Figure 7.

Manipulation of all‐aqueous microfluidic liquid jets. a) Schematics of the microfluidic device for manipulating all‐aqueous jets by electrical charging at applied DC voltages. b) Optical microscope images of all‐aqueous jets under different electrical voltage; scale bars: 200 µm. c) Schematics of hearing by the proposed “interfacial ear” of the all‐aqueous liquid jets. d) Visualization of the deformation of the all‐aqueous interfaces in response to the applied vibration; left: no external vibration is applied; right: a musical note of 200 Hz is applied by a loudspeaker. e) Optical microscope images of the all‐aqueous liquid jets as the frequency and the amplitude of the mechanical wave. a,b) Reproduced with permission.78 Copyright 2013, Royal Society of Chemistry. c–e) Reproduced with permission.151 Copyright 2014, Springer Nature.