The field of metamaterials and the formalism of transformation optics have provided a prescription for constructing artificial dielectrics with unique properties such as light trapping and cloaking. Here, we describe a different approach to creating an inhomogeneous artificial medium, based on waveguide techniques, which does not rely on engineered subwavelengthscale components. We demonstrate ...

A diffraction theory of continuous-wave photothermal deflection (PD) spectroscopy with fundamental and harmonic responses is presented. The displacement of the probe beam centroid is found to be a rigorous measurement of PD effect, which leads to a set of analytical solutions to the fundamental and the second-order harmonics. Harmonics are caused by the diffraction of the probe beam in the mira...

A Michelson interferometer was used as a precise detector in the Mirage effect configuration in order to determine the thermal diffusivity of the diluted rnagnetic semiconductor Cd, -,Mn,Te, in the concentration range O<x<0.6 at roorn ternperature. This zinc-blende temary alloy exhibits an alrnost linear behavior of the thermal diffusivity as a function of Mn concentration. This trend is simila...

Recensé : Abou B. Bamba, African Miracle, Mirage. Transnational Politics and the Paradox of Modernization in Ivory Coast, Athens, Ohio University Press, 2016, 297 p.

Shifts in late-counted votes often spark unfounded claims of electoral fraud. These exploit the early-count mirage: expedient illusion that, absent fraud, an early advantage will persist. We characterize mirage and evaluate associated fraud four disputed elections, focusing on case Bolivia 2019. When delivered a narrow victory for incumbent, accusations followed—with dramatic political conseque...

Mirage mediation realized in the Kachru-Kallosh-Linde-Trivedi (KKLT) flux compactification can naturally suppress up-type Higgs soft mass at low energy scales. As a result, compared to conventional scenarios, degree of electroweak fine-tuning be reduced further up by loop factor if Higgsinos are much lighter than heavy doublet. Interestingly, this feature holds even high-scale supersymmetry as ...

A weak instability mode, associated with phase-locked counterpropagating coastal Kelvin waves in horizontal anticyclonic shear, is found in the semigeostrophic (SG) equations for stratified flow in a channel. This SG instability mode approximates a similar mode found in the Euler equations in the limit in which particle-trajectory slopes are much smaller than f /N, where f is the Coriolis frequ...

A major goal of CMB experiments is to obtain highly sensitive CMB maps in order to extract Spherical Harmonic Power Spectrum (SHPS) and cosmological parameters with unprecedented accuracy. We present a new map-making code (Mirage), based on a two-phase iterative algorithm, involving low frequency drift treatment, Butterworth high-pass filtering and conjugate gradient method. This work was stron...