Nanoindentation and Contact Stiffness Measurement Using Force Modulation with a Capacitive Load-Displacement Transducer

Abstract

We have implemented a force modulation technique for nanoindentation using a three-plate capacitive load-displacement transducer. The stiffness sensitivity of the instrument is ~0.1 N/m. We show that the sensitivity of this instrument is sufficient to detect long-range surface forces and to locate the surface of a specimen. The low spring mass (236 mg), spring constant (116 N/m) and damping coefficient (0.008 Ns/m) of the transducer allows measurement of the damping losses for nanoscale contacts. We present the experimental technique, important specimen mounting information, and system calibration for nanomechanical property measurement.

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Document Details

Document Type
Technical Report
Publication Date
May 01, 1999
Accession Number
ADA465093

Entities

People

  • K. J. Wahl
  • R. J. Colton
  • S. A. Syed Asif

Organizations

  • United States Naval Research Laboratory

Tags

Communities of Interest

  • Advanced Electronics
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Air Gaps
  • Calibration
  • Data Acquisition
  • Displacement
  • Dynamic Response
  • Electronic Components
  • Frequency
  • Materials
  • Materials Science
  • Measurement
  • Mechanical Properties
  • Military Research
  • Modulation
  • Phase Shift
  • Plastic Properties
  • Stiffness
  • Transducers

Fields of Study

  • Physics

Readers

  • Materials Science (Mechanical Engineering).
  • Materials Science and Engineering.
  • Nanoscale Plasmonic Nanotechnology