Reconfigurable,graphene-coated,chalcogenide nanowires with a sub-10-nm enantioselective sorting capability
作者机构：Department of Biomedical EngineeringDalian University of TechnologyDalianChina Shenzhen Key Laboratory of Laser EngineeringCollege of Optoelectronic EngineeringShenzhen UniversityShenzhenChina
出 版 物：《Microsystems & Nanoengineering》 (微系统与纳米工程（英文）)
年 卷 期：2018年第4卷第1期
页 面：337-344页
核心收录：
学科分类：081704[工学-应用化学] 07[理学] 08[工学] 0817[工学-化学工程与技术] 070303[理学-有机化学] 0703[理学-化学]
基 金：This work was supported by the National Natural Science Foundation of China(Grant No.61172059,51302026) the International Science&Technology Cooperation Program of China(Grant No.2015DFG12630) the Program for Liaoning Excellent Talents in University(Grant No.LJQ2015021) the Fund Project for Shenzhen Fundamental Research Programme,China(Grant No.JCYJ20160308092830132)
摘 要：Chiral surface plasmon polaritons(SPPs)produced by plasmonic nanowires can be used to enhance molecular spectroscopy for biosensing ***,the switchable stereoselectivity and detection of various analytes are limited by a lack of switchable,chiral *** both finite-element method simulations and analytic calculations,we present a graphene-coated chalcogenide(GCC)nanowire that produces mid-infrared,chiral *** chiral SPPs can be reversibly switched between“on(transparent)and“off(opaque)by non-volatile structural state transitions in the dielectric constants of the chalcogenide glass ***,by controlling the Fermi energy of the graphene-coating layer,the nanowire can output either non-chiral or chiral SPPs.A thermal-electric model was built to illustrate the possibility of ultrafast on/off switching of the SPPs at the terminus of the ***,we show that a selective,lateral sorting of sub-10-nm enantiomers can be achieved via the GCC *** nanoparticles with opposite handedness experience transverse forces that differ in both their sign and *** design may pave the way for plasmonic nanowire networks and tunable nanophotonic devices,which require the ultrafast switching of SPPs,and provide a possible approach for a compact,enantiopure synthesis.
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