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 KAIST Develops Sodium Ion Batteries using Copper Sulfide ADMINI 2018.04.24 674
Notice Researchers develop flexible vertical micro LED ADMINI 2018.02.07 834
Notice Lifespan of Fuel Cells Maximized using Small Amount of Metals ADMINI 2018.01.21 938
Notice A New Spin Current Generating Material Developed ADMINI 2017.12.21 1106
Notice Professor Kim Sang Ouk of KAIST participated in editorship of GRAPHIN NEW MATERIALS ADMINI 2017.10.23 1546
Notice Pd nanowire array-based ultra-fast hydrogen gas sensor by using engineered nanofiltration of metal-organic framework ADMINI 2017.09.27 1695
36 “Nature Materials” News & Views wrote by Prof. Sang Ouk Kim file admin 2015.02.17 11532
35 Hyper-stretchable elastic piezoelectric energy harvester file ADMINI 2015.04.29 9484
» The Way towards Commercialization of Highly Efficient Nanogenerator file admin 2015.02.17 9137
33 Academic Achievements & Related Awards file admin 2015.02.17 9104
32 Best Paper Award at 2014 Pan Pacific Microelectronic Symposium file admin 2015.02.17 8950
31 The First Demonstration of Self-powered Cardiac Pacemaker file admin 2015.02.17 8864
30 Equipment Development: “Hu:u” -New Concept Indoor Environmental Gauge file admin 2015.02.17 5665
29 Making Graphene Using Laser-induced Phase Separation file ADMINI 2016.12.07 4387
28 Mobile Sensor Array Platform & its Circuit Development. file admin 2015.02.17 4035
27 Excellent Paper Award at the 2014 Conference on Next Generation Lithography file admin 2015.02.17 4017
26 Intel Best Paper Award at Electronic Components and Technology Conference file admin 2015.02.17 4010
25 Seon-Jin Choi, Jinsup Lee Prize Winner at the “9th 1nside” Edge International Thesis Competition from Samsung Electro-mechanics. file admin 2015.02.17 3976
24 Grand Prize at the Dow Chemical Korea Award 2014 file admin 2015.02.17 3926
23 One of 2013 KAIST Top 10 Representative R&D Outcomes. file admin 2015.02.17 3917
22 3D Free Standing Structure Made of Graphene. file admin 2015.02.17 3912
21 The Convergence New Technology Fair Silver Award file admin 2015.02.17 3899
20 Prize Winner at 20th SAMSUNG Human Tech Paper award (2013) file admin 2015.02.17 3813
19 Review article from Prof. Sang Ouk, Kim group was published in 25th anniversary of Advanced Materials. file admin 2015.02.17 3781
18 Excellent paper Award at the Optical Society of Korea. file admin 2015.02.17 3619
17 New Nanocomposite Catalyst applied for Li-O2 Batteries with improved High-capacity and Long-cycle file admin 2015.02.17 3600