Rapid determination of the absorptivity for a recombinant IgG monoclonal antibody using the Beckman equipped with both Raleigh interference and UV absorbance optical systems. The analytical ultracentrifuge data for determining spectrophotometric absorptivities is compared to experimental data from quantitative amino acid analysis and an enzymatic digestion method.

Surface scattered sunlight carries important information about the composition and microtexture of surface materials, thus enabling tracing back the geological and climatic processes that occurred on the planetary body. Here we perform laboratory spectro-goniometric measurements of granular samples (45–75 lm fraction) with different composition and physical properties over the VIS–NIR spectral ...

It is demonstrated theoretically that the absorptivity of bulk shear sagittal waves by an ultra-thin layer of viscous fluid between two different elastic media has a strong maximum (in some cases as good as 100%) at an optimal layer thickness. This thickness is usually much smaller than the penetration depths and lengths of transverse and longitudinal waves in the fluid. The angular dependencie...

In this paper, we propose an angle- and polarization-insensitive metamaterial absorber. We design a metamaterial unit cell that is based on a split ring cross resonator (SRCR). We observe that the absorption frequency and absorption ratio are insensitive to incident angles when a via array surrounds the SRR. We demonstrate the effect of the via array using full-wave simulations by comparing the...

A 1 kW CW green laser source operating at 515 nm was used to investigate the absorptivity of pure copper powder beds and substrates. Various interaction regimes were considered, ranging from solid and/or layers, liquid state up deep penetration keyhole regime. Reflectance measurements carried out using an Ulbricht integrating sphere during static tests single L-PBF tracks. For each experiment, ...

Abstract Based on the first principle, this paper studies optical properties of Ni, Mo, CoO, and Cr 2 O 3 according to Materials Studio software. It is found that absorptivity Ni low, while has low emissivity. Hence, it can be used reduce The absorption rate CoO very high. Therefore, are suitable composed make a solar selective coating with high mass ratio greater impact composite material, so ...

Abstract Thermo-anodization technology has been considered as an effective means to improve the thermal, physical and chemical properties for metal alloy. In this work, we achieve a porous black layer on surface of aluminium alloy through environmentally friendly anodic oxidation process, with high thermal emittance (0.96) solar absorptivity (0.921). addition, thermo-anodized coating shows uniq...

Thermal mapping of surface waters and the land via UAVs offers exciting opportunities in many scientific disciplines; however, unresolved issues persist related to accuracy drift uncooled microbolometric thermal infrared (TIR) sensors. Curiously, most commercially available UAV-based TIR sensors are black, which will theoretically facilitate heating sensor absorbed solar radiation. Accordingly,...