세미나안내

[2013 11 06] 정기세미나 7th

Self-Powered Flexible Electronic Systems

MSE Graduate Students and Researchers

관리자 | 2013.11.04 16:08 | 조회 3029


Reception: MSE Graduate Students and Researchers

Reference: MSE Professors

Subject: The 7th Seminar - Fall Semester, 2013 

 

 Date: 2013. 11. 6(Wed), 17:00 ~ 18:15

 Place: Science Building, Room.202 Multimedia Room

 Title: Self-Powered Flexible Electronic Systems

 Speaker: Prof. Keon Jae Lee (KAIST)

Host of a Seminar: Prof. Sei Kwang Hahn

Speaker Language: ENGLISH

 

Abstract:

This seminar introduces three recent progresses that can extend the application of self-powered flexible inorganic electronics. The first part will introduce self-powered flexible piezoelectric energy harvesting technology. Energy harvesting technologies converting external sources (such as vibration and bio-mechanical energy) into electrical energy is recently a highly demanding issue. The high performance flexible thin film nanogenerator was fabricated by transferring the BaTiO3 thin film from bulk substrates. Second, we report the nanocomposite generator (NCG) for achieving a simple, low-cost, and large area fabrication based on BaTiO3 (or PZT) nanoparticles and graphitic carbons (CNT or RGO).

The second part will introduce flexible electronics including memory and large scale integration (LSI). Flexible memory is an essential part of electronics for data processing, storage, and radio frequency (RF) communication. To fabricate a fully functional flexible memory, we integrated flexible single crystal silicon transistors with an amorphous titanium oxide (a-TiO2) based memristor to control the logic state of memory. Finally, the third part will discuss the flexible GaN LED for implantable biomedical applications. Inorganic III-V light emitting diodes (LEDs) have superior characteristics, such as long-term stability, high efficiency, and strong brightness. Our flexible GaN thin film LED enable the dramatic extension of not only consumer electronic applications but also the biosensing scale. A water-resist and a biocompatible PTFE-coated flexible LED biosensor can detect PSA at a detection limit of 1 ng/mL.

References (* is corresponding author)

[1] K. Lee* et al., Nano Letters  11(12), 5438, 2011.                       [2] K. Lee* et al., Nano Letters  10(12), 4939, 2010.

[3] K. Lee* et al., Nano Letters  12(9), 4810, 2012.                       [4] K. Lee* et al., Adv. Mater, Front Cover, 24, 2999, 2012.

[5] K. Lee* et al., ACS Nano, 7(5), 4545, 2013.              [6] K. Lee* et al., ACS Nano, 7(3), 2651, 2013.

[7] K. Lee* et al., Nano Energy  1, 145, 2012.                             [8] K. Lee* et al., Adv. Energy Mater. Cover, Online published.

[9] K. Lee* et al., Small,  Cover, Online published.

 

 

Department of Materials Science and Engineering



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