Webcam-based flow cytometer using wide-field imaging for low cell number detection at high throughput

The Analyst ◽  
2014 ◽  
Vol 139 (17) ◽  
pp. 4322-4329 ◽  
Author(s):  
Joshua Balsam ◽  
Hugh Alan Bruck ◽  
Avraham Rasooly

Here we describe a novel low-cost high throughput flow cytometer based on a webcam capable of low cell number detection in a large volume which may overcome the limitations of current flow cytometry.

2016 ◽  
Author(s):  
Francisco Ocaña ◽  
Alejandro Sánchez de Miguel ◽  
Aitor Conde

2019 ◽  
Vol 126 (1) ◽  
pp. 90
Author(s):  
Е.В. Хайдуков ◽  
К.Н. Болдырев ◽  
К.В. Хайдуков ◽  
И.В. Крылов ◽  
И.М. Ашарчук ◽  
...  

AbstractDetection systems with deferred registration of luminescence signals are promising for performing complex tasks of imaging of biological objects due to their simplicity and low cost. In the present work, β‑NaYF_4:Tm^3+Yb^3+/NaYF_4 nanocrystals with anti-Stokes photoluminescence have been used in deferred registration systems. It has been shown that there is a significant time delay between the exciting laser pulse and luminescence signal, which makes it possible to use this class of nanoparticles in the creation of wide-field imaging systems with deferred registration. The possibility of using nanoparticles for detecting a photoluminescence signal in the second transparency window of biotissue has been demonstrated. This system can be based on the resonance excitation and detection of the photoluminescence signal of Yb^3 + ions.


2021 ◽  
Vol 4 (1) ◽  
Author(s):  
Martin Schmidt ◽  
Adam C. Hundahl ◽  
Henrik Flyvbjerg ◽  
Rodolphe Marie ◽  
Kim I. Mortensen

AbstractUntil very recently, super-resolution localization and tracking of fluorescent particles used camera-based wide-field imaging with uniform illumination. Then it was demonstrated that structured illuminations encode additional localization information in images. The first demonstration of this uses scanning and hence suffers from limited throughput. This limitation was mitigated by fusing camera-based localization with wide-field structured illumination. Current implementations, however, use effectively only half the localization information that they encode in images. Here we demonstrate how all of this information may be exploited by careful calibration of the structured illumination. Our approach achieves maximal resolution for given structured illumination, has a simple data analysis, and applies to any structured illumination in principle. We demonstrate this with an only slightly modified wide-field microscope. Our protocol should boost the emerging field of high-precision localization with structured illumination.


2021 ◽  
Vol 2 (2) ◽  
pp. 100542
Author(s):  
Taiga Takahashi ◽  
Hong Zhang ◽  
Kohei Otomo ◽  
Yosuke Okamura ◽  
Tomomi Nemoto

1998 ◽  
Vol 11 (1) ◽  
pp. 492-492
Author(s):  
D. MacCagni ◽  
O. Le Fèvre ◽  
G. Vettolani ◽  
D. Mancini ◽  
J.P. Picat ◽  
...  

Large and deep spectroscopic samples of galaxies are essential to study galaxies and large scale structure evolution out to look-back times ~ 10% the current age of the vmiverse. Keeping this scientific and observational goal in mind, we designed and are presently building two wide-field imaging spectrographs to be installed at the Nasmyth foci of the ESO-VLT Unit Telescopes 3 and 4.


2018 ◽  
Vol 114 (3) ◽  
pp. 504a-505a
Author(s):  
Mohammed Mahamdeh ◽  
Steve Simmert ◽  
Anna Łuchniak ◽  
Erik Schäffer ◽  
Jonathon Howard

1999 ◽  
Vol 117 (3) ◽  
pp. 1616-1633 ◽  
Author(s):  
Steven H. Pravdo ◽  
David L. Rabinowitz ◽  
Eleanor F. Helin ◽  
Kenneth J. Lawrence ◽  
Raymond J. Bambery ◽  
...  

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