Issue 19, 2012

Hydrogel microrobots actuated by optically generated vapour bubbles

Abstract

A novel hydrogel microrobot made of poly(ethylene glycol) diacrylate (PEGDA) is reported. This disk-shaped microrobot is optothermally actuated by laser-induced bubbles. A pulsed laser is used to smoothly actuate an 80-μm-diameter bubble microrobot at up to 320 μm s−1. A single microrobot or a pair of microrobots working in cooperation were used to assemble 20-μm-diameter polystyrene beads into different patterns. The microrobots were also used to assemble patterns made of single yeast cells and cell-laden agarose microgels. The patterned yeast cells and cell-laden microgels were cultured, and the cells successfully multiplied.

Graphical abstract: Hydrogel microrobots actuated by optically generated vapour bubbles

Supplementary files

Article information

Article type
Paper
Submitted
01 May 2012
Accepted
08 Aug 2012
First published
16 Aug 2012

Lab Chip, 2012,12, 3821-3826

Hydrogel microrobots actuated by optically generated vapour bubbles

W. Hu, K. S. Ishii, Q. Fan and A. T. Ohta, Lab Chip, 2012, 12, 3821 DOI: 10.1039/C2LC40483D

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