• Journal of the Korean Institute of Electrical and Electronic Material Engineers
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• v.35 no.1
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• pp.72-79
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• 2022

Piezoelectric energy harvesting technologies, which can be used to convert the electricity from the mechanical energy, have been developed in order to assist or power the wearable electronics. To realize non-toxic and biocompatible electronics, the lead-free (Ba_0.85Ca_0.15)(Ti_0.90Zr_0.10)O₃ (BCTZ) nanoparticles (NPs) are being studied with a great attention as flexible energy harvesting device. Herein, piezoelectric hybrid nanocomposites were fabricated using BCTZ NPs-embedded poly(vinylidene fluoride-trifluoroethylene) [P(VDF-TrFE)] matrix to improve the performance of flexible energy harvester. Output performance of the fabricated energy device was investigated by the well-optimized measurement system during the periodically bending and releasing motions. The generated open-circuit voltage and the short-circuit current of the piezoelectric hybrid nanocomposite-based energy harvester reached up to ~15 V and ~1.1 ㎂, respectively; moreover, the instantaneous power of 3.5 ㎼ is determined from load voltage and current at the external load of 20 MΩ. This research is expected to cultivate a new approach to high-performance wearable self-powering electronics.

• International Journal of Aeronautical and Space Sciences
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• v.11 no.4
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• pp.266-284
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• 2010

Piezoelectric materials have become the most attractive functional materials for sensors and actuators in smart structures because they can directly convert mechanical energy to electrical energy and vise versa. They have excellent electromechanical coupling characteristics and excellent frequency response. In this article, the research activities and achievements on the applications of piezoelectric materials in smart structures in China, including vibration control, noise control, energy harvesting, structural health monitoring, and hysteresis control, are introduced. Special attention is given to the introduction of semi-active vibration suppression based on a synchronized switching technique and piezoelectric fibers with metal cores for health monitoring. Such mechanisms are relatively new and possess great potential for future applications in aerospace engineering.

• 한국초전도학회:학술대회논문집
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• v.13
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• pp.89-89
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• 2003

• Proceedings of the Korean Nuclear Society Conference
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• 2001.05a
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• pp.294-294
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• 2001

• Proceedings of the Korean Magnestics Society Conference
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• 2003.12a
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• pp.291-291
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• 2003

• Proceedings of the Korean Nuclear Society Conference
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• 2004.10a
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• pp.957-958
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• 2004

• 한국초전도학회:학술대회논문집
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• v.13
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• pp.72-72
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• 2003

• Proceedings of the SAREK Conference
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• 2005.06a
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• pp.200-200
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• 2005

• Proceedings of the Korean Magnestics Society Conference
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• 2004.06a
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• pp.138-139
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• 2004

• Macromolecular Research
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• v.17 no.9
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• pp.721-724
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• 2009