Title :
Fabrication of a Hybrid Carbon-Based Composite for Flexible Heating Element With a Zero Temperature Coefficient of Resistance
Author :
Kunmo Chu ; Sung-Hoon Park
Author_Institution :
Samsung Adv. Inst. of Technol., Samsung Adv. Inst. of Technol. Ltd., Suwon, South Korea
Abstract :
We report on a hybrid carbon-based composite for zero temperature coefficient of resistance (TCR) heating element, forming edge-island type composite comprised of carbon nanotubes (CNTs) and carbon blacks (CBs) with a polydimethylsiloxane. The island-shaped CB composite is placed between a copper connection electrode and the CNT composite, acting as both a buffer and distribution layer against current flow for a zero TCR. The degree of control over this zero TCR was characterized by examining the thickness ratio between the CNT and CB layers. The optimized edge-island composite structure showed a constant normalized resistance (with <;3% deviation) to 200 °C with a rapid heating property. This edge-island composite structure could be widely used for heat-related or sensor applications, solving safety, and accuracy issues.
Keywords :
buffer layers; carbon nanotubes; composite materials; copper; electrodes; heating elements; island structure; CNT composite; TCR; buffer layer; carbon black; carbon nanotube; copper connection electrode; current flow; distribution layer; edge-island-shaped CB composite; flexible heating element; hybrid carbon-based composite fabrication; normalized resistance; polydimethylsiloxane; thickness ratio; zero temperature coefficient of resistance; Carbon nanotubes; Electrodes; Resistance; Resistance heating; Temperature; Temperature sensors; Carbon black; Carbon nanotube; Electric heating; Nano-composite; Zero temperature coefficient of resistance; carbon black; electric heating; nano-composite; zero temperature coefficient of resistance;
Journal_Title :
Electron Device Letters, IEEE
DOI :
10.1109/LED.2014.2374698
