Flexible Ni/NiO_x-Based Sensor for Human Breath Detection.

ABSTRACT: We developed a simple methodology to fabricate an Ni/NiO_x-based flexible breath sensor by a single-step laser digital patterning process of solution-processed NiO_x thin-film deposited using NiO_x nanoparticle ink. Laser-induced reductive sintering phenomenon enables for the generation of three parts of Ni electrodes and two narrow NiO_x-sensing channels in between, defined on a single layer on a thin flexible polymer substrate. The Ni/NiO_x-based breath sensor efficiently detects human breath at a relatively low operating temperature (50 °C) with fast response/recovery times (1.4 s/1.7 s) and excellent repeatability. The mechanism of the gas-sensing ability enhancement of the sensor was investigated by X-ray photoelectron spectroscopy ana

SUBMITTER: Ho LD 

PROVIDER: S-EPMC8746032 | biostudies-literature | 2021 Dec

REPOSITORIES: biostudies-literature