Abstract
Engineered microplastics are vital mimics of natural microplastics for application in many research areas aimed at solving environmental pollution. Here, we demonstrate the fabrication of engineered microplastics using 1 MeV protons with a full penetration depth to effectively detach engineered microplastics from a substrate. The microplastic patterns in this work were made in an epoxy-based polymer (SU-8) spin-coated on a silicon (Si) substrate by employing a proton beam writing technique at the Shibaura Institute of Technology. It was found that the SU-8 microplastic was efficiently detached from the Si substrate. This fabrication approach also enables the SU-8 microplastic to be stored on the Si substrate before use.
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