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Ultrafast response humidity sensor using supramolecular nanofibre and its application in monitoring breath humidity and flow

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dc.contributor.author Mogera, Umesha
dc.contributor.author Sagade, Abhay A.
dc.contributor.author George, Subi Jacob
dc.contributor.author Kulkarni, G. U.
dc.date.accessioned 2017-02-21T06:59:34Z
dc.date.available 2017-02-21T06:59:34Z
dc.date.issued 2014
dc.identifier.citation Mogera, U; Sagade, AA; George, SJ; Kulkarni, GU, Ultrafast response humidity sensor using supramolecular nanofibre and its application in monitoring breath humidity and flow. Scientific Reports 2014, 4, 4103 http://dx.doi.org/10.1038/srep04103 en_US
dc.identifier.citation Scientific Reports en_US
dc.identifier.citation 4 en_US
dc.identifier.issn 2045-2322
dc.identifier.uri https://libjncir.jncasr.ac.in/xmlui/10572/2384
dc.description Restricted Access en_US
dc.description.abstract Measuring humidity in dynamic situations calls for highly sensitive fast response sensors. Here we report, a humidity sensor fabricated using solution processed supramolecular nanofibres as active resistive sensing material. The nanofibres are built via self-assembly of donor and acceptor molecules (coronene tetracarboxylate and dodecyl methyl viologen respectively) involved in charge transfer interactions. The conductivity of the nanofibre varied sensitively over a wide range of relative humidity (RH) with unprecedented fast response and recovery times. Based on UV-vis, XRD and AFM measurements, it is found that the stacking distance in the nanofibre decreases slightly while the charge transfer band intensity increases, all observations implying enhanced charge transfer interaction and hence the conductivity. It is demonstrated to be as a novel breath sensor which can monitor the respiration rate. Using two humidity sensors, a breath flow sensor was made which could simultaneously measure RH and flow rate of exhaled nasal breath. The integrated device was used for monitoring RH in the exhaled breath from volunteers undergoing exercise and alcohol induced dehydration. en_US
dc.description.uri http://dx.doi.org/10.1038/srep04103 en_US
dc.language.iso English en_US
dc.publisher Nature Publishing Group en_US
dc.rights @Nature Publishing Group, 2014 en_US
dc.subject Field-Effect Transistors en_US
dc.subject Pi-Conjugated Systems en_US
dc.subject Exhaled Breath en_US
dc.subject Moisture Measurement en_US
dc.subject Hydration Status en_US
dc.subject Thin-Films en_US
dc.subject Diagnosis en_US
dc.subject Electronics en_US
dc.subject Nanowire en_US
dc.subject Nanoparticles en_US
dc.title Ultrafast response humidity sensor using supramolecular nanofibre and its application in monitoring breath humidity and flow en_US
dc.type Article en_US


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