Wyniki 1-2 spośród 2 dla zapytania: authorDesc:"MICHAEL L. KORWIN-PAWLOWSKI"

Design and realization of a microfluidic capillary sensor based on a silicon structure and disposable optrodes


  During the last years microfluidic sensors that use optical capillaries have gained an increasing importance due to their new applications as diagnostic tool in biotechnology, medicine and in environmental sciences. This was possible because the capillary enables multiparametric sensing [1-7] contrary to the classical optical fiber sensors [8], which find applications in physical measurements such as pressure and also magnetic field [9]. In this paper the improvements in the design of microfluidic sensors that use local heating in optical capillaries as a base of multiparametric diagnostics is presented [4]. The application of local heating opened interesting new possibilities for the sensors, that do not use any chemical sensitive layers or reagents, while raising specific issues relating to their construction, materials and technology [5]. The mentioned sensors can be used for in situ diagnostic in medicine and veterinary and as biofuel usability testers [10-12].The proposed microfluidic capillary sensor consists of a stabilized-intensity light source unit, a testing head with replaceable optical capillary, a heater and a detection unit. The optical capillary performs the functions of a liquid sample holder and at the same time of a multiparametric sensing element. The sensor operates in a multiparametric sensing mode, monitoring, registering and processing the indirect information such as the index of refraction, the boiling point, the vapour pressure, the heat capacity, the heat of fusion, the viscosity, the surface tension of the liquid and turbidity changes in a thermally forced measuring cycle. The measuring cycle is initiated by applying local heating to the sample [5]. The measuring cycle is controlled indirectly by changes in optical signals and temperatures [10]. The raw optical data are processed by an optoelectronic ci[...]

Osadzanie cienkich warstw magnetycznych z Fe81B13.5 Si3.5Co2 metodą PLD z wykorzystaniem lasera ekscymerowego typu ArF

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W artykule przedstawiono wyniki eksperymentalne przeprowadzonych na cienkich warstw materiału magnetycznego Fe81B13.5 Si3.5Co2 z wykorzystaniem lasera ekscymerowego ArF (λ = 193 nm). Materiał ten, ze względu na potencjalnie duży współczynnik magnetoelastyczności może mieć szerokie zastosowanie do budowy czujników i aparatury pomiarowej. Osadzenia zostały wykonane na polerowanym podłożu k[...]

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