Patent ID: 7557588
Filing Date: 2009-07-07
Classification: G01N

Abstract:
1. An inspection method of detecting an electromagnetic wave in a frequency range between 30 GHz and 30 THz which is propagated through a transmission line to obtain information on an inspection object deposited on a conductive region located in a site including at least a part of a range to which an electric field distribution of the electromagnetic wave propagating through the transmission line extends, comprising: supplying the inspection object from an inspection object supply unit for holding and supplying the inspection object to an outside; applying a voltage between the conductive region and an inspection object holding portion of the inspection object supply unit to generate an electric field; guiding the supplied inspection object with an electrostatic force to deposit the object depositing selectively on the conductive region; and obtaining information on the inspection object by superimposing an alternating current component on the voltage to be applied to the inspection object holding portion of the inspection object supply unit to vary a rate of the deposition of the inspection object onto the conductive region, and carrying out a synchronous detection with this variation.