Patent ID: 6305226
Filing Date: 2001-10-23
Classification: G01N,Y10S

Abstract:
An apparatus comprising:a cantilever arm having a tip disposed at an end thereof, the tip being positioned to engage a surface of a specimen;a detecting system positioned to detect motion of the cantilever arm and produce detector signals based on the motion;a frequency generator producing a radio frequency signal to excite the specimen, the radio frequency signal having a first frequency that is amplitude modulated at a second frequency, the second frequency being less than the first frequency;a circuit operatively connected between the detecting system and the frequency generator to synchronize the detector signals with the second frequency;a first processing element operatively connected to the detecting system to convert the detector signals to first mapping data, the first mapping data relating to physical characteristics of the specimen; and,a second processing element operatively connected to the detecting system to convert the detector signals to second mapping data, the second mapping data relating to response characteristics of the specimen excited by the first frequency.