Document Detail


Design, microfabrication, and analysis of micrometer-sized cylindrical ion trap arrays.
MedLine Citation:
PMID:  17503946     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
A description of the design and microfabrication of arrays of micrometer-scale cylindrical ion traps is offered. Electrical characterization and initial ion trapping experiments with a massively parallel array of 5 microm internal radius (r(0)) sized cylindrical ion traps (CITs) are also described. The ion trap, materials, and design are presented and shown to be critical in achieving minimal trapping potential while maintaining minimal power consumption. The ion traps, fabricated with metal electrodes, have inner radii of 1, 2, 5, and 10 microm and range from 5 to 24 microm in height. The electrical characteristics of packaged ion trap arrays were measured with a vector network analyzer. The testing focused on trapping toluene (C(7)H(8)), mass 91, 92, or 93 amu, in the 5 microm sized CITs. Ions were formed via electron impact ionization and were ejected by turning off the rf voltage applied to the ring electrode; a current signal was collected at this time. Optimum ionization and trapping conditions, such as a sufficient pseudopotential well and high ionization to ion loss rate ratio (as determined by simulation), proved to be difficult to establish due to the high device capacitance and the presence of exposed dielectric material in the trapping region. However, evidence was obtained suggesting the trapping of ions in 1%-15% of the traps in the array. These first tests on micrometer-scale CITs indicated the necessary materials and device design modifications for realizing ultrasmall and low power ion traps.
Authors:
D Cruz; J P Chang; M Fico; A J Guymon; D E Austin; M G Blain
Related Documents :
12375276 - Attachment of neutrals during tandem mass spectrometry of sulfonic acid dyes and interm...
16808456 - Hadamard transform ion mobility spectrometry.
11345246 - Interstellar matrices: the chemical composition and evolution of interstellar ices as o...
15878286 - The structure of gas-phase bradykinin fragment 1-5 (rppgf) ions: an ion mobility spectr...
2449366 - Bioenergetics of dihydrostreptomycin transport by escherichia coli.
25385786 - Volatile anesthetics inhibit sodium channels without altering bulk lipid bilayer proper...
Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't; Research Support, U.S. Gov't, Non-P.H.S.    
Journal Detail:
Title:  The Review of scientific instruments     Volume:  78     ISSN:  0034-6748     ISO Abbreviation:  Rev Sci Instrum     Publication Date:  2007 Jan 
Date Detail:
Created Date:  2007-05-16     Completed Date:  2007-06-22     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0405571     Medline TA:  Rev Sci Instrum     Country:  United States    
Other Details:
Languages:  eng     Pagination:  015107     Citation Subset:  IM    
Affiliation:
University of California, Los Angeles, Los Angeles, California 90095, USA.
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms
Descriptor/Qualifier:
Electrochemistry* / instrumentation
Ions / chemistry*
Microchemistry* / instrumentation
Microelectrodes
Toluene / chemistry*
Chemical
Reg. No./Substance:
0/Ions; 108-88-3/Toluene

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


Previous Document:  Manometer extension for high pressure measurement: nuclear quadrupole resonance study of Cu2O with a...
Next Document:  Novel liquid flow sensor based on differential pressure method.