Design And Analysis of Slotted T- Shape Microcantilever for Volatile organic Compound Detection

In this study, we discuss the design and simulation of a micro- cantilever-based sensor for detecting volatile organic compound in human exhaled breath. The micro-cantilever’s displacement and deflection are analyzed using static mode analysis in this work. The micro-cantilever is designed with COMSOL multiphysics 5.0 version. The proposed
micro-cantilever as three layers, with space for seven slots. In this case, the antigen is the volatile organic compound (VOC) in exhaled air, and the antibody is the gold that will be coated on the top surface of the micro-antilever and which gets interact with the antigen. Whenever
antigen and the antibody bind together then the body of the micro-cantilever will bend. The antibody coating on the micro-cantilever which contain the present antigen of the exhales breath VOC which deflects the body of the cantilever. The simulation result illustrates the variation
in micro-cantilever displacement due to an increase in the applied force, demonstrating the improved sensitivity. It is observed that the proposed Slotted T-Shape cantilever displacement is 70x10-5μm.
Keywords: Volatile Organic Compound (VOC), Micro-cantilever (MCL), Static Mode, Displacement, Antigen, Antibody.