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<HTML>
<HEAD>
<META http-equiv="Content-Type" content="text/html; charset=UTF-8">
<meta content="text/html; charset=utf-8" http-equiv="Content-Type">
<style type="text/css">
.xn-newslines .xn-distributor{
display:none;
}
.xn-newslines .xn-dateline{
display:none;
}
/* /\/\/\/\/\/\/\/\/ CLIENT-SPECIFIC STYLES /\/\/\/\/\/\/\/\/ */
#outlook a{padding: 0;} /* Force Outlook to provide a "view in browser" message */
.ReadMsgBody{width: 100%;} .ExternalClass{width: 100%;} /* Force Hotmail to display emails at full width */
.ExternalClass, .ExternalClass p, .ExternalClass span, .ExternalClass font, .ExternalClass td, .ExternalClass div {line-height: 100%;} /* Force Hotmail to display normal line spacing */
body, table, td, p, a, li, blockquote{-webkit-text-size-adjust: 100%; -ms-text-size-adjust: 100%;} /* Prevent WebKit and Windows mobile changing default text sizes */
table, td{mso-table-lspace: 0pt; mso-table-rspace: 0pt;} /* Remove spacing between tables in Outlook 2007 and up */
img{-ms-interpolation-mode: bicubic;} /* Allow smoother rendering of resized image in Internet Explorer */
/* /\/\/\/\/\/\/\/\/ RESET STYLES /\/\/\/\/\/\/\/\/ */
body{margin: 0; padding: 0;}
img{border: 0; height: auto; line-height: 100%; outline: none; text-decoration: none;}
table{border-collapse: collapse !important;}
body, #bodyTable, #bodyCell{height: 100% !important; margin: 0; padding: 0; width: 100% !important;}
/* /\/\/\/\/\/\/\/\/ TEMPLATE STYLES /\/\/\/\/\/\/\/\/ */
/* ========== Page Styles ========== */
#bodyCell{padding: 20px;}
#templateContainer{
width: 600px;
background-color: #ffffff;
}
/**
* @tip Set the background color and top border for your email. You may want to choose colors that match your company's branding.
* @theme page
*/
body, #bodyTable{
background-color: #DEE0E2;
}
/**
* @tip Set the background color and top border for your email. You may want to choose colors that match your company's branding.
* @theme page
*/
#bodyCell{
border-top: 4px solid #BBBBBB;
}
/**
* @tip Set the border for your email.
*/
#templateContainer{
border: 1px solid #BBBBBB;
}
/**
* @tip Set the styling for all first-level headings in your emails. These should be the largest of your headings.
* @style heading 1
*/
h1{
color: #404040 !important;
display: block;
font-family: Helvetica;
font-size: 26px;
font-style: normal;
font-weight: bold;
line-height: 100%;
letter-spacing: normal;
margin-top: 0;
margin-right: 0;
margin-bottom: 10px;
margin-left: 0;
text-align: left;
}
/**
* @tip Set the styling for all second-level headings in your emails.
* @style heading 2
*/
h2{
color: #404040 !important;
display: block;
font-family: Helvetica;
font-size: 20px;
font-style: normal;
font-weight: bold;
line-height: 100%;
letter-spacing: normal;
margin-top: 0;
margin-right: 0;
margin-bottom: 10px;
margin-left: 0;
text-align: left;
}
/**
* @tip Set the styling for all third-level headings in your emails.
* @style heading 3
*/
h3{
color: #3d98c6 !important;
display: block;
font-family: Helvetica;
font-size: 16px;
font-weight: normal;
line-height: 100%;
letter-spacing: normal;
margin-top: 0;
margin-right: 0;
margin-bottom: 10px;
margin-left: 0;
text-align: left;
}
/**
* @tip Set the styling for all fourth-level headings in your emails. These should be the smallest of your headings.
* @style heading 4
*/
h4{
color: #808080 !important;
display: block;
font-family: Helvetica;
font-size: 14px;
font-weight: normal;
line-height: 100%;
letter-spacing: normal;
margin-top: 0;
margin-right: 0;
margin-bottom: 10px;
margin-left: 0;
text-align: left;
}
h4.subtitle {
color: #808080 !important;
font-size: 14px;
}
/* ========== Header Styles ========== */
/**
* @tip Set the background color and bottom border for your email's preheader area.
* @theme header
*/
#templatePreheader{
background-color: #F4F4F4;
border-bottom: 1px solid #CCCCCC;
}
/**
* @tip Set the styling for your email's preheader text. Choose a size and color that is easy to read.
*/
.preheaderContent{
color: #808080;
font-family: Helvetica;
font-size: 10px;
line-height: 125%;
text-align: left;
}
/**
* @tip Set the styling for your email's preheader links. Choose a color that helps them stand out from your text.
*/
.preheaderContent a:link, .preheaderContent a:visited, /* Yahoo! Mail Override */ .preheaderContent a .yshortcuts /* Yahoo! Mail Override */{
color: #606060;
font-weight: normal;
text-decoration: underline;
}
/**
* @tip Set the background color and borders for your email's header area.
* @theme header
*/
#templateHeader{
background-color: #F4F4F4;
border-top: 1px solid #FFFFFF;
border-bottom: 1px solid #CCCCCC;
}
/**
* @tip Set the styling for your email's header text. Choose a size and color that is easy to read.
