ion mobility
Ion mobility review
Lanucara F, Holman SW, Gray CJ, Eyers CE. (2014) The power of ion mobility-mass spectrometry for structural characterization and the study of conformational dynamics. Nat Chem. 2014 Mar 21;6(4):281-94. doi: 10.1038/nchem.1889. [PDF] [PUBMED] [Abstract...]