Low Weight Bio-Molecular Detection Using Nanostructure Based Localized Surface Plasmon Resonance Sensor
نویسندگان
1 Department of Physics, College of Science, University of Babylon, Iraq
2 Department of Physics, College of Science, University of Babylon, Iraq
3 Department of Physics, College of Science, University of Babylon, Iraq
doi
10.22052/JNS.2026.02.003چکیده
Local surface plasmon set-up based on a Nano shape of metal to stablish high efficiency plasmon resonance. The idea of the proposed system lies in monitoring the wavelength of the resonance. The system has been designed to work in visible light range. The optical sensitivity (RI) of the system has reached 55nm per refractive index unity (RIU. This research present direct detection method of one of the most toxic fungi called aflatoxin). Number of biosensing tests has been conducted to detect aflatoxin B1 in direct immunoassay in the company of specific antibodies which used as bio receptor. The localized surface plasmon resonance sensitivity to a change in the refractive index (RI) has been investigated using different types of nanostructure shapes as a resonance medium. The work was tried to determine plasmon experimental parameters which give rise to achieve best sensing performance. The plasmon resonance spectrum produced by the system and the accuracy in determining and tracking plasmon peak wavelength resonance have allowed to reach detection low concentration of both aflatoxin B1 and Ochratoxin A molecules.
