Nanoparticle embedded double-layer coating for daytime radiative cooling

Nanoparticle embedded double-layer coating for daytime radiative cooling

Ultrabroadband photonic structures to achieve high-performance daytime radiative cooling.

If properly designed, terrestrial structures can passively cool themselves through radiative emission of heat to outer space. For the first time, we present a metal-dielectric photonic structure capable of radiative cooling in daytime outdoor conditions. The structure behaves as a broadband mirror for solar light, while simultaneously emitting strongly in the mid-IR within the atmospheric trans...

Double-Layer Magnetic Nanoparticle-Embedded Silica Particles for Efficient Bio-Separation

Superparamagnetic Fe3O4 nanoparticles (NPs) based nanomaterials have been exploited in various biotechnology fields including biomolecule separation. However, slow accumulation of Fe3O4 NPs by magnets may limit broad applications of Fe3O4 NP-based nanomaterials. In this study, we report fabrication of Fe3O4 NPs double-layered silica nanoparticles (DL MNPs) with a silica core and highly packed F...

Double layer coating for high resolution low temperature SEM

Specimen damage caused by mass loss due to electron beam irradiation is a major limitation in Low Temperature Scanning Electron Microscopy of bulk specimens. At high primary magnifications (e.g. 100 000 x) a hydrated sample is usually severely damaged after one slow scan (about 3000 enm-2). The consequences of this beam damage are remarkably reduced by coating the frozen-hydrated sample with a ...

Radiative sky cooling :

Radiative sky cooling reduces the temperature of a system by promoting heat exchange with the sky; its key advantage is that no input energy is required. We will review the origins of radiative sky cooling from ancient times to the modern day, and illustrate how the fundamental physics of radiative cooling calls for a combination of properties that may not occur in bulk materials. A detailed co...