Piezo lighter assembly8/17/2023 ![]() ![]() ![]() By combining their knowledge of pyroelectricity with their understanding of crystal structures and behavior, the Curie brothers demonstrated the first piezoelectric effect by using crystals of tourmaline, quartz, topaz, cane sugar, and Rochelle salt. The direct piezoelectric effect was first seen in 1880, and was initiated by the brothers Pierre and Jacques Curie. The piezoelectric effect also has its use in more mundane applications as well, such as acting as the ignition source for cigarette lighters. It is also the basis of a number of scientific instrumental techniques with atomic resolution, such as scanning probe microscopes (STM, AFM, etc). The piezoelectric effect is very useful within many applications that involve the production and detection of sound, generation of high voltages, electronic frequency generation, microbalances, and ultra fine focusing of optical assemblies. When reversed, an outer electrical field either stretches or compresses the piezoelectric material. ![]() When piezoelectric material is placed under mechanical stress, a shifting of the positive and negative charge centers in the material takes place, which then results in an external electrical field. One of the unique characteristics of the piezoelectric effect is that it is reversible, meaning that materials exhibiting the direct piezoelectric effect (the generation of electricity when stress is applied) also exhibit the converse piezoelectric effect (the generation of stress when an electric field is applied). The word Piezoelectric is derived from the Greek piezein, which means to squeeze or press, and piezo, which is Greek for “push”. Piezoelectric Effect is the ability of certain materials to generate an electric charge in response to applied mechanical stress. ![]()
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