Publication: Modelling and simulation of array microneedle by consideration of insertion mechanism of mosquito’s proboscis
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Date
2010-03-01
Authors
Mat Nawi, Mohd Norzaidi
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Abstract
The objective of this project is to design and simulate a microneedle by using Microelectromechanical systems (MEMS) software. It presents the analysis for the in-plane silicon microneedles that can be used for blood sampling for biomedical applications. The characteristics of in-plane microneedles are far more reliable than out-of-plane microneedles for blood sampling. In this project, in-plane microneedle was designed by using CoventorWare. From the process until two dimension layout (2D) and also three dimension (3D). For verification, a 3-D model was built, meshed and simulated using the Analyzer solvers. Several needle dimensions were investigated, and the microneedle shape was optimized using mechanical strength analysis. A 3mm long microneedle was used for this project. The strength of the microneedles has been examined analytically and modeled using finite element modelling tools. In addition, fluid also has been examined analytically and modelled using finite volume method tools. For this purposes, 20μm diameter of microchannel was used. Then, by imitating the mosquito’s proboscis, the combined microneedles comprising a central straight needle and two outer jagged needles have been already proposed, and the effectiveness of these needles for easy insertion was investigated by theory.