Method for producing metal nanocolloid by laser ablation

摘要

To provide a method and a device for generating metal nanocolloid containing no impurity such as a dispersant (surfactant), extremely narrow in particle side distribution compared to conventional ones even though a pulse laser having pulse width at picosecond or femtosecond and expensive price, and having particle diameter of 1 to 20 nm.SOLUTION: The metal nanocolloid generation method including scanning and irradiating a pulse laser 1 to a target 4 arranged in a liquid 5 so that a laser spot is apart from the target 4 with predetermined distance or more, the irradiation is conducted by separating pitch between spot diameter centers L 10 times or more of spot diameter D.SELECTED DRAWING: Figure 2