Rich applications of bubble/gas self-transportation and manipulation using femtosecond laser-structured materials (IMAGE)
Caption
It provides an idea about the gas self-transportation along an open superhydrophobic microchannel with a width <100 μm. The femtosecond laser-induced hierarchical micro/nanostructures promote superhydrophobicity in air and excellent underwater superaerophilicity on the polytetrafluoroethylene (PTFE) surface. Immersing the PTFE surface with superhydrophobic microgrooves in water generates hollow microchannels between the PTFE substrate and the water medium. Underwater gas can flow through this channel. When a microchannel connects two underwater bubbles, the gas spontaneously transports from the small bubble to the large bubble along this hollow microchannel. Gas self-transportation can be extended to more functions related to manipulating bubbles underwater, such as unidirectional gas passage and water/gas separation.
Credit
by Jiale Yong, Qing Yang, Jinglan Huo, Xun Hou, Feng Chen.
Usage Restrictions
Credit must be given to the creator.
License
CC BY