Near field electrospinning of nanowires for multi-modal hydrogen sensing

Danny Wong; Allen Sandwell; Simon S. Park

doi:10.1117/12.2514113

27 March 2019 Near field electrospinning of nanowires for multi-modal hydrogen sensing

Danny Wong, Allen Sandwell, Simon S. Park

Proceedings Volume 10969, Nano-, Bio-, Info-Tech Sensors and 3D Systems III; 109690K (2019) https://doi.org/10.1117/12.2514113
Event: SPIE Smart Structures + Nondestructive Evaluation, 2019, Denver, Colorado, United States

Abstract

Hydrogen gas is a common byproduct in industrial and chemical processes. It is also frequently used in transportation applications such as fuel cell vehicles. It has no smell and no taste, but it may pose immediate safety risks because it is combustible in air. Multi-modal hydrogen sensors are developed by depositing nanofibers on quartz tuning forks (QTF). Near field electrospinning (NFES) was used to produce flexible, semi-conductive nanofibers that can be integrated into electronic systems as environmental gas sensors. The electrospinning parameters, especially tip-to-collector distance, were optimized to increase sensor performance. Treated multi-walled carbon nanotubes, camphorsulfonic acid doped polyaniline and platinum nanoparticles were used as the sensing materials with polyethylene oxide being used as an electrospinning guide. Intense pulsed light and sputter coating were used to maximize adhesion of the fibers onto the devices. The QTF sensor combines mechanical and electrochemical sensing methodologies. Changes in the resonance frequency were used to determine gas adsorption. Changes in the electrical resistance were used to determine the gas properties. As a result, the sensors were selective to hydrogen versus other gases and vapors including methane, hexane, toluene, ammonia, ethanol and carbon dioxide. Furthermore, the sensors can detect ppm levels of hydrogen even in the presence of high humidity.

Conference Presentation

Citation Download Citation

Danny Wong, Allen Sandwell, and Simon S. Park "Near field electrospinning of nanowires for multi-modal hydrogen sensing", Proc. SPIE 10969, Nano-, Bio-, Info-Tech Sensors and 3D Systems III, 109690K (27 March 2019); https://doi.org/10.1117/12.2514113

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available