Fabrication and transfer printing of periodic Pt nanonetwork gratings

Miao Yu
,
Li Li
,
Xiaomin Wu
,
Yingying Song
,
Jinyun Liu
,
Zuobin Wang

Changchun University of Science and Technology
,
North China University of Science and Technology

Research Output: Contribution to journal Article Peer-review

Open access

Abstract

Metal nanonetworks are applied in various applications, such as biomedicine, bionic materials, optical materials, and new energy materials. Here, periodic variable-sized Pt nanonetwork gratings (PtNGs) are fabricated on the surface of a Pt/Si substrate with single pulse two-beam direct laser interference lithography. The fabricated PtNGs are transferred onto the surface of a glass substrate with polymethyl methacrylate as the transfer mediator. Exposure with different film thicknesses, contrasts, and intensity distributions of the laser interference spot is analyzed, and the formation of nanopatterns is explained. Results show that with the change in the thicknesses of the Pt film, the exposed structures present Pt nanoparticles (PtNPs), Pt gratings, and PtNGs. The morphology and the feature size of the PtNGs are influenced by intensity distributions and the contrast of the laser interference spot significantly.