Conformal Growth of Organic Luminescent Planar Defects within Artificial Opals

Optical Studies of Artificial Opals as 3d Photonic Crystals

Artificial opal films have been prepared by sedimentation of monodisperse silica spheres in water suspension. Atomic force microscope images show a triangular packing of the spheres at the surface of the films. The presence and the energy position of an optical pseudo gap in incidence-angle-dependent transmittance and reflectance spectra is observed and accounted for by theoretical calculations...

Synthesis of luminescent europium defects in diamond.

Lanthanides are vital components in lighting, imaging technologies and future quantum memory applications owing to their narrow optical transitions and long spin coherence times. Recently, diamond has become a pre-eminent platform for the realisation of many experiments in quantum information science. Here we demonstrate a promising approach to incorporate Eu ions into diamond, providing a mean...

Planar Conformal Mappings of Pie ewise FlatSurfa

Planar Conformal Mappings of Piecewise Flat Surfaces

There is a rich literature in the theory of circle packings on geometric surfaces that from the beginning has exposed intimate connections to the approximation of conformal mappings. Indeed, one of the first publications in the subject, Rodin and Sullivan’s 1987 paper [10], provides a proof of the convergence of a circle packing scheme proposed by Bill Thurston for approximating the Riemann map...

Iterative Closest Conformal Maps between Planar Domains

Conformal maps between planar domains are an important tool in geometry processing, used for shape deformation and image warping. The Riemann mapping theorem guarantees that there exists a conformal map between any two simply connected planar domains, yet computing this map efficiently remains challenging. In practice, one of the main algorithmic questions is the correspondence between the boun...