Publications by authors named "Soo Hyun Chang"
Crystallographic characteristics, including grain boundaries and crystallographic orientation of each grain, are crucial in defining the properties of two-dimensional materials (2DMs). To date, local microstructure analysis of 2DMs, which requires destructive and complex processes, is primarily used to identify unknown 2DM specimens, hindering the subsequent use of characterized samples. Here, a nondestructive large-area 2D crystallographic analytical method through sticky-note-like van der Waals (vdW) assembling-disassembling is presented.
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- Graphdiyne (GDY) is a promising 2D material known for its excellent electronic properties, but its widespread use in flexible applications is limited by challenges in uniform, large-scale production.
- Researchers have successfully developed a method to synthesize centimeter-scale bilayer hydrogen substituted graphdiyne (Bi-HsGDY) on a germanium substrate using low-temperature chemical vapor deposition (CVD).
- The Bi-HsGDY demonstrates impressive performance in field effect transistors (FETs) and has been used to create a fast-responding strain sensor, even capable of Morse code communication, paving the way for new flexible device applications.
A size-exclusion HPLC method for the determination of sodium chondroitin sulfate (SCS) in pharmaceutical preparations has been developed and validated. The most important feature of this method compared with the previously reported assay methods was improved economical and determinative applications through direct analysis of SCS from pharmaceuticals. The linearity, precision, specificity, and accuracy of the method were established and validated.
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