Carbon Nanotube Resonators

This lecture presents the CAPTCHAs project, focusing on resonating carbon nanotube sensors. The project involves research on ultra low power and small sensors, demonstrating tunable mechanical resonance and a new circuit architecture for piezoresistive readout. The lecture covers the development of a process for growing carbon nanotubes, understanding the adsorption of chemical species on the nanotubes, and integrating them onto silicon substrates. The researchers also discuss the fabrication of carbon nanotube resonators with in-situ tuning properties for RF and sensing applications, as well as the design of electronic circuits for signal conditioning and driver electronics.