Silicon Cantilever for Micro/Nanoforce and Stiffness Calibration

Area of Science:

• Materials Science and Engineering
• Microtechnology
• Metrology

Background:

• Cantilevers are passive microelectronic structures fabricated from monocrystalline silicon.
• Traditional methods for stylus force inspection lack precision.
• The need for accurate force measurement in microtechnology applications is growing.

Purpose of the Study:

• To investigate the application of silicon microcantilevers as material measures for stylus force inspection.
• To develop and validate a simple method for measuring stylus forces using cantilever deflection.
• To assess the accuracy and applicability of silicon cantilevers in industrial metrology.

Main Methods:

• Fabrication of monocrystalline silicon cantilevers using microtechnology processes.
• Measurement of force-deflection characteristics and comparison with classical elastic bending theory.
• Determination of cantilever stiffness through various methods, including tactile measurements.
• Analysis of tactile measured profiles along the silicon cantilever.

Main Results:

• Established force-deflection relationships for silicon cantilevers.
• Validated methods for determining cantilever stiffness.
• Estimated the accuracy of the proposed stylus force measurement technique.
• Demonstrated the potential for extracting information from tactile profiles.

Conclusions:

• Silicon microcantilevers are suitable for industrial metrology applications, specifically for stylus force inspection.
• The proposed deflection-based method provides an accurate approach to stylus force measurement.
• Further improvements can enhance the performance of silicon cantilevers for metrological applications.