Ballistic nanoindentation of polymers
- 1 September 2008
- journal article
- research article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 93 (9), 093116
- https://doi.org/10.1063/1.2977867
Abstract
Indentation of a sharp (20 nm) cantilevered silicon tip into a polymer (SU8) surface is analyzed experimentally and through finite-element simulations. A rate effect on the microsecond scale that eases indentation is found, in contrast to the commonly observed hardening at high strain rates. The observed rate effect is discussed in terms of adiabatic heating and inertial force overshoot. The estimated magnitude of adiabatic heating is marginal, but the force overshoot itself is large enough to explain the data. The data imply that topographic patterning of a polymer at megahertz rates is feasible.Keywords
This publication has 15 references indexed in Scilit:
- Exploiting Chemical Switching in a Diels–Alder Polymer for Nanoscale Probe Lithography and Data StorageAdvanced Functional Materials, 2006
- A Simple Model for the Millipede Write TechniqueIEEE Transactions on Nanotechnology, 2005
- Demonstration of Thermomechanical Recording at 641 Gbit/in$^2$IEEE Transactions on Magnetics, 2004
- Mechanical strength and interfacial failure analysis of cantilevered SU-8 micropostsJournal of Micromechanics and Microengineering, 2003
- Influence of processing conditions on the thermal and mechanical properties of SU8 negative photoresist coatingsJournal of Micromechanics and Microengineering, 2002
- The "millipede" - nanotechnology entering data storageIEEE Transactions on Nanotechnology, 2002
- Effect of loading rate upon conventional ceramic microindentation hardnessJournal of Research of the National Institute of Standards and Technology, 2002
- Temperature changes in poly(methyl methacrylate) and high‐density polyethylene during rapid compressive deformationPolymer Engineering & Science, 1986
- Rate effects in hardnessJournal of Materials Science Letters, 1982
- Rubber heat engines, analyses and theoryPolymer Engineering & Science, 1977