The Experts below are selected from a list of 2100 Experts worldwide ranked by ideXlab platform
Etienne Gaviot - One of the best experts on this subject based on the ideXlab platform.
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su 8 waveguiding interferometric micro sensor for Gage Pressure measurement
Sensors and Actuators A-physical, 2007Co-Authors: Nicolas Pelletier, Bruno Beche, Najat Tahani, Joseph Zyss, Lionel Camberlein, Etienne GaviotAbstract:The authors present a successful modeling, realization and characterization of a new micro-sensor based on a convenient optical principle, namely an integrated Mach–Zehnder interferometer (MZI). This MZI device is designed with a view to measuring Pressure disturbances due to optical path variations. Such a system is arranged in order to work in intensity modulation scheme. Moreover, the MZI is made up of straight and bent rib optical waveguides composed of SU-8 polymer. The mainstay of the device is based on differential measurements performed by a sensing arm arranged with a micromachined membrane and actuated by a given Pressure disturbance, while the second arm of the interferometer is considered as a reference one. The main parameters of each element are given by way of two modeling approaches: an optical modeling with a semi-vectorial finite difference method together with a conformal transformation, and a mechanical modeling with a finite-element method associated to the mechanical theory of membranes. So, as the Pressure to be measured is applied upon the diaphragm, an optical path variation of the acting arm is induced. After the combination of both signals, the variation at the output of the system is measured. A prototype is characterized by way of a micro-optical injection bench specifically designed to allow an efficient end-fire coupling into the waveguides.
Nicolas Pelletier - One of the best experts on this subject based on the ideXlab platform.
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su 8 waveguiding interferometric micro sensor for Gage Pressure measurement
Sensors and Actuators A-physical, 2007Co-Authors: Nicolas Pelletier, Bruno Beche, Najat Tahani, Joseph Zyss, Lionel Camberlein, Etienne GaviotAbstract:The authors present a successful modeling, realization and characterization of a new micro-sensor based on a convenient optical principle, namely an integrated Mach–Zehnder interferometer (MZI). This MZI device is designed with a view to measuring Pressure disturbances due to optical path variations. Such a system is arranged in order to work in intensity modulation scheme. Moreover, the MZI is made up of straight and bent rib optical waveguides composed of SU-8 polymer. The mainstay of the device is based on differential measurements performed by a sensing arm arranged with a micromachined membrane and actuated by a given Pressure disturbance, while the second arm of the interferometer is considered as a reference one. The main parameters of each element are given by way of two modeling approaches: an optical modeling with a semi-vectorial finite difference method together with a conformal transformation, and a mechanical modeling with a finite-element method associated to the mechanical theory of membranes. So, as the Pressure to be measured is applied upon the diaphragm, an optical path variation of the acting arm is induced. After the combination of both signals, the variation at the output of the system is measured. A prototype is characterized by way of a micro-optical injection bench specifically designed to allow an efficient end-fire coupling into the waveguides.
C Z Alvarado - One of the best experts on this subject based on the ideXlab platform.
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experimental study on transport mechanisms during deep fat frying of chicken nuggets
Lwt - Food Science and Technology, 2013Co-Authors: Sravan Lalam, Jaspreet S Sandhu, Pawan S Takhar, L D Thompson, C Z AlvaradoAbstract:Abstract Two important factors affecting oil uptake of food products during deep fat frying (DFF) are water content and Pressure development. This study tries to explain the complex mass transfer mechanisms taking place during DFF with respect to real time Pressure variations inside chicken nuggets. Breaded chicken nuggets were made with and without 5 g/100 g methylcellulose (MC) added to predust. Frying experiments were performed at 175 °C and 190 °C for 0, 30, 60, 120 and 240 s. The Gage Pressure increased rapidly after the nuggets were introduced into hot oil. As frying progressed the Pressure inside the nugget decreased to negative values (suction). During post frying cooling there was a further reduction in Pressure. The MC-coated nuggets had lower fat uptake and moisture loss than control nuggets for both frying temperatures. Scanning electronic microscopic analysis showed that the control nuggets had greater randomness in the crust, core and meat layers in terms of microstructure development, surface texture, rigidity and pore sizes than MC-coated nuggets. Higher frying temperature resulted in increased complexity of microstructure. The nuggets fried in dyed oil showed oil penetration up to 1–4 mm into the meat layer. This implied that the oil uptake was a surface phenomenon.
Wu Xu - One of the best experts on this subject based on the ideXlab platform.
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ion beam sputtered thin film strain Gage Pressure transducers
Sensors and Actuators A-physical, 1993Co-Authors: Wang Hongye, An Zhichou, Wu XuAbstract:Abstract This paper describes the recent development of ion-beam sputtered thin-film strain-Gage transducers. An SCY-911F type Pressure transducer with a total accuracy better then 0.1% and some new achievements obtained in the field of sputtered sensors are presented.
Joseph Zyss - One of the best experts on this subject based on the ideXlab platform.
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su 8 waveguiding interferometric micro sensor for Gage Pressure measurement
Sensors and Actuators A-physical, 2007Co-Authors: Nicolas Pelletier, Bruno Beche, Najat Tahani, Joseph Zyss, Lionel Camberlein, Etienne GaviotAbstract:The authors present a successful modeling, realization and characterization of a new micro-sensor based on a convenient optical principle, namely an integrated Mach–Zehnder interferometer (MZI). This MZI device is designed with a view to measuring Pressure disturbances due to optical path variations. Such a system is arranged in order to work in intensity modulation scheme. Moreover, the MZI is made up of straight and bent rib optical waveguides composed of SU-8 polymer. The mainstay of the device is based on differential measurements performed by a sensing arm arranged with a micromachined membrane and actuated by a given Pressure disturbance, while the second arm of the interferometer is considered as a reference one. The main parameters of each element are given by way of two modeling approaches: an optical modeling with a semi-vectorial finite difference method together with a conformal transformation, and a mechanical modeling with a finite-element method associated to the mechanical theory of membranes. So, as the Pressure to be measured is applied upon the diaphragm, an optical path variation of the acting arm is induced. After the combination of both signals, the variation at the output of the system is measured. A prototype is characterized by way of a micro-optical injection bench specifically designed to allow an efficient end-fire coupling into the waveguides.