| 초록 |
Piezoelectric materials produce electrical charge or voltage across them when a mechanical stress or strain is applied, or vice versa. Use of such functional materials enables conversion of biomechanical energy from human activities (e.g. walking, muscle stretching, etc.) into useful electrical energy. In this talk, design and selection guidelines of optimal piezoelectric materials are presented followed by an overview of optimal device design schemes for power improvement along with optimum operating conditions. This will lead to a better understanding of piezoelectric vibration energy harvesting performance at both materials- and systems-levels, with the ultimate goal of highly efficient biomedical energy generators for flexible electronics such as wearable and implantable sensors. |
