Invention Grant
- Patent Title: Micromachined comb drive for quantitative nanoindentation
- Patent Title (中): 微加工梳状驱动器用于定量纳米压痕
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Application No.: US12497834Application Date: 2009-07-06
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Publication No.: US08161803B2Publication Date: 2012-04-24
- Inventor: Yunje Oh , Syed Amanula Syed Asif , Oden Warren
- Applicant: Yunje Oh , Syed Amanula Syed Asif , Oden Warren
- Applicant Address: US MN Minneapolis
- Assignee: Hysitron Incorporated
- Current Assignee: Hysitron Incorporated
- Current Assignee Address: US MN Minneapolis
- Agency: Dicke, Billig & Czaja PLLC
- Main IPC: B82Y3/00
- IPC: B82Y3/00 ; G01N3/42 ; G01N3/00

Abstract:
A microelectromechanical (MEMS) nanoindenter transducer including a body, a probe moveable relative to the body, an indenter tip coupled to an end of the moveable probe, the indenter tip moveable together with the probe, and a micromachined comb drive. The micromachined comb drive includes an electrostatic actuator capacitor comprising a plurality of comb capacitors configured to drive the probe, together with the indenter tip, along a displacement axis, including in an indentation direction, upon application of a bias voltage to the actuation capacitor. The micromachined comb drive further includes a plurality of sensing capacitors forming a differential capacitive displacement sensor, each sensing capacitor comprising a plurality of comb capacitors and each configured to provide capacitance levels which, together, are representative of a position of the probe, wherein each of the comb capacitors of the actuator capacitor and the sensing capacitors includes a fixed electrode comb coupled to the body and a moveable electrode comb coupled to the probe.
Public/Granted literature
- US20100132441A1 MICROMACHINED COMB DRIVE FOR QUANTITATIVE NANOINDENTATION Public/Granted day:2010-06-03
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