Resources Contact Us Home
Apparatus and method for atmospheric pressure-3-dimensional ion trapping

Image Number 11 for United States Patent #6621077.

The present invention provides an apparatus for selectively transmitting ions and trapping the ions within a defined 3-dimensional space at atmospheric pressure. The invention is based on the ion focussing principles of high field asymmetric wave-form ion mobility spectrometry in which an analyzer region is defined by a space between first and second spaced apart electrodes, the analyzer region having a gas inlet and a gas outlet for providing a flow of gas through the analyzer region. Ions which are introduced into the analyzer region are carried by a gas flow towards a gas outlet. At least one of the electrodes has a curved surface terminus located near the gas outlet and the gas flow is adjusted so that ions are trapped in a defined 3-dimensional space located near the tip of the terminus. Trapping of ions in a defined 3-dimensional space allows a more concentrated flow of desired ions.

  Recently Added Patents
Method and apparatus for compensating QoS during handover by base station in wireless broadband access system
Monitoring of undesirable fluid ingress into subsea control modules
Process for preparing substituted aromatic carboxylic acids
Cancer vaccines containing epitopes of oncofetal antigen
DC/DC converter, power supply circuit, and semiconductor device
Braided boomerang pet toy
System for purifying air through germicidal irradiation and method of manufacture
  Randomly Featured Patents
Method of producing branched fatty substances
Needle member with off-set flash chamber and/or display member
Process and device for piecing on an open-end spinning device
System LSI having plural buses
Hammer support for rotary printing apparatus
Video mining using unsupervised clustering of video content
Volumetric valve with independent display and resetting
Positive photoresist composition
Gypsophila plant named `Magic Arbel`
Method of making a unit blower housing