With the predicted progress towards nanometer-scale feature sizes, GHz clock rates, and microwave wireless communications, there is a growing need to understand the properties of circuits, interconnects, devices, and antennas with nano-scale dimensions. Carbon nanotubes offer a combination of small size, high mobility, large current density and low intrinsic capacitance; moreover, their intrinsic cut-off frequency is expected to be high.
Also nanotubes have a great potential for use as sensors and antennas in biomedical devices. For interrogation of biological systems, we are generally interested in a chemical or physical quantity. These physical quantities are sensed and turned into an optical or electronic signal which is then transmitted (for example through a nanotube antenna) to the measurement system.
We have been extensively investigating the characteristics of both CVD-grown and deposited carbon nanotube RF-transistors, interconnects and nano-antennas. Currently, we are studying signal propagation along nanowires, nanotubes and graphene.
For more information please refer to the following publications:
P.J. Burke, C. Rutherglen,”Towards a single-chip, implantable RFID system: is a single-cell radio possible?”
Biomedical Microdevices, 12(4), 589 (2010)
C. Rutherglen, D. Jain, P.J. Burke,”Nanotube electronics for radiofrequency applications”
Nature Nanotechnology, doi:10.1038/nnano.2009.355 (2009)
C. Rutherglen, P.J. Burke,”Nano-Electromagnetics: Circuit and Electromagnetic Properties of Carbon Nanotubes”
Small, 5(8), 884-906 (2009)
C. Rutherglen, D.Jain, P.J. Burke,”RF Resistance and Inductance of Massively Parallel Single Walled Carbon Nanotubes: Direct, Broadband Measurements and Near Perfect 50 Ohm Impedance Matching”
Applied Physics Letters, 93, 083119 (2008)
Funding source: ARO (MURI)