Who is kahng?

Kahng is a name that can refer to various individuals, but one notable figure is Kwang-Hyung Kahng, a prominent South Korean physicist known for his contributions to the field of condensed matter physics. Without additional context, it's difficult to pinpoint a specific "Kahng" as there may be others in different fields or regions. If you have a particular Kahng in mind, please provide more details for a more accurate answer.