Prof. Matsuyama of Soka University, Tokyo, Japan

Subjects related to "static" electricity involve the study of charge or charged matter, where charges move very slowly, although the exact criteria for this slowness is not well-defined. When charge is accumulated, it can lead to an increase in electrostatic potential, potentially causing gas discharge. Therefore, the scientific community studying electrostatics covers topics such as charge, charged matter, gas discharge, and methods of measurement. 

Elevated electrostatic potential can sometimes pose hazards in industrial processes and everyday situations, such as experiencing a static shock when touching a doorknob. On the other hand, the behavior of charged matter can be controlled using external electric fields, the concept utilized in areas like electroprecipitation and electrophotography. Charging mechanisms, especially in dry processes, are often divided into ion impact and tribocharging. Ion impact charging requires specific configurations of gas discharge, while the mechanism behind tribocharging remains unclear.

Our goal with this tutorial is to introduce our audience to the labyrinth. It will be important to note that no one starts addressing subjects on electrostatics with skepticism towards Coulomb’s law. Instead, we aim to clarify what is already known and what areas are still being explored.

Biography:

Dr. Tatsushi Matsuyama is a professor at Faculty of Science and Engineering, Soka University, Tokyo, Japan. His educational background is chemical engineering, and he has been working in the field of powder technology, especially on the subject of tribo-electrostatic charging of powder. He is a founder of a small international workshop STEP: Static-Tribo-Electricity of Powder. From 2024 he is the chairperson of ISO/TC 24/SC 4: Particle Characterization.

Email:

Address:Soka University, 1 Chome-236 Tangimachi, Hachioji, Tokyo, Japan, 192-8577