Publications associées à A complete graph effective medium approximation for lattice and continuum percolation

Simplex solids in SU(N) Heisenberg models on the kagome and checkerboard lattices

We present a numerical study of the SU(N) Heisenberg model with the fundamental representation at each site for the kagome lattice (for N = 3) and the checkerboard lattice (for N = 4), which are the line graphs of the honeycomb and square lattices and thus ...

2012

Tunneling and percolation transport regimes in segregated composites

Peter Ryser, Claudio Grimaldi, Biagio Nigro

We consider the problem of electron transport in segregated conductor-insulator composites in which the conducting particles are connected to all others via tunneling conductances, thus forming a global tunneling-connected resistor network. Segregation is ...

2012

Tunneling conductivity in composites of attractive colloids

Peter Ryser, Claudio Grimaldi, Biagio Nigro

In conductor-insulator nanocomposites in which conducting fillers are dispersed in an insulating matrix, the electrical connectedness is established by inter-particle tunneling or hopping processes. These systems are intrinsically non-percolative and a coh ...

American Institute of Physics2012

Critical Percolation: the Expected Number of Clusters in a Rectangle

Clément Hongler, Stanislav Smirnov

We show that for critical site percolation on the triangular lattice two new observables have conformally invariant scaling limits. In par- ticular the expected number of clusters separating two pairs of points converges to an explicit conformal invariant. ...

Springer Verlag2011

Percolation-to-hopping crossover in conductor-insulator composites

Claudio Grimaldi, Gianluca Ambrosetti

Here, we show that the conductivity of conductor-insulator composites in which electrons can tunnel from each conducting particle to all others may display both percolation and tunneling (i.e., hopping) regimes depending on few characteristics of the compo ...

2010

The transition in hydrogen sensing behavior in non-continuous palladium films

Jürgen Brugger, Luis Guillermo Villanueva Torrijo, Thomas Kiefer

The morphological transition in ultrathin palladium (Pd) films around the percolation threshold and the related transition in hydrogen sensing behavior is investigated.We find that besides the transition from continuous to discontinuous Pd, an intermediate ...

American Institute of Physics2010

Graph-Constrained Group Testing

Amin Karbasi, Mahdi Cheraghchi Bashi Astaneh, Soheil Mohajerzefreh

Non-adaptive group testing involves grouping arbitrary subsets of

n

items into different pools and identifying defective items based on tests obtained for each pool. Motivated by applications in network tomography, sensor networks and infection propagati ...

Ieee Service Center, 445 Hoes Lane, Po Box 1331, Piscataway, Nj 08855-1331 Usa2010

Plague outbreaks in prairie dog populations explained by percolation thresholds of alternate host abundance

Marcel Salathé

Highly lethal pathogens (e.g., hantaviruses, hendra virus, anthrax, or plague) pose unique public-health problems, because they seem to periodically flare into outbreaks before disappearing into long quiescent phases. A key element to their possible contro ...

2010

On the origin of transport non-universality and piezoresistivity in segregated conductor-insulator composites and application to thick-film resistors

Niklaus Johner

In this thesis we address the description of electrical transport properties of disordered conductor-insulator composites, mostly by numerical Monte Carlo simulations and analytical study of realistic tunnelling-percolation models. Such composites are basi ...

EPFL2009

Degree-constrained edge partitioning in graphs arising from discrete tomography

Dominique de Werra, Bernard Ries

Starting from the basic problem of reconstructing a 2-dimensional image given by its projections on two axes, one associates a model of edge coloring in a complete bipartite graph. The complexity of the case with k=3 colors is open. Variations and special ...

2009

A complete graph effective medium approximation for lattice and continuum percolation

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Simplex solids in SU(N) Heisenberg models on the kagome and checkerboard lattices

Tunneling and percolation transport regimes in segregated composites

Tunneling conductivity in composites of attractive colloids

Critical Percolation: the Expected Number of Clusters in a Rectangle

Percolation-to-hopping crossover in conductor-insulator composites

The transition in hydrogen sensing behavior in non-continuous palladium films

Graph-Constrained Group Testing

Plague outbreaks in prairie dog populations explained by percolation thresholds of alternate host abundance

On the origin of transport non-universality and piezoresistivity in segregated conductor-insulator composites and application to thick-film resistors

Degree-constrained edge partitioning in graphs arising from discrete tomography

Tunneling conductivity in composites of attractive colloids

On the origin of transport non-universality and piezoresistivity in segregated conductor-insulator composites and application to thick-film resistors

Tunneling and percolation transport regimes in segregated composites

Degree-constrained edge partitioning in graphs arising from discrete tomography

The transition in hydrogen sensing behavior in non-continuous palladium films

Plague outbreaks in prairie dog populations explained by percolation thresholds of alternate host abundance

Graph-Constrained Group Testing

Simplex solids in SU(N) Heisenberg models on the kagome and checkerboard lattices

Percolation-to-hopping crossover in conductor-insulator composites

Critical Percolation: the Expected Number of Clusters in a Rectangle