Airflow-assisted dielectrophoresis to reduce the resistance mismatch in carbon nanotube-based temperature sensors.

ABSTRACT: The dielectrophoresis (DEP) method is used to fabricate sensor devices by assembling and aligning carbon nanotubes (CNTs) across electrode structures. The challenges of the method increase as the gap width between the electrodes increases. In this work, a novel DEP setup is proposed to reduce the resistance mismatch in manufacturing carbon nanotube-based sensors. The proposed setup utilizes hot airflow and thermal annealing to fabricate long-aligned multi-walled carbon nanotube (MWCNT) bridges across transparent electrodes with a gap width up to 75 μm. The best alignment results were obtained at airflow velocities between 1.5 m s^-1 and 2.5 m s^-1. The minimum variation in the resistance of the aligned bridges was 1.81% observed at a MWCNT concentration of 0.005 wt% and

SUBMITTER: Abdulhameed A 

PROVIDER: S-EPMC9044456 | biostudies-literature | 2021 Dec

REPOSITORIES: biostudies-literature