We have developed a technique by which poling and ion implantation in solid state are simultaneously accomplished. The technique has been applied to 2Ag(2)O center dot 3Na(2)O center dot 25ZnO center dot 70TeO(2) (in mol %) glass. The glass is sandwiched by two cover glasses containing Na+ and then the thermal poling is carried out. We have accidentally found that Ag nanoparticles are selectively precipitated in the vicinity of the anode-side glass surface. X-ray photoelectron spectroscopy reveals that the glass composition of the anode-side glass surface becomes rich in Na+ after the thermal poling, which is caused by the Na+ implantation from the cover glass at the anode side. (C) 2007 American Institute of Physics.