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13 papers · 1 filter
Experimental and Theoretical Aspects of the Fragmentation of Carbon's Single and Multi-Walled Nanotubes
Sumera Javeed, Shoaib Ahmad
Energetic ion irradiation is an effective method for studying how single and multi-shelled carbon nanotubes break apart. The energy from ions is dissipated through both linear and…
Effects of Interface Steps on the Valley Orbit coupling in a Si/SiGe quantum dot
Bilal Tariq, Xuedong Hu
Valley-orbit coupling is a key parameter for a silicon quantum dot in determining its suitability for applications in quantum information processing. In this paper we study the eff…
Information-theoretic model of self-organizing fullerenes and the emergence of C60
Shoaib Ahmad
An information-theoretic model describes the dissipative dynamical systems composed of ensembles of fragmenting, self-organizing fullerenes. The probabilities derived from the vari…
Space-filling, multi-fractal, localized thermal spikes in silicon, germanium and zinc oxide
Shoaib Ahmad, Muhammad Sabtain Abbas, Muhammad Yousuf +3
The mechanism responsible for the emission of clusters from heavy ion irradiated solids is proposed to be thermal spikes. Collision cascade-based theories describe atomic sputterin…
An information theoretic model for the linear and nonlinear dissipative structures in irradiated single-walled carbon nanotubes
Afshan Ashraf, Sumera Javeed, Sumaira Zeeshan +2
Experiments with irradiated single-walled carbon nanotubes are shown to generate a set of probability distribution functions and to derive a set of information theoretic entropy-ba…
Collision-dominated conductance in clean 2D metals
A. Uzair, K. Sabeeh, Markus Mueller
We study the temperature-dependent corrections to the conductance due to electron-electron (e-e) interactions in clean two-dimensional conductors, such as lightly doped graphene or…