01926nas a2200193   4500008004100000022001400041245009300055210006900148260007300217300001200290490000800302520119600310653002101506653002101527653002301548653001501571100002401586856012201610       2016                        eng d  a1387-181100aLiquid exfoliation of black phosphorus nanosheets and its application as humidity sensor0 aLiquid exfoliation of black phosphorus nanosheets and its applic  aPO BOX 211, 1000 AE AMSTERDAM, NETHERLANDSbELSEVIER SCIENCE BVcMAY  a494-5030 v2253 a<p>The bulk crystal of black phosphorus was exfoliated by liquid exfoliation method for a duration of 8 h using N-Methyl-2-Pyrrolidone as the solvent. The exfoliated sample was centrifuged at different rpm such as 3000, 5000 and 10,000 to separate out the 2D black phosphorus nanosheets with different thickness and length. The as synthesized black phosphorus nanosheets collected at these rpm values were characterized with TEM, AFM, Raman spectroscopy and Vis-NIR spectroscopy. Further, we investigated the humidity sensing behaviour of the devices fabricated by using these samples. The results obtained show that the device fabricated with black phosphorus nanosheets and nanoparticles obtained by filtration of the sample collected after 10,000 rpm exhibited better performance as compared to the nanosheets collected at 3000 and 5000 rpm. The response and recovery times of devices are found to be promising and better than those of the black phosphorus gas sensor reported earlier. The present investigations open up a new avenue for further studies in improving the performance of black phosphorus nanosheets based gas sensing devices. (C) 2016 Elsevier Inc. All rights reserved.</p>10ablack phosphorus10aHumidity sensors10aLiquid exfoliation10ananosheets1 aLate, Dattatray, J.  uhttps://library.ncl.res.in/content/liquid-exfoliation-black-phosphorus-nanosheets-and-its-application-humidity-sensor01846nas a2200217   4500008004100000022001400041245010500055210006900160260000800229300001400237490000700251520109900258653002101357653002401378653002601402653001501428100002201443700001801465700001901483856012601502       2019                        eng d  a1533-488000aHydrothermal growth and humidity-dependent electrical properties of molybdenum disulphide nanosheets0 aHydrothermal growth and humiditydependent electrical properties   cAUG  a5158-51660 v193 a<p>In present investigation, we report humidity dependent electrical properties of molybdenum disulphide (MoS2) nanosheets. MoS2 nanosheets were prepared through a facile hydrothermal method with different reaction temperatures. The as-synthesized MoS2 nanosheets were characterized with XRD, SEM, TEM, and Raman spectroscopy, which confirmed successful preparation and rationality. Further, the humidity dependent electrical properties against relative humidity (RH) of these samples were carried out at room temperature. The results evinced that the sensors film fabricated with MoS2 nanosheets prepared at temperature 220 degrees C exhibited better performance compared to the nanosheets synthesized at 180 degrees C and 200 degrees C temperature. The RH sensing results exhibits highly sensitive, ultrafast response/recovery behaviour and outstanding repeatability than reported earlier. The excellent humidity sensing properties of the resultant MoS2 nanosheets was proved to be an excellent candidate for constructing ultrahigh-performance humidity sensor toward various applications.</p>10aHumidity sensors10aHydrothermal method10aMolybdenum Disulphide10ananosheets1 aShelke, Nitin, T.1 aKarle, S., C.1 aKarche, B., R.  uhttps://library.ncl.res.in/content/hydrothermal-growth-and-humidity-dependent-electrical-properties-molybdenum-disulphide