设计了一种简易数字控制红外通信装置,系统硬件部分由红外发射电路、红外接收电路和中转电路3部分组成。系统以STM32F051C4为控制核心,以红外线为载体,采用PWM调制技术、曼彻斯特编码方式,实现了语音和温度信号的实时传输。系统设计完...设计了一种简易数字控制红外通信装置,系统硬件部分由红外发射电路、红外接收电路和中转电路3部分组成。系统以STM32F051C4为控制核心,以红外线为载体,采用PWM调制技术、曼彻斯特编码方式,实现了语音和温度信号的实时传输。系统设计完成后经过实验测试,在输入800 Hz的正弦信号,输出电压有效值不低于0.4 V时,红外光发射电路与红外光接收电路之间的传输距离最大为4 m,输出的噪声电压小于40 m V;电路最大供电电流不超过20 m A。展开更多
Silver-based quantum dots(QDs)such as Ag2S,Ag2Se,and Ag2Te,which emit in the second near-infrared window(NIR-II,900–1700 nm),have attracted great research interest due to their prominent optical properties and eco-fr...Silver-based quantum dots(QDs)such as Ag2S,Ag2Se,and Ag2Te,which emit in the second near-infrared window(NIR-II,900–1700 nm),have attracted great research interest due to their prominent optical properties and eco-friendly compositions.Over the past decade,the controllable synthesis,bandgap modulation,and fluorescence improvement of NIR-II Ag-based QDs have greatly promoted their practical applications.In this review,we summarize the development process and latest achievements of NIR-II Ag-based QDs,covering major synthesis techniques for fabricating NIR-II Ag-based QDs,general methods for improving their fluorescence properties and recent advances in the applications of NIR-II Ag-based QDs from bioimaging to optoelectronic devices.Finally,we discuss the challenges and prospects of NIR-II Ag-based QDs in their optical properties and applications.This review aims to present synthesis and modification strategies and future application prospects for NIR-II Ag-based QDs,providing guidance for the design and integration of fluorescent probes in NIR-II window.展开更多
文摘设计了一种简易数字控制红外通信装置,系统硬件部分由红外发射电路、红外接收电路和中转电路3部分组成。系统以STM32F051C4为控制核心,以红外线为载体,采用PWM调制技术、曼彻斯特编码方式,实现了语音和温度信号的实时传输。系统设计完成后经过实验测试,在输入800 Hz的正弦信号,输出电压有效值不低于0.4 V时,红外光发射电路与红外光接收电路之间的传输距离最大为4 m,输出的噪声电压小于40 m V;电路最大供电电流不超过20 m A。
基金supported the National Natural Science Foundation of China(Nos.21934007 and 22271308)Natural Science Foundation of Jiangsu province(Nos.BK20222016 and BE2022753)China Postdoctoral Science Foundation(Nos.2022M720105 and 2023T160470).
文摘Silver-based quantum dots(QDs)such as Ag2S,Ag2Se,and Ag2Te,which emit in the second near-infrared window(NIR-II,900–1700 nm),have attracted great research interest due to their prominent optical properties and eco-friendly compositions.Over the past decade,the controllable synthesis,bandgap modulation,and fluorescence improvement of NIR-II Ag-based QDs have greatly promoted their practical applications.In this review,we summarize the development process and latest achievements of NIR-II Ag-based QDs,covering major synthesis techniques for fabricating NIR-II Ag-based QDs,general methods for improving their fluorescence properties and recent advances in the applications of NIR-II Ag-based QDs from bioimaging to optoelectronic devices.Finally,we discuss the challenges and prospects of NIR-II Ag-based QDs in their optical properties and applications.This review aims to present synthesis and modification strategies and future application prospects for NIR-II Ag-based QDs,providing guidance for the design and integration of fluorescent probes in NIR-II window.