*/
.headerContent{
color: #505050;
font-family: Helvetica;
font-size: 20px;
font-weight: bold;
line-height: 100%;
padding-top: 0;
padding-right: 0;
padding-bottom: 0;
padding-left: 0;
text-align: left;
vertical-align: middle;
}
/**
* @tip Set the styling for your email's header links. Choose a color that helps them stand out from your text.
*/
.headerContent a:link, .headerContent a:visited, /* Yahoo! Mail Override */ .headerContent a .yshortcuts /* Yahoo! Mail Override */{
color: #3d98c6;
font-weight: normal;
text-decoration: underline;
}
#headerImage{
height: auto;
max-width: 600px;
}
#socialShare img {
margin-right: 3px;
}
/* ========== Body Styles ========== */
/**
* @tip Set the background color and borders for your email's body area.
*/
#templateBody{
background-color: #FFFFFF;
border-top: 1px solid #FFFFFF;
/*border-bottom: 1px solid #CCCCCC;*/
}
/**
* @tip Set the styling for your email's main content text. Choose a size and color that is easy to read.
* @theme main
*/
.bodyContent{
color: #505050;
font-family: Helvetica;
font-size: 16px;
line-height: 150%;
padding-top: 20px;
padding-right: 20px;
padding-bottom: 20px;
padding-left: 20px;
text-align: left;
}
/**
* @tip Set the styling for your email's main content links. Choose a color that helps them stand out from your text.
*/
.bodyContent a:link, .bodyContent a:visited, /* Yahoo! Mail Override */ .bodyContent a .yshortcuts /* Yahoo! Mail Override */{
color: #3d98c6;
font-weight: normal;
text-decoration: underline;
}
.bodyContent img{
display: inline;
height: auto;
max-width: 560px;
}
/**
* @tip Set the background color and border for your email's data table.
*/
.templateDataTable{
background-color: #FFFFFF;
}
.templateDataTable a:link {
text-decoration: none;
color: #3d98c6;
}
/**
* @tip Set the styling for your email's data table text. Choose a size and color that is easy to read.
*/
.dataTableHeading{
/*background-color: #E7F1FC;*/
color: #336699;
font-family: Helvetica;
font-size: 14px;
font-weight: bold;
line-height: 150%;
text-align: left;
}
/**
* @tip Set the styling for your email's data table links. Choose a color that helps them stand out from your text.
*/
.dataTableHeading a:link, .dataTableHeading a:visited, /* Yahoo! Mail Override */ .dataTableHeading a .yshortcuts /* Yahoo! Mail Override */{
color: #FFFFFF;
font-weight: bold;
}
/**
* @tip Set the styling for your email's data table text. Choose a size and color that is easy to read.
*/
.dataTableContent{
border-top: 1px solid #DDDDDD;
border-bottom: 0;
color: #404040;
font-family: Helvetica;
font-size: 12px;
line-height: 150%;
text-align: left;
}
/**
* @tip Set the styling for your email's data table links. Choose a color that helps them stand out from your text.
*/
.dataTableContent a:link, .dataTableContent a:visited, /* Yahoo! Mail Override */ .dataTableContent a .yshortcuts /* Yahoo! Mail Override */{
color: #3d98c6;
font-weight: bold;
}
/* ========== Column Styles ========== */
.templateColumnContainer{width: 200px;}
/**
* @tip Set the background color and borders for your email's column area.
*/
#templateColumns{
background-color: #F4F4F4;
border-top: 1px solid #FFFFFF;
border-bottom: 1px solid #CCCCCC;
}
/**
* @tip Set the styling for your email's left column content text. Choose a size and color that is easy to read.
*/
.leftColumnContent{
color: #505050;
font-family: Helvetica;
font-size: 14px;
line-height: 150%;
padding-top: 0;
padding-right: 20px;
padding-bottom: 20px;
padding-left: 20px;
text-align: left;
}
/**
* @tip Set the styling for your email's left column content links. Choose a color that helps them stand out from your text.
*/
.leftColumnContent a:link, .leftColumnContent a:visited, /* Yahoo! Mail Override */ .leftColumnContent a .yshortcuts /* Yahoo! Mail Override */{
color: #3d98c6;
font-weight: normal;
text-decoration: underline;
}
/**
* @tip Set the styling for your email's center column content text. Choose a size and color that is easy to read.
*/
.centerColumnContent{
color: #505050;
font-family: Helvetica;
font-size: 14px;
line-height: 150%;
padding-top: 0;
padding-right: 20px;
padding-bottom: 20px;
padding-left: 20px;
text-align: left;
}
/**
* @tip Set the styling for your email's center column content links. Choose a color that helps them stand out from your text.
*/
.centerColumnContent a:link, .centerColumnContent a:visited, /* Yahoo! Mail Override */ .centerColumnContent a .yshortcuts /* Yahoo! Mail Override */{
color: #3d98c6;
font-weight: normal;
text-decoration: underline;
}
/**
* @tip Set the styling for your email's right column content text. Choose a size and color that is easy to read.
