2018/09/13 by Arash Ahmadivand, Ahmadivand, Arash, Burak Gerislioglu +1
Biochemistry, Genetics and Molecular Biology · Engineering · Materials Science · #Advanced Biosensing Techniques and Applications #Advanced biosensing and bioanalysis techniques #Applied Physics (physics.app-ph) #FOS: Physical sciences #Metamaterials and Metasurfaces Applications #Optics (physics.optics) #Plasmonic and Surface Plasmon Research
paper · pdf · doi:10.48550/arxiv.1809.05602
openalex publication_date 2018/09/13 · openalex created_date 2022/08/03 · openalex updated_date 2026/07/28
Rapid progress in plasmonics biosensors and immunosensors brings many\nmethodologies to employ resonant subwavelength structures associated with the\nphysics of multipoles, Fano resonances, and analogous moments. Here, we review\na broad range of traditional and novel techniques that have been utilized for\ndeveloping advanced biosensing tools including colloidal nanoparticles\n(NPs)-based systems to well-engineered arrays of meta-atoms and metamolecules.\nBy describing some of the important and practical label-free biosensing methods\nbased on subwavelength plasmonic technology, we discuss the emerging and\nexcitation of toroidal multipoles concept, as a third family of multipolar\nmodes, has made a revolution in enhancing the sensing performance of ultra-low\nweight diseases proteins and viruses as biological targets. Taking the\nexquisite and untraditional advantages of toroidal plasmonic metasurfaces, we\ncomprehensively evaluated the detection properties and high-quality of toroidal\nimmunosensors for the sensing of signature of bioproteins at picomolar (pM)\nconcentrations with excellent limit of detection (LOD). This understanding\nclearly shows how toroidal metasensors have emerged as promising clinical and\npharmacology tools, can be considered as alternatives and big competitors for\nconventional plasmonic sensors and transducers.\n