A novel paper-based flexible ammonia gas sensor via silver and SWNT-PABS inkjet printing

Highly sensitive, room temperature gas sensor based on polyaniline-multiwalled carbon nanotubes (PANI/MWCNTs) nanocomposite for trace-level ammonia detection

“…Despite their appealing properties of MWCNTs, poor sensitivity, lack of selectivity, very high recovery time, weak interaction with gas molecules limit their commercial applications [17][18][19]. Various attempts have been made to overcome this problem and researchers have identified that functionalization of MWCNTs with various metallic/conducting polymers can significantly improve their sensor performance [18][19].…”

“…Various attempts have been made to overcome this problem and researchers have identified that functionalization of MWCNTs with various metallic/conducting polymers can significantly improve their sensor performance [18][19].…”

“…A wide variety of materials, such as, metal oxides, (SnO 2 , TiO 2 , MoO 3 , V 2 O 5 , In 2 O 3 etc. ), polymers and carbon based materials have been used as sensing elements for various ammonia gas sensor applications [4,[9][10]19]. However, metal-oxide based sensors work efficiently at high operating temperatures typically in the range of 200-500 o C which generally lead to high power consumption and this disadvantage has hitherto impede their practical usage in many applications [9][10].…”

Nanostructured Polypyrrole-Based Ammonia and Volatile Organic Compound Sensors

“…Most flexible gas sensors are based on PANI [74,75,76]. Less attention is paid to PPy [71], eventually poly( m -aminobenzenesulfonic acid) [77], poly-diallyldimethylammonium chloride (PDDAC) [28,29] or polydiacetylene (PDA) [24]. …”

Organic Flexible Electronics

“…In addition to conventional thick and brittle conductive electrodes (e.g., Au, Cu, Ag, and indium tin oxide (ITO)), novel technologies such as semitransparent metallic mesh electrodes, poly(3,4‐ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS)‐based electrodes, paper‐based electrodes, graphene electrodes, polymer composites with conducting fillers exhibit high transparency, conductivity, and mechanical compliancy, and they empower functionalities such as self‐healing . These electrode materials are particularly suitable for fabrication on a wide variety of soft substrates, including plastics (e.g., poly(ethylene terephthalate) (PET), polyethylene‐2,6‐naphthalate (PEN), parylene), elastomers (e.g., poly(dimethylsiloxane) (PDMS), polyimide (PI)), papers, and fiber (textiles) . Additionally, stability and lifetime of flexible devices under ambient or even harsh conditions are critical to commercialization.…”