There are more than thousands of concepts for harvesting wave energy, and energy converters (WECs) diverse in operating principles, design geometries deployment manners, leading to misconvergence WEC technologies. Among numerous devices, the point absorber converter (PAWEC) concept is one simplest, most broad-based promising that has been investigated intensively all over world. However, there ...

A thin electromagnetic band-gap (EBG) absorber is employed to capture the 2-d image of radio-frequency (RF) power distribution. The EBG absorber consists of an array of mushroom unit cells formed on a thin dielectric substrate with a metal backplane, and lumped resistors interconnecting the surface patches of the mushrooms. Around the resonance frequency at which the EBG structure acts as a hig...

Bicycle configuration is not as large as those of motorcycles or automobiles, while it indeed composes a complicated dynamic system. People’s requirements on comfortability, controllability and safety grow higher as the research and development technologies improve. The shock absorber affects the vehicle suspension performances enormously. The absorber takes the vibration energy and releases it...