Results 231 to 240 of about 62,656 (247)
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Sensors and Actuators B: Chemical, 2019
Abstract A miniaturized optical immunosensor based on White Light Reflectance Spectroscopy (WLRS) for the rapid and label-free detection of aflatoxin M1 (AFM1) in milk samples has been developed. WLRS sensing system consists of the measurement set-up and the biochip.
Dimitra Tsounidi +7 more
openaire +3 more sources
Abstract A miniaturized optical immunosensor based on White Light Reflectance Spectroscopy (WLRS) for the rapid and label-free detection of aflatoxin M1 (AFM1) in milk samples has been developed. WLRS sensing system consists of the measurement set-up and the biochip.
Dimitra Tsounidi +7 more
openaire +3 more sources
Biosensors and Bioelectronics, 2016
A dual-analyte assay for the simultaneous determination of C-reactive protein (CRP) and D-dimer in human blood plasma based on a white light interference spectroscopy sensing platform is presented. Measurement is accomplished in real-time by scanning the sensing surface, on which distinct antibody areas have been created, with a reflection probe used ...
Georgios, Koukouvinos +11 more
openaire +4 more sources
A dual-analyte assay for the simultaneous determination of C-reactive protein (CRP) and D-dimer in human blood plasma based on a white light interference spectroscopy sensing platform is presented. Measurement is accomplished in real-time by scanning the sensing surface, on which distinct antibody areas have been created, with a reflection probe used ...
Georgios, Koukouvinos +11 more
openaire +4 more sources
Sensors and Actuators B: Chemical, 2015
Abstract A label-free immunosensor based on white-light reflectance spectroscopy for the determination of total- and free-PSA in human serum is presented. The sensor consists of a silicon die with an overlayer of transparent material. Thermally grown silicon dioxide layers with thicknesses ranging between 700 and 3000 nm proved to be the most ...
G. Koukouvinos +6 more
openaire +3 more sources
Abstract A label-free immunosensor based on white-light reflectance spectroscopy for the determination of total- and free-PSA in human serum is presented. The sensor consists of a silicon die with an overlayer of transparent material. Thermally grown silicon dioxide layers with thicknesses ranging between 700 and 3000 nm proved to be the most ...
G. Koukouvinos +6 more
openaire +3 more sources
Sensors and Actuators B: Chemical, 2018
Abstract The fast and accurate determination of C-reactive protein (CRP) in human whole blood samples employing a white light reflectance spectroscopy sensing platform is demonstrated. Each assay cycle was completed in 12 min, including 5-min reaction with the diluted whole blood samples, 3-min with the biotinylated anti-CRP antibody, and 4-min with ...
Georgios Koukouvinos +5 more
openaire +3 more sources
Abstract The fast and accurate determination of C-reactive protein (CRP) in human whole blood samples employing a white light reflectance spectroscopy sensing platform is demonstrated. Each assay cycle was completed in 12 min, including 5-min reaction with the diluted whole blood samples, 3-min with the biotinylated anti-CRP antibody, and 4-min with ...
Georgios Koukouvinos +5 more
openaire +3 more sources
Journal of Biophotonics, 2018
Nasopharyngeal cancer (NPC) is an endemic with high incidence in Southern China and Southeast Asia countries. Screening for NPC under conventional white light imaging (WLI) nasopharyngoscope examination remains a great clinical challenge due to its poor sensitivity.
Duo Lin +12 more
openaire +4 more sources
Nasopharyngeal cancer (NPC) is an endemic with high incidence in Southern China and Southeast Asia countries. Screening for NPC under conventional white light imaging (WLI) nasopharyngoscope examination remains a great clinical challenge due to its poor sensitivity.
Duo Lin +12 more
openaire +4 more sources
SPIE Proceedings, 2007
We performed reflectance measurements with a time-resolved white-light spectroscopy system to monitor concentrations changes in a two-layer liquid phantom with optical properties similar to human tissues. By varying the concentrations of three inks with different spectral features, we changed the absorption coefficient of the upper and lower layer to ...
GIUSTO, ARIANNA +7 more
openaire +6 more sources
We performed reflectance measurements with a time-resolved white-light spectroscopy system to monitor concentrations changes in a two-layer liquid phantom with optical properties similar to human tissues. By varying the concentrations of three inks with different spectral features, we changed the absorption coefficient of the upper and lower layer to ...
GIUSTO, ARIANNA +7 more
openaire +6 more sources
IEEE Transactions on Instrumentation and Measurement, 2010
Diffuse spectroscopy of turbid media has assumed a crucial role in the characterization of biological tissues. In particular, broadband time-resolved optical spectroscopy allows the direct determination in a single measurement of both the optical parameters of the tissue and the concentration of its main constituents.
A. Giusto +7 more
openaire +2 more sources
Diffuse spectroscopy of turbid media has assumed a crucial role in the characterization of biological tissues. In particular, broadband time-resolved optical spectroscopy allows the direct determination in a single measurement of both the optical parameters of the tissue and the concentration of its main constituents.
A. Giusto +7 more
openaire +2 more sources
Review of Scientific Instruments, 1995
An apparatus for variable-angle ultraviolet total internal reflection fluorescence (TIRF) spectroscopy is described. TIRF spectroscopy is an analytical technique based on the excitation of fluorescence from a sample by means of an exponentially decaying surface energy wave. The limited penetration depth of the excitation volume results in excitation of
M. Toriumi +3 more
openaire +1 more source
An apparatus for variable-angle ultraviolet total internal reflection fluorescence (TIRF) spectroscopy is described. TIRF spectroscopy is an analytical technique based on the excitation of fluorescence from a sample by means of an exponentially decaying surface energy wave. The limited penetration depth of the excitation volume results in excitation of
M. Toriumi +3 more
openaire +1 more source
Real-time multi-analyte label-free detection of proteins by white light reflectance spectroscopy
SPIE Proceedings, 2014Label-free optical sensors are considered ideal for biomedical analysis since they provide the advantages of multiplex and real-time detection. They still suffer; however, from lower sensitivity and/or more sophisticated equipment as compared to indirect detection methods.
Panagiota Petrou +6 more
openaire +1 more source
Lasers in Surgery and Medicine, 2014
Background and ObjectiveHolmium laser lithotripsy is the ‘gold standard’ for intracorporeal fragmentation of stones. However, there is a risk of damaging and perforating the ureter wall when the laser is accidentally fired while the fiber is in contact with tissue.
Birgit, Lange +3 more
openaire +2 more sources
Background and ObjectiveHolmium laser lithotripsy is the ‘gold standard’ for intracorporeal fragmentation of stones. However, there is a risk of damaging and perforating the ureter wall when the laser is accidentally fired while the fiber is in contact with tissue.
Birgit, Lange +3 more
openaire +2 more sources