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4-Aminothiophenol Strong SERS Signal Enhancement at Electrodeposited Silver Surface

Nano-Micro Letters 2012年第3期4卷 184-188页

作者： Lenka Skantarova Andrej Orinak renata orinakova Frantisek Lofaj Department of Analytical Chemistry Faculty of SciencesComenius University Department of Physical Chemistry Faculty of ScienceP.J. Safarik University Institute of Materials Research Slovak Academy of Sciences

Strong surface enhancement Raman spectroscopy signal of 4-aminothiophenol on silver substrate prepared by controlled electrodeposition is documented in this *** factor was found to be affected not only by nanoparticle size,shape,orientation and spatial distribution,but also by interaction of Ag nanoparticles with thiol group of testing ***-assembled monolayers formation was contributed to this unique signal *** enhancement factor was established of 1.81×10^(14).

关键词： Silver 4-Aminothiophenol Surface-Enhanced Raman spectroscopy

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Hydrophobicity of Highly Ordered Nanorod Polycrystalline Nickel and Silver Surfaces

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Journal of Minerals and Materials Characterization and Engineering 2019年第5期7卷 279-293页

作者： Jan Macko Natalia Podrojkova Radim Hrdy Andrej Orinak renata orinakova Jaromir Hubalek Jaroslav Vojtus Zuzana Kostecka Roger M.Smith Department of Physical Chemistry University of P.J.Safarik in KosiceKosiceSlovakia Depatrment of Microelectronics Brno University of TechnologyBrnoCzech Republic Central European Institute of Technology Brno University of TechnologyBrnoCzech Republic Department of Architectural Engineering Institute of Architectural EngineeringKosiceSlovakia University of Veterinary Medicine and Pharmacy KosiceSlovakia Department of Chemistry Loughborough UniversityLoughboroughUK

Highly ordered nickel and silver nanorods arrays prepared by alumina template assisted electrodeposition were investigated to determine the effect of the array geometry on metal surface hydrophobicity and adhesion forces. The nanorod geometry, clustering and pinning were used to characterize surface hydrophobicity and its modulation. A contribution of metal crystallographic orientation to the surface energy was calculated. To characterize nanorod array surface properties and elucidate the source of the particle adhesion effects has been calculated. The dispersive components of surface tension?γSD?and surface polarizability ks, as surface features that markedly characterize hydrophobicity and adhesion, were calculated. The highest hydrophobicity was found for Ag nanorods with aspect ratio of 10 then Ni nanorods with aspect ratio 10. The same geometry of nanorods particles resulted in different surface hydrophobicity and it was ascribed to the orientation of Ag and Ni crystals formed on the top of nanorods. Due to high hydrophobicity nanorod array surfaces could be used as an antifouling surface in medicine to select areas on implant surface not to be colonized by cells and tissues.

关键词： Nanorods Silver Nickel Hydrophobicity Surface Energy Crystallinity

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