Figure 11.

The distances etched for microfluidic channels with SU8 sacrificial cores immersed in piranha mixtures with a ratio of (1:1) (H₂O₂:H₂SO₄) at 100 °C for 6 h that were replaced every hour (triangles and solid line) and the microfluidic channels for which the mixture was not replaced (circles and light gray dotted line) reflecting a decreased distance etched due to the effects of H₂O₂ self decomposition.