METHOD FOR EVALUATING SURFACE CHARACTERISTICS, CONTACT ANGLE MEASURING SYSTEM, AND GAS-LIQUID INTERFACE OBSERVING DEVICE FOR MEASURING CONTACT ANGLE

摘要

PROBLEM TO BE SOLVED: To provide a method which enables the simple evaluation of the characteristics of the inner surface of a tubular sample, a contact angle measuring system directly used therein, and a gas-liquid interface observing device.;SOLUTION: A liquid is introduced into the tubular sample, and the contact angle of the gas-liquid interface (meniscus) by the liquid in the tubular sample and an atmospheric gas with the inner surface of the tubular sample is measured, and the characteristics of the inner surface of the tubular sample are evaluated on the basis of the measured values.;COPYRIGHT: (C)2010,JPO&INPIT