Fig. 2: All-liquid 3D printing for reconfigurable all-liquid optical fibers.
From: Structured liquid-based reconfigurable all-liquid optical fibers
a Interfacial tension (IFT) evolution versus the mass concentration of PSS in the water phase and N-PDMS in the oil phase. b Parameter domain for the liquid tubule formation based on the amount of PSS in the water phase and N-PDMS in the oil phase. In this phase diagram, the content of PSS ([c]PSS) and N-PDMS ([c]N-PDMS) in weight percent (wt.%) was changed to alter the shape of the pendant droplet. c Various patterns fabricated by the all-liquid 3D printing, including 2D patterns, i.e., spiral, flower, a City u logo, and a 3D spring. d In-situ AFM image of the water-oil interface separating the water core and oil cladder. The lateral size is 20 μm × 20 μm, and the scale bar shows the height fluctuation of the interface. e Microscopic picture of the RAOF after settling for 10 minutes. The wrinkles indicate the structural relaxation of the interfacial assemblies. Scale bars, c 1 cm; e 500 μm.
