Superplastic Formation of Metal Nanostructure Arrays with Ultrafine Gaps.

Hu, Yaowu; Xuan, Yi; Wang, Xiaolei; Deng, Biwei; Saei, Mojib; Jin, Shengyu; Irudayaraj, Joseph; Cheng, Gary J · Adv Mater · 2016

basic_science · Level V

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Abstract

Laser shock compression of plasmonic nanoarrays results in ultrafine tunable line-gaps at sub-10 nm scale by collaborative superplastic flow. From molecular dynamics analysis, the metal nanostructures change from crystalline to liquid-like metals, expanding quickly but never fusing together, even when they are very close. This technique enables good tunability of surface plasmon resonances and significantly enhanced local fields.