Published in Microsystem Technologies
In the microoptics field, precise alignment is very important to reduce the coupling losses in optical links. In this paper, a novel device of passive and fixed alignment of optical fiber is proposed. The rectangular V-groove formed by one sidewall of SU-8 resist and the substrate is used to position the optical fiber, and the leaf spring with flex...
Published in Computational Mechanics
A detailed numerical study is carried out on the flow field generated in an open-cup coating applicator during the coating process in the manufacture of optical fibers. This is a critical problem in the manufacture of optical fibers and poses several challenges to numerical modeling. A finite volume numerical model, using multiple domains to repres...
Published in Experimental Mechanics
In this paper, the authors study the potential of using fiber Bragg grating (FBG) strain sensors to measure the torsion deformation theoretically and experimentally. FBG sensors are bonded on the surface of a shaft. When the shaft is under torsion, there is strain induced in the FBG sensor and the Bragg wavelength will shift accordingly. According ...
Published in Applied Biochemistry and Biotechnology
A chemiluminescent-based optical fiber immunosensor was developed for the detection of antipneumococcal antibodies. This was accomplished by developing a different chemical procedure utilizing 3-aminopropyl trimethoxysilane and cyanuric chloride to conjugate pneumococcal cell wall polysaccharides to the optical fiber tips, and by improving the sens...
Published in Analytica Chimica Acta
An optical fiber biosensor for choline-containing phospholipids monitoring in serum samples is described. Phospholipids are hydrolyzed by the enzyme phospholipase- D to choline which is analyzed with a fiber-optic biosensor based on choline oxidase and oxygen transduction. Several supports have been evaluated for enzyme immobilization. The optimum ...
Published in Analytica Chimica Acta
Two methods for the covalent immobilization of single-stranded DNA onto optical fibers for the development of biosensors are reported. In the first method, fused silica optical fibers were derivatized with γ-amino-propyltriethoxysilane (APTES) followed by extension with 12-nitrododecanoic acid via amide formation. The terminal nitro moiety was then...
Les capteurs à fibre(s) optique(s) trouvent de nombreuses applications dans la surveillance de l'environnement et particulièrement pour le contrôle continu et in situ de substances polluantes. Étant donné la toxicité des nitrates et des nitrites, l'objectif de ce travail a été de développer des capteurs chimiques à fibre optique fondés sur la fluor...
Le sujet que nous avons abordé concerne la mesure de la concentration d'oxygène dissous dans l'eau de mer artificielle en utilisant une sonde moléculaire fluorescente maintenue in-situ par fibres optiques. La durée de vie de la sonde est affectée par la concentration de l'espèce (l'inhibiteur) qu'on veut doser, dans le cas présent: l'oxygène. La so...
L’objectif de la recherche est de mettre au point un capteur à fibre optique pour l'immunofluoroanalyse. La réalisation de tels capteurs nécessite le développement de plusieurs procédés: le greffage de molécules sur support de silice, la synthèse chimique de sondes fluorescentes et leur couplage à des biomolécules, la détermination de caractéristiq...
Published in Technology and health care : official journal of the European Society for Engineering and Medicine
A diode laser with roughly 480 mW/cm2 emission at 776 nm was developed and engineered to obtain a uniform illumination of tumour cells deposited on Petri dishes having an external diameter of 5 cm. The efficacy of the apparatus in inducing photocytotoxic effects was successfully checked by irradiation of pigmented melanoma cells in the presence of ...
