to whom this may concern,
                         my name is tony sarros and i am a fourth year
electrical
and electronic engineering student at the university of adelaide, australia.
i am currently doing a project on electrostatic wobble micromotors and are
having
problems constructing one. we are currently in the process of fabricating a
conical wobble motor using aluminium. this allows us to anodise the aluminium
to be used as an insulator between segments on the stator. however, we are
obtaining
inconsistent results using the anodising technique with the insulator thickness
and breaks down at 500V. we leave the aluminium much longer during anodising
hoping it would withstand the 1000V goal but for some reason this does not
happen.
when we anodise flat plates on the other hand for 40 min, it doesn't break down
at 1000V. we need it to be capable of withstanding 1000V as this is the voltage
we are going to use for this motor(actually 800V). do you recommend using
aluminium
(dielectric constant of 8.4) for these motors, 12mm by 12mm in size or some
other material that we can coat with a higher dielectic coating??

regards,
tony sarros


__________________________________________________
Mr. Tony Sarros
4th Year Student
Department of Electrical & Electronic Engineering
The University of Adelaide
Adelaide, South Australia 5005
Tel: 0413 056 079
E-mail: tony.sarros@student.adelaide.edu.au