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  • Title: A surface plasmon resonance probe with a novel integrated reference sensor surface.
    Author: Akimoto T, Ikebukuro K, Karube I.
    Journal: Biosens Bioelectron; 2003 Oct 15; 18(12):1447-53. PubMed ID: 12941559.
    Abstract:
    A surface plasmon resonance (SPR) sensor probe with integrated reference surface is described. In order to fabricate the integrated reference surface, two dielectric layers with different thickness were deposited on the single gold SPR sensor surface via plasma polymerization of hexamethyldisiloxane. The working sensor surface was a 34 nm dielectric layer with immobilized bovine serum albumin (BSA) antigen and an adjacent thin 1 nm dielectric layer without BSA provided reference surface. A specific immunoreaction of anti-BSA antibody was detected after immersion of the SPR probe into sample solution. Simultaneous observation of reference and working surface response enabled determination of the immunoreaction without the need for the baseline measurement. Moreover, compensation of nonspecific adsorption could be confirmed using anti-human serum albumin antibody.
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