I did ask this question some time ago but now the membership has increased I'll just try again if thats ok..!
Is there anyone involved in piezo electrics - especially in Japan where I understand its very (or at least further) advanced than here in the UK and anywhere else?
I you would like to learn something specific about the piezoelectric ceramics industry in Japan, a very good resource is the Mizuho Research Institute (http://www.mizuho-ri.co.jp/). They provide custom market research about Japan's green technologies and businesses, and can probably find out the answers to most of your questions.