A companion to Volume V: Applications of Ion Trapping Devices, this volume explores recent advances in this expanding field. It covers new methods for trapping ions, such as the Orbitrap(TM), the digital ion trap, the rectilinear ion trap, and the toroidal ion trap; the development and application of the quadrupole ion trap and the quadrupole linear ion trap; and the introduction of high-field asymmetric waveform ion mobility spectrometry. The book explains all terms, acronyms, procedures, and equations in a style readily accessible at the graduate level and presents a common writing style that enables readers to appreciate the commonalities of topics.