Results 11 to 20 of about 62,656 (247)

Real-time label-free detection of complement activation products in human serum by white light reflectance spectroscopy [PDF]

Biosensors and Bioelectronics, 2009
We present a label-free, real-time sensor based on white light reflectance spectroscopy for quantitating the complement activation product C3b and its metabolites as a biomarker in human serum. Our novel sensor allows real-time monitoring of biomolecular reactions (in this case, antigen-antibody reactions) taking place on a reflective surface within a ...
Panagiota S, Petrou, Daniel, Ricklin, Maria, Zavali, Ioannis, Raptis, Sotirios E, Kakabakos, Konstantinos, Misiakos, John D, Lambris   +6 more
openaire   +4 more sources

Simultaneous determination of paraquat and atrazine in water samples with a white light reflectance spectroscopy biosensor

Journal of Hazardous Materials, 2018
An optical immunosensor based on White Light Reflectance Spectroscopy for the simultaneous determination of the herbicides atrazine and paraquat in drinking water samples is demonstrated. The biosensor allows for the label-free real-time monitoring of biomolecular interactions taking place onto a SiO2/Si chip by transforming the shift in the reflected ...
Eleftheria Stavra, Panagiota S. Petrou, Georgios Koukouvinos, Christos Kiritsis, Ioannis Pirmettis, Minas Papadopoulos, Dimitrios Goustouridis, Anastasios Economou, Konstantinos Misiakos, Ioannis Raptis, Sotirios E. Kakabakos   +10 more
openaire   +5 more sources

Fast, sensitive and selective determination of herbicide glyphosate in water samples with a White Light Reflectance Spectroscopy immunosensor

Talanta, 2020
An optical immunosensor based on White Light Reflectance Spectroscopy is described for the determination of the herbicide glyphosate in drinking water samples. The biosensor allows for the label-free real-time monitoring of biomolecular interactions taking place onto a SiO2/Si chip by transforming the shift in the reflected interference spectrum caused
Stavra, E., Petrou, P.S., Koukouvinos, G., Economou, A., Goustouridis, D., Misiakos, K., Raptis, I., Kakabakos, S.E.   +7 more
openaire   +5 more sources

Non-Destructive Characterization of Selected Types of Films and Other Layers via White Light Reflectance Spectroscopy (WLRS)

Micro, 2022
In this work, we consider White Light Reflectance Spectroscopy (WLRS) as an optical methodology for the accurate, fast and non-destructive measurement of film thickness in the 1 nm to the 1 mm range and for applications that include microelectronics, photonics, bioanalysis and packaging.
Dimitrios Goustouridis, Ioannis Raptis, Theodora Mpatzaka, Savvina Fournari, Grigorios Zisis, Panagiota Petrou, Konstantinos G. Beltsios   +6 more
openaire   +3 more sources

Biomolecular layer thickness evaluation using White Light Reflectance Spectroscopy

Microelectronic Engineering, 2010
A White Light Reflectance Spectroscopy (WLRS) methodology is applied in the evaluation of the effectiveness of biomolecules immobilization onto solid surfaces as well as their subsequent reaction with counterpart biomolecules via measuring the respective layers thickness.
Kitsara, M., Petrou, P., Kontziampasis, D., Misiakos, K., Makarona, E., Raptis, I., Beltsios, K.   +6 more
openaire   +5 more sources

Multiplexed mycotoxins determination employing white light reflectance spectroscopy and silicon chips with silicon oxide areas of different thickness

Biosensors and Bioelectronics, 2020
Biosensing through White Light Reflectance Spectroscopy (WLRS) is based on monitoring the shift of interference spectrum due to the binding reactions occurring on top of a thin SiO2 layer deposited on a silicon chip. Multi-analyte determinations were possible through scanning of a single sensor chip on which multiple bioreactive areas have been created.
Anastasiadis, Vasileios, Koukouvinos, Georgios, Petrou, Panagiota S., Economou, Anastasios, Dekker, James, Harjanne, Mikko, Heimala, Paivi, Goustouridis, Dimitris, Raptis, Ioannis, Kakabakos, Sotirios, E.   +10 more
openaire   +6 more sources

Covalent and Non-covalent In-Flow Biofunctionalization for Capture Assays on Silicon Chips: White Light Reflectance Spectroscopy Immunosensor Combined with TOF-SIMS Resolves Immobilization Stability and Binding Stoichiometry. [PDF]

Langmuir, 2023
Immunosensors that combine planar transducers with microfluidics to achieve in-flow biofunctionalization and assay were analyzed here regarding surface binding capacity, immobilization stability, binding stoichiometry, and amount and orientation of surface-bound IgG antibodies.
Gajos K, Orzech A, Sanocka K, Petrou P, Budkowski A.   +4 more
europepmc   +4 more sources

Detecting head and neck lymph node metastases with white light reflectance spectroscopy; a pilot study

Oral Oncology, 2021
A challenge in the treatment of patients with head and neck cancer is the management of occult cervical lymph node (LN) metastases. Single-fiber reflectance (SFR) spectroscopy has the potential to detect physiological tissue changes that occur in a positive LN. This pilot study aimed to investigate whether SFR spectroscopy could serve as an alternative
Oisín Bugter, Yassine Aaboubout, Mahesh Algoe, Henriëtte S. de Bruijn, Stijn Keereweer, Aniel Sewnaik, Dominiek A. Monserez, Senada Koljenović, Jose A.U. Hardillo, Dominic J. Robinson, Robert J. Baatenburg de Jong   +10 more
openaire   +2 more sources

Synthesis, Photoluminescent Characteristics and Eu³⁺-Induced Phase Transitions in Sr₃Zr₂O₇:Eu³⁺ Red Phosphors

Nanomaterials, 2023
Designing phosphors that are excited by blue light is extraordinarily important for white light-emitting diodes (w-LEDs). In the present study, a new Ruddlesden–Popper type of SZO:xEu3+ (x = 0.01~0.10) phosphors was developed using solid-state reactions.
Nianmin Chen, Yunjian Wang, Longfeng Li, Lei Geng, Maolin Zhang   +4 more
doaj   +1 more source

Phytochemical mediated synthesis of ZnO:Dy3+ nanophosphors: Judd–Ofelt analysis, structural and spectroscopic properties

Journal of Science: Advanced Materials and Devices, 2020
In the present work, ZnO:Dy3+ nanophosphors were synthesized by a simple, cost effective and eco-friendly route using the aqueous extract of Azadirachta Indica leaves.
Prathibha Vasudevan, Viji Vidyadharan, Sanu Mathew Simon, Unnikrishnan N. V   +3 more
doaj   +1 more source