Next Article in Journal
Performance Evaluation of Localization Accuracy for a Log-Normal Shadow Fading Wireless Sensor Network under Physical Barrier Attacks
Next Article in Special Issue
Study on the Sensing Coating of the Optical Fibre CO2 Sensor
Previous Article in Journal
Seasonal Hydrological Loading in Southern Tibet Detected by Joint Analysis of GPS and GRACE
Previous Article in Special Issue
Graphene Hybrid Materials in Gas Sensing Applications
Article Menu

Export Article

Open AccessArticle
Sensors 2015, 15(12), 30539-30544;

Single ZnO Nanowire-Based Gas Sensors to Detect Low Concentrations of Hydrogen

Centro de Nanociencias y Nanotecnología, Universidad Nacional Autónoma de México, Baja California 22800, Mexico
Centro de Investigación Científica y de Educación Superior de Ensenada, Ensenada, Baja California 22860, Mexico
Departamento de Investigación en Física, Universidad de Sonora, Hermosillo 83000, Mexico
These authors contributed equally to this work.
Author to whom correspondence should be addressed.
Academic Editor: Michael Tiemann
Received: 28 October 2015 / Revised: 25 November 2015 / Accepted: 1 December 2015 / Published: 4 December 2015
(This article belongs to the Special Issue Gas Sensors—Designs and Applications)
Full-Text   |   PDF [676 KB, uploaded 4 December 2015]   |  


Low concentrations of hazardous gases are difficult to detect with common gas sensors. Using semiconductor nanostructures as a sensor element is an alternative. Single ZnO nanowire gas sensor devices were fabricated by manipulation and connection of a single nanowire into a four-electrode aluminum probe in situ in a dual-beam scanning electron microscope-focused ion beam with a manipulator and a gas injection system in/column. The electrical response of the manufactured devices shows response times up to 29 s for a 121 ppm of H2 pulse, with a variation in the nanowire resistance appreciable at room temperature and at 373.15 K of approximately 8% and 14% respectively, showing that ZnO nanowires are good candidates to detect low concentrations of H2. View Full-Text
Keywords: nanowire; sensors; hydrogen; SEM-FIB; nano-fabrication; devices nanowire; sensors; hydrogen; SEM-FIB; nano-fabrication; devices

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).

Share & Cite This Article

MDPI and ACS Style

Cardoza-Contreras, M.N.; Romo-Herrera, J.M.; Ríos, L.A.; García-Gutiérrez, R.; Zepeda, T.A.; Contreras, O.E. Single ZnO Nanowire-Based Gas Sensors to Detect Low Concentrations of Hydrogen. Sensors 2015, 15, 30539-30544.

Show more citation formats Show less citations formats

Related Articles

Article Metrics

Article Access Statistics



[Return to top]
Sensors EISSN 1424-8220 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top