Results 1 to 10 of about 1,437,467 (197)

Performance of Active-Quenching SPAD Array Based on the Tri-State Gates of FPGA and Packaged with Bare Chip Stacking [PDF]

Sensors, 2023
The performance of an active-quenching single-photon avalanche diode (SPAD) array that is based on the tri-state gates of a field programmable gate array (FPGA) is presented.
Liangliang Liu, Wenxing Lv, Jian Liu, Xingan Zhang, Kun Liang, Ru Yang, Dejun Han   +6 more
doaj   +5 more sources

First-Arrival Differential Counting for SPAD Array Design [PDF]

Sensors, 2023
We present a novel architecture for the design of single-photon detecting arrays that captures relative intensity or timing information from a scene, rather than absolute. The proposed method for capturing relative information between pixels or groups of
Mel White, Tianyi Zhang, Akshat Dave, Shahaboddin Ghajari, Alyosha Molnar, Ashok Veeraraghavan   +5 more
doaj   +7 more sources

Confocal-based fluorescence fluctuation spectroscopy with a SPAD array detector [PDF]

Light: Science & Applications, 2021
The combination of confocal laser-scanning microscopy (CLSM) and fluorescence fluctuation spectroscopy (FFS) is a powerful tool in studying fast, sub-resolution biomolecular processes in living cells.
Eli Slenders, Marco Castello, Mauro Buttafava, Federica Villa, Alberto Tosi, Luca Lanzanò, Sami Valtteri Koho, Giuseppe Vicidomini   +7 more
doaj   +8 more sources

Advantages and Limitations of Fluorescence Lifetime Measurements Using Single-Photon Avalanche Diode (SPAD) Array Detector: A Comprehensive Theoretical and Experimental Study [PDF]

Sensors, 2022
Fast fluorescence lifetime (FL) determination is a major factor for studying dynamic processes. To achieve a required precision and accuracy a certain number of photon counts must be detected.
Alexander Netaev, Nicolas Schierbaum, Karsten Seidl   +2 more
doaj   +5 more sources

Demonstration of particle tracking with scintillating fibres read out by a SPAD array sensor and application as a neutrino active target [PDF]

European Physical Journal C: Particles and Fields, 2023
Scintillating fibre detectors combine sub-mm resolution particle tracking, precise measurements of the particle stopping power and sub-ns time resolution. Typically, fibres are read out with silicon photomultipliers (SiPM).
Matthew Franks, Till Dieminger, Kodai Kaneyasu, Davide Sgalaberna, Claudio Bruschini, Edoardo Charbon, Umut Kose, Botao Li, Paul Mos, Michael Wayne, Tim Weber, Jialin Wu   +11 more
doaj   +4 more sources

Cooled SPAD array detector for low light-dose fluorescence laser scanning microscopy [PDF]

Biophysical Reports, 2021
The single-photon timing and sensitivity performance and the imaging ability of asynchronous-readout single-photon avalanche diode (SPAD) array detectors have opened up enormous perspectives in fluorescence (lifetime) laser scanning microscopy (FLSM ...
Eli Slenders, Eleonora Perego, Mauro Buttafava, Giorgio Tortarolo, Enrico Conca, Sabrina Zappone, Agnieszka Pierzynska-Mach, Federica Villa, Enrica Maria Petrini, Andrea Barberis, Alberto Tosi, Giuseppe Vicidomini   +11 more
doaj   +3 more sources

Design and Characterization of an Asynchronous Fixed Priority Tree Arbiter for SPAD Array Readout [PDF]

Sensors, 2021
The usage of single-photon avalanche diode arrays is becoming increasingly common in various domains such as medical imaging, automotive vision systems, and optical communications. Nowadays, thanks to the development of microelectronics technologies, the
Enagnon Aguénounon, Safa Razavinejad, Jean-Baptiste Schell, Mohammadreza Dolatpoor Lakeh, Wassim Khaddour, Foudil Dadouche, Jean-Baptiste Kammerer, Laurent Fesquet, Wilfried Uhring   +8 more
doaj   +4 more sources

A time-correlated single photon counting SPAD array camera with a bespoke data-processing algorithm for lightsheet fluorescence lifetime imaging (FLIM) and FLIM videos [PDF]

Scientific Reports
A wide-field microscope with epi-fluorescence and selective plane illumination was combined with a single-photon avalanche diode (SPAD) array camera to enable live-cell fluorescence lifetime imaging (FLIM) using time-correlated single-photon counting ...
Jakub Nedbal, Francesco Mattioli Della Rocca, Iveta T. Ivanova, Andrew Allan, Jeremy Graham, Richard Walker, Robert K. Henderson, Klaus Suhling   +7 more
doaj   +3 more sources

Multispectral Depth-Resolved Fluorescence Lifetime Spectroscopy Using SPAD Array Detectors and Fiber Probes [PDF]

Sensors, 2019
Single Photon Avalanche Diode (SPAD) arrays are increasingly exploited and have demonstrated potential in biochemical and biomedical research, both for imaging and single-point spectroscopy applications. In this study, we explore the application of SPADs
João L. Lagarto, Caterina Credi, Federica Villa, Simone Tisa, Franco Zappa, Vladislav Shcheslavskiy, Francesco Saverio Pavone, Riccardo Cicchi   +7 more
doaj   +4 more sources

Cerebral blood flow monitoring using a deep learning implementation of the two-layer diffuse correlation spectroscopy analytical model with a 512 × 512 SPAD array. [PDF]

Neurophotonics
. Significance Multilayer (two- and three-layer) diffuse correlation spectroscopy (DCS) models improve cerebral blood flow index (CBFi) measurement sensitivity and mitigate interference from extracerebral tissues.
Pan M, Li C, Zhang Y, Mollins A, Wang Q, Erdogan AT, Hua Y, Zang Z, Finlayson N, Henderson RK, Day-Uei Li D.   +10 more
europepmc   +3 more sources