Journal: International Journal of Nanomedicine
Article Title: Nanoplasmonic Biosensors: A Comprehensive Overview and Future Prospects
doi: 10.2147/IJN.S521442
Figure Lengend Snippet: Procedural steps for modifying antibodies and implementation of analytical techniques are outlined as follows. ( a ) The sensing region surface is characterized by an abundance of amino groups. ( b ) Conjugation of anti-latent membrane protein-1 (LMP1) IgG to amino groups within the sensing region is achieved through carboxy-amine conjugation. ( c ) Following anti-LMP1 IgG modification, bovine serum albumin (BSA) is employed to obstruct unreacted sites. ( d ) The sensing chip is then utilized to detect the LMP1 protein. ( e ) The nanoslit surface plasmon resonance (SPR) sensing chip captures a standard Fano-type resonant spectrum when broadband light, oriented in the transverse magnetic (TM) direction, is introduced. ( f ) Four distinct analytical methods are employed, encompassing the area, center of mass, peak value, and dip value methodologies. ( g ) The underlying mechanism involves a progressive redshift in the resonant spectrum as targets progressively adhere to the surface. (a-g)Reproduced from Hsieh H-Y, Luo J-X, Shen Y-H, et al. A nanofluidic preconcentrator integrated with an aluminum-based nanoplasmonic sensor for Epstein-Barr virus detection. Sens Actuators B Chem. 2022;355:131327. Copyright (2022), with permission from Elsevier. ( h ) Schematic illustration of the SPR-light diffusing fiber (SPR-LDF) sensor system. Reprinted from Arcadio F, Seggio M, Del Prete D, et al. A plasmonic biosensor based on light-diffusing fibers functionalized with molecularly imprinted nanoparticles for ultralow sensing of proteins. Nanomaterials . 2022;12 (9):1400.
Article Snippet: Quantum dot-plasmonic nanostructure coupling and semiconductor nanocrystal-dye molecule couple excitonic material-plasmonic nanostructure EET form the foundation for EET-based plasmonic biosensors in a bid to enable specific, ultrasensitive optical detection via mechanisms such as Förster resonance energy transfer (FRET) and plasmon-exciton coupling.
Techniques: Conjugation Assay, Membrane, Modification, SPR Assay, Virus