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Schematic illustration of the process for fabricating buckled single crystal Si ribbons (yellow) on a PDMS (gray) substrate; (a) bond Si elements to prestretched PDMS; (b) local buckling; and (c) global buckling due to release of prestretch.
Critical strains of one-dimensional local and global bucklings vs substrate thickness for the Si/PDMS system.
Critical condition of one-dimensional local and global bucklings for the Si/PDMS system.
(a) Critical condition and (b) optical images of two-dimensional local and global bucklings for the Si/PDMS system.
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