The hottest kaust company develops pressure sensor

  • Detail

Kaust company develops pressure sensors, which have potential application prospects in vacuum environment

according to foreign media reports, recently, scientists of kaust company developed a micron scale pressure sensor that supplies low-power power to customers from warehouses all over the European continent and the UK. This company uses straw, bamboo powder, plant starch and other renewable raw materials to produce biodegradable bioplastics product force sensors, It has potential application prospects in vacuum environment

according to foreign media reports, recently, scientists from kaust company developed a micron level, low-power pressure sensor, which has potential application prospects in vacuum environment

the pressure sensor designed by this group has wide working range and high sensitivity

nowadays, sensors are the interface between automation systems such as computers and robots and their environment. Sensors measure light, temperature, motion, mass, pressure, position, etc. the current market and application demand for sensors is that they are smaller, so that they can be integrated into portable products. For example, pressure sensors can be used in industrial control, medical care, medical testing and meteorology. According to different applications, these pressure sensors need to be sensitive to small changes, respond quickly to these changes, and work within a large pressure range

now, nouha alcheikh, Amal hajjaj and Mohammad Younis have developed a sensitive pressure micro sensor based on a silicon vibrating beam, which is only 800 microns long, 25 microns wide and 1.5 microns thick. Alcheikh said, "we have developed a scalable and sensitive micro pressure sensor with environmentally friendly, non-toxic and odorless materials, which can work in a larger pressure range in nanosystems."

in the experimental study, the suspension beam will vibrate at a resonant frequency, which is determined by its mass, length, density and stiffness. When the current passes through the vibrating beam, it becomes hotter and begins to bend. This increased curvature increases the stiffness of the vibrating beam, thereby moving the resonant frequency. The air around the vibrating beam cools it: the higher the pressure, the more air, and the better the cooling effect. Therefore, the resonance frequency of the vibration beam that can be measured electrically is related to the pressure. The device manufactured by the team works in a wide pressure range, from 0.038 torr to 200 Torr (atmospheric pressure is 760 Torr), and the sensitivity of the pressure sensor is 2689 x/torr

the research team also showed that this pressure micro sensor can adapt to specific applications by changing the thickness of the vibrating beam. They simulated the operation of vibrating beams to prove that for thinner micro vibrating beams, the sensitivity becomes higher, but thicker vibrating beams consume more energy. Therefore, the thickness of sensitivity under low pressure or high pressure can be calculated according to the target environment of the device

Alcheikh said, "thanks to kaust's advanced facilities, we are lucky to be able to explore some new ideas, such as this novel pressure sensor. I hope to continue to take this opportunity to commercialize this equipment concept."

article link: instrument

Copyright © 2011 JIN SHI