Projects
Carbon based Nano-electronic and Spintronic Device Applications Project:
Carbon based Nano-electronic and Spintronic Device Applications Project:
With the support of South African government funding agencies (NRF) I have been successful in establishing a research group, the Nano-Scale Transport Physics Laboratory (NSTPL) which has facilities for the nanoelectronic device fabrication and study of quantum transport in nano-materials at low temperatures (300 milli Kelvin), high magnetic fields (12 Tesla) and high frequencies (10 MHz – 65 GHz). All of our works during 2012-2015 were performed in the NSTPL have been successful in the following areas: .
- Disorder induced superconductivity in diamond films both experimentally and theoretically [several publications].
- Quantum transport in nanotube and silicon nanowire-based devices created by e-beam lithography.
- Device (waveguides) fabrication using nano-manipulators from graphite flakes.
- High frequency response measurements up to 67 GHz in nanotube devices at 4 K.
- Theoretical model explaining the quantum transport in carbon films: Superlattice structures.
- Project on carbon spintronics: Development of Carbon Fermionic-Bosonic-Spintronic Quantum Information Devices in tandem with a search for evidence for elusive theoretically predicted critical phenomena
- Hybrid carbon superconductor – graphene- ferromagnetic spintronics
The idea is to sandwich a thin (~5 nm) layer of a ferromagnetic or superconducting material between two graphene layers perched on superconducting electrodes. This requires graphene transfer onto prefabricated superconducting electrodes. I have successfully been able to exfoliate graphene and transfer it to prefabricated gold electrode.
- Heterostructure carbon-emergent 2D devices
- Project on high speed electronics (near terahertz regime):
The idea is to create a multilayer device with alternating monolayers of graphene and atomically thick emergent 2D materials such as silicene and phosphorene as channel for transistor devices.
Devices based on the partner’s own materials may be made in their facility with their expertise. The main projects are: (i) Carbon nanotube based devices. (ii) Graphene based devices. (iii) SiNW based devices. (iv) Diamond-based devices (v) Carbon heterostructures and quantum well system. A solid understanding of the device physics that we have acquired from the theoretical work will be useful in the development of novel devices concepts and simulation of devices.
- Carbon Resonant Tunnel & Spintronic Devices: Extended to spin tunnel & superconducting junctions
- Carbon nanotube based device on coplanar waveguides for combined high frequency, magnetic field dependent and gate response studies. Radiation detectors based or nanotube network.
- Coulomb and Pauli blockade transport spectroscopy devices:
- Memory devices: NRAM based on crossed nanotubes or network of nanotubes of special geometry.
- Suspended Si nanowires devices:
- Graphene based devices:
- Diamond based devices: Superconducting ultra-nanocrystalline diamond film based devices and Diamond on coplanar waveguides for combined high frequency, magnetic field dependent and gate response studies.
Device: A network of nanotube hybrid devices for magneto-opto-electronics (interference in condensed states)
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