*/
.rightColumnContent{
color: #505050;
font-family: Helvetica;
font-size: 14px;
line-height: 150%;
padding-top: 0;
padding-right: 20px;
padding-bottom: 20px;
padding-left: 20px;
text-align: left;
}
/**
* @tip Set the styling for your email's right column content links. Choose a color that helps them stand out from your text.
*/
.rightColumnContent a:link, .rightColumnContent a:visited, /* Yahoo! Mail Override */ .rightColumnContent a .yshortcuts /* Yahoo! Mail Override */{
color: #3d98c6;
font-weight: normal;
text-decoration: underline;
}
.leftColumnContent img, .rightColumnContent img{
display: inline;
height: auto;
max-width: 260px;
}
/* ========== Footer Styles ========== */
/**
* @tip Set the background color and borders for your email's footer area.
* @theme footer
*/
#templateFooter{
background-color: #F4F4F4;
border-top: 1px solid #FFFFFF;
}
/**
* @tip Set the styling for your email's footer text. Choose a size and color that is easy to read.
* @theme footer
*/
.footerContent{
color: #808080;
font-family: Helvetica;
font-size: 10px;
line-height: 150%;
padding-top: 20px;
padding-right: 20px;
padding-bottom: 20px;
padding-left: 20px;
text-align: left;
}
.footerContent.social, .footerContent.social h4 {
text-align: center;
}
.footerContent.social a {
margin: 0 10px;
}
/**
* @tip Set the styling for your email's footer links. Choose a color that helps them stand out from your text.
*/
.footerContent a:link, .footerContent a:visited, /* Yahoo! Mail Override */ .footerContent a .yshortcuts, .footerContent a span /* Yahoo! Mail Override */{
color: #606060;
font-weight: normal;
text-decoration: underline;
}
/* /\/\/\/\/\/\/\/\/ MOBILE STYLES /\/\/\/\/\/\/\/\/ */
@media only screen and (max-width: 480px){
/* /\/\/\/\/\/\/ CLIENT-SPECIFIC MOBILE STYLES /\/\/\/\/\/\/ */
body, table, td, p, a, li, blockquote{-webkit-text-size-adjust: none !important;} /* Prevent Webkit platforms from changing default text sizes */
body{width: 100% !important; min-width: 100% !important;} /* Prevent iOS Mail from adding padding to the body */
/* /\/\/\/\/\/\/ MOBILE RESET STYLES /\/\/\/\/\/\/ */
#bodyCell{padding: 10px !important;}
/* /\/\/\/\/\/\/ MOBILE TEMPLATE STYLES /\/\/\/\/\/\/ */
/* ======== Page Styles ======== */
/**
* @tip Make the template fluid for portrait or landscape view adaptability. If a fluid layout doesn't work for you, set the width to 300px instead.
*/
#templateContainer{
max-width: 600px !important;
width: 100% !important;
}
/**
* @tip Make the first-level headings larger in size for better readability on small screens.
*/
h1{
font-size: 24px !important;
line-height: 100% !important;
}
/**
* @tip Make the second-level headings larger in size for better readability on small screens.
*/
h2{
font-size: 20px !important;
line-height: 100% !important;
}
/**
* @tip Make the third-level headings larger in size for better readability on small screens.
*/
h3{
font-size: 18px !important;
line-height: 100% !important;
}
/**
* @tip Make the fourth-level headings larger in size for better readability on small screens.
*/
h4{
font-size: 16px !important;
line-height: 100% !important;
}
/* ======== Header Styles ======== */
#templatePreheader{display: none !important;} /* Hide the template preheader to save space */
/**
* @tip Make the main header image fluid for portrait or landscape view adaptability, and set the image's original width as the max-width. If a fluid setting doesn't work, set the image width to half its original size instead.
*/
#headerImage{
height: auto !important;
max-width: 600px !important;
width: 100% !important;
}
/**
* @tip Make the header content text larger in size for better readability on small screens. We recommend a font size of at least 16px.
*/
.headerContent{
font-size: 20px !important;
line-height: 125% !important;
}
/* ======== Body Styles ======== */
/**
* @tip Make the body content text larger in size for better readability on small screens. We recommend a font size of at least 16px.
*/
.bodyContent{
font-size: 18px !important;
line-height: 125% !important;
}
.templateDataTableContainer {
background-color: #ffffff;
}
/**
* @tip Set the background color and border for your email's data table.
*/
.templateDataTable{
background-color: #FFFFFF;
border: 1px solid #DDDDDD;
}
/**
* @tip Set the styling for your email's data table text. Choose a size and color that is easy to read.
*/
.dataTableHeading{
background-color: #D8E2EA;
color: #336699;
font-family: Helvetica;
font-size: 14px;
font-weight: bold;
line-height: 150%;
text-align: left;
}
/**
* @tip Set the styling for your email's data table links. Choose a color that helps them stand out from your text.
*/
.dataTableHeading a:link, .dataTableHeading a:visited, /* Yahoo! Mail Override */ .dataTableHeading a .yshortcuts /* Yahoo! Mail Override */{
color: #3d98c6;
font-weight: bold;
}
/**
* @tip Set the styling for your email's data table text. Choose a size and color that is easy to read.
