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Updated: Sep 25, 2025
Improved Polydimethylsiloxane (PDMS) Double Casting via Silicone Oil Treatment for Densely Packed Microstructure Replication
Published on: July 18, 2025
Role of heat treatment in improving replication quality of PDMS double-casting
Shichen Li1, Son Van Nguyen1, Bong-Kee Lee1
1School of Mechanical Engineering, Chonnam National University, 77 Yongbong-ro, Buk-gu, Gwangju 61186, Republic of Korea. b.lee@chonnam.ac.kr.
Abstract:
An efficient and eco-friendly method utilizing the heat treatment of the PDMS master is proposed for improving the replication quality of PDMS double-casting. The effects of heat treatment on interfacial adhesion are investigated in terms of uncured low molecular weight chains, surface energy, and surface roughness. The PDMS master treated at 150 °C for 72 h shows the highest replication quality of micropatterns with a diameter and height of 30 μm.
