Biosensors Nanotechnology

9Plasmonic Nanomaterials in Sensors

Noor Mohammadd¹, Ruhul Amin^1,2, Kawsar Ahmed^3,4* and Francis M. Bui³

¹ Dept. of Electrical and Electronic Engineering, Ahsanullah University of Science and Technology, Dhaka, Bangladesh

² Department of Electrical and Electronic Engineering, Bangladesh University of Business and Technology (BUBT), Dhaka, Bangladesh

³ Department of Electrical and Computer Engineering, University of Saskatchewan, Canada

⁴ Group of Bio-Photomatiχ, Department of Information and Communication Technology, Mawlana Bhashani Science and Technology University, Santosh, Tangail, Bangladesh

Abstract

Plasmonic nanomaterials exhibit distinctive optical properties when exposed to incident light with a proper wavelength. These noble materials have found widespread applications in optical sensing and sensors, energy transfer and conversion, biological analyte detection, chemical sensing, environmental control, nanomedicine, medical diagnostics, tumor and tissue imaging, food security, therapeutic and biomedical engineering, etc., thanks to their unique catalytic, mechanical and optical properties. As a result, the characteristics, synthesis and pertinent practical uses of plasmonic nanomaterials have piqued the attention of many researchers in recent decades, especially in the field of nanotechnology. Surface plasmon resonance (SPR) based sensors have a high sensitivity owing to the minimal deviation in sample refractive index (RI) in comparison to other optical sensing methods. ...