Abstract
In this paper, new MEMS capacitive pressure sensor based on p++silicon diaphragm have been designed and characterized. Two sensor designs incorporating clamped and slotted diaphragm are implemented and compared to realize the pressure-sensitive components. The pressure sensor has been designed to measure pressures in the range of 0 to 60 mmhg that is in the range of intraocular pressure sensors. Intraocular pressure sensors are important in detection and treatment of an incurable disease called glaucoma. The capacitive pressure sensor is formed using p++silicon diaphragm as a biocompatible material. The novelty of this method relies on p++si diaphragm includes some slots to reduce the effect of residual stress and stiffness of diaphragm. The slotted diaphragm makes capacitive pressure sensor more sensitive, that is more suitable for measuring intraocular pressure sensor. The results yield a sensitivity of 1.811×10−5 1/Pa for the clamped and 5.96×10−5 1/Pa for the slotted pressure sensor with a 0.55 × 0.55 mm2 diaphragm. Furthermore, the resonance frequency for clamped diaphragm is 182.8 KHz while the resonance frequency for slotted diaphragm is 128.3 KHz.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
