Self-assembly of charged Bodipy dyes to form Cassettes that display intracomplex electronic energy transfer and accrete into liquid crystals

Red- and blue-absorbing boron dipyrromethene dyes, bearing opposite electronic charges, associate in solution to form a 1:2 complex having a stability constant of ca. 10(17) M(-2). The complex can be dismantled by addition of a large excess of tetra-N-butylammonium cations. The same complex displays liquid crystalline properties on heating from rt to above 150 °C, as characterized by various experimental techniques. Highly efficient electronic energy transfer from the red to the blue dye occurs in both the initial complex and the subsequent mesomorphic state.     

Silver nanoparticles on conducting electrode: a simple two-step process for realizing plasmonic solar cell design

In this paper we address the introduction of antenna’s radiation pattern agility using an agile metamaterial. We design an agile metamaterial having two different behaviors which can be controlled by an external command. This agile metamaterial is used to design an agile lens which comprises two grids each composed of two regions: the first one constitutes a focusing zone (FZ) and the second one the lens body. The focusing zone parameters—refraction index, size, shape and position in the grid—can be modified using an external switching system (OFF or ON stat); by modifying the FZ parameters one can control the patch antenna’s radiation-pattern main-lobe beamwidth and direction (pointing angle) in E- and H-planes.     

Entropy analysis of Powell–Eyring hybrid nanofluid including effect of linear thermal radiation and viscous dissipation

Journal of Thermal Analysis and Calorimetry - Hybrid nanofluids are introduced as heat transfer fluids with greater surface stability, diffusion and dispersion capabilities compared to traditional...