This PDF file includes:

• Electrowetting (EWOD)
• Dielectrophoresis on liquids (LDEP)
• Dielectrophoresis on particles (DEP)
• Dielectrophoresis on crosslinked microgels (SDEP)
• fig. S1. Configuration and manipulations on an electromicrofluidic platform.
• fig. S2. Visualization of a heterogeneous architecture with a fluorescence microscope, a fluorescence confocal microscope, and an SEM.
• fig. S3. NIH/3T3 fibroblast culture on heterogeneous architecture composed of PEGDA and GelMA.
• Legends for movies S1 to S7

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Other Supplementary Material for this manuscript includes the following:

• movie S1 (.mpg format). Manipulation and crosslinking of liquid microgels (Fig. 1J).
• movie S2 (.mpg format). Postcrosslinking assembly of microgels (Fig. 2, A to C).
• movie S3 (.mpg format). Precrosslinking assembly of microgels (Fig. 2, D and E).
• movie S4 (.mpg format). Postcrosslinking assembly of microgels with particles (Fig. 3, B to G).
• movie S5 (.mpg format). Precrosslinking assembly of microgels with particles (Fig. 3, H and I).
• movie S6 (.mpg format). Beating of patterned cardiomyocytes at 24 and 48 hours in culture (Fig. 4F).
• movie S7 (.mpg format). Manipulation and crosslinking of microgels with cells (Fig. 4I).