Multilayer Microfluidic Structures

Replication of a multilayer fluidic structure (minimum 4 layers, any number of the intermediate 2 layers) including the 3D printable PDMS casting molds and molding tray. This paper provides an excellent example of how microfluidics can really be expanded into the third dimension with the use of digital design and the improving resolution and material availabilities of additive manufacturing technology. This is a replication of their multilayer device (figure 5, more details in the supporting information) but do look at the other great devices in the paper. These molds were 3D printed using a 3D Systems ProJet 3000 (binder jetting type printer) however, stereolithography (e.g., Form 2, MiiCraft) as a DIY method or material jetting (e.g., Stratasys) or selective laser sintering (Form Fuse) as a service are alternative fabrication methods. Each layer 20 x 20 x 5 mm 2X2 mold is 52 x 52 x 15 mm Layer molds: 20 x 20 x 8 mm (fluid feature mold), 20 x 20 x 2 mm (adapter mold) Materials: Molds: VisiJet epoxy EX200 with VisiJet wax support material S100. Printed on a 3D Systems ProJet 3000 (binder jetting type printer) Layers: PDMS cast (Sylgard 184) Inspiration/reference: Glick, Lin et al., Rapid assembly of multilayer microfluidic structures via 3D-printed transfer molding and bonding, https://www.nature.com/articles/micronano201663 Available files (in the zip folder): Import with millimeter dimensions STL IGES/IGS STEP