Microwave Sensing using Flexible Acoustofluidic Devices

In this work, a new concept for integrated biosensing technology is presented by combining the functionalities of metamaterial-based resonators and surface acoustofluidic devices on a single platform. The idea is to use a single structure in microwave frequencies for high-precision sensing and in radio frequencies for fluid manipulation. There is also a potential use of these structures in wearable biosensors by fabricating them on flexible substrates. The fabricated device operates in 5.5 GHz as a metamaterial-based resonator and in 40.3 MHz as a surface acoustic wave transducer for pumping application on a flexible substrate.