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Time-dependent irradiation of crack cells
Network of cracks formed on a chromium-copper-molybdenum trilayer metal film on a soft, flexible substrate, following a biaxial tensile test, observed under the microscope. The iridescent colors are linked to the nanometric irregularity of the oxide layer formed over time on the surface of the sample. The interfaces and mechanical contrasts between the layers of films of this type should make it possible to improve the mechanical and electrical durability of flexible electronic devices. However, understanding the mechanical mechanisms linked to the nature of the material remains a challenge. This image won the C’Nano 2023 Art & Science Image Audience Award in the “Gulliver’s Journey into the World of Nanos” category. Shuhel Altaf Husain: “The gradients of coloration of the fragments observed give the image of islands where all sorts of adventures are possible. Are these islets of Lilliputian dimensions? Or are they inhabited by invisible adventurers? The color palette shows that each island has its own shape and distance from the others.As with plate tectonics, global deformation changes the size and coloring of these fragments. The image is also reminiscent of Gustav Klimt’s work on the cycle of life, constantly reborn, and the physical properties of cyclically deformed fragments of nanometric thickness. It allows us to broaden our knowledge of natural phenomena. Man is a being endowed with a mind that by nature feels a need to know. The terror of the unknown and the feeling of insecurity can only be avoided through fundamental research. The observer is encouraged to question and pursue his quest for knowledge, for it reveals the beauty of nature”.