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PDMS microstructure grown on Teflon Coated Silicon Wafers.
Make Polydimethylsiloxane (PDMS) microstructures using teflon coated silicon wafers.
PDMS is used for soft lithography for flow delivery in microfluidics chips.
Silicon wafers are one of the best substrates used in designing channels. PDMS is poured onto the silicon wafer where it hardens. Details of the channel leave an imprint on the PDMS when peeled off. It's interesting to note the PDMS is also used in SillyPuddy! Researchers use the devices made to to create lab-on-a-chip devices.
Below is just an example of the wafer used for this purpose:
Teflon 500nm thick