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High Time Resolution Bradbury-Nielson Gates


Stanford Reference:

05-314


Abstract


Stanford researchers have patented a simple template-based method to fabricate Bradbury-Nielson Gates (BNGs) with short fabrication times that can easily be massed produced. This method uses wire spacings as small as 50 μm with minimal use of a microscope. The small wire spacing allows modulation rates at tens of megahertz. It also allows more deflection at a lower voltage and still have a large active area. Using this method, fours BNGs have been fabricated with wire spacings of 500, 200, 100, and 50 μm using 10 μm gold-coated tungsten wires. The performance of the four BNGs is characterized using an imaging detector and compared with theoretical predictions with good results.

Related Technologies from the Zare Lab available for license:
S97-208 “Time-of-flight mass spectrometer and ion analysis”
S00-227 “Bradbury-Nielson gates for modulating beams of charged particles and method of making same”
S02-134 "Cockeyed Implementation of Hadamard Transform Time-Of-Flight Mass Spectrometry"
S02-141 "Rapid and Accurate Modulation of Ion Beams"
S04-238 "Microfabricated beam modulation device"



Applications


  • Mass spectrometry:
    • ion selection in tandem time-of-flight mass spectrometer
    • Hadamard transform time-of-flight mass spectrometry
  • Ion mobility spectrometry

Advantages


  • Shorter fabrication time (less than one hour)
  • Economical
  • Can easily be mass-produced
  • Can achieve shorter wire spacing
  • Can achieve more deflection at a lower voltage
  • Can deflect more rapidly
  • Can achieve a large active area

Publications



Related Web Links



Innovators & Portfolio



Patent Status



Date Released

 9/25/2013
 

Licensing Contact


Evan Elder, Licensing Associate
650-725-9558 (Mobile)
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Related Keywords


instrumentation: spectroscopy   Mass Spectrometry   Bradbury-Nielson Gates   research tool: spectroscopy   Spectroscopy   spectrometer   MALDI-TOF MS   instrumentation: analytical   chemical analysis   Mass Spectrometer   biochemical analysis   Biological & Chemical Analyzers   chemical testing   Compact spectrometer   ion beam   ion source   spectral imaging   time of flight mass spectrometry   time-resolved spectroscopy   molecular assay   
 

   

  

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S05-314 High Time Resolution Bradbury-Nielson Gates