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Nirmal Prashanth Maria Joseph (니르말 프라샤츠 마리아 조세프라),Nagamalleswara Rao Alluri(올루리 나가마레스와라 라오),Abisegapriyan K.S(아비세가프리얀 K.S),Sang Jae Kim(김상재) 대한기계학회 2021 대한기계학회 춘추학술대회 Vol.2021 No.4
The barium titanate system was analyzed to improve the electrical properties through the effect of sintering and dopant substitution. The barium titanate was modified with various dopants and prepared six different compositions, and the optimized composition was analyzed with four different sintering conditions towards high electrical properties. The synthesized material XRD pattern and Raman spectrum confirm that it formed as morphotropic phase boundary with dual-phase. The morphological and elemental analyses were confirmed the random shape particles with all the elements present in the stoichiometric ratio. The material's dielectric and ferroelectric properties were analyzed. The measured maximum piezoelectric coefficient d<sub>33</sub> was 260 pC/N for the optimized 0.3Ba<sub>0.7</sub>Ca<sub>0.3</sub>TiO<sub>3</sub>-0.7BaSn<sub>0.12</sub>Ti<sub>0.88</sub>O<sub>3</sub> system. The finalized system used in the fabrication of piezoelectric nanogenerator for biomechanical motion energy conversion. The energy harvester device was fabricated in a cost-effective process. Its eco-friendly nature and the biomechanical energy conversion will partially help solve the energy crisis and the development of battery-free sensors.
A Highly Reliable Self-powered Intruder Identification System using Piezoelectric Composite Films
Venkateswaran Vivekananthan(벤카테스와란 비베카난단),Nagamalleswara Rao Alluri(나가 말레스와라 라오 알루리),Yuvasree Purusothaman(유바스리 푸루소다만),Nirmal Prashanth Maria Joseph (니르말 프라샤츠 마리아 조세프라),Arunkumar Chandrasekhar(아룬쿠마르 찬 대한기계학회 2019 대한기계학회 춘추학술대회 Vol.2019 No.2