Abstract
We present an experimental investigation on a novel approach to produce micro-sizedprotrusive features atop a thermo-responsive shape memory polymer (SMP). This approachincludes three steps, namely, indenting atop an SMP sample (using a Berkovich indenter inthis study), polishing and then heating it for full shape recovery. Apart from ordinarysamples, some SMP samples are pre-stretched in the in-plane direction or pre-compressedin the out-of-plane direction.The relationships between the height/shape of protrusion and the depth of indent areobtained for all indents in samples with/without pre-straining. Intrinsic relationshipsamong the indentation depth, polishing depth and height/shape of protrusion are furtherrevealed quantitatively in a dimensionless manner. The influence of pre-straining isdiscussed.
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