Orientation-Specific Plasmonic Biosensor for Alzheimer’s Disease Detection Using Graphene-Wrapped Au Nano ellipsoids
Source abstract
Abstract
Ellipsoidal plasmonic particles are of huge importance in the biosensing field due to their orientation-specific light scattering properties and higher area of surface-adhesive interactions. In this paper, we present a computational investigation of the orientation-specific plasmonic properties of graphene-wrapped—Au nano ellipsoids of various aspect ratios and graphene layer thicknesses using the discontinuous Galerkin time domain (DGTD) method. We could observe that both the dipolar and quadrapolar resonances of Au ellipsoids are strongly modulated by graphene layer. Furthermore, we have modelled graphene wrapped Au ellipsoidal nanoarray biosensor with optimized orientation having very high sensitivity (484 nm/RIU) towards refractive index changes associated with various fibrillation stages of beta amyloid (biomarker for Alzheimer’s disease) compared to the bare Au nanoellipsoidal biosensor.
Source: expertdata · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Gold and Silver Nanoparticles Synthesis and Applications · Graphene and Nanomaterials Applications · Advanced biosensing and bioanalysis techniques
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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