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Development of an Organic Lateral Resolution Test Device for Imaging Mass Spectrometry

Passarelli, Melissa, 1983 (author)
Gothenburg University,Göteborgs universitet,Institutionen för kemi och molekylärbiologi,Department of Chemistry and Molecular Biology,Chalmers tekniska högskola,Chalmers University of Technology,University of Gothenburg
Wang, Jun, 1976 (author)
Gothenburg University,Göteborgs universitet,Institutionen för kemi och molekylärbiologi,Department of Chemistry and Molecular Biology,University of Gothenburg,Chalmers tekniska högskola,Chalmers University of Technology
Mohammadi, Amir Saeid, 1984 (author)
Chalmers tekniska högskola,Chalmers University of Technology
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Trouillon, Raphaël, 1982 (author)
Gothenburg University,Göteborgs universitet,Institutionen för kemi och molekylärbiologi,Department of Chemistry and Molecular Biology,University of Gothenburg
Gilmore, I. (author)
National Physical Laboratory (NPL)
Ewing, Andrew G, 1957 (author)
Gothenburg University,Göteborgs universitet,Institutionen för kemi och molekylärbiologi,Department of Chemistry and Molecular Biology,University of Gothenburg,Chalmers tekniska högskola,Chalmers University of Technology
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 (creator_code:org_t)
2014-09-15
2014
English.
In: Analytical Chemistry. - : American Chemical Society (ACS). - 0003-2700 .- 1520-6882. ; 86:19, s. 9473-9480
  • Journal article (peer-reviewed)
Abstract Subject headings
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  • An organic lateral resolution test device has been developed to measure the performance of imaging mass spectrometry (IMS) systems. The device contains periodic gratings of polyethylene glycol (PEG) and lipid bars covering a wide range of spatial frequencies. Microfabrication technologies were employed to produce well-defined chemical interfaces, which allow lateral resolution to be assessed using the edge-spread function (ESF). In addition, the design of the device allows for the direct measurement of the modulation transfer function (MTF) to assess image quality. Scanning electron microscopy (SEM) and time-of-flight secondary ion mass spectrometry (TOF-SIMS) were used to characterize the device. TOF-SIMS imaging was used to measure the chemical displacement of biomolecules in matrix-assisted laser desorption/ionization (MALDI) matrix crystals. In a proof-of-concept experiment, the platform was also used to evaluate MALDI matrix application methods, specifically aerosol spray and sublimation methods.

Subject headings

NATURVETENSKAP  -- Kemi -- Analytisk kemi (hsv//swe)
NATURAL SCIENCES  -- Chemical Sciences -- Analytical Chemistry (hsv//eng)

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