About this Abstract |
Meeting |
MS&T24: Materials Science & Technology
|
Symposium
|
Energy Materials for Sustainable Development
|
Presentation Title |
Single Carbon Fiber as Inductor and Capacitor |
Author(s) |
Satya Abhisht Nagalla, Deborah D.L. Chung |
On-Site Speaker (Planned) |
Deborah D.L. Chung |
Abstract Scope |
The first report of the inductance and dielectric behavior of a single carbon fiber is provided. Prior work addressed the corresponding 12,000-fiber tow. The fiber is unpoled and straight (7-μm diameter). Both permittivity and inductance (2 kHz) are much above those of the tow. The single-fiber inductance is higher than the value calculated based on the dimensions by up to a factor of 1,000. The measured single-fiber inductance is 2.4 mH/m, compared to 2.6 µH/m for the tow. The tow does not comprise 12,000 inductors in parallel, but approaches a single inductor, due to the fiber-fiber contacts within the tow. The high single-fiber inductance is attributed to the microstructure involving intertwined fibrils. The relative permittivity (8×107) is much above 1.2×104 for the tow and is above the values of all previously reported carbons and metals. Short circuiting decreases inductance and capacitance (discharge) and subsequent open circuiting restores them (self-charge). |