Journal ArticleDOI
Enhanced surface plasmon resonance on a smooth silver film with a seed growth layer.
Hong Liu,Bing Wang,Eunice S. P. Leong,Ping Yang,Yun Zong,Guangyuan Si,Jinghua Teng,Stefan A. Maier +7 more
TLDR
The results show that Ni acts as a roughness-diminishing growth layer for the Ag film while at the same time maintaining and enhancing the plasmonic properties of the combined structures, pointing toward its use for low-loss plAsmonic devices and optical metamaterials applications.Abstract:
This paper reports an effective method to enhance the surface plasmon resonance (SPR) on Ag films by using a thin Ni seed layer assisted deposition. Ag films with a thickness of about 50 nm were deposited by electron beam evaporation above an ultrathin Ni seed layer of approximately 2 nm on both silicon and quartz substrates. The root-mean-square (rms) surface roughness and the correlation length have been reduced from >4 nm and 28 nm for a pure Ag film to approximately 1.3 and 19 nm for Ag/Ni films, respectively. Both experimental and simulation results show that the Ag/Ni films exhibit an enhanced SPR over the pure Ag film with a narrower full width at half-maximum. Ag films with a Ge seed layer have also been prepared under the same conditions. The surface roughness can be reduced to less than 0.7 nm, but narrowing of the SPR curve is not observed due to increased absorptive damping in the Ge seed layer. Our results show that Ni acts as a roughness-diminishing growth layer for the Ag film while at the same time maintaining and enhancing the plasmonic properties of the combined structures. This points toward its use for low-loss plasmonic devices and optical metamaterials applications.read more
Citations
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Journal ArticleDOI
Plasmonic photocatalysts: harvesting visible light with noble metal nanoparticles
TL;DR: This article surveys various plasmonic photocatalysts that have been prepared and characterized in recent years and describes the metal-semiconductor composite photocatalysis, in which noble metal nanoparticles are deposited on the surface of polar semiconductor or insulator particles.
Journal ArticleDOI
Transparent Conducting Silver Nanowire Networks
TL;DR: The insights given in this paper provide the key guidelines for designing high-transmittance and low-resistance nanowire electrodes for optoelectronic devices, including thin-film solar cells and the general design principles to use the nanowires also as a light trapping scheme.
Journal ArticleDOI
Hyperbolic metamaterials: fundamentals and applications
TL;DR: A unified view of practical approaches to achievehyperbolic dispersion using thin film and nanowire structures is presented and the concepts central to the theory of hyperbolic media as well as nanofabrication and characterization details essential to experimentalists are introduced.
Journal ArticleDOI
Surface plasmon resonance-based biosensors: From the development of different SPR structures to novel surface functionalization strategies
Edy Wijaya,Cedric Lenaerts,S. Maricot,Juriy Hastanin,Serge Habraken,Jean-Pierre Vilcot,Rabah Boukherroub,Sabine Szunerits +7 more
TL;DR: In this paper, the performance of various surface plasmon resonance (SPR) structures and detection schemes focusing on propagating surface plasmons generated in planar structures is reviewed.
Journal ArticleDOI
Giant photoluminescence enhancement in tungsten-diselenide-gold plasmonic hybrid structures.
Zhuo Wang,Zhaogang Dong,Yinghong Gu,Yung Huang Chang,Lei Zhang,Lain-Jong Li,Weijie Zhao,Goki Eda,Wenjing Zhang,Wenjing Zhang,Gustavo Grinblat,Stefan A. Maier,Joel K. W. Yang,Joel K. W. Yang,Cheng-Wei Qiu,Andrew T. S. Wee +15 more
TL;DR: This work demonstrates the feasibility of giant photoluminescence enhancement in WSe2 with judiciously designed plasmonic nanostructures and paves a way towards the implementation of plAsmon-enhanced transition metal dichalcogenide photodetectors, sensors and emitters.
References
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Journal ArticleDOI
Three-dimensional optical metamaterial with a negative refractive index
Jason Valentine,Shuang Zhang,Thomas Zentgraf,Erick Ulin-Avila,Dentcho A. Genov,Guy Bartal,Xiang Zhang,Xiang Zhang +7 more
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