1 research outputs found
Complementary Metal-Oxide-Semiconductor Integrated Carbon Nanotube Arrays: Toward Wide-Bandwidth Single-Molecule Sensing Systems
There is strong interest in realizing
genomic molecular diagnostic
platforms that are label-free, electronic, and single-molecule. One
attractive transducer for such efforts is the single-molecule field-effect
transistor (smFET), capable of detecting a single electronic charge
and realized with a point-functionalized exposed-gate one-dimensional
carbon nanotube field-effect device. In this work, smFETs are integrated
directly onto a custom complementary metal-oxide-semiconductor chip,
which results in an array of up to 6000 devices delivering a measurement
bandwidth of 1 MHz. In a first exploitation of these high-bandwidth
measurement capabilities, point functionalization through electrochemical
oxidation of the devices is observed with microsecond temporal resolution,
which reveals complex reaction pathways with resolvable scattering
signatures. High-rate random telegraph noise is detected in certain
oxidized devices, further illustrating the measurement capabilities
of the platform