DLD: hydrodynamic microfluidic device

DLD is hydrodynamic microfluidic technique that includes a wide family of devices for the sorting of particles based on their size in a continuous flow configuration. Although the technique is quite well known since more than one decad], there is a continuous quest toward better predictive theoretical models able to anticipate the cut-off diameter and for the development of more efficient fabrication approaches to enable an accurate separation of millimeter, micrometer and even sub-micrometer sized particles by a high control level of the pillars dimensions and shapes. To combine micrometric feature resolution, one-step fabrication and avoidance of contamination from multiple fabrication steps, the Dilase 3D setup provides an efficient solution for mm-scale DLD geometries. All designs have been fabricated using a commercial DS3000 photosensitive polymer (DWS).

A: SEM micrograph of the DLD device

More informations : Direct laser fabrication of meso-scale 2D and 3D architectures with micrometric feature resolutionAngelo Accardo Rémi Courson, Roberto Riesco, Vincent Raimbault, Laurent MalaquinAdditive Manufactering, 2018