METHOD FOR MEASURING ROTATIONAL SPEED OF MOLECULE OF FULLERENES

摘要

A method for measuring the rotational speed (number of revolutions or rotational period) of fullerene or a derivative thereof through a relatively convenient and inexpensive means in order to evaluate fullerenes. A thin film of fullerene or a derivative thereof is made to absorb a radio wave and variation in the field strength of a radio wave is measured for temperature variation. When the field strength varied abruptly from an absorption zone to a nonabsorption zone at some temperature, the rotational speed of fullerene or a derivative thereof at that temperature is determined from the frequency of radio wave at that moment. A radio wave leaked from the surface of a surface acoustic wave device is preferably employed.