Patent ID: 11892471
Assignee: SHENYANG INSTITUTE OF AUTOMATION, CHINESE ACADEMY OF SCIENCES
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 7:
8. A method for simultaneous independent motion measurement of multiple probes in an atomic force microscope, comprising: irradiating a laser beam having more than one wavelengths on at least two cantilever beams through a same light path, each cantilever beam having a grating structure disposed on a surface of the cantilever beam;
forming more than one reflected light beams of different reflection angles by reflecting from grating structures of the at least two cantilever beams;
filtering each of the more than one reflected light beams using a corresponding light filter to allow reflected light beams from one of the at least two cantilever beams to enter a corresponding light detector, thereby detecting motions of each of the at least two cantilever beams.