Break junctions are important in generating nanosensors and single molecular devices. The mechanically con- trollable break junction is the most widely used method for a break junction due to its simplicity and stabil...Break junctions are important in generating nanosensors and single molecular devices. The mechanically con- trollable break junction is the most widely used method for a break junction due to its simplicity and stability. However, the bandwidths of traditional devices are limited to about a few hertz. Moreover, when using traditional methods it is hard to allow independent control of more than one junction. Here we propose on-chip thermally controllable break junctions to overcome these challenges. This is verified by using finite element analysis. Adopting microelectromechanical systems produces features of high bandwidth and independent controllability to this new break junction system. The proposed method will have a wide range of applications on on-chip high speed independent controllable and highly integrated single molecule devices.展开更多
集成超级电容串并联电源技术、IGBT精准控制技术、固态直流开关回路切换技术及虚拟仪器测控技术,构建了包含电源系统、回路切换系统、阻抗负载系统及测控系统的完整解决方案。系统可实现电压60~1500 V无级可调、电流4~30 k A精准输出,...集成超级电容串并联电源技术、IGBT精准控制技术、固态直流开关回路切换技术及虚拟仪器测控技术,构建了包含电源系统、回路切换系统、阻抗负载系统及测控系统的完整解决方案。系统可实现电压60~1500 V无级可调、电流4~30 k A精准输出,通电时间控制精度高,各项技术指标达到国际先进水平。成果已成功应用于新能源汽车核心零部件检测领域,为行业提供了可复制的智能化检测案例,推动了新能源汽车产业链的国产化进程与技术升级。展开更多
基金Supported by the National Key Basic Research Program of China under Grant No 2013CB921800the National Natural Science Foundation of China under Grant Nos 11227901,91021005,11274299,11104262 and 10834005the Strategic Priority Research Program(B)of the Chinese Academy of Sciences under Grant No XDB01030400
文摘Break junctions are important in generating nanosensors and single molecular devices. The mechanically con- trollable break junction is the most widely used method for a break junction due to its simplicity and stability. However, the bandwidths of traditional devices are limited to about a few hertz. Moreover, when using traditional methods it is hard to allow independent control of more than one junction. Here we propose on-chip thermally controllable break junctions to overcome these challenges. This is verified by using finite element analysis. Adopting microelectromechanical systems produces features of high bandwidth and independent controllability to this new break junction system. The proposed method will have a wide range of applications on on-chip high speed independent controllable and highly integrated single molecule devices.
文摘集成超级电容串并联电源技术、IGBT精准控制技术、固态直流开关回路切换技术及虚拟仪器测控技术,构建了包含电源系统、回路切换系统、阻抗负载系统及测控系统的完整解决方案。系统可实现电压60~1500 V无级可调、电流4~30 k A精准输出,通电时间控制精度高,各项技术指标达到国际先进水平。成果已成功应用于新能源汽车核心零部件检测领域,为行业提供了可复制的智能化检测案例,推动了新能源汽车产业链的国产化进程与技术升级。
