Model And Experimental Verification Of Hydrodynamic Coupling Piezoelectric Cantilever In Different Viscoelastic Environments

Abd Rahim, Rosman and Kok, Swee Leong and Lau, Kok Tee and A Aziz, Khairul Azha and Mustaffa , Izadora (2017) Model And Experimental Verification Of Hydrodynamic Coupling Piezoelectric Cantilever In Different Viscoelastic Environments. Project Report. Universiti Teknikal Malaysia Melaka, Melaka, Malaysia. (Submitted)

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Abstract

Cantilever based piezoelectric devices operate at resonance are sensitive to the changes of the force or mass that falls on to its surface.Based on the resonant principle,it can be use as a marker to identify the properties of cells or protein as an application of chemical and biological sensors for detecting micro- ontamination.Atomic Force Microscope (AFM) is one of the popular cantilever based biological sensors.AFM,however is sophisticated to handle due to its laser positioning sensor for detecting the deflection of the operated cantilever beam,therefore it is not suitable for liquid based measurement.In this project,an array of piezoelectric actuators is being proposed to analyse the hydrodynamic properties of the piezoelectric cantilever array and the viscosity of different liquid medium.The piezoelectric cantilever array will be excited externally using AC voltage source up to 1 MHz in studying the variation of high-order dynamic modes when resonant structure is in contact with different viscosity of liquid medium.The compression and frequency response of the AC excited cantilever will be picking up by a coupled cantilevers.Both internal and external measurement methods will be used to detect the changes,of which the internal measurement method is based on the piezoelectric output signal while the external method will be based on the changes of displacement along the coupled piezoelectric bender.The significant of this project is to provide a mean at lower cost in monitoring chemical and biochemical wastes for controlling micro-contamination in the environment which is one of the top priority of Environmental Policy of Malaysia in managing chemical and bio-medical wastes.

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