Figure 1
From: Experimental Observation of Bohr’s Nonlinear Fluidic Surface Oscillation
Deformed microjet cavity based on fluidic surface oscillation.
(a) Microscope image of the liquid column of a deformed microjet seen from the side. Mean radius is 15 μm. The bright region of about 3 μm thickness is the segment excited by a pump laser beam to form a two-dimensional microcavity. Image from Kwak et al.33. (b) Microscope image of an orifice for the deformed microjet. The orifice is filled with liquid to obtain a clear image. (c) Multipolar decomposition of the boundary profile of the orifice of (b). The origin is chosen so as to make the dipolar component vanish. In this decomposition, quadrupolar (denoted by 2) and octapolar (denoted by 4) components are dominant. (d) A 3-D model of the deformed microjet. The pattern is stationary while the liquid moves in z direction. Extreme positions of surface oscillation with stationary cross sections are indicated as D1, D2, D3 and so on.