*/
.dataTableContent{
border-top: 1px solid #DDDDDD;
border-bottom: 0;
color: #202020;
font-family: Helvetica;
font-size: 12px;
font-weight: bold;
line-height: 150%;
text-align: left;
}
/**
* @tip Set the styling for your email's data table links. Choose a color that helps them stand out from your text.
*/
.dataTableContent a:link, .dataTableContent a:visited, /* Yahoo! Mail Override */ .dataTableContent a .yshortcuts /* Yahoo! Mail Override */{
color: #3d98c6;
font-weight: bold;
}
/* ======== Column Styles ======== */
.templateColumnContainer{display: block !important; width: 100% !important;}
/**
* @tip Make the column image fluid for portrait or landscape view adaptability, and set the image's original width as the max-width. If a fluid setting doesn't work, set the image width to half its original size instead.
*/
.columnImage{
height: auto !important;
max-width: 480px !important;
width: 100% !important;
}
/**
* @tip Make the left column content text larger in size for better readability on small screens. We recommend a font size of at least 16px.
*/
.leftColumnContent{
font-size: 16px !important;
line-height: 125% !important;
}
/**
* @tip Make the center column content text larger in size for better readability on small screens. We recommend a font size of at least 16px.
*/
.centerColumnContent{
font-size: 16px !important;
line-height: 125% !important;
}
/**
* @tip Make the right column content text larger in size for better readability on small screens. We recommend a font size of at least 16px.
*/
.rightColumnContent{
font-size: 16px !important;
line-height: 125% !important;
}
/* ======== Footer Styles ======== */
/**
* @tip Make the body content text larger in size for better readability on small screens.
*/
.footerContent{
font-size: 14px !important;
line-height: 115% !important;
}
.footerContent a {
display:block !important;
} /* Place footer social and utility links on their own lines, for easier access */
.footerContent.social a {
display: inline-block !important;
}
}
</style>
</HEAD>
<body leftmargin="0" marginheight="0" marginwidth="0" offset="0" style="-webkit-text-size-adjust: 100%;-ms-text-size-adjust: 100%;margin: 0;padding: 0;background-color: #DEE0E2;height: 100% !important;width: 100% !important;" topmargin="0">
<center>
<table align="center" border="0" cellpadding="0" cellspacing="0" height="100%" id="bodyTable" style="-webkit-text-size-adjust: 100%;-ms-text-size-adjust: 100%;mso-table-lspace: 0pt;mso-table-rspace: 0pt;margin: 0;padding: 0;background-color: #DEE0E2;border-collapse: collapse !important;height: 100% !important;width: 100% !important;" width="100%">
<tr>
<td align="center" id="bodyCell" style="-webkit-text-size-adjust: 100%;-ms-text-size-adjust: 100%;mso-table-lspace: 0pt;mso-table-rspace: 0pt;margin: 0;padding: 20px;border-top: 4px solid #BBBBBB;height: 100% !important;width: 100% !important;" valign="top">
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<tr>
<td class="headerContent" style="-webkit-text-size-adjust: 100%;-ms-text-size-adjust: 100%;mso-table-lspace: 0pt;mso-table-rspace: 0pt;color: #505050;font-family: Helvetica;font-size: 20px;font-weight: bold;line-height: 100%;padding-top: 0;padding-right: 0;padding-bottom: 0;padding-left: 0;text-align: left;vertical-align: middle;" valign="top"><img id="headerImage" src="http://content.prnewswire.com/designimages/prnj_email_header-1.png" style="max-width: 600px;-ms-interpolation-mode: bicubic;border: 0;height: auto;line-height: 100%;outline: none;text-decoration: none;"></td>
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<tr>
<td align="center" style="-webkit-text-size-adjust: 100%;-ms-text-size-adjust: 100%;mso-table-lspace: 0pt;mso-table-rspace: 0pt;" valign="top">
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<tr>
<td class="bodyContent" style="-webkit-text-size-adjust: 100%;-ms-text-size-adjust: 100%;mso-table-lspace: 0pt;mso-table-rspace: 0pt;color: #505050;font-family: Helvetica;font-size: 16px;line-height: 150%;padding-top: 20px;padding-right: 20px;padding-bottom: 20px;padding-left: 20px;text-align: left;" valign="top">
<h1 style="display: block;font-family: Helvetica;font-size: 26px;font-style: normal;font-weight: bold;line-height: 100%;letter-spacing: normal;margin-top: 0;margin-right: 0;margin-bottom: 10px;margin-left: 0;text-align: left;color: #404040 !important;">Tech Profile</h1>
<h4 style="display: block;font-family: Helvetica;font-size: 14px;font-weight: normal;line-height: 100%;letter-spacing: normal;margin-top: 0;margin-right: 0;margin-bottom: 10px;margin-left: 0;text-align: left;color: #808080 !important;">Username: <a href="https://prnmedia.prnewswire.com/profile/?action=editProfile" style="-webkit-text-size-adjust: 100%;-ms-text-size-adjust: 100%;color: #3d98c6;font-weight: normal;text-decoration: underline;" target="_blank">aronschatz / edit profile</a>
</h4>
</td>
</tr>
</table>
</td>
</tr>
<tr>
<td align="center" class="bodyContent" style="-webkit-text-size-adjust: 100%;-ms-text-size-adjust: 100%;mso-table-lspace: 0pt;mso-table-rspace: 0pt;" valign="top">
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<tr>
<div xmlns="http://www.w3.org/1999/xhtml" xmlns:xn="http://www.xmlnews.org/ns/" class="xn-newslines">
<h1 class="xn-hedline">PolyU Develops Novel Semiconductor Nanofiber with Superb Charge Conductivity</h1>
<p class="xn-distributor">PR Newswire</p>
<p class="xn-dateline">HONG KONG, April 13, 2017</p>
</div>
<div class="xn-content" xmlns="http://www.w3.org/1999/xhtml" xmlns:xn="http://www.xmlnews.org/ns/">
<p>
<span class="xn-location">HONG KONG</span>, <span class="xn-chron">April 13, 2017</span> /PRNewswire/ --</p>
