Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
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
Semiconductor devices having through electrodes and methods of fabricating the same
Rules-based approach to transferring and/or viewing medical images
Control apparatus and control method
Nucleic acids for cloning and expressing multiprotein complexes
Matching a usage history to a new cloud
Method for the treatment, alleviation of symptoms of, relieving, improving and preventing a cognitive disease, disorder or condition
Dual protocol input device
  Randomly Featured Patents
Integrated circuit package system with multi-surface die attach pad
Hold-down spring clamps on fuel assembly top nozzle
Method for singulating a released microelectromechanical system wafer
Photographing device
Conductive resin composition and process for producing the same
Open blade rear sight for pistol, rifle or shotgun
Electric power steering device equipped with anti-theft function and method for manufacturing same
Snap-in chassis for tape drive
Security system for implantable medical devices
Method of and apparatus for recording data on write-once disc, method of and apparatus for reproducing data from write-once disc, and write-once disc therefor