The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
The paper presents front-end ASIC and measurements of low intensity fluorescence light using Silicon Photomultiplier. Front-end ASIC is dedicated device for amplifying and shaping signals from Silicon Photomultipliers. Measurement method is described. Fluorescence intensity for sodium fluoresceinate and resorufin in different concentrations is presented. Sensitivity limit is studied.
In the paper a measurement system for low intensity light is presented. This system has been adapted for fluorescence light measurement, generated by fluorescein solution with pH equal 8.1. The whole system is capable of measuring the fluorescence light intensity of the solution deposited in a transparent cuvette, and positioned in a specially prepared optical system. A new semiconductor device, called...
This work demonstrated leukocyte count and two-part leukocyte differential from the whole blood based on a portable microflow cytometer system. Leukocytes are selectively stained with a fluorescent dye, Acridine Orange (AO). The blood sample is then pumped through a disposable microfluidic device for fluorescence sensing. Under blue LED excitation (460 nm), the green fluorescence from DNA and the...
Design and characterization of a new generation of single-photon avalanche diodes (SPAD) array, manufactured by ST-Microelectronics in Catania, Italy, are presented. Device performances, investigated in several experimental conditions and here reported, demonstrate their suitability in many applications. SPADs are thin p-n junctions operating above the breakdown condition in Geiger mode at low voltage...
This paper describes a method of utilizing UV lasers, detectors, and a high-speed digital signal processor (DSP)-based digitizer to measure the fluorescence lifetime of fluorophores. The aim of the design is to create a low cost compact device which guarantees ease of use while not compromising performance. An ultrafast photomultiplier tube coupled with an excitation light filter is used to characterize...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.