7 research outputs found
CALLE LA MARINA Y ALAMEDA [Material gráfico]
Get PDFFOTO POSTAL DE CALLE DE LA MARINA TENERIFE. DUPLICADO DE LA IMÁGENES Nº 2178 Y 2180Copia digital. Madrid : Ministerio de Educación, Cultura y Deporte. Subdirección General de Coordinación Bibliotecaria, 201
Flexible ozone sensor fabricated by photolithography and laser patterning
No full textInternational audienc
Ammonia detection by a novel Pyrex microsystem based on thermal creep phenomenon
No full textInternational audienceOur research work aims to develop a microfluidic system for gas analysis by using an original principle of integrated pumping. This microsystem can detect ammonia and the gas flow parameters inside the channel can be also controlled. The proposed microdevice consists in a microchannel including an integrated gas sensor with a heater. The trioxide tungsten (WO3) is implemented as a sensitive layer. The integrated heater is used for two reasons: to optimize the sensor response and to induce the gas pumping inside the microchannel by thermal creep phenomenon, therefore, no external pumping system is required. The study of the pumping effect generation has been realized by thermal and microfluidic simulations. Thermal simulations have been performed to estimate the thermal gradientalong the microchannel. In addition, the microfluidic modelling allows us to determine the mass flow rate for different thermal gradient profiles, obtained from the thermal simulations. Finally, a completePyrex microsystem has been realized to detect ammonia. The existence of the thermal pumping has been demonstrated experimentally
Influence of film-thickness on the ozone detection of perovskite La 0.8 Pb 0.1 Ca 0.1 Fe 1−x Co x O 3 based sensors
No full textInternational audienceIn this study, La 0.8 Pb 0.1 Ca 0.1 Fe 1−x Co x O 3 ( x = 0.10 and x = 0.20) thin films with respective thicknesses of 300 and 600 nm have been prepared by the drop coating technique onto a Si/SiO 2 substrate with platinum interdigitated electrodes
