Figure 5.

Microfluidic-guided assembly of cell-laden hydrogel building blocks. (A) Guided movement of microtrains along a sinusoidal-shaped rail in a microfluidic channel. (B) The complex self-assembly such as Greek temple was completed simultaneously by applying fluidic force inside a railed microfluidic channel. Each microstructure (37 microstructures in total) is fabricated independently on a corresponding rail. (C) Heterogeneous assembly process on the basis of the cross-solution movement scheme. (D) Assembled 3 × 3 matrix with two different living cells using cell-containing PEG-DA hydrogel building blocks.