Adhesion of Self-Complementary, Sinusoidal Surfaces Fabricated Using Two-Photon Polymerization
Madelyn P. Jeske, Hannan Wang, Hesam Askari, David R. Harding, Mitchell Anthamatten
TL;DR
Researchers developed a method to control adhesion between 3D-printed surfaces using temperature and mechanical compression, achieving high adhesive strength for microscale applications.
Contribution
A novel approach to switchable adhesion using self-complementary metasurfaces fabricated with two-photon polymerization.
Findings
Adhesive strength between printed surfaces exceeded 3 MPa when tested with pull-off stress.
Heating surfaces above 60°C reduced adhesion, while compression and cooling increased it.
Tailoring complementary surfaces could enable microscale disassembly for component recovery.
Abstract
Microscale, pick-and-place assembly is a non-lithographic assembly method poised to impact diverse fields including flexible electronics, microfluidics and robotics. However, a major technological challenge is the need to deterministically control adhesion between parts. Here, switchable adhesion involving 3D-printed, self-complementary surfaces is demonstrated. Mechanical properties of metasurfaces pressed against flat, rigid substrates are modeled using finite element methods. A series of flat slabs and metastructured slabs with 2D sinusoidal surfaces are printed using two-photon polymerization (2PP) of a shape-memory resin. The surface frequency of featured slabs was varied between 3.3̅ mm–1 and 26.6̅ mm–1 with similar amplitudes. Adhesion between printed metasurfaces and glass and between printed, self-complementary metasurfaces is studied above and below the cured resin’s glass…
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Taxonomy
TopicsAdhesion, Friction, and Surface Interactions · Advanced Sensor and Energy Harvesting Materials · Advanced Materials and Mechanics