<p>The Department of Mechanical Engineering of The Hong Kong Polytechnic University (PolyU) has developed a novel technology of embedding highly conductive nanostructure into semi-conductor nanofiber. The novel composite so produced has superb charge conductivity, and can therefore be widely applied, especially in environmental arena.</p>
<p> (Photo: <a href="http://mma.prnewswire.com/media/489977/Nanofiber_Prof_Leung.jpg" rel="nofollow">http://mma.prnewswire.com/media/489977/Nanofiber_Prof_Leung.jpg</a> )<br>
</p>
<p>The innovation was awarded the Gold Medal with Congratulations of the Jury at the 45th International Exhibition of Inventions of <span class="xn-location">Geneva</span>, held on 29 March to 2 April this year.</p>
<p>
<b>Issues to Address</b> </p>
<p>Semiconductor made into nanofiber of diameter as small as 60nm (less than 1/1,000 of a human hair) have been widely used in modern daily life photonic devices (such as solar cells, photocatalyst for cleaning the environment), and non-photonic devices (such as chemical-biological sensor, lithium battery). However, electrons and holes generated by light or energy in semiconductor would readily recombine, thus reduce the current or device effectiveness. Such nature has limited the further development and applications of semiconductor nanofibers.</p>
<p>The novel technology developed by the research team led by Ir. Professor <span class="xn-person">Wallace Leung</span>, Chair Professor of Innovative Products and Technologies of the Department, have overcome such limitation. Applying electrospinning, the team succeeds in inserting highly conductive nano-structure (such as carbon nanotubes, graphene) into semiconductor nanofiber (such as Titanium Dioxide (TiO<sub>2</sub> ). The novel nano-composite so produced thus provides a dedicated super-highway for electron transport, eliminating the problem of electron-hole recombination.</p>
<p>Amidst the potentially wide applications of the innovation in many spectrum, Professor Leung's team has initially embarked on research of applying the novel nano-composite in two environmental aspects: solar cells, and photocatalysts for cleaning air.</p>
<p>
<b>Enhanced s</b><b>olar cell</b><b> efficiency</b> </p>
<p>The latest generation of solar cells (e.g. dye sensitized solar cell (DSSC), perovskite solar cell) are promising clean and renewable energy sources. Yet, for more wide applications, there are still much room for further enhancing their power conversion efficiency and producing in more cost-efficient ways.</p>
<p>By applying PolyU's novel technology, carbon nanotube/graphene is embedded into the TiO<sub>2</sub> component of DSSC and perovskite solar cell, boosting an increase of energy conversion from 40-66%. Compared to commercially available multi-crystalline silicon solar cell common in the market, with current price at <span class="xn-money">US$0.25</span> <span class="xn-money">(HK$1.94)</span>/kWh, the cost of DSSC with carbon nanotube embedded is 12-32% higher (<span class="xn-money">HK$2.18 - 2.56</span>); while perovskite solar cell embedded with graphene is 28-40% lower (<span class="xn-money">HK$1.17 - 1.40</span>).</p>
<p>Given the superb charge conductivity of the novel semiconductor nanofiber, there is great potential for prompt development of more efficient solar cells, and at lower cost, than the silicon cells.</p>
<p>
<b>Enhanced p</b><b>hotocatalyst</b><b> performance in cleaning the air</b> </p>
<p>TiO<sub>2</sub> is the most commonly used photocatalyst material in commercially available air-purifying or disinfection devices in the market. However, TiO<sub>2</sub> can only be activated by ultraviolet light (i.e. about 6% of solar energy), thus limiting its wider application as it is less effective in indoor environment. It is also relatively ineffective in converting nitric oxide (NO) into nitrogen dioxide (NO<sub>2</sub>), at a rate of less than 5%.</p>
<p>By applying PolyU's novel technology, graphene roll is embedded into TZB composite (which mainly compose of TiO<sub>2</sub>). The novel semiconductor nanofiber so produced has superb conductivity, which provides a graphene superhighway for electrons to transport more quickly to oxide the absorbed pollutants. The technology also significantly increases the novel nano-fiber's surface exposed for light absorption and trapping harmful molecules.</p>
<p>Such novel semiconductor nanofiber can convert about 90% of NO to NO<sub>2</sub>, a 35% increase compared to composite without graphene. If compared to high-standard TiO<sub>2</sub> nano-particles commonly available in the market, the conversion rate is even 10 times more, yet 10 times more cost-efficient.</p>
<p>
<b>Readily available for wide applications</b> </p>
<p>Given the wide uses of semiconductor nanofiber now and in the future, the PolyU groundbreaking technology that develops semiconductor nanofiber with superb charge conductivity has great potential for further development for different applications.</p>
<p>Besides in solar cells and photocatalysts, other obvious examples of making use of such novel technology include the development of biological-chemical sensors with enhanced sensitivity and sensing speed, and lithium batteries with lower impedance and increased storage.</p>
<p>Media Contact:<br>
Ir. Professor <span class="xn-person">Wallace Leung</span>
<br>
Chair Professor of Innovative Products and Technologies<br>
Department of Mechanical Engineering<br>
<a href="mailto:wallace.leung@polyu.edu.hk" rel="nofollow">wallace.leung@polyu.edu.hk</a>
<br>
</p>
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/**
* @tip Set the background color and top border for your email. You may want to choose colors that match your company's branding.
