The last type is thermal frontal polymerization, Polymer Science: A Comprehensive Reference, Volume 4 doi:10.1016/B978-0-444-53349-4.00124-2 957 Author's personal copy 958 Frontal Polymerization Mask Photoresist Collimated UV source λ = 365 nm Glass slide Spacer (100 s of μm) Solid front ...