title: Photoelectrochemical etching and energy gap control of silver clusters.
abstract: An energy gap of Ag clusters is controlled on the basis of photoinduced electron transfer from the clusters to TiO2. With 2.6 eV light irradiation, Ag32 clusters on TiO2 are oxidized and disappear. With <1.6 eV light, the energy gap of Ag32 is changed from ∼1.4 to ∼1.7 eV because of photoetching.
authors.affiliation: Institute of Industrial Science, University of Tokyo, 4-6-1 Komaba, Meguro-ku, Tokyo 153-8505, Japan. tatsuma@iis.u-tokyo.ac.jp.
authors.forename: Atsushi
authors.initials: A
authors.lastname: Kogo
authors.forename: Nobuyuki
authors.initials: N
authors.lastname: Sakai
authors.forename: Tetsu
authors.initials: T
authors.lastname: Tatsuma