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
Output queued switch with a parallel shared memory, and method of operating same
Printed circuit board unit having routing unit mounted thereon and computer device having the same
Mobile terminal device capable of more effectively utilizing operation portions, conductive portion, operation detecting unit, power supply unit, and signal processing unit
Self cleaning rake
Method for counting and segmenting viral particles in an image
Neurostimulation system
Virtual billboards
  Randomly Featured Patents
Sensor device for a motor vehicle system
System for retrospective identification and method of marking articles for retrospective identification
Belt reel for a belt retractor of a vehicle occupant restraint system
Process of afterburning and purifying process exhaust gases
Three-dimensional medical imaging apparatus
Power line testing device with signal generator and signal detector
Non-pressure head with integrated piston stop and vent/drain
Ethylene copolymers and their uses
Gain variable circuit and automatic gain control amplifier using the same
Tape cassette