Single molecule detector for mass spectrometry with mass independent detection efficiency
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Updated: Oct 3, 2026

Single-Cell Mass Spectrometry Imaging Using Desorption Electrospray Ionization Coupled To Orbitrap Mass Spectrometers
Published on: June 12, 2026
D Twerenbold1, D Gerber, D Gritti
1Institut de Physique, Université Neuchâtel, Switzerland. twerenbold@genspec.ch
Abstract:
Experimental results from equimolar PEG and protein standards samples are presented from a MALDI-TOF mass spectrometer equipped with both ionizing detectors and the novel single molecule sensitive cryodetectors. The data are consistent with a model hypothesis suggesting that the observed decrease in signal strength in conventional ionizing detector MALDI-TOF mass spectrometers can be explained by the exponentially decreasing quantum efficiency of ionizing detectors. Cryodetectors, in contrast, have a mass independent detection efficiency of 100% on impact and provide additional information on the molecule state owing to the calorimetric nature of the detection mechanism.
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