A cast layer of SU-8 2007 was determined experimentally to shrink 44 % after a softbake of 6 h at 65 °C followed by 7 h at 95 °C. For SU-8 2010, this is about 32 % and for SU-8 2002, 61 % . Exceptionally thick layers (>1 mm) can be deposited by casting too., Fig. 1 schematically illustrates the process flow for the replication of micro pitched SU-8 pillar arrays by EBL. A layer of SU-8 resist supplied by MicroChem Ltd., with two different thickness of 5 μm and 10 μm respectively, was spin coated on a fresh Si wafer after a layer of HMDS as adhesion layer, followed by a precisely controlled two-step pre-bake at 65 °C for 3 min and 95 °C for 10 , For thin layers of SU-8 (thickness < 100 µm), another option is to set two hot plates at 65°C and 95°C, respectively. The wafer can be baked first at 65°C, and then transferred to the 95°C hot plate [7]. SU-8 post exposure baking (PEB): The SU-8 layer must be heated again after the exposure phase., For su-8 2050: Spin at 2000 rpm for 30 seconds with the acceleration of 300 rpm/second. leaving either a nearly full-thickness SU-8 layer or sometimes more of a thin haze. Our process is:, Film thickness as a function of the spin speed for different SU-8 formulations Such curves are provided by manufacturers for each type of photoresist. They must be used to select the appropriate spinning speed according to the thickness of SU-8 film required., .