S. Takayama et al., Topographical micropatterning of poly(dimethylsiloxane) using laminar flows of liquids in capillaries, ADVAN MATER, 13(8), 2001, pp. 570
"Micro-landscapes" suitable for investigating the behavior of living cells
under different stimuli are cast from poly(dimethylsiloxane) by simultaneou
sly etching a slab and a relief (see Figure) with a Bu4NF solution and flus
hing out dissolved material with N-methylpyrrolidone. It is crucial that al
l liquid streams during the etching process are laminar. Various accessible
topographies for the relief and examples of applications are given.