Yasuda M, Akimoto T. High-contrast fluorescence microscopy for a biomolecular analysis based on polarization techniques using an optical interference mirror slide.
BIOSENSORS 2014;
4:513-22. [PMID:
25587437 PMCID:
PMC4287716 DOI:
10.3390/bios4040513]
[Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/10/2014] [Revised: 11/18/2014] [Accepted: 12/08/2014] [Indexed: 11/17/2022]
Abstract
Fluorescence microscopy with an improved contrast for fluorescence images is developed using an optical interference mirror (OIM) slide, which can enhance the fluorescence from a fluorophore as a result of the double interference of the excitation light and emission light. To improve the contrast of a fluorescence image using an OIM slide, a linearly-polarized excitation light was employed, and the fluorescence emission polarized perpendicular to the polarization of the excitation light was detected. The image contrast with this optical system was improved 110-fold for rhodamine B spotted on the OIM, in comparison with a glass slide using a general fluorescence microscopy optical system. Moreover, a 24-fold improvement of the image contrast was achieved for the detection of Cy3-labeled streptavidin bound to immobilize biotin.
Collapse