Bifurcations of phase portraits of a singular nonlinear equation of the second class

AST Nguetcho, J Li, JM Bilbault - Communications in Nonlinear Science …, 2014 - Elsevier
The soliton dynamics is studied using the Frenkel Kontorova (FK) model with non-convex
interparticle interactions immersed in a parameterized on-site substrate potential. The case …

Wobbling kinks in theory

IV Barashenkov, OF Oxtoby - Physical Review E—Statistical, Nonlinear, and …, 2009 - APS
We present a uniform asymptotic expansion of the wobbling kink to any order in the
amplitude of the wobbling mode. The long-range behavior of the radiation is described by …

Compact-envelope bright solitary wave in a DNA double strand

PB Ndjoko, JM Bilbault, S Binczak, TC Kofané - Physical Review E—Statistical …, 2012 - APS
We study the nonlinear dynamics of a homogeneous DNA chain that is based on site-
dependent finite stacking and pairing enthalpies. We introduce an extended nonlinear …

Interplay role between dipole interactions and hydrogen bonding on proton transfer dynamics

MB Tchouadji Ndjike, AS Tchakoutio Nguetcho, J Li… - Nonlinear …, 2021 - Springer
In almost all works done up to now on proton dynamics in hydrogen-bonded systems, dipole–
dipole interactions have been overlooked. Here, we examine the role of these interactions …

Alternate way of soliton solutions in hydrogen-bonded chain

E Parasuraman, L Kavitha - Waves in Random and Complex …, 2021 - Taylor & Francis
The transport of energy and charge along one-dimensional chains of hydrogen bonds is an
extremely important problem in bioenergetic and solid-state situations. We present an …

Bifurcations and exact solutions in a model of hydrogen-bonded-chains

J Li, F Chen, AS Tchakoutio-Nguetcho - International Journal of …, 2015 - World Scientific
A model of dynamics of protons in hydrogen-bonded quasi-one-dimensional networks was
derived, which is a singular system of the second kind with three parameters and two …

Orbital stability and homoclinic bifurcation in a parametrized deformable double-well potential

MFK Pebeu, FT Ndjomatchoua, TLMD Mbong… - Chaos, Solitons & …, 2020 - Elsevier
The motion of a particle in a one-dimensional deformable double-well potential is studied. In
a case study related deformable potential that permits theoretical adaptation of the model to …

Dipole–dipole interactions effects on mobility and conductivity of ionic and bonded defects in hydrogen-bonded chains

MBT Ndjike, AST Nguetcho, JM Bilbault - Communications in Nonlinear …, 2022 - Elsevier
Defect formation and transport in a hydrogen-bonded system is studied via a two-sublattice
soliton-bearing one-dimensional model. Our two component model completes and extends …

Mobility and conductivity of ionic and bonded defects in hydrogen-bonded chains with nonlinear interactions

AS Tchakoutio Nguetcho, PB Ndjoko… - The European Physical …, 2008 - Springer
The proton conductivity and the mobility arising from motions of the ionic and bonded
defects, in hydrogen-bonded molecular systems are investigated by means of the quantum …

Propagation d'informations le long d'une ligne de transmission non linéaire structurée en super réseau et simulant un neurone myélinisé

GM Nkeumaleu - 2019 - theses.hal.science
Les systèmes non linéaires sont décrits pour la plupart avec des équations aux dérivées
partiellesqui les caractérisent, comme la chaine de pendules couplés, la chaine de …