Great ideas here Dennis. I love the circle patterns and I REALLY love the font. A few thoughts and comments. First, I wonder if you can vary a bit on the star burst on the center circle - maybe remove it, make it larger or center it. Not sure which will look better. Second thought. We may be getting more interested in a word mark (I know we didn't put it in the initial description.) Can you try to use the circle patterns to replace the O in Optofluidics. Either the first or 2nd 'o'.
About #144 and the other dot patterns - someone thought it read "Coptofluidics" so we're dropping that idea. I do like #187 and #188.
Can I see what it would look like if the whole word was in the more italic, flowy font you used in #141? Also maybe "Opto" in #187 font and "fluidics" in the #141 font?