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Updated: Feb 19, 2026

A Millimeter Scale Flexural Testing System for Measuring the Mechanical Properties of Marine Sponge Spicules
Published on: October 11, 2017
Mechano-responsive lateral buckling of miniaturized beams standing on flexible substrates
Hyemin Lee1, Jung Gun Bae, Won Bo Lee
1Department of Chemical and Biomolecular Engineering, Department of New Energy Engineering, Seoul National University of Science & Technology, Seoul, 01811, Korea. hsyoon@seoultech.ac.kr.
Abstract:
We fabricate an elastomeric beam standing on a flexible substrate using 3D printing and soft lithography and investigate lateral buckling generated in the part of the wall when this beam is under pure bending. We also observe changes in the morphology of wrinkling along the applied strain and geometry of the wall, and then analyze it with scaling concepts. Furthermore, the degree of lateral buckling is controlled through the tip design in the ratchet structure and it is verified with finite element simulation. Based on this, a millimeter scale device with a visual difference according to the curvature is manufactured.
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