Atmospheric-Pressure Mass Spectrometry by Single-Mode Nanoelectromechanical Systems.

ABSTRACT: Weighing particles above the megadalton mass range has been a persistent challenge in commercial mass spectrometry. Recently, nanoelectromechanical systems-based mass spectrometry (NEMS-MS) has shown remarkable performance in this mass range, especially with the advance of performing mass spectrometry under entirely atmospheric conditions. This advance reduces the overall complexity and cost while increasing the limit of detection. However, this technique required the tracking of two mechanical modes and the accurate knowledge of mode shapes that may deviate from their ideal values, especially due to air damping. Here, we used a NEMS architecture with a central platform, which enables the calculation of mass by single-mode measurements. Experiments were conducted using polystyrene and gold

SUBMITTER: Kaynak BE 

PROVIDER: S-EPMC10540252 | biostudies-literature | 2023 Sep

REPOSITORIES: biostudies-literature