Development of a saw gas sensor for monitoring so2 gas

Progress in Ultrasonic Spray Pyrolysis for Condensed Matter Sciences Developed From Ultrasonic Nebulization Theories Since Michael Faraday

“…The asynchronous-pulse ultrasonic spray pyrolysis (APUSP) is another interesting design suitable for growth of stacked films or controlled doping and development of superlattices [106,157,158,160]. In APUSP, two more ultrasonicator-containing chambers are harnessed.…”

“…However, introducing droplets from below has the advantage of selecting on the small droplets with most of the large one returning to the precursor under gravity. In both the Lee et al (1998) [106,157] set up and that of [73,104,120,124,374,375,430,439,492] the substrate has its own special heater apart from the standard furnace.…”

High precision pressure sensors based on SAW devices in the GHz range

“…For the last few decades, surface acoustic wave devices have been used not only for wireless communication systems [1], but also for gas [2][3][4], temperature and pressure sensors [5][6][7] due to their intrinsic energy confinement in a narrow region underneath the surface. Furthermore, the interest in tyre pressure monitoring systems (TPMS) for the automotive industry has increased in recent years.…”

Deposition of Polymer Sensor Films on SAW Surface by Electrospraying Technology

“…Among the organic semiconductors the most common are phtalocyanines and porphyrins, which are used to detect NO 2 , and volatile organic compounds (VOC, Hassman, Gould, 1992; Jakubik et al, 2012; Di Natale et al, 1998). Other layers, such as organic nitrogen bases (CO 2 detection, Zhou et al, 1996), non-metallic conductive compounds, e.g., CdS (Lee et al, 1998) form a separate group which is hard to classify. The basic compounds mentioned above are often bonded to obtain some synergic sensitive properties.…”