Chemical Analysis Programs & Projects | |
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Rapid Isotopic Screening
Last Updated Date: 10/02/2012 We have exploited the built-in functionality of a secondary ion mass spectrometer to provide the capability to screen the enrichment levels of a … more
Trace Narcotics Detection
Last Updated Date: 10/02/2012 A large suite of illicit drug samples were analyzed using IMS to evaluate the selectivity and sensitivity of the technique. The sample suite … more
Molecular Orbital Structure of Energetic Nitrogen Compounds from X-Ray Emission Spectroscopy
Last Updated Date: 10/02/2012 When chemical compounds of low-Z elements are excited by x-rays, the ionized core states are filled from the valence band. The molecular orbital … more
Milli X-ray Fluorescence X-ray Spectrum Imaging Technique Development
Last Updated Date: 10/02/2012 Significant improvements were made in the area of technique development for Eagle III mXRF since its initial installation in 2007. The diverse … more
Mitigation of Systematic Errors in EFTEM Spectral Imaging via Median Filtering
Last Updated Date: 10/02/2012 A method has been developed for the removal from CCD images of point blemishes (PBs) ubiquitous in the acquisition of energy-filtered transmission … more
Evaluation of the Extent of Electron Scattering in a Low Vacuum Scanning Electron Microscope
Last Updated Date: 10/02/2012 Low vacuum scanning electron microscopes utilize gas molecules in the specimen chamber to neutralize the specimen charging from the impinging … more
DTSA-II Reinvention of a Classic
Last Updated Date: 10/02/2012 The original NBS/NIH DTSA (Desktop Spectrum Analyzer) software was widely used in the x-ray microanalysis research community. The combination of … more
Depth Profiling of Drug Eluting Stent Coatings with Cluster SIMS
Last Updated Date: 10/02/2012 There is much excitement in the cardiology community about drug eluting stents (DES), a promising new treatment for coronary artery disease. A … more
Atomic Scale Imaging of Nanoscale Structures with Elemental Sensitivity in the NIST Titan 80-300
Last Updated Date: 10/02/2012 The characterization of CdSe/ZnS quantum dot structures has been carried out with compositionally sensitive imaging techniques utilizing the … more
Coupling Nanowire Chemisresistors with MEMS Microhotplate Gas Sensing Platforms
Last Updated Date: 10/02/2012 Recent advances in nanotechnology have yielded materials and structures that offer great potential for improving the sensitivity, selectivity, … more
Analysis of Copper Incorporation Into Zinc Oxide Nanowires
Last Updated Date: 10/02/2012 ZnO nanowires (NWs) are grown on bulk copper by chemical vapor deposition. Photoluminescence (PL) microscopy revealed band gap emission at 380 nm … more
Analysis of 3D Elemental Mapping Artifacts in Biological Specimens using Monte Carlo Simulation
Last Updated Date: 10/02/2012 We performed Monte Carlo simulation to demonstrate the feasibility of using the focused ion beam based X-ray microanalysis technique (FIB-EDS) for … more
3D Molecular Bioimaging Mass Spectrometry
Last Updated Date: 10/02/2012 In recent years, the use of cluster primary ion projectiles for organic secondary ion mass spectrometry (SIMS) has generated considerable interest … more
A Comparison of WD-EPMA Heterogeneity Testing Procedures
Last Updated Date: 10/02/2012 The heterogeneity of the four elements in a TiAl(NbW) SRM 2061 alloy were determined from five specimens with WD-EPMA (wavelength dispersive … more
3D Elemental Mapping of Cells using Electron and Ion Beams
Last Updated Date: 10/02/2012 Although it is the most commonly used technique for the chemical analysis of cells, mass spectrometry of cell lysate can only provide bulk … more |
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