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This is due to the piezoelectric properties of BaTiO3. Effectively the capacitor acts as a weak piezo electric speaker. Using a 100V drive voltage [Dan] was able to get 300nm of deflection using ...
However, until now, this process was not viable for piezoelectric thin films. This is because applying a voltage to the substrate does not only accelerate the film‑forming target ions, but also ...
But one Swiss startup says it has developed a piezoelectric catalyst that can eliminate 99 percent of these forever chemicals in wastewater streams and prevent them from entering water supplies.