Construction of graphene-based nanosensor is presented for the detection of viruses and bacteria as infectious agents. Viruses and bacteria are cause of different form of diseases. Detection mechanism for classification and identification of biological agents as well as viruses are paramount at early stages of illness. Fabrication of graphene nanosensor based on surface plasmon resonance (SPR) technique and field-effect for viruses, bacteria, proteins, and nucleic acids detection is proposed in this article.
The unique optical and electronic properties of graphene allow one to realize active optical devices. While several types of graphene-based photonic modulators have already been demonstrated, the potential of combining the versatility of graphene with sub-wavelength field confinement of plasmonic/metallic structures is not fully realized. Here we report fabrication and study of hybrid graphene-plasmonic modulators. We consider several types of modulators and identify the most promising one for light modulation at telecom and near-infrared. Our proof-of-concept results pave the way towards on-chip realization of efficient graphene-based active plasmonic waveguide devices for optical communications.
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