4 papers
Polymer-Regulated Freezing of Water Droplets Revealed by Synchrotron X-ray Imaging and Raman Spectroscopy
Hyeonjun An, Bomi Kim, Jae Kwan Im +5
Adding a polymer to a sessile water droplet not only lowers its freezing point but also suppresses the tip singularity that forms during its freezing on cold substrates. Here, we e…
X-ray Microscopy Study of Freezing Sessile Droplets
Jae Kwan Im, Hyeonjun An, Seob-Gu Kim +2
A sessile water droplet on a cold substrate freezes into a shape with a sharp apex because of water's expansion upon freezing, yielding a universal tip angle across various conditi…
Suppressed terahertz dynamics of water confined in nanometer gaps
Hyosim Yang, Gangseon Ji, Min Choi +10
Nanoconfined waters have been extensively studied within various systems, demonstrating low permittivity under static conditions; however, their dynamics have been largely unexplor…
Confinement twists achiral liquid crystals and causes chiral liquid crystals to twist in the opposite handedness: Cases in and around sessile droplets
Jungmyung Kim, Joonwoo Jeong
We study the chiral symmetry breaking and metastability of confined nematic lyotropic chromonic liquid crystal (LCLC) with and without chiral dopants. The isotropic-nematic coexist…