A5056360751- High-pressure geophysics and materials
- Advanced Chemical Physics Studies
- Iron-based superconductors research
- Crystal Structures and Properties
- Analytical Chemistry and Sensors
- Electrochemical Analysis and Applications
- Analytical chemistry methods development
- Diamond and Carbon-based Materials Research
- Nanoparticles: synthesis and applications
- Electrochemical sensors and biosensors
- X-ray Diffraction in Crystallography
- Quantum, superfluid, helium dynamics
- Inorganic Chemistry and Materials
- Metal and Thin Film Mechanics
- Electronic and Structural Properties of Oxides
- Field-Flow Fractionation Techniques
- Inorganic and Organometallic Chemistry
- Water Quality Monitoring Technologies
- Machine Learning in Materials Science
- Chalcogenide Semiconductor Thin Films
- Minerals Flotation and Separation Techniques
- Physics of Superconductivity and Magnetism
- Nuclear Materials and Properties
- Extraction and Separation Processes
- 2D Materials and Applications
University of Nevada, Las Vegas
2016-2024
University of Nevada, Reno
2021
Las Vegas Institute
2021
Ministry of Research, Technology and Higher Education
2021
Environmental Protection Agency
2013
The recent surge in consumer products and applications using metallic nanoparticles has increased the possibility of human or ecosystem exposure due to unintentional release into environment. To protect health environment, there is an urgent need develop tools that can characterize quantify these materials at low concentrations complex matrices. In this study, magnetic coated with either dopamine glutathione were used a new, simple reliable method for separation/pre-concentration trace...
Controlling the formation and stoichiometric content of desired phases materials has become central interest for a variety fields. The possibility accessing metastable states by initiating reactions X-ray-triggered mechanisms over ultrashort time scales been enabled development X-ray free electron lasers (XFELs). Utilizing exceptionally high-brilliance pulses from EuXFEL, we report synthesis previously unobserved yttrium hydride under high pressure, along with nonstoichiometric changes in...
The presence of silver nanoparticles (AgNPs) in aquatic environments could potentially cause adverse impacts on ecosystems and human health. However, current understanding the environmental fate transport AgNPs is still limited because their properties complex samples cannot be accurately determined. In this study, feasibility using asymmetric flow field-flow fractionation (AF4) connected online with single particle inductively coupled plasma mass spectrometry (spICPMS) to detect quantify at...
Using combined experimental and computational approaches, we show that at 43 GPa 1300 K gallium phosphide adopts the super- Cmcm structure, here indicated with its Pearson notation oS24. First-principles enthalpy calculations demonstrate this structure is more thermodynamically stable above ∼20 than previously proposed polymorphs. In contrast to other polymorphs, oS24 phase shows a strong bonding differentiation distorted fivefold coordination geometries of both P atoms. The shortest bond...
We demonstrate the synthesis and phase stability of TcN, Tc<sub>2</sub>N, a substoichiometric TcN<sub>x</sub> from 0 to 50 GPa 2500 K in laser-heated diamond anvil cell.
Controlling the formation and stoichiometric content of desired phases materials has become a central interest for study variety fields, notably high temperature superconductivity under extreme pressures. The further possibility accessing metastable states by initiating reactions x-ray triggered mechanisms over ultra-short timescales is enabled with development free electron lasers (XFEL). Utilizing exceptionally brilliance pulses from EuXFEL, we report synthesis previously unobserved...
We present a portable CO2 laser heating system for in situ x-ray absorption spectroscopy (XAS) studies at 16-BM-D (High Pressure Collaborative Access Team, Advanced Photon Source, Argonne National Laboratory). Back scattering optical measurements are made possible by the implementation of Ge beamsplitter. Optical pyrometry is conducted near-infrared, and our temperature free chromatic aberration due to peak-scaling method [A. Kavner W. R. Panero, Phys. Earth Planet. Inter. 143–144, 527–539...
We report the synthesis and structure of second allotrope technetium, $\ensuremath{\beta}\text{\ensuremath{-}}\mathrm{Tc}$. Transformative pathways are accessed at extreme conditions using laser-heated diamond anvil cell confirmed with in situ synchrotron x-ray diffraction Raman spectroscopy. $\ensuremath{\beta}\text{\ensuremath{-}}\mathrm{Tc}$ is fully recoverable to ambient conditions, although counter our DFT calculations predicting a face-centered-cubic lattice, we observe tetragonal...
TcS2 undergoes a charge transfer insulator to metal transition above 28 GPa. Laser annealing reveals kinetically hindered high pressure arsenopyrite phase that is recoverable ambient. The new similar the Mn-dichalcogenides rather than expected Re-dichalcogenides and involves formation of S-S Tc-Tc bonds.
Using combined experimental and computational approaches we show that at 43 GPa 1300 K gallium phosphide adopts the super-Cmcm structure, here indicated with its Pearson notation oS24. First-principles enthalpy calculations demonstrate this oS24 structure is more thermodynamically stable above about 20 than other proposed polymorphs, such as cubic ZB SC16 or ubiquitous orthorhombic Cmcm phase (oS8). It found oS24-structured GaP exhibits short P-P bonds, according to our high-resolution...
Abstract ECV has a specification certificate of analysis (CoA) worth 9616 EU/mL where the limit acceptability recovery is in range 50 – 200 percent (4808 - 19232 EU/mL). The verification results concentration with kinetic turbidimetry method showed outside lower predetermined less than percent. This due to endotoxin adsorbed onto surface glass. To get that goes within limits then do time variation sonication (5; 10; 15; 20; 25; 30) minutes and variations dilution factor 10 −4 ; −5 . result...