医用监护仪在疾病治疗和抢救中的重要价值已得到广泛认知，其应用范围也越来越广。随着各类专科加强监护病房(intensive care unit，ICU)的不断发展，对监护仪功能的要求也日渐增多。目前国内医院普遍使用的床旁六参数(心电、呼吸、体...医用监护仪在疾病治疗和抢救中的重要价值已得到广泛认知，其应用范围也越来越广。随着各类专科加强监护病房(intensive care unit，ICU)的不断发展，对监护仪功能的要求也日渐增多。目前国内医院普遍使用的床旁六参数(心电、呼吸、体温、血氧、血压和脉搏等)监护仪已不能完全满足发展的需要。无线医用监护仪，特别是组合式无线监护仪由于具有远距离调控、多功能组合和无干扰性长时间监测等优势，显示出了良好的发展前景。展开更多
Programmable metasurface enables controlling electromagnetic (EM) waves in real time. By programming the states of active device embedded in metasurface element, the EM properties of the digital metasurface can be cha...Programmable metasurface enables controlling electromagnetic (EM) waves in real time. By programming the states of active device embedded in metasurface element, the EM properties of the digital metasurface can be changed quickly without redesigning their structures. However, large numbers of long-distance wires are required to connect the programmable metasurface to provide the coded signals from field programmable gate array (FPGA) when controlling the metasurface at a long distance, which is complicated and inconvenient. Here, we propose an infrared-controlled programmable metasurface that can be programmed remotely. The infrared transceiver is able to switch the coding sequences stored in the FPGA controller, thus controlling the voltage on the varactors integrated in the metasurface. Experiment is performed at microwave frequencies, and the measured results verify that the scattering beams of the metasurface sample can be changed remotely by using infrared ray. The proposed infrared-controlled programmable metasurface opens up avenues for constructing a new class of remotely-tuning dynamic metasurfaces.展开更多
文摘医用监护仪在疾病治疗和抢救中的重要价值已得到广泛认知，其应用范围也越来越广。随着各类专科加强监护病房(intensive care unit，ICU)的不断发展，对监护仪功能的要求也日渐增多。目前国内医院普遍使用的床旁六参数(心电、呼吸、体温、血氧、血压和脉搏等)监护仪已不能完全满足发展的需要。无线医用监护仪，特别是组合式无线监护仪由于具有远距离调控、多功能组合和无干扰性长时间监测等优势，显示出了良好的发展前景。
基金This work was supported by the National Key Research and Development Program of China(2017YFA0700201,2017YFA0700203 and 2016YFC0800401)National Natural Science Foundation of China(61890544,61522106,61631007,61571117,61731010,61735010,61722106,61701107,and 61701108)+3 种基金Postgraduate Research&Practice Innovation Program of Jiangsu Province(KYCX19_0081)Scientific Research Foundation of Graduate School of Southeast University(YBPY1938)Foundation of National Excellent Doctoral Dissertation of China(201444)the 111 Project(111-2-05).
文摘Programmable metasurface enables controlling electromagnetic (EM) waves in real time. By programming the states of active device embedded in metasurface element, the EM properties of the digital metasurface can be changed quickly without redesigning their structures. However, large numbers of long-distance wires are required to connect the programmable metasurface to provide the coded signals from field programmable gate array (FPGA) when controlling the metasurface at a long distance, which is complicated and inconvenient. Here, we propose an infrared-controlled programmable metasurface that can be programmed remotely. The infrared transceiver is able to switch the coding sequences stored in the FPGA controller, thus controlling the voltage on the varactors integrated in the metasurface. Experiment is performed at microwave frequencies, and the measured results verify that the scattering beams of the metasurface sample can be changed remotely by using infrared ray. The proposed infrared-controlled programmable metasurface opens up avenues for constructing a new class of remotely-tuning dynamic metasurfaces.
