Vulcanisation is a chemical process that is used to reinforce rubber, and the process makes it suitable for use in a number of products and industries. Both good mixing conditions and filler dispersion are essential to keep high-quality of rubber products; however, they are quite difficult to be evaluated by conventional techniques. Prof Yasuyuki Hirakawa is based at the Department of Electrical and Electronic Engineering, National Institute of Technology (KOSEN), Kurume College. He is working to further evaluate ways to enhance rubber's productivity and performance. This is being done using terahertz (THz) radiation and electrical current, which can evaluate and inspect materials in a non-destructive way.