Experimental investigation of the effect of topological insulator on the magnetization dynamics of ferromagnetic metal:BiSbTe1.5Se1.5andNi80Fe20heterostructure.

We have studied the spin-pumping phenomenon in ferromagnetic metal (FM) (Ni80Fe20)/topological insulator (TI) (BiSbTe1.5Se1.5) bilayer system to understand magnetization dynamics of FM in contact with a TI.

A short-circuited coplanar waveguide for low-temperature single-port ferromagnetic resonance spectroscopy setup to probe the magnetic properties of ferromagnetic thin films.

A coplanar waveguide shorted in one end is proposed, designed, and implemented successfully to measure the properties of magnetic thin films as a part of the vector network analyzer ferromagnetic resonance (FMR) spectroscopy setup. Its simple structure, potential applications, and easy installation inside the cryostat chamber made it advantageous especially for low-temperature measurements. It provides a wide band of frequencies in the gigahertz range essential for FMR measurements.

Supercritical carbon dioxide extraction of lutein from yellow maize () kernels: process optimization based on lutein content, antioxidant activity, and ω-6/ω-3 fatty acid ratio.

Yellow maize kernels were subjected to supercritical carbon dioxide (SC-CO) extraction to obtain a lutein-rich extract with potential nutraceutical properties. SC-CO extraction parameters (pressure and temperature) were optimized by employing a full-factorial (3) design of experiments and response surface methodology, based on yield of lutein, antioxidant activity, and ω-6/ω-3 fatty acid ratio of the extracts. A Chrastil equation was also developed for predicting the solubility of lutein in SC-CO under different extraction conditions.

Effect of Packaging on Shelf-life and Lutein Content of Marigold (Tagetes erecta L.) Flowers.

Background: African marigold (Tagetes erecta L.) flowers are highly valued for their ornamental appeal as well as medicinal properties. However, their short shelf lives cause high post-harvest loss and limit their export potential.