Repository URL:
http://scholarworks.unist.ac.kr/handle/201301/21316
DOI:
10.1039/c6ra26836f
Author(s):
Jeong, Du Won, Kim, Gook Hwa, Kim, Na Yeon, Lee, Zonghoon, Jung, Sang Don, Lee, Jeong-O.
Publisher(s):
Royal Society of Chemistry (RSC), ROYAL SOC CHEMISTRY, The Royal Society of Chemistry
Tags:
Chemistry, Chemical Engineering
article description
Neural interfaces that do not damage cells or tissues are key to connecting brain functions to neural prosthetics. Here, we designed a transparent graphene/vertically aligned carbon nanotube (VACNT) electrode capable of extracellularly recording spontaneous action potentials in Sprague-Dawley rat primary cortex neurons. Graphene provided the dual function of contacting the VACNTs and visually monitoring the cell viability. The hybrid electrodes exhibited remarkably high peak-to-peak signal amplitudes (1600 μV) and low noise levels, presumably due to tight junction formation between the cells and the deformed CNTs. Spike simulation and high-resolution transmission electron microscopy (HRTEM) imaging confirmed the excellent interfacial characteristics of the cells and the transparent hybrid electrodes.