In this paper. we numerically debrief an ultra-high sensitive surface plasmon resonance (SPR) biosensor utilizing thin layers of graphene oxide (GO) that have not been addressed adequately till now. By the deposition of GO on top of the metal-dielectric heterostructure. our proposed sensor can achieve higher sensitivity and higher Quality Factor (QF) simultaneously which has not been ... https://www.fitnessgravesyardes.shop/product-category/heartrate-kit/