Quantum antidots are subnanometer scale vacancy clusters, the localized electronic structure of which can significantly alter the properties of a nanomaterial. We use positron spectroscopy to study vacancy clusters generated during the formation of gold nanoparticles via ion implantation in an MgO matrix. We observed that quantum antidots are associated with the nanoparticle surfaces after anne...

Introduction: Our previous study has showed that chronic administration of magnesium oxide nanoparticles (MgO NP) can reduce anxiety in adult male rat. In this study the effects of MgO NP on anxiety induced by morphine withdrawal were investigated in adult male mice. Methods: Adult male NMRI mice (weighing 27 ± 3 g) divided into groups: control, receiving intraperitoneal (i.p.) injection...

The current work focuses on the preparation of magnesium oxide nanoparticles using aqueous chloride salts and sodium hydroxide powder by a simple chemical precipitation method at an annealing temperature 700 °C for 6 hours. structural morphological properties were investigated X-ray diffraction (XRD). Polycrystalline cube Scherer equation showed crystalline size 17.23 nm. EDS analyzes high puri...

Abstract Nanofluid flooding has become one of the advantageous enhanced oil recovery (EOR) techniques due to transcendental property nanoparticle. Nanoparticles with various morphology presents different effects and mechanisms EOR. To provide some guidance on selection nanomaterials for flooding, 4 kinds nanomaterials, including silicon dioxide (SiO 2 ), magnesium oxide (MgO), graphene (GO) mol...

Metal oxide (MO) nanoparticles have been studied as nano-antibiotics due to their antimicrobial activities even in antibiotic-resistant microorganisms. We hypothesized that a hybrid system of dual UV irradiation and MO nanoparticles would have enhanced antimicrobial activities compared with UV or MO nanoparticles alone. In this study, nanoparticles of ZnO, ZnTiO3, MgO, and CuO were selected as ...

Well-separated and size-controlled FePt nanoparticles are promising for magnetic data storages with ultra-high areal densities [1]. Chemically ordered L1o-FePt shows high magneto-crystalline anisotropy and an enhanced coercivity as compared to disordered FePt state. A measurement of coercivity (Hc) of FePt, showing strongly size dependence (shown in another paper), indicates a lower anisotropy ...

Abstract In this study, the improvement in SAE 10W-40 engine oil tribological performance after addition of magnesium oxide (MgO) nanoadditive and two different phosphonium-based ionic liquids (ILs) was investigated. Besides, rheological behaviour MgO-based nanolubricant IL-based hybrid nanolubricants at temperature range from 293.15 to 363.15 K studied. The nanoparticle characterization perfor...