Open AccessDielectric barrier discharge plasma treatment of modified SU-8 for biosensing applications
Author(s) -
Jhonattan C. Ramírez,
Julia. Schianti,
Dênio Emanuel Pires Souto,
Lauro T. Kubota,
Hugo E. Hernandez-Figueroa,
Lucas H. Gabrielli
Publication year - 2018
Publication title -
biomedical optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.362
H-Index - 86
ISSN - 2156-7085
DOI - 10.1364/boe.9.002168
Subject(s) - surface plasmon resonance , biosensor , dielectric barrier discharge , materials science , dielectric , contact angle , plasma , surface roughness , nanotechnology , surface plasmon , surface modification , optoelectronics , plasmon , optics , chemistry , nanoparticle , composite material , physics , quantum mechanics
In this work we demonstrate the use of a dielectric barrier discharge plasma for the treatment of SU-8. The resulting hydrophilic surface displays a 5° contact angle and (0.40 ± 0.012) nm roughness. Using this technique we also present a proof of concept of IgG and prostate specific antigen biodetection on a thin layer of SU-8 over gold via surface plasmon resonance detection.