Effect of DNA serial dilution on the highly precise broadband plasmonic signature of a BALB/c rat’s dried DNA deposited on gold thin film

An investigation was made to detect the DNA samples of BALB/c rats, exploiting the technique of broadband plasmonic response in the visible spectral regime. In experiments, a non-coherent light beam was physically designed and practically implemented to study the spectral effect due to serial diluti...

Full description

Saved in:
Bibliographic Details
Published in:Optical materials express 2024-05, Vol.14 (5), p.1420
Main Authors: Ghasemi, M., Nori, P., Ariannejad, M. M., Hamzezadeh, M., Hamidi, S. M., Dehzangi, A., Abbasi, M., Choudhury, P. K.
Format: Article
Language:English
Subjects:
Broadband
Coherent light
Dilution
Gold
Incidence angle
Light beams
Plasmonics
Polarized light
Thin films
Citations: Items that this one cites
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:An investigation was made to detect the DNA samples of BALB/c rats, exploiting the technique of broadband plasmonic response in the visible spectral regime. In experiments, a non-coherent light beam was physically designed and practically implemented to study the spectral effect due to serial dilution of BALB/c rat’s dried DNA. In particular, three different diluted DNA samples (with ratios of 1:10, 1:20, and 1:40) dried on the surface of a nanolayer gold thin film were considered to retrieve the plasmonic conditions under which the reflectance becomes minimum. The results indicate the most diluted DNA sample exhibits prominent plasmonic conditions, and the resonance wavelengths undergo redshifts with increasing incidence angle (of the p -polarized light). Also, the sensitivity of the configuration is enhanced in the presence of a DNA sample (as compared to the case of non-existence of measurand), which is further increased for larger incidence angles.
ISSN:2159-3930
2159-3930
DOI:10.1364/OME.511580