NANOCRYSTAL AGGREGATE AND METHOD FOR PRODUCING THE SAME

摘要

Provided is a nanocrystal aggregate that is an aggregate of nanocrystals. Also provided is a method for producing the same. A mixed solution or colloidal dispersion containing one or more types of metal ions is irradiated with ultrasonic waves in order to produce a nanocrystal aggregate in which single crystal grains which are 1 to 20 nanometers in size are aligned/aggregated in such a way that the nanocrystals have a predetermined crystal orientation, and the grain size of the aggregate is adjusted to within a range of 100 nanometers to 50 micrometers.