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 Making Graphene Using Laser-induced Phase Separation ADMINI 2016.12.07 2102
Notice Hyper-stretchable elastic piezoelectric energy harvester ADMINI 2015.04.29 7113
Notice “Nature Materials” News & Views wrote by Prof. Sang Ouk Kim admin 2015.02.17 8953
Notice Academic Achievements & Related Awards admin 2015.02.17 6893
Notice Best Paper Award at 2014 Pan Pacific Microelectronic Symposium admin 2015.02.17 6785
» The Way towards Commercialization of Highly Efficient Nanogenerator admin 2015.02.17 7017
Notice The First Demonstration of Self-powered Cardiac Pacemaker admin 2015.02.17 6743
22 Equipment Development: “Hu:u” -New Concept Indoor Environmental Gauge file admin 2015.02.17 4799
21 Seon-Jin Choi, Jinsup Lee Prize Winner at the “9th 1nside” Edge International Thesis Competition from Samsung Electro-mechanics. file admin 2015.02.17 3354
20 Excellent Paper Award at the 2014 Conference on Next Generation Lithography file admin 2015.02.17 3289
19 3D Free Standing Structure Made of Graphene. file admin 2015.02.17 3244
18 One of 2013 KAIST Top 10 Representative R&D Outcomes. file admin 2015.02.17 3239
17 Prize Winner at 20th SAMSUNG Human Tech Paper award (2013) file admin 2015.02.17 3229
16 Intel Best Paper Award at Electronic Components and Technology Conference file admin 2015.02.17 3187
15 Review article from Prof. Sang Ouk, Kim group was published in 25th anniversary of Advanced Materials. file admin 2015.02.17 3178
14 New Nanocomposite Catalyst applied for Li-O2 Batteries with improved High-capacity and Long-cycle file admin 2015.02.17 3142
13 Mobile Sensor Array Platform & its Circuit Development. file admin 2015.02.17 3112
12 Excellent paper Award at the Optical Society of Korea. file admin 2015.02.17 3111
11 Grand Prize at the Dow Chemical Korea Award 2014 file admin 2015.02.17 3093
10 The Convergence New Technology Fair Silver Award file admin 2015.02.17 3066
9 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 3038