Zobrazeno 1 - 10
of 47
pro vyhledávání: '"K. J. Challis"'
Publikováno v:
Journal of Theoretical Biology. 462:321-328
Stochastic trajectories measured in single-molecule experiments have provided key insights into the microscopic behaviour of cyclic motor proteins. However, the fundamental free-energy landscapes of motor proteins are currently only able to be determ
Publikováno v:
Physical Review E. 102
We consider enhanced diffusion for Brownian motion on a tilted periodic potential. Expressing the effective diffusion in terms of the eigenvalue band structure, we establish a connection between band gaps in the eigenspectrum and enhanced diffusion.
Publikováno v:
Physical Review E. 100
Diffusion on a free-energy landscape is a fundamental framework for describing molecular motors. In the landscape framework, energy conversion between different forms of energy, e.g., chemical and mechanical, is explicitly described using multidimens
Autor:
K. J. Challis
Publikováno v:
Physical review. E. 97(6-1)
We present a tight-binding derivation of a discrete-continuous description of mechanochemical coupling in a molecular motor. Our derivation is based on the continuous diffusion equation for overdamped Brownian motion on a time-independent tilted peri
Publikováno v:
Physical review. E. 97(3-1)
We present a method for reconstructing the free-energy landscape of overdamped Brownian motion on a tilted periodic potential. Our approach exploits the periodicity of the system by using the k-space form of the Smoluchowski equation and we employ an
Publikováno v:
Physical review. E. 94(5-1)
We present a general method for transforming the continuous diffusion equation describing overdamped Brownian motion on a time-independent potential with multiple deep wells to a discrete master equation. The method is based on an expansion in locali
Autor:
K. J. Challis
Publikováno v:
Physical review. E. 94(6-1)
We present a numerical study of the tight-binding approach to overdamped Brownian motion on a tilted periodic potential. In the tight-binding method the probability density is expanded on a basis of Wannier states to transform the Smoluchowski equati
Publikováno v:
Physical Review E. 93
We present a theoretical treatment of overdamped Brownian motion on a time-independent bichromatic periodic potential with spatially fast- and slow-changing components. In our approach, we generalize the Wannier basis commonly used in the analysis of
Autor:
H.Y. Yu, Youngju Park, Jin Gyu Park, Alan B. Kaiser, Sung Ho Jhang, G.C. McIntosh, K. J. Challis, G.T. Kim
Publikováno v:
Current Applied Physics. 2:163-166
The measured resistance of carbon nanotube networks is often dominated by defects, inter-tube and inter-rope contacts. We show that the peak reported in the frequency-dependent conductivity of single-wall carbon nanotube networks is consistent with m
Tight-binding approach to overdamped Brownian motion on a multidimensional tilted periodic potential
Autor:
Michael W. Jack, K. J. Challis
Publikováno v:
Physical Review E. 87
We present a theoretical treatment of overdamped Brownian motion on a multidimensional tilted periodic potential that is analogous to the tight-binding model of quantum mechanics. In our approach, we expand the continuous Smoluchowski equation in the