Lee D.W. – TechConnect Briefs

Improve of Photovoltaic Performance of Dye-sensitized Solar Cell by Concentrating Solar Energy

Kim Y-W., Cho E., Choi S.C., Choi S.C., Lee D.W., Pusan National University, KR

Dye-sensitized solar cell (DSSC) is extremely promising because it is made of low-cost materials and does not need elaborate apparatus to manufacture against the silicon solar cell. Accordingly, the DSSC is constantly researched globally. One [...]

Improve of Photovoltaic Performance of Dye-sensitized Solar Cell by Concentrating Solar Energy

Kim Y-W., Cho E., Choi S.C., Choi S.C., Lee D.W., Pusan National University, KR

Dye-sensitized solar cell (DSSC) is extremely promising because it is made of low-cost materials and does not need elaborate apparatus to manufacture against the silicon solar cell. Accordingly, the DSSC is constantly researched globally. One [...]

Machining Using Fast Tool Servo Combined with Ultrasonic Vibrator

Choi S.C., Hong Lu, Lee D.W., Pusan University, KR

In the diamond turning which conjunction with fast tool servo (FTS), burr formation is a key factor of the work piece surfaces roughness and diamond tool wear. This paper presents a machining method that combined [...]

Development of Precision Stage with Magnified Displacement System

Kim J.G., Choi S.C., Lee D.W., Pusan National University, KR

In this study, a new precision stage was developed using self-lever-mechanism to magnify its moving displacement optically. The developed precision stage was constructed as a position-sensitive photodiode (PSPD), a laser diode (LD), and a hinge-connected [...]