Dynamic scaling analysis of two-dimensional cell colony fronts in a gel medium: A biological system approaching a quenched Kardar-Parisi-Zhang universality

2014 ◽  
Vol 90 (2) ◽  
Author(s):  
M. A. C. Huergo ◽  
N. E. Muzzio ◽  
M. A. Pasquale ◽  
P. H. Pedro González ◽  
A. E. Bolzán ◽  
...  
2002 ◽  
Vol 16 (08) ◽  
pp. 1217-1223 ◽  
Author(s):  
K. V. MCCLOUD ◽  
M. L. KURNAZ

The roughness exponent of surfaces obtained by dispersing silica spheres into a quasi-two-dimensional cell is examined. The cell consists of two glass plates separated by a gap, which is comparable in size to the diameter of the beads. Previous work has shown that the quasi-one-dimensional surfaces formed have two roughness exponents in two length scales, which have a crossover length about 1 cm. We have studied the effect of changing the gap between the plates to a limit of about twice the diameter of the beads. If the conventional scaling analysis is performed, the roughness exponent is found to be robust against changes in the gap between the plates; however, the possibility that scaling does not hold should be taken seriously.


2017 ◽  
Vol 17 (08) ◽  
pp. 1730003
Author(s):  
H. GHAZIZADEH ◽  
S. ARAVAMUDHAN

The focus of this paper is to describe the mechanism and behavior of two-dimensional in vitro cell stretch platforms, as well as discussing designs for the evaluation of mechanical properties of cells. It is extremely important to understand the cellular response to extrinsic mechanical forces as living biological system is constantly subjected to mechanical forces in vivo. In addition, this mechanistic understanding of cellular response will provide valuable information towards the design and fabrication of bioengineered tissues and organs, which are expected to replace and/or aid bodily functions. This paper will primarily focus on the development, advantages and limitations of two-dimensional cell stretch platforms.


2009 ◽  
Author(s):  
Iraís Solís ◽  
M. Torres-Cisneros ◽  
J. G. Aviña-Cervantes ◽  
O. G. Ibarra-Manzano ◽  
O. Debeir ◽  
...  

1992 ◽  
Vol 27 (4) ◽  
pp. 947-955 ◽  
Author(s):  
G. E. W. Schulze ◽  
W. A. Schulze

2002 ◽  
Vol 51 (10) ◽  
pp. 838-840 ◽  
Author(s):  
Lynn D Selemon ◽  
Grazyna Rajkowska

Author(s):  
Maël Le Berre ◽  
Ewa Zlotek-Zlotkiewicz ◽  
Daria Bonazzi ◽  
Franziska Lautenschlaeger ◽  
Matthieu Piel

2008 ◽  
Vol 22 (20) ◽  
pp. 3421-3431
Author(s):  
MALAY K. NANDY

We evaluate the universal turbulent Prandtl numbers in the energy and enstrophy régimes of the Kraichnan-Batchelor spectra of two-dimensional turbulence using a self-consistent mode-coupling formulation coming from a renormalized perturbation expansion coupled with dynamic scaling ideas. The turbulent Prandtl number is found to be exactly unity in the (logarithmic) enstrophy régime, where the theory is infrared marginal. In the energy régime, the theory being finite, we extract singularities coming from both ultraviolet and infrared ends by means of Laurent expansions about these poles. This yields the turbulent Prandtl number σ ≈ 0.9 in the energy régime.


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