* @theme page
*/
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/**
* @tip Set the background color and top border for your email. You may want to choose colors that match your company's branding.
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/**
* @tip Set the border for your email.
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* @tip Set the styling for all first-level headings in your emails. These should be the largest of your headings.
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* @tip Set the styling for all second-level headings in your emails.
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* @tip Set the styling for all fourth-level headings in your emails. These should be the smallest of your headings.
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font-size: 14px;
font-weight: normal;
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text-align: left;
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h4.subtitle {
color: #808080 !important;
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* @tip Set the background color and bottom border for your email's preheader area.
* @theme header
*/
#templatePreheader{
background-color: #F4F4F4;
border-bottom: 1px solid #CCCCCC;
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/**
* @tip Set the styling for your email's preheader text. Choose a size and color that is easy to read.
*/
.preheaderContent{
color: #808080;
font-family: Helvetica;
font-size: 10px;
line-height: 125%;
text-align: left;
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/**
* @tip Set the styling for your email's preheader links. Choose a color that helps them stand out from your text.
*/
.preheaderContent a:link, .preheaderContent a:visited, /* Yahoo! Mail Override */ .preheaderContent a .yshortcuts /* Yahoo! Mail Override */{
color: #606060;
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/**
* @tip Set the background color and borders for your email's header area.
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#templateHeader{
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font-weight: bold;
line-height: 100%;
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padding-bottom: 0;
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/**
* @tip Set the styling for your email's header links. Choose a color that helps them stand out from your text.
*/
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#socialShare img {
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/**
* @tip Set the styling for your email's main content text. Choose a size and color that is easy to read.
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*/
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padding-bottom: 20px;
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/**
* @tip Set the styling for your email's main content links. Choose a color that helps them stand out from your text.
*/
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font-weight: normal;
text-decoration: underline;
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.bodyContent img{
display: inline;
height: auto;
max-width: 560px;
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* @tip Set the background color and border for your email's data table.
*/
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background-color: #FFFFFF;
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.templateDataTable a:link {
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color: #3d98c6;
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* @tip Set the styling for your email's data table text. Choose a size and color that is easy to read.
*/
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font-family: Helvetica;
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/**
* @tip Set the styling for your email's data table links. Choose a color that helps them stand out from your text.
*/
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/**
* @tip Set the styling for your email's data table text. Choose a size and color that is easy to read.
*/
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border-bottom: 0;
color: #404040;
font-family: Helvetica;
font-size: 12px;
line-height: 150%;
text-align: left;
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/**
* @tip Set the styling for your email's data table links. Choose a color that helps them stand out from your text.
*/
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color: #3d98c6;
font-weight: bold;
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* @tip Set the background color and borders for your email's column area.
*/
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background-color: #F4F4F4;
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border-bottom: 1px solid #CCCCCC;
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* @tip Set the styling for your email's left column content text. Choose a size and color that is easy to read.
*/
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font-family: Helvetica;
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line-height: 150%;
padding-top: 0;
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/**
* @tip Set the styling for your email's left column content links. Choose a color that helps them stand out from your text.
*/
.leftColumnContent a:link, .leftColumnContent a:visited, /* Yahoo! Mail Override */ .leftColumnContent a .yshortcuts /* Yahoo! Mail Override */{
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/**
* @tip Set the styling for your email's center column content text. Choose a size and color that is easy to read.
*/
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font-size: 14px;
line-height: 150%;
padding-top: 0;
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text-align: left;
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/**
* @tip Set the styling for your email's center column content links. Choose a color that helps them stand out from your text.
*/
.centerColumnContent a:link, .centerColumnContent a:visited, /* Yahoo! Mail Override */ .centerColumnContent a .yshortcuts /* Yahoo! Mail Override */{
color: #3d98c6;
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/**
* @tip Set the styling for your email's right column content text. Choose a size and color that is easy to read.
*/
.rightColumnContent{
color: #505050;
font-family: Helvetica;
font-size: 14px;
line-height: 150%;
padding-top: 0;
padding-right: 20px;
padding-bottom: 20px;
padding-left: 20px;
text-align: left;
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/**
* @tip Set the styling for your email's right column content links. Choose a color that helps them stand out from your text.
*/
.rightColumnContent a:link, .rightColumnContent a:visited, /* Yahoo! Mail Override */ .rightColumnContent a .yshortcuts /* Yahoo! Mail Override */{
color: #3d98c6;
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.leftColumnContent img, .rightColumnContent img{
display: inline;
height: auto;
max-width: 260px;
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/* ========== Footer Styles ========== */
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* @tip Set the background color and borders for your email's footer area.
