Professor KIM Youn Sang (Graduate School of Convergence Science and Technology) has developed a transparent element which generates enough electricity to light an LED when it touches water. When a water drop touches the surface of an object with electric charge, a change in the object’s electric charge occurs. Professor Kim succeeded in turning this change into electric energy, generating as much as 0.42㎿ per water drop. The possibility of such electricity generation has been proposed before, but scholars did not give much weight to the thought as most believed only a minimal amount of energy could be produced. Professor Kim’s work has significantly increased the amount of energy that may potentially be generated.

• The research was published in Energy & Environmental Science on 16 Apr 2014.
• The research was introduced in the April 24 edition of the Washington Post.
• Professor KIM Youn Sang’s lab: http://www.snunml.com/
• SNU Graduate School of Convergence Science and Technology: http://gscst.snu.ac.kr

Summary by LEE Hee Un, SNU English Editor, gurume0221@snu.ac.kr