4 ms·
Water droplets have been made to do the seemingly impossible [video]
- olliej 7y agoThis is so neat. If authors happen to be around: * how persistent is the charge? Eg does it eventually reduce to neutral after some amount of drops? Or is the movement dependent on initial drop velocity? * how mechanically robust is the surface? * in the “pipette” demo you started with a drop, but that would imply you have to have already measured the droplet - are you able to control the lifting power sufficiently to pull up just the required amount?
- respinal 7y agoIt is! That can be used for so many applications like microfluidics (my research field). I am not one of the authors, but you can see their paper here (https://www.nature.com/articles/s41563-019-0440-2 https://www.nature.com/articles/s41563-019-0440-2). They have more details there. They modified the surface chemically, “The superamphiphobic surface is made from fluorinated porous silicon dioxide.” You can see some details here (https://www.chemistryworld.com/news/gravity-defying-droplets-race-upside-down-on-super-slippery-surface/3010851.article https://www.chemistryworld.com/news/gravity-defying-droplets...), but may need to sign up. If you can’t get that info, let me know.