The nano films refractive index values changing in the acidic environment studies

Abstract

Nano films produced by the sol-gel technology were now widely used in the different science and technology areas for the effective properties modification of the glass substrates. The composite with such a nano film refractive index value changing after its interaction with the hydrochloric acid solution of the different concentration has been studied in this work. It has been obtained that the process of the nano dimensional film produced from the film-forming solution and acid solution interaction was consists of two mutually opposing effects--film material swelling and dissolution. If the nano film has been dissolved without of the swelling its refractive index was decreased. But the film material under the hydrochloric acid solution action passes through the swelling stage its refractive index increases in proportion of the swelling ratio.