Kavli Affiliate: Kobus Kuipers | First 5 Authors: Ewold Verhagen, René de Waele, L., Kuipers, Albert Polman | Summary: We identify a route towards achieving a negative index of refraction at optical frequencies based on coupling between plasmonic waveguides that support backwards waves. We show how modal symmetry can be exploited in metal-dielectric waveguide pairs […]
Kavli Affiliate: Laurens Kuipers | First 5 Authors: Matteo Burresi, Tobias Kampfrath, Dries van Oosten, Jord C. Prangsma, Bong-Shik Song | Summary: The ability to actively tune the properties of a nanocavity is crucial for future applications in photonics and quantum information. Two important man-made classes of materials have emerged to mold the flow of […]
Kavli Affiliate: Jos W. Zwanikken | First 5 Authors: Chantal Valeriani, Philip J. Camp, Jos W. Zwanikken, René van Roij, Marjolein Dijkstra | Summary: The problem of successfully simulating ionic fluids at low temperature and low density states is well known in the simulation literature: using conventional methods, the system is not able to equilibrate […]
Kavli Affiliate: Jos Zwanikken | First 5 Authors: Jos Zwanikken, René van Roij, , , | Summary: Within a modified Poisson-Boltzmann theory we study the effect of Bjerrum pairs on the typical length scale $1/bar{kappa}$ over which electric fields are screened in electrolyte solutions, taking into account a simple association-dissociation equilibrium between free ions and […]
Kavli Affiliate: Jos Zwanikken | First 5 Authors: Jos Zwanikken, Joost de Graaf, Markus Bier, René van Roij, | Summary: We calculate ion distributions near a planar oil-water interface within non-linear Poisson-Boltzmann theory, taking into account the Born self-energy of the ions in the two media. For unequal self-energies of cations and anions, a spontaneous […]
Kavli Affiliate: Martin Depken | First 5 Authors: Martin Depken, Helmut Schiessel, , , | Summary: Apart from being the gateway for all access to the eukaryotic genome, chromatin has in recent years been identified as carrying an epigenetic code regulating transcriptional activity. The detailed knowledge of this code contrasts the ignorance of the fiber […]