Silicon Nanowire Arrays-Based Biosensors
Nanowires (NWs) are effective sensing structures due to their large surface area to volume ratio. However, contacting the NW arrays is challenging. Our silicon (Si) NW optoelectronic biosensor is made by a bundle of vertically oriented NWs, allowing us to electrically contact millions of NWs per cm2 simultaneously, compared to 10’s of NWs in other state-of-the-art NW biosensors. We are developing these sensors for cancer antigens, emerging water contaminants such estrogenic compounds, and COVID-19.