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Title: Ultrahigh resolution multicolor colocalization of single fluorescent probes

Patent ·
OSTI ID:1175204

A novel optical ruler based on ultrahigh-resolution colocalization of single fluorescent probes is described. Two unique families of fluorophores are used, namely energy-transfer fluorescent beads and semiconductor nanocrystal (NC) quantum dots, that can be excited by a single laser wavelength but emit at different wavelengths. A novel multicolor sample-scanning confocal microscope was constructed which allows one to image each fluorescent light emitter, free of chromatic aberrations, by scanning the sample with nanometer scale steps using a piezo-scanner. The resulting spots are accurately localized by fitting them to the known shape of the excitation point-spread-function of the microscope.

Research Organization:
Univ. of California, Oakland, CA (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
AC03-76F00098
Assignee:
The Regents of the University of California (Oakland, CA)
Patent Number(s):
6,844,150
Application Number:
09/925,100
OSTI ID:
1175204
Country of Publication:
United States
Language:
English

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