US Patent No. 7,851,749. Method for obtaining information and device therefore. Inventors: Manabu Komatsu, Hiroyuki Hashimoto, Yohei Murayama, Kazuhiro Ban. Assignee: Canon.
Describes a method for obtaining information on the mass of an object using time-of-flight mass spectrometry that includes placing colloidal metal particles to promote ionization of the object inside the object and irradiating the object with a primary beam.