In a study conducted in 2003 at the Central Science Laboratory in Sand Hutton, England, polyacrylamide was treated similarly as food during cooking.
Micropatterns can be made on a wide range of substrates, from glass to polyacrylamide and Polydimethylsiloxane (PDMS), allowing a lot of forces-related experiments.
Rhoda A. Narins, M.D.; William P. Coleman, M.D.; Rod J. Rohrich, M.D.; Gary Monheit, M.D.; Richard Glogau, M.D.; Fredric Brandt, M.D.; Suzanne Bruce, M.D.; Lawrence Colen, M.D.; Steven Dayan, M.D.; Ian Jackson, M.D.; Corey Maas, M.D.; Alexander Rivkin, M.D.; Anthony Sclafani, M.D.; Joan C. Spivak, M.H.S., "12-Month Controlled Study in the United States of the Safety and Efficacy of Permanent 2.5% Polyacrylamide Hydrogel Soft-Tissue Filler."