Research Projects
| Current Research Topics |
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Non-Equilibrium Transport in Nano-Devices: Unusual physical phenomena evolve when mesoscopic systems are driven into nonlinear transport regime. These phenomena can be utilized to build novel nanoelectronic devices and are quite challenging from the theoretical point of view as well. |
| Recently in our experiments performed in our laboratory at Sabanci University we discovered a three terminal absolute negative resistance (ANR) in two dimensional electron gas. This is the first time observation of ANR in a normal conductor.
Absolute negative resistance is seen in this nano-device. The analysis of the results show that reduced dimensionality leads to the observation of such an effect which is the analog of Bernouli-Venturi effect classical gases. This rather simple device which does not even require magnetic field could be utilized in future nanoelectronics for various functions including very high frequency sources.
Here is the coverage of our discovery by Physics World Magazine. Project funded by TUBITAK (104T316).
Graphene Nano-Electronics: Carbon atoms ordered in a honeycomb arrangement was recently shown to be existing unlike the previous theoretical estimates. Graphene is a new two dimensional material with outstanding electronic and mechanical properties. It is rapidly becoming the strongest candidate to replace the well establish Silicon based electronics technology. Research in graphene is also very rich in terms of fundamental physics.
Epitaxial growth of graphene from Silicon Carbide in our ultra high vacuum chamber. We are experimentally studying the charge transport in graphene. We make graphene epitaxially from Silicon Carbide (SiC) and also by mechanical exfoliation of graphite.
A graphene sheet exfoliated from graphite and patterned into a Hall Bar by Nanolithography at QTNEL. Our research with graphene aims to understand the nature of charge carrier scattering in this material. Our ?graphene? project is funded by TUBITAK (107T855). Nano Electro Mechanical Systems ( NEMS) : We pursue NEMS research for development of novel high-performance sensors and fabrication techniques to impact the sensor technology and nanotechnology.
Nanogaps of down to sub-nanometer size are fabricated in QTNEL. The project stands at the interface of different disciplines, such as physics, electronics, materials science and nanotechnology. Our NEMS project is funded by TUBITAK (108T492). |
