1. Dooyoung Hah, Euisik Yoon, and Songcheol Hong, "An Optomechanical Pressure Sensor Using Multimode Interference Couplers with Polymer Waveguides on a Thin p+-Si Membrane," Sensors and Actuators A: Physical, Vol. 79, No. 3, pp. 204-210, Feb. 2000.
2. Dooyoung Hah, Euisik Yoon, and Songcheol Hong, "A Low Voltage Actuated Micromachined Microwave Switch Using Torsion Spring and Leverage," IEEE Transactions on Microwave Theory and Techniques, Vol. 48, No. 12, pp. 2540-2545, Dec. 2000.
3. Il-Joo Cho, Eun-Chul Park, Songcheol Hong, and Euisik Yoon, "Atomic Force Microscope Probe Tips Using Heavily Boron-Doped Silicon Cantilevers Realized in a <110>Bulk Silicon Wafer," Japanese Journal of Applied Physics, Vol. 39, No. 12B, pp. 7103-7107, Dec. 2000.
4. Kwang-Seok Yun, Hong-Jeong Kim, Segyeung Joo, Juhyoun Kwak, and Euisik Yoon, "Analysis of heavy-metal-ions using mercury microelectrodes and a solid-state reference electrode on a Si wafer," Japanese Journal of Applied Physics, Vol. 39, No. 12B, pp. 7159-7163, Dec. 2000.