Jeong Ryeol Choi received his Ph.D. degree in physics from Korea University in 2001. He is presently working in the Department of Electronics at Kyonggi University in South Korea as a professor. His research interests include photodetection based on low-dimensional materials, characterization of quantum effects in nanomaterials, nanostructures, and nanoelectronics, and the optomechanics of coupled nanodevices.