The performance of the photodetector is significantly impacted by the inherent surface faults in GaAs nanowires(NWs).We combined three-dimensional(3D)gallium arsenide nanowires with zero-dimensional(0D)WS_(2)quantum dot(QDs)materials in a simple and convenient way to form a heterogeneous structure.Various performance enhancements have been realized through the formation of typeⅡenergy bands in heterostructures,opening up new research directions for the future development of photodetector devices.This work successfully fabricated a high-sensitivity photodetector based on WS_(2)QDs/GaAs NWs heterostructure.Under 660 nm laser excitation,the photodetector exhibits a responsivity of 368.07 A/W,a detectivity of 2.7×10^(12)Jones,an external quantum efficiency of 6.47×10^(2)%,a low-noise equivalent power of 2.27×10^(-17)W·Hz-1/2,a response time of 0.3 s,and a recovery time of 2.12 s.This study provides a new solution for the preparation of high-performance GaAs detectors and promotes the development of optoelectronic devices for GaAs NWs.
文摘Several studies reported the impact of cardiac surgical operation on morbidity and mortality in renal transplant recipients as well as on renal graft function and safety and effect of immunosuppressant medication.1-3 However,few data are available about the risk and immunosuppressant medication in patients who undergo cardiac surgical operation after successful renal transplantation,especially in patients who underwent offpump coronary artery bypass grafting （CABG） with previous renal transplantation.This research provides important insights into the immunosuppressive management of a patient requiring valve replacement or CABG after renal transplantation during the perioperative period.
