John C. Neu
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View article: Kinking and buckling instability in growing bacterial chains
Kinking and buckling instability in growing bacterial chains Open
Many gram-positive bacteria like Bacillus subtilis and Clostridium species, exhibit a growing chain–mediated sliding motility that is driven entirely by the force of cell growth. Particularly, the bacteria maintain cell-cell linkage after …
View article: Irreversible dynamics of a continuum driven by active matter
Irreversible dynamics of a continuum driven by active matter Open
We study the fluctuational behavior of overdamped elastic filaments (e.g., strings or rods) driven by active matter which induces irreversibility. The statistics of discrete normal modes are translated into the continuum of the position re…
View article: Charging capacitors from thermal fluctuations using diodes
Charging capacitors from thermal fluctuations using diodes Open
We theoretically consider a graphene ripple as a Brownian particle coupled to an energy storage circuit. When circuit and particle are at the same temperature, the second law forbids harvesting energy from the thermal motion of the Brownia…
View article: Evolution of magnetic surfboards and spin glass behavior in (Fe<sub>1−<i>p</i> </sub>Ga<i> <sub>p</sub> </i>)<sub>2</sub>TiO<sub>5</sub>
Evolution of magnetic surfboards and spin glass behavior in (Fe<sub>1−<i>p</i> </sub>Ga<i> <sub>p</sub> </i>)<sub>2</sub>TiO<sub>5</sub> Open
The unusual anisotropy of the spin glass (SG) transition in the pseudobrookite system Fe 2 TiO 5 has been interpreted as arising from an induced, van der Waals-like, interaction among magnetic clusters. Here we present susceptibility ( )…
View article: Stochastic line integrals and stream functions as metrics of irreversibility and heat transfer
Stochastic line integrals and stream functions as metrics of irreversibility and heat transfer Open
Stochastic line integrals provide a useful tool for quantitatively characterizing irreversibility and detailed balance violation in noise-driven dynamical systems. A particular realization is the stochastic area, recently studied in couple…
View article: Repulsive expansion dynamics in colony growth and gene expression
Repulsive expansion dynamics in colony growth and gene expression Open
Spatial expansion of a population of cells can arise from growth of microorganisms, plant cells, and mammalian cells. It underlies normal or dysfunctional tissue development, and it can be exploited as the foundation for programming spatia…
View article: Repulsive expansion dynamics in colony growth and patterning
Repulsive expansion dynamics in colony growth and patterning Open
Spatial expansion of a population of cells can arise from growth of microorganisms, plant cells, and mammalian cells. It underlies normal or dysfunctional tissue development and it can be exploited as the foundation for programming spatial…
View article: Experimental metrics for detection of detailed balance violation
Experimental metrics for detection of detailed balance violation Open
We report on the measurement of detailed balance violation in a coupled, noise-driven linear electronic circuit consisting of two nominally identical RC elements that are coupled via a variable capacitance. The state variables are the time…
View article: The Geometry of Most Probable Trajectories in Noise-Driven Dynamical\n Systems
The Geometry of Most Probable Trajectories in Noise-Driven Dynamical\n Systems Open
This paper presents a heuristic derivation of a geometric minimum action\nmethod that can be used to determine most-probable transition paths in\nnoise-driven dynamical systems. Particular attention is focused on systems that\nviolate deta…