Fast-Response MoS 2 -Based Humidity Sensor Braced by SiO 2 Microsphere Layers

In this letter, a MoS2-based humidity sensor braced by SiO2 microsphere layers with rapid response was developed. The results demonstrated that the humidity sensor can exhibit a subsecond response. A mechanism based on the morphology and structure of the sensing film was proposed to explain the rapid response behavior of humidity sensors. In addition, the effect of film thickness on response time was discussed. This letter demonstrated that the MoS2-based humidity sensor braced by SiO2 microspheres is suitable for the miniature drip infusion rate detection device.

[1]  Dermot Diamond,et al.  Humidity sensors based on polyaniline nanofibres , 2010 .

[2]  P. Li,et al.  Fabrication and characterization of an ultrasensitive humidity sensor based on metal oxide/graphene hybrid nanocomposite , 2016 .

[3]  G. Casalbore-Miceli,et al.  Humidity sensors based on polymer solid electrolytes: investigation on the capacitive and resistive devices construction , 2001 .

[4]  C. Kolb,et al.  Spectroscopic water vapor sensor for rapid response measurements of humidity in the troposphere , 2002 .

[5]  Dongzhi Zhang,et al.  Facile Fabrication of MoS2-Modified SnO2 Hybrid Nanocomposite for Ultrasensitive Humidity Sensing. , 2016, ACS applied materials & interfaces.

[6]  Jakob Kibsgaard,et al.  Engineering the surface structure of MoS2 to preferentially expose active edge sites for electrocatalysis. , 2012, Nature materials.

[7]  Thomas F. Jaramillo,et al.  Identification of Active Edge Sites for Electrochemical H2 Evolution from MoS2 Nanocatalysts , 2007, Science.

[8]  H. Choi,et al.  Controlled exfoliation of molybdenum disulfide for developing thin film humidity sensor , 2014 .

[9]  M. J. Brett,et al.  Response time of nanostructured relative humidity sensors , 2009 .

[10]  F. Wang,et al.  Preparation of SiO2/(PMMA/Fe3O4) nanoparticles using linolenic acid as crosslink agent for nucleic acid detection using chemiluminescent method. , 2011, Journal of nanoscience and nanotechnology.

[11]  S. Kozhukharov,et al.  Humidity sensing elements based on cerium doped titania-silica thin films prepared via a sol–gel method , 2015 .

[12]  Claude Pellet,et al.  Comparison of three humidity sensors for a pulmonary function diagnosis microsystem , 2002 .

[13]  S. Fonash,et al.  Biomedical/analytical applications of deposited nanostructured Si films , 2005 .

[14]  Jani Kivioja,et al.  Ultrafast graphene oxide humidity sensors. , 2013, ACS nano.

[15]  Dongzhi Zhang,et al.  Layer-by-Layer Self-Assembly of Zinc Oxide/Graphene Oxide Hybrid Toward Ultrasensitive Humidity Sensing , 2016, IEEE Electron Device Letters.

[16]  Dongzhi Zhang,et al.  Humidity-sensing properties of chemically reduced graphene oxide/polymer nanocomposite film sensor based on layer-by-layer nano self-assembly , 2014 .

[17]  Dongzhi Zhang,et al.  Ultrahigh performance humidity sensor based on layer-by-layer self-assembly of graphene oxide/polyelectrolyte nanocomposite film , 2014 .

[18]  Yiwei Chen,et al.  The combinations of hollow MoS2 micro@nano-spheres: one-step synthesis, excellent photocatalytic and humidity sensing properties , 2014 .

[19]  Chunzhong Li,et al.  Multifunctional Fe3O4@Ag/SiO2/Au core-shell microspheres as a novel SERS-activity label via long-range plasmon coupling. , 2013, Langmuir : the ACS journal of surfaces and colloids.

[20]  M.J.A.M. van Putten,et al.  Multisensor microsystem for pulmonary function diagnostics , 2002 .

[21]  R. K. Kotnala,et al.  Microstructure-dependent humidity sensitivity of porous MgFe2O4–CeO2 ceramic , 2007 .

[22]  T. Tatara,et al.  An Apnea Monitor Using a Rapid-Response Hygrometer , 2004, Journal of Clinical Monitoring.

[23]  T. Wang,et al.  Fast humidity sensors based on CeO2 nanowires , 2007 .

[24]  Jinhuai Liu,et al.  Amino functionalized mesoporous silica microspheres with perpendicularly aligned mesopore channels for electrochemical detection of trace 2,4,6-trinitrotoluene , 2010 .

[25]  X. Lou,et al.  Defect‐Rich MoS2 Ultrathin Nanosheets with Additional Active Edge Sites for Enhanced Electrocatalytic Hydrogen Evolution , 2013, Advanced materials.

[26]  Charlie Tsai,et al.  Tuning the MoS₂ edge-site activity for hydrogen evolution via support interactions. , 2014, Nano letters.

[27]  Nivedita Daimiwal,et al.  Wireless Transfusion Supervision and analysis using embedded system , 2010, 2010 International Conference on Bioinformatics and Biomedical Technology.

[28]  M. Dresselhaus,et al.  Ultrahigh humidity sensitivity of graphene oxide , 2013, Scientific Reports.

[29]  A. Radenović,et al.  Single-layer MoS2 transistors. , 2011, Nature nanotechnology.

[30]  Antoni Nowakowski,et al.  Properties of a polyethyleneimine-based sensor for measuring medium and high relative humidity , 2005 .