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Characterization of MEMS comb capacitor

Ahmad, F. and Baig, A. and Dennis, J.O. and Hamid, N.H.B. and Md Khir, M.H.B. (2020) Characterization of MEMS comb capacitor. Microsystem Technologies, 26 (4). pp. 1387-1392.

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Abstract

With the advancement of micro-electro-mechanical systems (MEMS) technologies, it is compulsory to have the sources which power the micro devices at micron scale. Due to the miniaturization, compactness, inexpensive and ease of integration with the standard process compatibility, CMOS-MEMS capacitor is characterized. There are two major parts of characterization; static mode and dynamic mode. The moveable shuttle remains in static mode until the input voltage reaches to 50 V. In static mode, due to constant capacitance among stator and shuttle fingers, charge accumulates up to 1.17 pC and level of energy stored does not go so high. The shuttle fingers initially overlap with the stator fingers by 30 μm but in dynamic mode when the voltage raises above 50 V, moveable shuttle starts moving and fingers overlapping distance reaches to 50 μm with the increase in voltage of approximately 307 V. In dynamic mode, stored energy level increases from 30 to 1800 pJ. The stored energy increases exponentially in dynamic mode due to the increased overlapping of the fingers and against elastic forces of beams (1, 2, 3 and 4). © 2019, Springer-Verlag GmbH Germany, part of Springer Nature.

Item Type:Article
Impact Factor:cited By 1
Uncontrolled Keywords:Capacitance; Stators, Comb capacitors; Constant capacitance; Dynamic modes; Elastic force; Input voltages; Micro electromechanical system (MEMS); Process compatibility; Stored energy, MEMS
ID Code:23238
Deposited By: Ms Sharifah Fahimah Saiyed Yeop
Deposited On:19 Aug 2021 07:27
Last Modified:19 Aug 2021 07:27

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