patterning. Hydroxyapatite thin film 100 nm thick was deposited by pulsed laser deposition.
The film was patterned by photolithography and wet etching with HCl solution. Proteins
(phospholyrase b, bovine serum albumin, and others) labeled with fluorescein
isothiocyanate (FITC) were used as the reagent. After the HAP film was soaked in the
reagent and washed with pure water, a conspicuous contrast in FITC was observed between …