Fig. 4: Crystal growth in tunable LMOI liquid shell.
From: Tunable encapsulation of sessile droplets with solid and liquid shells
Photograph of the crystals made from LMOI. Scale bar = 1 mm. a Pentahydrate copper sulfate b Rochelle salt c, sodium nitrate, and d, lysozyme protein. For lysozyme, the Scale bar = 100 \({{{{{\rm{\mu }}}}}}{{{{{\rm{m}}}}}}\). e Variable size crystals of copper sulfate were prepared by changing the volume of LMOI from 5 to 60 µL. Scale bar = 1 mm. The XRD plot confirms a single crystal of f, pentahydrate copper sulfate, g Rochelle salt, and h, sodium nitrate crystals produced from LMOI. Insets represent XRD of the crystals produced from the droplet evaporation on OI, where the polycrystalline structure is evident. i Polarization-electric field (PE) hysteresis loop at 20 °C for the single crystal Rochelle salt crystal produced from LMOI. The data confirms ferroelectric behavior of the Rochelle salt crystal. Inset: a Rochelle salt crystal attached to a printed circuit board (PCB) for PE measurement. Scale bar = 2 mm. j Schematic and k, photograph of the automated setup for the large number fabrication of LMOI. Where the droplet is formed via a syringe and then rolled onto a slant powder/particle bed. Due to the rolling of the droplet, the hydrophobic particle settles at the interface of the droplet and forms an LM. Then, the prepared LM falls gently on the oil-infused surface. The surface is mounted on the automated X-Y stage. Scale bar = 8 mm. Source data are provided as a Source Data file.
