first let me know in what solution you etch the silicon. Than after i can give you the exact value of the tharmal expansion coeffcient. On 14/11/06, Miyakawa, Natsukiwrote: > > Dear all, > > does anyone know the thermal expansion coefficient and specific heat of > porous silicon? I know they are strongly dependent on the porosity, so the > data for some specific parameters or rough estimation would also help. > I would appreciate any informations and suggestions from you.