Figure 5.

3D-printed devices for sample pretreatment. (A) Spiral microfluidic device to separate blood cells and platelets from plasma, as the cells and platelets tend to flow in a narrowing band near the inner wall of the spiral channel. Reproduced with permission from [88]. Copyright (2016) Royal Society of Chemistry. (B) Helical microfluidic device to separate magnetic nanoclusters coupled to E. coli from free magnetic nanoclusters. Reproduced with permission from [89]. Copyright (2015) Springer Nature, available under Creative Commons Attribution. (C) A hand-driven microfluidic channel with a groove-like structure to separate platelets from blood mononuclear cells. Reproduced with permission from [90] Copyright (2018) Springer Nature. (D) Trapezoidal filter equipped with a microfluidic channel for the preconcentration of E. coli captured on magnetic beads. Reproduced with permission from [91] Copyright (2017) Elsevier.