Ungyu Paik

TL;DR: It is demonstrated that few- and several-layered graphene and graphene oxide (GO) sheets can be engineered to exhibit the desired gas separation characteristics, and tunable gas transport behavior was strongly dependent on the degree of interlocking within the GO stacking structure.

TL;DR: This work introduces a set of materials and design concepts for a rechargeable lithium ion battery technology that exploits thin, low modulus silicone elastomers as substrates, with a segmented design in the active materials, and unusual 'self-similar' interconnect structures between them.

TL;DR: A flexible microfluidic device that adheres to human skin that collects and analyzes sweat during exercise and could be used during athletic or military training and adapted to test other bodily fluids such as tears or saliva is developed.

TL;DR: The extent to which nanoscale engineering of electrode geometry can be used to advantage in the design of rechargeable batteries with highly reversible capacity and long-term cycle stability is demonstrated.

TL;DR: In this article, a template-engaged strategy was proposed to transform Ni-Ni Prussian blue analogue (PBA) nanoplates into porous carbon coated nickel phosphides nanoprocessors with mixed phases of Ni5P4 and Ni2P. Benefitting from their structural merits and the in situ formed catalytically active oxidized nickel species, the as-derived Nickel phosphides manifest excellent electrocatalytic activity for OER.