* @theme footer
*/
#templateFooter{
background-color: #F4F4F4;
border-top: 1px solid #FFFFFF;
}
/**
* @tip Set the styling for your email's footer text. Choose a size and color that is easy to read.
* @theme footer
*/
.footerContent{
color: #808080;
font-family: Helvetica;
font-size: 10px;
line-height: 150%;
padding-top: 20px;
padding-right: 20px;
padding-bottom: 20px;
padding-left: 20px;
text-align: left;
}
.footerContent.social, .footerContent.social h4 {
text-align: center;
}
.footerContent.social a {
margin: 0 10px;
}
/**
* @tip Set the styling for your email's footer links. Choose a color that helps them stand out from your text.
*/
.footerContent a:link, .footerContent a:visited, /* Yahoo! Mail Override */ .footerContent a .yshortcuts, .footerContent a span /* Yahoo! Mail Override */{
color: #606060;
font-weight: normal;
text-decoration: underline;
}
/* /\/\/\/\/\/\/\/\/ MOBILE STYLES /\/\/\/\/\/\/\/\/ */
@media only screen and (max-width: 480px){
/* /\/\/\/\/\/\/ CLIENT-SPECIFIC MOBILE STYLES /\/\/\/\/\/\/ */
body, table, td, p, a, li, blockquote{-webkit-text-size-adjust: none !important;} /* Prevent Webkit platforms from changing default text sizes */
body{width: 100% !important; min-width: 100% !important;} /* Prevent iOS Mail from adding padding to the body */
/* /\/\/\/\/\/\/ MOBILE RESET STYLES /\/\/\/\/\/\/ */
#bodyCell{padding: 10px !important;}
/* /\/\/\/\/\/\/ MOBILE TEMPLATE STYLES /\/\/\/\/\/\/ */
/* ======== Page Styles ======== */
/**
* @tip Make the template fluid for portrait or landscape view adaptability. If a fluid layout doesn't work for you, set the width to 300px instead.
*/
#templateContainer{
max-width: 600px !important;
width: 100% !important;
}
/**
* @tip Make the first-level headings larger in size for better readability on small screens.
*/
h1{
font-size: 24px !important;
line-height: 100% !important;
}
/**
* @tip Make the second-level headings larger in size for better readability on small screens.
*/
h2{
font-size: 20px !important;
line-height: 100% !important;
}
/**
* @tip Make the third-level headings larger in size for better readability on small screens.
*/
h3{
font-size: 18px !important;
line-height: 100% !important;
}
/**
* @tip Make the fourth-level headings larger in size for better readability on small screens.
*/
h4{
font-size: 16px !important;
line-height: 100% !important;
}
/* ======== Header Styles ======== */
#templatePreheader{display: none !important;} /* Hide the template preheader to save space */
/**
* @tip Make the main header image fluid for portrait or landscape view adaptability, and set the image's original width as the max-width. If a fluid setting doesn't work, set the image width to half its original size instead.
*/
#headerImage{
height: auto !important;
max-width: 600px !important;
width: 100% !important;
}
/**
* @tip Make the header content text larger in size for better readability on small screens. We recommend a font size of at least 16px.
*/
.headerContent{
font-size: 20px !important;
line-height: 125% !important;
}
/* ======== Body Styles ======== */
/**
* @tip Make the body content text larger in size for better readability on small screens. We recommend a font size of at least 16px.
*/
.bodyContent{
font-size: 18px !important;
line-height: 125% !important;
}
.templateDataTableContainer {
background-color: #ffffff;
}
/**
* @tip Set the background color and border for your email's data table.
*/
.templateDataTable{
background-color: #FFFFFF;
border: 1px solid #DDDDDD;
}
/**
* @tip Set the styling for your email's data table text. Choose a size and color that is easy to read.
*/
.dataTableHeading{
background-color: #D8E2EA;
color: #336699;
font-family: Helvetica;
font-size: 14px;
font-weight: bold;
line-height: 150%;
text-align: left;
}
/**
* @tip Set the styling for your email's data table links. Choose a color that helps them stand out from your text.
*/
.dataTableHeading a:link, .dataTableHeading a:visited, /* Yahoo! Mail Override */ .dataTableHeading a .yshortcuts /* Yahoo! Mail Override */{
color: #3d98c6;
font-weight: bold;
}
/**
* @tip Set the styling for your email's data table text. Choose a size and color that is easy to read.
