Adsorption of water molecules on stainless steel surface using null ellipsometry

Abstract

Stainless steel표면의 물분자의 흡착을 연구하기 위해 Null ellipsometry를 이용하였다. 단층박막 모델과 effective medium 이론을 이용하여, 물 분자의 surface coverage를 얻었다. 상대습도 증가에 따른 surface coverage의 변화로부터 stainless steel표면의 물분자의 resident time을 유도할 수 있었다.

Null ellipsometry was employed to study the adsorption of water molecules on stainless steel surface. Using a single layer optical model and effective medium theory, the surface coverage of water molecules was obtained. From the variation of surface coverage upon humidity rise, we could derive the resident time of water molecules on the stainless steel surface. It was estimated as 1O-7sec or longer.