  This research explores the design and conducts a comparative analysis of a
noninsulated Capacitive Micromachined Ultrasonic Transducer (CMUT) featuring an
innovative asymmetric electrode configuration to improve the performance of the
device. Specifically, this configuration involves the utilization of a top
electrode with a smaller radius in comparison to the bottom electrode. The
study encompasses an investigation into the effects of varying biasing voltage
within the range of 40 V to 100 V. The materials employed in this study are
carefully selected to optimize the CMUT's performance. The substrate material
is silicon, and the bottom and top electrodes are made from aluminium.
Additionally, silicon dioxide is utilized as the foundation material within the
device's structure.