*/
.dataTableContent{
border-top: 1px solid #DDDDDD;
border-bottom: 0;
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<h1 class="xn-hedline">PolyU Develops Novel Semiconductor Nanofiber with Superb Charge Conductivity</h1>
<p class="xn-distributor">PR Newswire</p>
<p class="xn-dateline">HONG KONG, April 13, 2017</p>
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<div class="xn-content" xmlns="http://www.w3.org/1999/xhtml" xmlns:xn="http://www.xmlnews.org/ns/">
<p>
<span class="xn-location">HONG KONG</span>, <span class="xn-chron">April 13, 2017</span> /PRNewswire/ --</p>
<p>The Department of Mechanical Engineering of The Hong Kong Polytechnic University (PolyU) has developed a novel technology of embedding highly conductive nanostructure into semi-conductor nanofiber. The novel composite so produced has superb charge conductivity, and can therefore be widely applied, especially in environmental arena.</p>
<p> (Photo: <a href="http://mma.prnewswire.com/media/489977/Nanofiber_Prof_Leung.jpg" rel="nofollow">http://mma.prnewswire.com/media/489977/Nanofiber_Prof_Leung.jpg</a> )<br>
</p>
<p>The innovation was awarded the Gold Medal with Congratulations of the Jury at the 45th International Exhibition of Inventions of <span class="xn-location">Geneva</span>, held on 29 March to 2 April this year.</p>
<p>
<b>Issues to Address</b> </p>
<p>Semiconductor made into nanofiber of diameter as small as 60nm (less than 1/1,000 of a human hair) have been widely used in modern daily life photonic devices (such as solar cells, photocatalyst for cleaning the environment), and non-photonic devices (such as chemical-biological sensor, lithium battery). However, electrons and holes generated by light or energy in semiconductor would readily recombine, thus reduce the current or device effectiveness. Such nature has limited the further development and applications of semiconductor nanofibers.</p>
<p>The novel technology developed by the research team led by Ir. Professor <span class="xn-person">Wallace Leung</span>, Chair Professor of Innovative Products and Technologies of the Department, have overcome such limitation. Applying electrospinning, the team succeeds in inserting highly conductive nano-structure (such as carbon nanotubes, graphene) into semiconductor nanofiber (such as Titanium Dioxide (TiO<sub>2</sub> ). The novel nano-composite so produced thus provides a dedicated super-highway for electron transport, eliminating the problem of electron-hole recombination.</p>
<p>Amidst the potentially wide applications of the innovation in many spectrum, Professor Leung's team has initially embarked on research of applying the novel nano-composite in two environmental aspects: solar cells, and photocatalysts for cleaning air.</p>
<p>
<b>Enhanced s</b><b>olar cell</b><b> efficiency</b> </p>
<p>The latest generation of solar cells (e.g. dye sensitized solar cell (DSSC), perovskite solar cell) are promising clean and renewable energy sources. Yet, for more wide applications, there are still much room for further enhancing their power conversion efficiency and producing in more cost-efficient ways.</p>
<p>By applying PolyU's novel technology, carbon nanotube/graphene is embedded into the TiO<sub>2</sub> component of DSSC and perovskite solar cell, boosting an increase of energy conversion from 40-66%. Compared to commercially available multi-crystalline silicon solar cell common in the market, with current price at <span class="xn-money">US$0.25</span> <span class="xn-money">(HK$1.94)</span>/kWh, the cost of DSSC with carbon nanotube embedded is 12-32% higher (<span class="xn-money">HK$2.18 - 2.56</span>); while perovskite solar cell embedded with graphene is 28-40% lower (<span class="xn-money">HK$1.17 - 1.40</span>).</p>
<p>Given the superb charge conductivity of the novel semiconductor nanofiber, there is great potential for prompt development of more efficient solar cells, and at lower cost, than the silicon cells.</p>
<p>
<b>Enhanced p</b><b>hotocatalyst</b><b> performance in cleaning the air</b> </p>
<p>TiO<sub>2</sub> is the most commonly used photocatalyst material in commercially available air-purifying or disinfection devices in the market. However, TiO<sub>2</sub> can only be activated by ultraviolet light (i.e. about 6% of solar energy), thus limiting its wider application as it is less effective in indoor environment. It is also relatively ineffective in converting nitric oxide (NO) into nitrogen dioxide (NO<sub>2</sub>), at a rate of less than 5%.</p>
<p>By applying PolyU's novel technology, graphene roll is embedded into TZB composite (which mainly compose of TiO<sub>2</sub>). The novel semiconductor nanofiber so produced has superb conductivity, which provides a graphene superhighway for electrons to transport more quickly to oxide the absorbed pollutants. The technology also significantly increases the novel nano-fiber's surface exposed for light absorption and trapping harmful molecules.</p>
<p>Such novel semiconductor nanofiber can convert about 90% of NO to NO<sub>2</sub>, a 35% increase compared to composite without graphene. If compared to high-standard TiO<sub>2</sub> nano-particles commonly available in the market, the conversion rate is even 10 times more, yet 10 times more cost-efficient.</p>
<p>
<b>Readily available for wide applications</b> </p>
<p>Given the wide uses of semiconductor nanofiber now and in the future, the PolyU groundbreaking technology that develops semiconductor nanofiber with superb charge conductivity has great potential for further development for different applications.</p>
<p>Besides in solar cells and photocatalysts, other obvious examples of making use of such novel technology include the development of biological-chemical sensors with enhanced sensitivity and sensing speed, and lithium batteries with lower impedance and increased storage.</p>
<p>Media Contact:<br>
Ir. Professor <span class="xn-person">Wallace Leung</span>
<br>
Chair Professor of Innovative Products and Technologies<br>
Department of Mechanical Engineering<br>
<a href="mailto:wallace.leung@polyu.edu.hk" rel="nofollow">wallace.leung@polyu.edu.hk</a>
<br>
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