Zobrazeno 1 - 10
of 15
pro vyhledávání: '"Hee-Jin Ko"'
Publikováno v:
Journal of the Korean Society for Precision Engineering. 39:753-758
Publikováno v:
International Journal of Precision Engineering and Manufacturing-Green Technology. 9:241-251
A hybrid energy harvester with frequency up-conversion structures is proposed. The harvester achieves a high power output by utilizing both piezoelectric and electromagnetic transduction mechanisms. The harvester comprises a flexible substrate and tw
Publikováno v:
Nano Energy. 102:107717
Autor:
Jongbaeg Kim, Dae-Sung Kwon, Hee Jin Ko, Min Ook Kim, Youngkee Eun, Seong Gu Kang, Yongkeun Oh, Wondo Kim
Publikováno v:
International Journal of Precision Engineering and Manufacturing-Green Technology. 6:691-698
In this paper, we present a flexible hybrid energy harvester for single- or multi-source energy collection. To increase harvesting power, piezoelectric and thermoelectric conversions are used simultaneously. The piezoelectric portion of the harvester
Publikováno v:
Nano Energy. 96:107062
Publikováno v:
Engineering Structures. 248:113206
In this study, a new displacement amplification damping system was proposed for maximizing the performance of a damping device, even in a stiff structural system. The proposed damping system comprises steel wire ropes, pulleys, and a viscous damper;
Publikováno v:
2017 IEEE 30th International Conference on Micro Electro Mechanical Systems (MEMS).
We developed frequency up-conversion hybrid energy harvester using two (internal and external) cantilevers. In order to increase harvesting power, the harvester utilizes piezoelectric and electromagnetic conversions simultaneously. By adopting freque
Publikováno v:
2017 IEEE 30th International Conference on Micro Electro Mechanical Systems (MEMS).
We developed a flexible triboelectric energy harvester that can generate from extremely low frequency strain inputs. The harvester consists of flexible substrate, cantilever, sagged film which is partially bonded beneath the cantilever and permanent
Publikováno v:
2013 IEEE 26th International Conference on Micro Electro Mechanical Systems (MEMS).
We have developed a highly sensitive, transparent and flexible toluene sensor using cobalt-metalloporphyrin (Co-MPP)-functionalized graphene as sensing material. The functionalization of MPP enhanced responsiveness (ΔR/Ri) over 200% compared to pris
Publikováno v:
12th International Conference on Nuclear Engineering, Volume 3.
The purpose of this paper is to study the thermal-hydraulic behaviors associated with the Loss-of-Fluid Test (LOFT) Experiment of total loss-of-feedwater accident and its recovery (Test No. L9-1/L3-3), and to perform sensitivity studies to identify p