Amorphous silver nanowires （a-Ag NWs） are fabricated from crystalline Ag NWs by using 5 MeV helium （He＋） ion beam irradiation. At low dose （5 × 1015 ion/cm2）, few defects are created in Ag NWs. As dose inc...Amorphous silver nanowires （a-Ag NWs） are fabricated from crystalline Ag NWs by using 5 MeV helium （He＋） ion beam irradiation. At low dose （5 × 1015 ion/cm2）, few defects are created in Ag NWs. As dose increases, more damage to the crystalline structure of Ag NWs is observed. Finally at high dose （8 × 1016 ion/cm2）, the face-centered cubic structure of Ag NWs is transformed into the amorphous structure with similar morphology as Ag NWs. Phase transformation of crystalline Ag NWs upon irradiation with 5 MeV He＋ ions is observed through high resolution transmission electron microscopy. Synthesis of large scale amorphous metal nanowires and metal nanowire alloy systems are discussed.展开更多
文摘Amorphous silver nanowires （a-Ag NWs） are fabricated from crystalline Ag NWs by using 5 MeV helium （He＋） ion beam irradiation. At low dose （5 × 1015 ion/cm2）, few defects are created in Ag NWs. As dose increases, more damage to the crystalline structure of Ag NWs is observed. Finally at high dose （8 × 1016 ion/cm2）, the face-centered cubic structure of Ag NWs is transformed into the amorphous structure with similar morphology as Ag NWs. Phase transformation of crystalline Ag NWs upon irradiation with 5 MeV He＋ ions is observed through high resolution transmission electron microscopy. Synthesis of large scale amorphous metal nanowires and metal nanowire alloy systems are discussed.
