Abstract
Graphene and carbon nanotube (CNT)-based gas/vapor sensors have gained much traction for numerous applications over the last decade due to their excellent sensing performance at ambient conditions. Inkjet printing various forms of graphene (reduced graphene oxide or modified graphene) and CNT (single-wall nanotubes (SWNTs) or multiwall nanotubes (MWNTs)) nanomaterials allows fabrication onto flexible substrates which enable gas sensing applications in flexible electronics. This review focuses on their recent developments and provides an overview of the state-of-the-art in inkjet printing of graphene and CNT based sensors targeting gases, such as NO2, Cl2, CO2, NH3, and organic vapors. Moreover, this review presents the current enhancements and challenges of printing CNT and graphene-based gas/vapor sensors, the role of defects, and advanced printing techniques using these nanomaterials, while highlighting challenges in reliability and reproducibility. The future potential and outlook of this rapidly growing research are analyzed as well.
Highlights
Detection of gases and harmful vapors has become increasingly important in many fields, such as environmental pollution monitoring [1,2,3], national defense [4,5], industrial emission monitoring [1,6,7], and medical diagnosis [5,8]
To our knowledge, there have not been any reports on Aerosol jet printing (AJP)-printed graphene- or carbon nanotube (CNT)-based gas sensors far
CNTand graphene-based gas sensors demonstrate great potential for nextinnumerable applications gas experiment sensors ranging from environmental monitoring, wearable products, molecules
Summary
Detection of gases and harmful vapors has become increasingly important in many fields, such as environmental pollution monitoring [1,2,3], national defense [4,5], industrial emission monitoring [1,6,7], and medical diagnosis [5,8]. Carbon nanotubes (CNTs) are another widely used material for gas sensing due to their unique electrical and mechanical properties [41] They possess a very high surface area to volume ratio and very high sensitivity towards target analytes at room temperature [7,42]. There is a great deal of research reported on inkjet printing using CNT and graphene for gas/vapor sensor applications, which we will further discuss.
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
