Recent content by nabs16

Yes of course. Sorry I should have posted the links in the first message. http://ieeexplore.ieee.org/document/1428041/ https://www.sciencedirect.com/science/article/pii/S0924424705006151

Hi, I have to make a report on an energy harvesting system using piezolectric materials by comparing two methods each other which are: the standard technique (rectifier bridge+filtering capacitance) and the nonlinear technique, by adding to the standard device a switch and an inductor in...

Thanks guys ;)

It makes sense. Thanks for the explanation but If the polarization of ferroelectric materials is near to zero before applying an electric field, what is the difference between a classical piezoelectric material (such as quartz) and a ferroelectric material ?

Hello every one. Ferroelectric materials have spantaneous polarization but i read in many articles that these ceramics are polarized by applying an electric field. Why polarize ceramics that are already polarized ? Thanks.

I take note. Thank you ;)

Hello everyone (and sorry for my average english), I have to make a report on an energy harvesting system from vibrations with piezoelectric elements. During my research, i always read that there two cases in a piezoelectric harvesting system which are : weakly coupled strucutre and strongly...