Development of a technique for measuring static electricity distribution using focused ultrasound waves and an induced electric field |
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Institution: | 1. Department of Epidemiology, School of Public Health, Zhengzhou University, Zhengzhou, Henan, China;2. Department of Toxicology, Henan Center for Disease Control and Prevention, Zhengzhou, Henan, China |
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Abstract: | A novel method is proposed for non-contact measurement of static electricity distribution on a surface using focused ultrasound to excite movement of the charge. The focused ultrasound is generated by controlling individually the phases of 285 airborne ultrasound transducers, and it was demonstrated local excitation could be measured. An electric field is induced by local excitation of a charged object. The electric field intensity and phase are related to the surface potential and electrical polarity of the object, respectively. It is possible to measure static electricity distribution over an entire object surface by scanning the position of the focused ultrasound. |
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Keywords: | Static electricity Electric field Focused ultrasound Measuring technology Distribution |
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