Resistive humidity sensitivity of arrayed multi-wall carbon nanotube nests grown on arrayed nanoporous silicon pillars

The Novel CO sensing material CoOOH–WO3 with Au and SWCNT performance enhancement

“…Carbon nanotube (CNT) is useful and active material used in various chemical material detections [18][19][20][21][22][23][24], and it possesses many good properties for chemical sensors. Multi-wall CNT (MWCNT) was used as a humidity sensor because of its good sorption ability [20].…”

“…Carbon nanotube (CNT) is useful and active material used in various chemical material detections [18][19][20][21][22][23][24], and it possesses many good properties for chemical sensors. Multi-wall CNT (MWCNT) was used as a humidity sensor because of its good sorption ability [20]. The existence of interactions between the adsorption gases and single wall CNT (SWCNT) makes it possible for SWCNT to play an important role in gas sensing materials [21][22][23].…”

Synthesis and characterization carboxyl functionalized Multi-Walled Carbon Nanotubes (MWCNT-COOH) and NH2 functionalized Multi-Walled Carbon Nanotubes (MWCNTNH2)

“…The use of these nano sensors also varies, some nano sensors are used for the detection of microbial contaminants [18], gas detection such as hydrogen [1,19], air humidity [7,9,20], formalin [2,16,21,22,23].Nanomaterials have a high surface area so that if used as a sensor will have a better response.However, the nanotubes in the CNT material have not been able to respond well if they have not been activated by breaking the carbon bonds on the tube wall and attached to the amino group as material functionalization so it is easy to interact with the gas. Although thismaterial provide safe detection of gas, it still have some limitations and challenges such as low relative resistance changes and selectivity, long-term instability and so on.…”

Optical Humidity Sensor Based on Tapered Fiber with Multi-walled Carbon Nanotubes Slurry

“…The exceptional optical properties monitored in single-walled CNTs (SWCNTs) and multi-walled CNTs (MWCNTs) are the van Hove singularities [9]- [10]. In addition to their electronic properties, CNTs also retain an array of unprecedented structural and [12]- [13]. The realization of the CNTs as humidity sensor is due to drastic changes in the electrical conductivity upon the adsorption of water molecules.…”