About this Abstract |
Meeting |
MS&T24: Materials Science & Technology
|
Symposium
|
Energy Materials for Sustainable Development
|
Presentation Title |
Piezoinductance as an Emerging Form of Energy Conversion |
Author(s) |
Akshita Yadav, Deborah D.L. Chung |
On-Site Speaker (Planned) |
Akshita Yadav |
Abstract Scope |
Inductors store magnetic energy, as needed for transformers, generators and motors. They are conventionally in coil form. This work addresses the inductance of planar sheets. As shown for exfoliated-graphite-based flexible graphite sheet with a cellular microstructure, the in-plane inductance is 3.25 µH/m - much above 0.43 µH/m calculated based on the dimensions. The microstructure accounts for ≤94% of the measured inductance; this fraction increases with the length or width. The measured inductance increases with increasing length, but decreases with increasing width. Stress/strain affects the inductance. This is piezoinductance, which entails the conversion of mechanical energy to magnetic energy - an emerging form of energy conversion. The fractional change in in-plane inductance per unit normal strain is up to 1,000. Compression normal to the sheet at low stresses decreases the inductance, due to the squishing of the cells. A stress of 111 Pa decreases the inductance by 0.55% with partial reversibility. |