The invention discloses a bistable state spherical surface composite cantilever piezoelectric power generation device. The device comprises a beam frame and a spherical shell. A circular opening is formed in the bottom of the shell. The beam frame and the shell are fixed to a base. The ...
Self-adapting conformal antennas for changing spherical surfaces are investigated in this work. More specifically, the theory on the relationship between the radius of the spherical surface, element spacing of the conformal array and required phase compensation is developed. Initially, for theoretical val...
Using slanting impact contact model of a rigid spherical surface and an elastic coating,considering coupling between normal and shear surface forces caused... YJ Guo,J Yin,JX He,... - 《Journal of Vibration & Shock》 被引量: 12发表: 2011年 Combined wind and wave power generator Combined wi...
Thesaurus Medical Encyclopedia Wikipedia Related to spherical aberration:coma aberration spherical aberration Parallel light rays passing through a lens with a spherical surface focus at different points depending on whether they pass through the lens closer to the edge or closer to the center. ...
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(19) applied to the plano or spherical reference surface (20) and having a transmittance such that there will be only two beam interference and the contrast of the two beam interference fringes between the reflected reference wavefront (25R) and the reflected test wavefront (25T) will be ...
Then, two of such semispherical bodies 4 are joined together to form a globe. Thus, a hollow spherical body with printed surface is obtained. Its strength can be increased by providing a reinforceing body in the hollow spherical body. 展开 ...
A photothermal film (PTF) with densely assembled gold nanoparticle-fixed beads on a polymer substrate is fabricated. Remarkably, a temperature rise higher than 40 °C is achieved in the PTF with only 100 seconds of artificial solar irradiation, and the output power of the thermoelectric device wa...
power each year to keep the global temperature rise below 2 °C above preindustrial levels1. Located in the monsoon climate zone and shaped by a 3260 km-long coastline, Vietnam is considered a country with great potential for offshore wind power in Asia in particular and the world in ...