{"id":2412,"date":"2021-10-15T15:25:12","date_gmt":"2021-10-15T07:25:12","guid":{"rendered":"https:\/\/orisys.hkust.edu.hk\/?p=2412"},"modified":"2022-02-14T16:01:43","modified_gmt":"2022-02-14T08:01:43","slug":"a-paper-a-vertically-aligned-multi-wall-carbon-nanotube-based-humidity-sensor-with-fast-response-low-hysteresis-and-high-repeatability-is-published","status":"publish","type":"post","link":"https:\/\/orisys.hkust.edu.hk\/?p=2412","title":{"rendered":"Paper &#8221;A Vertically Aligned Multi-Wall Carbon Nanotube based Humidity Sensor&#8221; is published !"},"content":{"rendered":"<p>[vc_section][vc_row][vc_column][vc_column_text]<\/p>\n<h3 style=\"text-align: left;\"><span dir=\"ltr\">We present a vertically aligned multiwall carbon nanotube (VA<\/span><span dir=\"ltr\">&#8211;<\/span><span dir=\"ltr\">MWCNT) based humidity sensor with a low<\/span><span dir=\"ltr\">&#8211;<\/span><span dir=\"ltr\">cost and simple fabrication method compatible with mass production. The VA<\/span><span dir=\"ltr\">&#8211;<\/span><span dir=\"ltr\">MWCNT is well alig<\/span><span dir=\"ltr\">ned and possesses <\/span><span dir=\"ltr\">an interconnect topography. <\/span><\/h3>\n<h3 style=\"text-align: left;\"><span dir=\"ltr\">Initially, the VA<\/span><span dir=\"ltr\">&#8211;<\/span><span dir=\"ltr\">MWCNT showed superhydrophobic characteristics, which are not suitable <\/span><span dir=\"ltr\">for humidity sensing. Therefore, to protect the topography of the material and make the surface more hydrophilic, a low<\/span><span dir=\"ltr\">&#8211;<\/span><span dir=\"ltr\">cost and easy handling treatment method was adop<\/span><span dir=\"ltr\">ted with O<\/span><span dir=\"ltr\">2<\/span><span dir=\"ltr\">plasma surface functionalization. <\/span><\/h3>\n<h3 style=\"text-align: left;\"><span dir=\"ltr\">The fabricated device <\/span><span dir=\"ltr\">showed good linearity at the range of 40%RH ~ 90%RH, low hysteresis (H=1.5%RH), fast response (3.3s), high stability <\/span><span dir=\"ltr\">(C<\/span><span dir=\"ltr\">v<\/span><span dir=\"ltr\">&lt; 0.04%), and high repeatability<\/span><span dir=\"ltr\">(<\/span><span dir=\"ltr\">R<\/span><span dir=\"ltr\">r_max<\/span><span dir=\"ltr\">&lt;<\/span><span dir=\"ltr\">0.6%<\/span><span dir=\"ltr\">), demonstrating exce<\/span><span dir=\"ltr\">llent performance in both static and dynamic <\/span><span dir=\"ltr\">measurement. <\/span><\/h3>\n<h3 style=\"text-align: left;\"><span dir=\"ltr\">The high performance and low<\/span><span dir=\"ltr\">&#8211;<\/span><span dir=\"ltr\">cost fabrication <\/span><span dir=\"ltr\">methods<\/span><span dir=\"ltr\">make the VA<\/span><span dir=\"ltr\">&#8211;<\/span><span dir=\"ltr\">MWCNT based sensor a promising <\/span><span dir=\"ltr\">candidate for the application of humidity sensing. Moreover, benefiting from the simple fabrication p<\/span><span dir=\"ltr\">rocess, it can be <\/span><span dir=\"ltr\">easily extended to resistive sensing fusion with the integration of the temperature sensor and flow sensor for more <\/span><span dir=\"ltr\">complex applications.<\/span><\/h3>\n<p>More information:<\/p>\n<p>Published website link: <a href=\"https:\/\/ieeexplore.ieee.org\/stamp\/stamp.jsp?arnumber=9566774\">https:\/\/ieeexplore.ieee.org\/stamp\/stamp.jsp?arnumber=9566774<\/a>[\/vc_column_text][\/vc_column][\/vc_row][\/vc_section]<\/p>\n","protected":false},"excerpt":{"rendered":"<p>[vc_section][vc_row][vc_column][vc_column_text] We present a vertically aligned multiwall carbon nanotube (VA&#8211;MWCNT) based humidity sensor with a low&#8211;cost and simple fabrication method compatible with mass production. The VA&#8211;MWCNT is well aligned and possesses an interconnect topography. Initially, the VA&#8211;MWCNT showed superhydrophobic characteristics, which are not suitable for humidity sensing. Therefore, to protect the topography of the material [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":2433,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[2],"tags":[],"_links":{"self":[{"href":"https:\/\/orisys.hkust.edu.hk\/index.php?rest_route=\/wp\/v2\/posts\/2412"}],"collection":[{"href":"https:\/\/orisys.hkust.edu.hk\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/orisys.hkust.edu.hk\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/orisys.hkust.edu.hk\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/orisys.hkust.edu.hk\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=2412"}],"version-history":[{"count":5,"href":"https:\/\/orisys.hkust.edu.hk\/index.php?rest_route=\/wp\/v2\/posts\/2412\/revisions"}],"predecessor-version":[{"id":2431,"href":"https:\/\/orisys.hkust.edu.hk\/index.php?rest_route=\/wp\/v2\/posts\/2412\/revisions\/2431"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/orisys.hkust.edu.hk\/index.php?rest_route=\/wp\/v2\/media\/2433"}],"wp:attachment":[{"href":"https:\/\/orisys.hkust.edu.hk\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=2412"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/orisys.hkust.edu.hk\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=2412"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/orisys.hkust.edu.hk\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=2412"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}