Photon Counting Histogram for One-Photon Excitation

ChemPhysChem ◽  
2003 ◽  
Vol 4 (10) ◽  
pp. 1121-1123 ◽  
Author(s):  
Thomas D. Perroud ◽  
Bo Huang ◽  
Mark I. Wallace ◽  
Richard N. Zare
ChemPhysChem ◽  
2003 ◽  
Vol 4 (12) ◽  
pp. 1280-1280 ◽  
Author(s):  
Thomas D. Perroud ◽  
Bo Huang ◽  
Mark I. Wallace ◽  
Richard N. Zare

ChemPhysChem ◽  
2004 ◽  
Vol 5 (10) ◽  
pp. 1523-1531 ◽  
Author(s):  
Bo Huang ◽  
Thomas D. Perroud ◽  
Richard N. Zare

ChemPhysChem ◽  
2005 ◽  
Vol 6 (5) ◽  
pp. 905-912 ◽  
Author(s):  
Thomas D. Perroud ◽  
Bo Huang ◽  
Richard N. Zare

Lab on a Chip ◽  
2021 ◽  
Vol 21 (4) ◽  
pp. 735-745
Author(s):  
Eleonora Perego ◽  
Sarah Köster

The combination of photon counting histogram and microfluidic mixing reveals early time points in reaction kinetics of biomolecule aggregation.


2000 ◽  
Vol 278 (6) ◽  
pp. H2150-H2156 ◽  
Author(s):  
W. Gil Wier ◽  
C. William Balke ◽  
Jeffrey A. Michael ◽  
Joseph R. H. Mauban

We describe a custom one-photon (confocal) and two-photon all-digital (photon counting) laser scanning microscope. The confocal component uses two avalanche photodiodes (APDs) as the fluorescence detector to achieve high sensitivity and to overcome the limited photon counting rate of a single APD (∼5 MHz). The confocal component is approximately nine times more efficient than our commercial confocal microscope (fluorophore fluo 4). Switching from one-photon to two-photon excitation mode (Ti:sapphire laser) is accomplished by moving a single mirror beneath the objective lens. The pulse from the Ti:sapphire laser is 109 fs in duration at the specimen plane, and average power is ∼5 mW. Two-photon excited fluorescence is detected by a fast photomultiplier tube. With a ×63 1.4 NA oil-immersion objective, the resolution of the confocal system is 0.25 μm laterally and 0.52 μm axially. For the two-photon system, the corresponding values are 0.28 and 0.82 μm. The system is advantageous when excitation intensity must be limited, when fluorescence is low, or when thick, scattering specimens are being studied (with two-photon excitation).


2006 ◽  
Vol 91 (11) ◽  
pp. 4273-4284 ◽  
Author(s):  
Lindsey N. Hillesheim ◽  
Yan Chen ◽  
Joachim D. Müller

2009 ◽  
Vol 96 (3) ◽  
pp. 91a
Author(s):  
Naofumi Terada ◽  
Tamotsu Zako ◽  
Masafumi Sakono ◽  
Mizuo Maeda

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