Sang-Pil Kim

TL;DR: A critical grain size is identified below which the contribution of the tilt boundaries to the conductivity becomes comparable to that of the contribution from the grains themselves, which is significantly higher than that of any other thermoelectric interfaces reported in the literature.

TL;DR: In this paper, the formation and growth of solid-electrolyte interphase (SEI) for the case of ethylene carbonate, dimethyl carbonate and mixtures of these electrolytes using molecular dynamics simulations was studied.

TL;DR: Water microdroplets containing graphene oxide and a second solute are shown to spontaneously segregate into sack-cargo nanostructures upon drying, promising for many applications where nanoscale materials should be isolated from the environment or biological tissue.

TL;DR: For the first time, it is shown that friction can be altered over a wide range by fluorination, and a transition from ordered to disordered atomic stick-slip upon fluorination is found, suggesting that fluorination proceeds in a spatially random manner.

TL;DR: It is shown that ultrathin graphene oxide (GO) films can serve as effective barriers for both liquid and vapor permeants, and the Hg barrier performance of GO films is found to be sensitive to residual water in the films, consistent with molecular dynamics simulations that show lateral diffusion of Hg atoms in graphene interlayer spaces that have been expanded by hydration.