Conventional Nanoindentation in Self-Assembled Monolayers Deposited on Gold and Silver Substrates

<table>Schematics of the angular degrees of freedom of alkanethiol SAMs. The brown areas represent S atoms of the molecules on the surface. Angle <svg height="10.7375" id="M14" style="vertical-align:-0.13794pt" version="1.1" viewbox="0 0 8.3125 10.7375" width="8.3125" xmlns="http://www.w3.org/2000/svg">
<g transform="matrix(1.25,0,0,-1.25,0,10.7375)">
<g transform="translate(72,-63.41)">
<text transform="matrix(1,0,0,-1,-71.95,63.6)">
<tspan style="font-size: 12.50px; " x="0" y="0">𝜃</tspan>
</text>
</g>
</g>
</svg> refers to the tilt of molecular axis with respect to substrate surface normal and <svg height="10.175" id="M15" style="vertical-align:-2.53308pt" version="1.1" viewbox="0 0 10.825 10.175" width="10.825" xmlns="http://www.w3.org/2000/svg">
<g transform="matrix(1.25,0,0,-1.25,0,10.175)">
<g transform="translate(72,-63.86)">
<text transform="matrix(1,0,0,-1,-71.95,66.44)">
<tspan style="font-size: 12.50px; " x="0" y="0">𝜒</tspan>
</text>
</g>
</g>
</svg> defines the tilt direction, that is, it is derived from projection of molecule in the substrate plane.</table>

Journal of Nanomaterials

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Figure 2

Figure 2: Conventional Nanoindentation in Self-Assembled Monolayers Deposited on Gold and Silver Substrates 