Geometric effect on surface enhanced Raman scattering of nanoporous gold: Improving Raman scattering by tailoring ligament and nanopore ratios

Lang, X. Y.; Chen, L. Y.; Guan, P. F.; Fujita, T.; Chen, M. W.
May 2009
Applied Physics Letters;5/25/2009, Vol. 94 Issue 21, p213109
Academic Journal
We have synthesized nanoporous gold (NPG) films with a nanostructure consisting of small nanopores and large gold ligaments by the combination of chemical dealloying and electroless plating. The NPG films exhibit dramatic improvement in surface enhanced Raman scattering (SERS) in comparison with the conventional NPG. The superior SERS effect of the NPG films results from the confluence effect of enhanced local surface plasmon fields and electromagnetic coupling between ligaments, as well as the weak plasmon damping with increasing gold ligament sizes.


Related Articles

  • A solution to the fabrication and tarnishing problems of surface-enhanced Raman spectroscopy (SERS) fiber probes. Matikainen, Antti; Nuutinen, Tarmo; Vahimaa, Pasi; Honkanen, Seppo // Scientific Reports;2/13/2015, p8320 

    Surface enhanced Raman scattering (SERS) fiber probes have enormous potential in optical sensing applications. However, their widespread use has been hindered by two major obstacles: the difficulty of fabricating the required silver nanostructures on optical fibers and the tarnishing of silver,...

  • The kinetically dominated overgrowth of flower-like silver nanostructures and its application for surface-enhanced Raman scattering. Ning Zhou; Dongsheng Li; Deren Yang // Key Engineering Materials;2014, Vol. 605, p259 

    Herein flower-like silver nanostructures with different size and ratio of hexagonal close-packed (HCP) to face-centered cubic (FCC) phase were synthetized. By comparing with the results utilizing different surfactants, the growth process of Ag nanostructures has been investigated. Flower-like Ag...

  • FORMATION OF SILICON NANOSTRUCTURED SURFACE BY SELECTIVE CHEMICAL ETCHING. Gabdullin, M. T.; Ismailov, D. V.; Kalkozova, Zh. K.; Sagyndykov, A. B.; Abdullin, Kh. A. // Proceedings of the International Multidisciplinary Scientific Ge;2016, Vol. 1, p135 

    Nanostructured surface of silicon wafers with low reflectivity was obtained in a twostage process by selective chemical etching initiated by metal nanoclusters. Surfaceenhanced Raman scattering (SERS) effect was observed on silicon substrates coated with silver nanoclusters at concentrations of...

  • Self-organized synthesis of silver dendritic nanostructures via an electroless metal deposition method. Qiu, T.; Wu, X. L.; Mei, Y. F.; Chu, P. K.; Siu, G. G. // Applied Physics A: Materials Science & Processing;Sep2005, Vol. 81 Issue 4, p669 

    Unique silver dendritic nanostructures, with stems, branches, and leaves, were synthesized with self-organization via a simple electroless metal deposition method in a conventional autoclave containing aqueous HF and AgNO3 solution. Their growth mechanisms are discussed in detail on the basis of...

  • Variations in Optical Properties of Silver Nanoparticles. Application in Surface Enhanced Raman Spectroscopy. Sato, Roberto; Redón, Rocío; Vázquez, América; Flores, Ocotlán; Zanella, Rodolfo; Saniger, José // AIP Conference Proceedings;4/15/2008, Vol. 992 Issue 1, p1232 

    In the present work, an optical study of silver nanoparticles obtained by different methods is informed. These nanoparticles shown a strong plasmonic bands which depend on size and morphology. The Ag colloids were proved as enhancers of Raman spectroscopy. In all cases they were effective in...

  • Effect of Etching on the Optical, Morphological Properties of Ag Thin Films for SERS Active Substrates. Rajesh, Desapogu; Mahendar, M.; Sunandana, C. S. // Journal of Chemistry;2013, p1 

    Structural, optical, and morphological properties of Ag thin films before and after etching were investigated by using X-ray diffraction, UV-Vis spectrophotometer, and field emission scanning electron microscopy (FESEM). The HNO3 roughened Ag thin films exhibit excellent enhancement features and...

  • EDM electrode manufacturing using RP combining electroless plating with electroforming. Hsu, C. Y.; Chen, D. Y.; Lai, M. Y.; Tzou, G. J. // International Journal of Advanced Manufacturing Technology;Oct2008, Vol. 38 Issue 9/10, p915 

    This study investigates an effective method for manufacturing electrical discharge machining (EDM) electrodes using the rapid prototyping (RP) system based on electroless plating (nickel plating) and electroforming (copper). This method was shown to finish the development of die-sinking...

  • Large area 50 nm period grating by multiple nanoimprint lithography and spatial frequency doubling. Cui, Bo; Yu, Zhaoning; Ge, Haixiong; Chou, Stephen Y. // Applied Physics Letters;1/22/2007, Vol. 90 Issue 4, p043118 

    The authors have developed an approach to fabricate large area 50 nm period gratings (22 nm linewidth) with low cost. The method used a fabrication cycle twice, each combining nanoimprint lithography with a spatial frequency doubling based on electroless plating, lift-off, and reactive ion...

  • Electroless Nickel Myths BUSTED. Durkin, Brad // Products Finishing;Nov2008, Vol. 73 Issue 2, p30 

    The article attempts to clarify some of the myths surrounding electroless nickel-phosphorus (ENP) technology. One myth states that best success in ENP application is realized by using an updated specification document. Another myth is that the hardest EN deposit will always provide the best wear...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics