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 Fabrication of Shape-conformable Batteries Based on 3D-printing Technology ADMINI 2019.01.04 84
Notice New Anisotropic Conductive Film for Ultra-Fine Pitch Assembly Applications ADMINI 2018.11.30 198
Notice KAIST Introduces Faster and More Powerful Aqueous Hybrid Capacitor ADMINI 2018.11.13 229
Notice Crystal size of organic semiconductors can be controlled using inorganic polymer micropillar-based solution shearing system ADMINI 2018.11.06 413
Notice Mussel-Inspired Defect Engineering Enhances the Mechanical Strength of Graphene Fibers ADMINI 2018.11.06 270
Notice Flexible Piezoelectric Acoustic Sensors for Speaker Recognition ADMINI 2018.10.04 386
Notice Spray Coated Tactile Sensor on a 3-D Surface for Robotic Skin ADMINI 2018.10.04 390
32 Professor Kim Sang Ouk of KAIST participated in editorship of GRAPHIN NEW MATERIALS file ADMINI 2017.10.23 1790
31 Pd nanowire array-based ultra-fast hydrogen gas sensor by using engineered nanofiltration of metal-organic framework file ADMINI 2017.09.27 1966
30 7 nanometer Semiconductor Manufacturing Technology with Camera Flash file ADMINI 2017.09.14 2014
29 Development of disease diagnjosis sensor using animal protein catalyst file ADMINI 2017.07.20 2128
28 Making Graphene Using Laser-induced Phase Separation file ADMINI 2016.12.07 4572
27 Hyper-stretchable elastic piezoelectric energy harvester file ADMINI 2015.04.29 9728
26 “Nature Materials” News & Views wrote by Prof. Sang Ouk Kim file admin 2015.02.17 11721
25 Academic Achievements & Related Awards file admin 2015.02.17 9232
24 Best Paper Award at 2014 Pan Pacific Microelectronic Symposium file admin 2015.02.17 9055
» The Way towards Commercialization of Highly Efficient Nanogenerator file admin 2015.02.17 9236
22 The First Demonstration of Self-powered Cardiac Pacemaker file admin 2015.02.17 8984
21 Equipment Development: “Hu:u” -New Concept Indoor Environmental Gauge file admin 2015.02.17 5703
20 The Convergence New Technology Fair Silver Award file admin 2015.02.17 3934
19 Grand Prize at the Dow Chemical Korea Award 2014 file admin 2015.02.17 3962
18 Mobile Sensor Array Platform & its Circuit Development. file admin 2015.02.17 4076
17 Intel Best Paper Award at Electronic Components and Technology Conference file admin 2015.02.17 4056
16 Excellent Paper Award at the 2014 Conference on Next Generation Lithography file admin 2015.02.17 4050
15 One of 2013 KAIST Top 10 Representative R&D Outcomes. file admin 2015.02.17 4037
14 3D Free Standing Structure Made of Graphene. file admin 2015.02.17 3945
13 Seon-Jin Choi, Jinsup Lee Prize Winner at the “9th 1nside” Edge International Thesis Competition from Samsung Electro-mechanics. file admin 2015.02.17 4004