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4 papers
Reversible Sulfuric Acid Doping of Graphene Probed by in-situ Multi-Wavelength Raman Spectroscopy
Gwanghyen Ahn, Sunmin Ryu
Since lattice strain and charge density affect various material properties of graphene, a reliable and efficient method is required for quantification of the two variables. While R…
Two-Dimensional Water Diffusion at a Graphene-Silica Interface
DaeEung Lee, Gwanghyun Ahn, Sunmin Ryu
Because of the dominant role of the surface of molecules and their individuality, molecules behave dis-tinctively in a confined space, which has far-reaching implications in many p…
Optical Probing of Electronic Interaction between Graphene and Hexagonal Boron Nitride
Gwanghyun Ahn, Hye Ri Kim, Taeg Yeoung Ko +5
Even weak van der Waals (vdW) adhesion between two-dimensional solids may perturb their various materials properties owing to their low dimensionality. Although the electronic stru…
Optical Separation of Mechanical Strain from Charge Doping in Graphene
Ji Eun Lee, Gwanghyun Ahn, Jihye Shim +2
Graphene, due to its superior stretchability, exhibits rich structural deformation behaviors and its strain-engineering has proven useful in modifying its electronic and magnetic p…