Production of large-area electrets
Charge injection techniques are used in two methods of producing low cost homocharged electrets.
Pillai, P. K. C.↗
Engineering topics
Pillai, P. K. C.
Publications and source records attributed to Pillai, P. K. C..
Fabrication and applications of electrets
Permanently charged dielectrics can be made less expensively, faster, and more effectively using improved techniques and materials. Methods include charge injection, Tesla-coil charging, and molten spray. Possible uses include pollution control, low-power sensors, and illumination control.
Pillai, P. K. C.↗
Photoinduced polarization properties of LiIO3 single crystal
Photoinduced polarization is achieved in a lithium iodate single crystal by the simultaneous application of a dc field and illumination from a uv source. The dark depolarization and photodepolarization current decay characteristics of the polarized samples have been studied in detail in this paper.
Pillai, P. K. C.↗
Investigations of electret as a contamination control device
Thermoelectrets of polymers with stable surface charge on either side have been found to attract ions and charged particles to their surfaces. To assess their applicability to the control of atmospheric contamination, polytetraethylene (teflon) electrets are exposed to vapors coming from volatile mixtures over periods up to 90 min. Use is made of mass spectrometry for the analysis of teflon electret characteristics. It is found that even small quantities of the liquids in the mixture gives its characteristic mass spectra and that the peak height represents a measure for the quantity of the material collected over the electret surface, with the collected quantity being proportional to the duration of exposure.
Pillai, P. K. C.↗