Engineering Temperature‐Dependent Carrier Concentration in Bulk Composite Materials via Temperature‐Dependent Fermi Level Offset

Engineering Composite Materials

Microhardness of Bulk-Fill Composite Materials

The aim of the study was to determine microhardness of high- and low-viscosity bulk-fill composite resins and compare it with conventional composite materials. Four materials of high-viscosity were tested, including three bulk-fills: QuiXfi l (QF), x-tra fi l (XTF) and Tetric EvoCeram Bulk Fill (TEBCF), while nanohybrid composite GrandioSO (GSO) served as control. The other four were low-viscos...

Quantitative modeling of the temperaturedependent internal quantum efficiency in InGaN light emitting diodes

The temperature dependence of the internal quantum efficiency (IQE) of blue InGaN-based light emitting diodes is analyzed both experimentally and theoretically with a drift-diffusion transport model. A high-performance reference structure and two improved epitaxial designs are compared at different operating temperatures. In contrast to a simple ABC model, the proposed approach allows for quant...

A gravity current model of cooling mantle plume heads with temperaturedependent buoyancy and viscosity

Gravity currents are a ubiquitous fluid dynamical phenomenon which involve the horizontal spreading of fluid masses under their own weight or buoyancy. A theoretical model is developed to account for the effects of bulk cooling on the dynamics and morphology of geological gravity currents, with particular focus on mantle plume heads spreading beneath the lithosphere. As many geological gravity ...

Composite Fermi liquids in the lowest Landau level