<?xml version="1.0" encoding="UTF-8"?><xml><records><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Wang, Yujia</style></author><author><style face="normal" font="default" size="100%">Chen, Jianjun</style></author><author><style face="normal" font="default" size="100%">Sun, Chengwei</style></author><author><style face="normal" font="default" size="100%">Rong, Kexiu</style></author><author><style face="normal" font="default" size="100%">Li, Hongyun</style></author><author><style face="normal" font="default" size="100%">Qihuang Gong</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">An ultrahigh-contrast and broadband on-chip refractive index sensor based on a surface-plasmon-polariton interferometer</style></title><secondary-title><style face="normal" font="default" size="100%">ANALYST</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2015</style></year></dates><number><style face="normal" font="default" size="100%">21</style></number><publisher><style face="normal" font="default" size="100%">ROYAL SOC CHEMISTRY</style></publisher><pub-location><style face="normal" font="default" size="100%">THOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLAND</style></pub-location><volume><style face="normal" font="default" size="100%">140</style></volume><pages><style face="normal" font="default" size="100%">7263-7270</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">&lt;p&gt;Using a double-slit structure fabricated on a gold film or a subwavelength (300 nm) plasmonic waveguide, high-contrast and broadband plasmonic sensors based on the interference of surface plasmon polaritons (SPPs) are experimentally demonstrated on chips. By adjusting the focused spot position of the p-polarized incident light on the double-slit structure to compensate for the propagation loss of the SPPs, the interfering SPPs from the two slits have nearly equal intensities. As a result, nearly completely destructive interference can be experimentally achieved in a broad bandwidth (&amp;gt;200 nm), revealing the robust design and fabrication of the double-slit structure. More importantly, a high sensing figure of merit (FOM*) of &amp;gt;1 x 10(4) RIU-1 (refractive index unit), which is much greater than the previous experimental results, is obtained at the destructive wavelength because of a high contrast ratio (C = 0.96). The high-contrast and broadband on-chip sensor fabricated on the subwavelength plasmonic waveguide may find important applications in the real-time sensing of particles and molecules.&lt;/p&gt;</style></abstract><work-type><style face="normal" font="default" size="100%">Article</style></work-type><custom7><style face="normal" font="default" size="100%">000362795100023</style></custom7></record></records></xml>