Thus, the wire remains intact even when bent. Only when the copper grains are smaller than one thousandth of a millimeter, the properties change and therefore the metal's behavior:
PDMS Pillars with Nanoindenter
Important parameters are the tip's depth of indentation, the energy needed, or the way the pillars are crushed during the scanning. The whole process is done in a dimension of only a few millionths of millimeters. "For the measurements, we use a special nanoindenter developed by Hysitron, whose measuring possibilities were tailored especially to our needs", the materials expert explains. Usually, hard probes, i.e. metals, ceramic or even nacre, can be examined with such equipment. But it is no problem to also examine smooth probes, such as plastics, with the specially developed equipment.
INM – Leibniz Institute for New Materials, situated in Saarbrücken/Germany, is an internationally leading centre for materials research. It is a scientific partner to national and international institutes and a provider of research and development for companies throughout the world. INM is an institute of the Scientific Association Gottfried Wilhelm Leibniz and employs around 190 collaborators. Its main research fields are Chemical Nanotechnology, Interface Materials, and Materials in Biology.
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