Optically Active Defects Induced by 10 MeV Electron Beam in Transparent MgAl2O4 Ceramics

Unique mechanical properties of nanostructured transparent MgAl2O4 ceramics

Nanoindentation tests were performed on nanostructured transparent magnesium aluminate (MgAl2O4) ceramics to determine their mechanical properties. These tests were carried out on samples at different applied loads ranging from 300 to 9,000 μN. The elastic recovery for nanostructured transparent MgAl2O4 ceramics at different applied loads was derived from the force-depth data. The results revea...

Optically transparent ceramics by spark plasma sintering of oxide nanoparticles

Hydrogen induced optically-active defects in silicon photonic nanocavities.

We demonstrate intense room temperature photoluminescence (PL) from optically active hydrogen- related defects incorporated into crystalline silicon. Hydrogen was incorporated into the device layer of a silicon on insulator (SOI) wafer by two methods: hydrogen plasma treatment and ion implantation. The room temperature PL spectra show two broad PL bands centered at 1300 and 1500 nm wavelengths:...

Alanine-EPR dosimetry in 10 MeV electron beam to optimize process parameters for food irradiation

Absorbed dose in food product is determined and controlled by several parameters of the LINAC irradiation facility as well as those of the product. Standardization of the parameters characterizing the facility parameters, process load and the irradiation conditions collectively termed as ‘process parameters’ are important for successful dose delivery to the food products. In the present study, ...

Studies on electron beam induced DNA damage and repair kinetics in lymphocytes by alkaline comet assay

Background: Exposure to ionizing radiation is known to induce oxidative stress followed by damage to critical biomolecules like lipids, proteins and DNA through radiolysis of cellular water. Since radiation has been widely used as an important tool in therapy of cancer, the detailed investigation regarding the DNA damage and repair kinetics would help to predict the radiation sensitivity of cel...