Ordered surface crack patterns in situ formed under confinement on fluidic microchannel boundaries in polydimethylsiloxane
Year: 2021
Journal: Lab Chip, Volume 21, FEB 21, page 668–673
Authors: Bu, Yang; Ni, Sheng; Yobas, Levent
Organizations: Research Grant Council of Hong Kong [16200719, 16201017]
We present ordered surface crack patterns discovered in microfluidic channels/chambers in polydimethylsiloxane (PDMS). The cracks are formed in situ under confinement due to compression applied following an oxygen plasma step in a soft lithography process. The crack patterns are noticeable only after fluorescent labeling and vary with fluidic layout as well as material compliance.
