ワインの涙の秘密

抄録

The tears of wine are an effect caused by capillary phenomenon and the mechanism has been discussed mainly on alcohol concentration. However, there are few researches discussed on wine glass materials. In our series of research, the effect of wine glass materials on tears of wine is discussed by using Japanese ceramic cups RyosoKairagi. On RyusoKairagi we can see the pattern like scratched trace by dragon"s nail, caused by different thermal expansions between brawn color base and white glaze material. In this study three types of ceramic cups (W, H and K) are found which have different effects of the tears of wine. Also, dynamic retreat contact angle measuring method is applied on the surfaces, and the relation between the tears of wine and dynamic contact angle is discussed.