Fig. 13. Average influence of viscosity ΔLAη and surface tension ΔLAγ on the light absorption for 120 pl (top) and 30 pl (bottom) drops. Light absorption is a measure for good surface coverage. The positive values for ΔLAγ indicate a moderate increase of dot light absorption for higher surface tension γ, especially for the larger drops. The negative values for ΔLAη demonstrate a considerable negative impact of viscosity on dot light absorption.
