Spectroscopy and Diffraction

Molecular level solid-, liquid- and gas-interactions can be investigated through structural, chemical and compositional analysis with remarkable atomic scale spatial and high-energy resolution spectrometers and diffractometers for novel fundamental research. See a complete list of Spectroscopy and Diffraction instruments.

Resources and Techniques

  • Electron spectroscopy
  • Electron backscatter diffraction
  • Atom probe tomography
  • Ion/molecular beam spectroscopy
  • 57Fe-Mössbauer spectroscopy
  • Optical spectroscopy
  • X-ray tomography and diffractometers

Additional Information:

Description

Capability Details

  • Electron spectrometers with high spatial and energy resolution in-situ and ex-situ x-ray photoelectron spectroscopy
  • Secondary ion mass spectrometers with single and cluster ion sources, and time-of-flight and magnetic mass analyzers
  • Electron microscopes with energy dispersive X-ray spectroscopy, electron energy loss spectroscopy and electron backscatter diffraction
  • Local Electrode Atom Probe tomography system with 355 nm UV laser and reflectron flight path for high mass resolution
  • Fourier transform infrared spectrometers with vacuum bench and variable temperature capability
  • Confocal-Raman, cryogenic time-resolved fluorescence, circular dichroism, stopped-flow absorbance, laser-induced breakdown and sum frequency generation optical tools
  • Variable temperature Mössbauer spectroscopy systems for bulk (transmission mode) and surface (emission) measures
  • X-ray diffraction instruments with sealed tube or rotating anode for analysis of powder, thin film and single crystal samples; point, CCD and image plate detection. X-ray computed tomography with 225- and 320-kV fixed, and 225-kV rotating target options using a 2000x2000 pixel area detector and state-of-the-art processing and visualization software

Electron spectroscopy – Achieving nanoscale spatial resolution, users can study elemental composition, structural properties, and chemical states of materials with applications to thin films, nanomaterials, catalysis, biological and environmental sciences, corrosion, and atmospheric aerosols.

Electron backscatter diffraction – Samples of microstructures in environmental and material science can be examined with three dimensional reconstruction and characterization using focused ion beam-electron backscatter diffraction analysis.

Atom probe tomography – Atom Probe Tomography (APT) provides comprehensive and accurate three dimensional chemical imaging for characterization of both metallic materials and low electrical conductivity materials, such as semiconductors, oxides, carbides, nitrides and composites.

Ion/molecular beam spectroscopy – Secondary ions and scattered ions from various materials are analyzed in straight, magnetic or time-of-flight mass spectrometers to investigate elemental, isotopic and molecular compositions through surface spectra, one dimensional depth profiling and two dimensional and three dimensional chemical imaging.

57Fe-Mössbauer spectroscopy – Using 57Fe (a versatile, highly sensitive, and stable isotope with natural abundance of 2.2%), users can obtain information about the valence state, coordination number and magnetic ordering temperatures for a wide range of Fe-containing samples; (e.g., Fe-organic matter complexes, sediments, catalysts, glass materials).

Optical spectroscopy – Fluorimetry, stopped-flow absorbance, FTIR and confocal-Raman tools enable analysis for biology, radiochemistry, and catalysis. Sum frequency generation-vibrational spectroscopy and second harmonic generation are available to study liquid, liquid and solid, and liquid interfaces.

X-ray tomography and diffractometers – X-ray computed tomography delivers images of microstructures (components, pore structure and connectivity) in biological and geological samples at tens of microns spatial resolution. General purpose and specialized x-ray diffraction systems, including single-crystal, microbeam and variable temperature powder capabilities, empower phase analysis of polycrystalline, epitaxial thin films, protein structure determination, and studies of problematic small inorganic molecules.

Instruments

The atmospheric pressure reactor system is designed for testing the efficiency of various catalysts for the treatment of gas-phase pollutants. EMSL...
Custodian(s): Russell Tonkyn
The LEAP® 4000 XHR local electrode atom probe tomography instrument enabled the first-ever comprehensive and accurate 3-D chemical imaging studies...
Custodian(s): Arun Devaraj, Daniel Perea
This unique instrument is capable of measuring gas/solid reaction rates under realistic, high-pressure (∼1 atm) conditions using model, low-surface...
Custodian(s): Janos Szanyi
EMSL's non-thermal interfacial reactions instrumentation is available for use in research directed toward understanding non-thermal interfacial...
Custodian(s): Greg Kimmel
The SMSAS is a multi-technique surface analysis instrument based on elemental mapping using either scanning small spot X-rays or the electronics in...
Custodian(s): Shuttha Shutthanandan

Publications

The ability to tune the atomic-scale structural and chemical ordering in nanoalloy catalysts is essential for achieving the ultimate goal of high...
Surface functionalized magnetic nanoparticles (MNPs) are appealing candidates for analytical separation of heavy metal ions from waste water and...
The interactions between proteins and surfaces are critical to a number of important processes including biomineralization, the biocompatibility of...
A series of cobalt nickel mixed oxide catalysts with the varying ratios of Co to Ni, prepared by co-precipitation method, were applied to methane...
Thisstudyemployed16SrRNAgeneampliconpyrosequencingtoexaminethehypothesisthatchemolithotrophicFe(II)-oxidizing bacteria(FeOB)would preferentially...

Science Highlights

Posted: May 11, 2016
The Science Organic acids are an important component of atmospheric aerosols found in abundance in a variety of urban, rural and marine environments...
Posted: April 05, 2016
For the first time, a team of researchers using EMSL capabilities have been able to see the nanostructure of a titanium alloy and then manipulate it...
Posted: March 22, 2016
The Science A recent study examined in unprecedented detail the structural and thermodynamic properties of uranium (U(v)) containing compounds...
Posted: March 10, 2016
An international research team created a composite of a metal-organic framework, or MOF, and a helper molecule that efficiently separates oxygen...
Posted: February 23, 2016
The Science Hydrogen production through steam reforming biomass-derived compounds is an economically feasible and environmentally benign way to...

Instruments

The aim of this proposal is to build upon our initial success in the exploration of the 3-D location and distribution of the Al and Si atoms in...
A critical challenge for high temperature electrochemistry is metallic catalyst stability. Rapid migration of nickel features is a key limitation to...
This program is focused on obtaining a microscopic understanding of solution chemistry and solvation of negatively charged ions using cluster models...
Production of biofuels from lignocellulosic biomass, a renewable resource, can play a significant role in achieving goals of long term sustainability...
Since the sodium reserves are easily accessible, we decided to investigate sodium ion batteries (NaIBs), as new energy storage systems, for large-...

Molecular level solid-, liquid- and gas-interactions can be investigated through structural, chemical and compositional analysis with remarkable atomic scale spatial and high-energy resolution spectrometers and diffractometers for novel fundamental research. See a complete list of Spectroscopy and Diffraction instruments.

Resources and Techniques

  • Electron spectroscopy
  • Electron backscatter diffraction
  • Atom probe tomography
  • Ion/molecular beam spectroscopy
  • 57Fe-Mössbauer spectroscopy
  • Optical spectroscopy
  • X-ray tomography and diffractometers

Additional Information:

Attachments: 

Pages

Leads

(509) 371-7816

Dr. Bowden joined EMSL in 2009 and currently manages EMSL's optical spectroscopy and diffraction, subsurface flow and transport, and microfabrication and deposition capabilities. He is responsible for the X-ray diffraction facility and assists...