Open AccessInfluence of the crystalline structure of metal films on the performance of plasmonic biosensors
Author(s) -
Yury V. Stebunov,
Dmitry I. Yakubovsky,
V. G. Leiman,
Aleksey V. Arsenin,
Valentyn S. Volkov
Publication year - 2018
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1092/1/012143
Subject(s) - biosensor , plasmon , materials science , nanotechnology , metal , optoelectronics , metallurgy
The development of plasmonic biosensors requires careful consideration of various factors associated with the deposition of thin metal films. The quality of metal films is mostly determined by their polycrystalline structure, where smaller crystallite sizes produce higher optical losses. In present work we obtained the dependence of optical losses in thin gold and copper films on their thicknesses. These experimental results are used for the analysis of the performance of plasmonic biosensors, which demonstrate an increase in the limit of detection of up to 50% and 35% for gold and copper films, respectively.