| abstract |
Low porosity titania forms containing only a small amount of hydroxyl groups and possessing a high refractive index which are property stable regardless of humidity level and which prohibit electrical and gas leakage and optical loss, are obtained in a sol-gel process by rapidly heating to curing temperature, e.g. at a rate of 8000 DEG C./min. One application provides more stable, longer-lasting sol-gel prepared optical interference filters. Other applications provide capacitors with high capacitance and optical planar waveguides. |