0000000001212701

AUTHOR

Alessandro C. Busacca

showing 3 related works from this author

Si photomultipliers for bio-sensing applications

2016

In this paper, silicon photomultipliers (SiPM) are proposed as optical detectors for bio sensing. Optical transduction is the most used detection mechanism in many biosensor applications, such as DNA microarray and real-time polymerase chain reaction. The performances of a 25 pixels device used for both applications are studied. The results confirm that the SiPM is more sensitive than the traditionally employed detectors. In fact, it is able to experimentally detect 1 nM and 100 fM of fluorophore concentrations in dried samples and solutions, respectively. We present and discuss in details the detector configuration and its characterization as fluorescence detector for bio sensing.

Optical biosensor systemPhotomultiplierFluorophoreMaterials sciencePixel010308 nuclear & particles physics010401 analytical chemistryDetectorDNA microarrayDNA microarray Optical biosensor system RT PCR Silicon PhotomultipliersNanotechnologySilicon Photomultipliers01 natural sciencesFluorescenceSettore ING-INF/01 - ElettronicaAtomic and Molecular Physics and OpticsFluorescence spectroscopy0104 chemical scienceschemistry.chemical_compoundSilicon photomultiplierchemistry0103 physical sciencesElectrical and Electronic EngineeringBiosensorRT PCR
researchProduct

Terahertz time-domain spectroscopy based on photoconductive antennas

2016

In this work, we present our first experimental results obtained by means of a THz-TDS setup based on photoconductive antennas (PCAs). The main elements of the setup are: i) a mode-locked Ti:Sapphire femtosecond laser (Mai-Tai SP - Spectra Physics), providing optical pulses at 800±20 nm with a duration < 50 fs and repetition rate of 84 MHz; ii) two photoconductive antennas, made in LT-GaAs (Low-Grown Temperature Gallium Arsenide), operating as THz emitter and detector; iii) an optical delay line.

Terahertz time-domain spectroscopySettore ING-INF/02 - Campi ElettromagneticiPhotoconductive antennasSettore ING-INF/01 - Elettronica
researchProduct

Simulation analysis of Ruthenium-based Dye Sensitized Solar Cells

2016

Dye Sensitized Solar Cell (DSSC), usually referred as one of the most promising third generation photovoltaic devices, is an electrochemical device in which a molecule (i.e., the dye) chemisorbed onto the surface of a porous material absorbs the incident light and, thus, transfers an electron to the wide band gap semiconductor material. The injected electrons can diffuse through the semiconductor up to the collecting anode without the risk of recombination. The roles of the electrolyte which permeates the cell are to regenerate the ionized molecule and to implement a hole-transporting layer, allowing to repeat the abovementioned process. Thanks to this behaviour, semiconductors with large a…

photovoltaicDye Sensitized Solar Cell (DSSC)Settore ING-INF/02 - Campi Elettromagneticilight soakingSettore ING-INF/01 - Elettronica
researchProduct