From the same author https://doi.org/10.2514/6.2019-0869 https://doi.org/10.2514/6.2019-0869 , 2019 Salvatore Cezar Pais > It is important for the PZT coating

From the same author https://doi.org/10.2514/6.2019-0869 https://doi.org/10.2514/6.2019-0869 , 2019 Salvatore Cezar Pais > It is important for the PZT coating to undergo a polarizing (poling) treatment prior to RTSC enablement, so that optimal domain alignment is obtained within the ceramic coating, by subjecting the coating to a strong dc current electric field, slightly below the Curie temperature (approx.200 0C, but possibly as high as 360 0C, depending on PZT ceramic composition). Furthermore, to increase the probability of vibration in one particular direction, as well as to alleviate the brittle nature of the ceramic material, it may be necessary to make the 'metallic' wire coating out of a composite PZT and highly conductive polymer, such as p-Terphenyl [4]. Another option is to sandwich the PZT ceramic in between two layers of aluminum, resulting in a wire design which may be planar rather than cylindrical in nature. This composite coating design would amplify piezoelectrically-induced vibrations and possibly render them unidirectional. From LK99 rumors: > At the beginning of 2020, Ji-Hoon Kim continued to do experiments as usual, suddenly he found a huge peak, he repeated the test + looked at his notes. But didn't find any special points. He started looking through the lab videos. He finally realized that the tube of sample came out with cracks on the quartz tube, and he hit his elbow on the table while transferring the sample out to the electronic scale. Introducing oxygen at the right moment + a violent impact would change the structure of the lead apatite crystals being formed. May be something, may be nothing, S.C.Pais: "to increase the probability of vibration in one particular direction" S.C.Pais: "piezoelectrically-induced vibrations [ and possibly render them unidirectional]" LK99: "oxygen at the right moment + violent impact would change the structure of the lead apatite crystals being formed"