Plasmonic Smart Dust for Probing Local Chemical Reactions

CORC > 厦门大学 > 化学化工－已发表论文

	Plasmonic Smart Dust for Probing Local Chemical Reactions
	Tittl, Andreas ; Yin, Xinghui ; Giessen, Harald ; Tian, Xiang-Dong ; Tian, Zhong-Qun ; Kremers, Christian ; Chigrin, Dmitry N. ; Liu, Na ; Tian ZQ(田中群)
刊名	http://dx.doi.org/10.1021/nl4005089
	2013
关键词	ENHANCED RAMAN-SPECTROSCOPY HYDROGEN UPTAKE NANOSTRUCTURES METAMATERIALS RESOLUTION LIGHT NANOPARTICLES NANOCRYSTALS JACKKNIFE RESONANCE
英文摘要	DFG [SPP1391, FOR730, GI 269/11-1]; BMBF [13N9049, 13N10146]; Baden-Wurttemberg Stiftung (Kompetenznetz Funktionelle Nanostrukturen); MWK Baden-Wurttemberg; Sofia Kovalevskaja Award of the Alexander von Humboldt Foundation; Locally probing chemical reactions or catalytic processes on surfaces under realistic reaction conditions has remained one of the main challenges in materials science and heterogeneous catalysis. Where conventional surface interrogation techniques usually require high-vacuum conditions or ensemble average measurements, plasmonic nanoparticles excel in extreme light focusing and can produce highly confined electromagnetic fields in subwavelength volumes without the need for complex near-field microscopes. Here, we demonstrate an all-optical probing technique based on plasmonic smart dust for monitoring local chemical reactions in real time. The silica shell-isolated gold nanoparticles that form the smart dust can work as strong light concentrators and optically report subtle environmental changes at their pinning sites on the probed surface during reaction processes. As a model system, we investigate the hydrogen dissociation and subsequent uptake trajectory in palladium with both "dust-on-film" and "film-on-dust" platforms. Using time-resolved single particle measurements, we demonstrate that our technique can in situ encode chemical reaction information as optical signals for a variety of surface morphologies. The presented technique offers a unique scheme for real-time, label-free, and high-resolution probing of local reaction kinetics in a plethora of important chemical reactions on surfaces, paving the way toward the development of inexpensive and high-output reaction sensors for real-world applications.
语种	英语
出版者	AMER CHEMICAL SOC
内容类型	期刊论文
源URL	[http://dspace.xmu.edu.cn/handle/2288/89080]
专题	化学化工－已发表论文
推荐引用方式 GB/T 7714	Tittl, Andreas,Yin, Xinghui,Giessen, Harald,et al. Plasmonic Smart Dust for Probing Local Chemical Reactions[J]. http://dx.doi.org/10.1021/nl4005089,2013.
APA	Tittl, Andreas.,Yin, Xinghui.,Giessen, Harald.,Tian, Xiang-Dong.,Tian, Zhong-Qun.,...&田中群.(2013).Plasmonic Smart Dust for Probing Local Chemical Reactions.http://dx.doi.org/10.1021/nl4005089.
MLA	Tittl, Andreas,et al."Plasmonic Smart Dust for Probing Local Chemical Reactions".http://dx.doi.org/10.1021/nl4005089 (2013).