2017
Витрик О. Б., Кучмижак А. А., Мицай Е. В., Непомнящий А. В., Сюбаев С. А., Пустовалов Е., Кудряшов С.
Applied Physics Letters, Q1
S. Syubaev, A. Nepomnyashchiy, E. Mitsai, E. Pustovalov, O. Vitrik, S. Kudryashov, and A. Kuchmizhak. Fabrication of porous microrings via laser printing and ion-beam post-etching // Applied Physics Letters 2017, 111, 083102.
Статьи в журналах
Pulsed-laser dry printing of noble-metal microrings with a tunable internal porous structure, which can be revealed via an ion-beam etching post-procedure, was demonstrated. The abundance and average size of the pores inside the microrings were shown to be tuned in a wide range by varying the incident pulse energy and a nitrogen doping level controlled in the process of magnetron deposition of the gold film in the appropriate gaseous environment. The fabricated porous microrings were shown to provide many-fold near-field enhancement of incident electromagnetic fields, which was confirmed by mapping of the characteristic Raman band of a nanometer-thick covering layer of Rhodamine 6G dye molecules and supporting finite-difference time-domain calculations. The proposed laser-printing/ion-beam etching approach is demonstrated to be a unique tool aimed at designing and fabricating multifunctional plasmonic structures and metasurfaces for spectroscopic bioidentification based on surface-enhanced infrared absorption, Raman scattering, and photoluminescence detection schemes.
https://doi.org/10.1063/1.4993885