For the past few decades, pulsed laser ablation has been known

from an industrial point of view as a typical method to form

a thin film on a substrate.1 This method is also called pulsed

laser deposition because the thin film is formed under vacuum by

depositing laser-generated nanoparticles on the substrate. In the

last decade, nanoparticles themselves have attracted considerable

attention. This is because numerous new properties that do not exist

in a bulk material have recently been discovered in nanoparticles,

nanocrystals, and nanoclusters.2,3 These novel properties have been

introduced in functional materials for catalysis, chemo/biosensing,

optics, photothermal therapy, and data storage.4