Mechanical automated compression devices are being used in cardiopulmonary resuscitation instead of manual,“hands-on”,rescuer-delivered chest compressions.The-theoretical-advantages include high-quality non-stop com...
A polarization control device was developed using a plasmonic metasurface with the aim of achieving the desired polarization state. In this study, the Ag metal grating structure was fabricated as a plasmonic metasurfa...
This work was supported by the Youth Innovation Promotion Association of the Chinese Academy of Sciences (Grant No. 2019020);the Strategic Priority Research Program of the Chinese Academy of Sciences (Class B) (Grant No. XDB22020000);Informatization Plan of the Chinese Academy of Sciences (Grant No. XXH13506-204).
Bogies are responsible for a significant amount of aerodynamic resistance and noise,both of which negatively affect high-speed train performance and passenger comfort.In the present study,the passive control method is...
An optically addressed liquid crystal modulator for wavefront control of 1053 nm laser beam is reported in this paper.Its working principle, control method and spatial phase modulation capability are mainly introduced...
Project supported by the National Natural Science Foundation of China(No.60123456);the Zhejiang Provincial Natural Science Foundation of China(No.LZ16F010001);the Zhejiang Provincial Public Technology Research Project(No.2016C31070)
This paper proposes a method for broadband and high-efficiency amplification of Doherty power amplifier (DPA) using symmetric devices. In order to achieve the perfect load modulation, the carrier amplifier output ci...
Improving vehicle fuel consumption,performance and aerodynamic efficiency by drag reduction especially in heavy vehicles is one of the indispensable issues of automotive industry.In this work,the effects of adding app...
A friction damper device (FDD) is used for vibration control of an existing steel jacket platform under seismic excitation. First, the damping is presented for vibration mitigation of structures located in seismically...
supported in part by the National "973" Program of China (No.2006CB708310);the National Natural Science Foundation of China (No.60706013);Wuhan National Laboratory for Optoelectronics
We discuss the optimal design of line-tapered multimode interference (MMI) devices using a genetic algorithm (GA). A 1×4 MMI device is designed as a numerical example. Compared with the conventional design based ...