Basic Information
Abstract Number: 2520-5    
Author Name: Brett J Hansen Affiliation: Brigham Young University
Session Title: Mass Analyzers and Microfabrication Techniques
Event Type: Symposia
Event Title: Quadruple Ion Traps Realized by Planar Microfabricated Electrodes for Compensation of High Order Multipole Effects
Presider(s): Austin, Daniel E Start Time: 10:25 AM ( Slot # 6 )
Date: Thursday, March 4th, 2010 Location: 206C
Keywords: Electrode Surfaces, Ion Trap, Microelectrode, Quadrupole MS

Austin, Daniel EBrigham Young University
Hawkins, Aaron RBrigham Young University
Lee, Milton LBrigham Young University
Peng, YingBrigham Young University
Quist, Hannah EBrigham Young University
Wang, MiaoBrigham Young University
Zhang, ZhipingBrigham Young University

Abstract Content
We present a general method of creating quadrupole ion traps using planar electrode surfaces and microfabrication techniques. This approach has been used to obtain mass spectra in various configurations of ion traps, including a Paul trap, toroidal trap, and linear ion trap. The electrode surfaces consist of patterned, conducting lines or rings deposited onto an insulating (ceramic) substrate. Two such plates facing each other, spaced an appropriate distance apart, constitute the trapping/analyzing region. Different amplitudes of an RF signal are placed on the lines or rings to duplicate the quadrupolar fields created by machined metal electrode surfaces in conventional ion traps. Adjustment of the RF amplitudes allows a flexible field optimization not available in other systems. This flexibility has allowed experimental investigation of the effect of high order multipoles in ion trapping and mass analysis. This approach represents also a solution to the problem of creating a 3-dimensional device using an inherently 2-dimensional fabrication technique.