신소재공학과

Research Highlight

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Prof. Keon Jae Lee and co-workers had made a progressive breakthrough for enhancing the operating efficiency of self-powered flexible piezoelectric energy harvester. The flexible and lightweight energy harvester, called nanogenerators, can scavenge external force from the extremely tiny impulsion triggered by wind flow, water flow, heartbeats, diaphragm activities, and respiration movements so as to convert it into electrical signals, which not only constructed self-powered flexible electronic systems, but also was exploited as permanent power sources for implantable biomedical devices such as cardiac-tachometers, pacemakers, and deep brain stimulators. Until now, poor efficiency and complicated fabrication process are regarded as biggest barrier against mass commercialization. Transferring high-quality piezoelectric thin film from sapphire to plastic substrate via laser lift off (LLO) technique made the PZT thin film nanogenerator show high-output performance of ~250V which is enough for turning on 100 LEDs. This is almost 40 times higher than previously reported similar concepts. 

No. Subject Author Date Views
Notice Development of disease diagnjosis sensor using animal protein catalyst ADMINI 2017.07.20 261
Notice Making Graphene Using Laser-induced Phase Separation ADMINI 2016.12.07 2630
Notice Hyper-stretchable elastic piezoelectric energy harvester ADMINI 2015.04.29 7676
Notice “Nature Materials” News & Views wrote by Prof. Sang Ouk Kim admin 2015.02.17 9637
Notice Academic Achievements & Related Awards admin 2015.02.17 7444
Notice Best Paper Award at 2014 Pan Pacific Microelectronic Symposium admin 2015.02.17 7322
» The Way towards Commercialization of Highly Efficient Nanogenerator admin 2015.02.17 7528
Notice The First Demonstration of Self-powered Cardiac Pacemaker admin 2015.02.17 7248
23 Equipment Development: “Hu:u” -New Concept Indoor Environmental Gauge file admin 2015.02.17 5024
22 Seon-Jin Choi, Jinsup Lee Prize Winner at the “9th 1nside” Edge International Thesis Competition from Samsung Electro-mechanics. file admin 2015.02.17 3593
21 Excellent Paper Award at the 2014 Conference on Next Generation Lithography file admin 2015.02.17 3526
20 3D Free Standing Structure Made of Graphene. file admin 2015.02.17 3485
19 One of 2013 KAIST Top 10 Representative R&D Outcomes. file admin 2015.02.17 3478
18 Prize Winner at 20th SAMSUNG Human Tech Paper award (2013) file admin 2015.02.17 3473
17 Intel Best Paper Award at Electronic Components and Technology Conference file admin 2015.02.17 3403
16 Mobile Sensor Array Platform & its Circuit Development. file admin 2015.02.17 3399
15 Review article from Prof. Sang Ouk, Kim group was published in 25th anniversary of Advanced Materials. file admin 2015.02.17 3397
14 Excellent paper Award at the Optical Society of Korea. file admin 2015.02.17 3337
13 New Nanocomposite Catalyst applied for Li-O2 Batteries with improved High-capacity and Long-cycle file admin 2015.02.17 3336
12 Grand Prize at the Dow Chemical Korea Award 2014 file admin 2015.02.17 3310
11 The Convergence New Technology Fair Silver Award file admin 2015.02.17 3293
10 Doctoral candidate Wan Heui Lee won the "Outstanding Poster Award" at The 2013 Spring Conference of the Kroean Institute of Metals and Materials", held in Jeju, Korea file admin 2015.02.17 3138