caa a22 4500 463215540 CHVBK 20180405153155.0 cr unu---uuuuu 170326e20070601xx s 000 0 eng 10.1007/s00339-007-3901-4 doi (NATIONALLICENCE)springer-10.1007/s00339-007-3901-4 Porous silicon templates for electrodeposition of nanostructures [Elektronische Daten] [S. Aravamudhan, K. Luongo, P. Poddar, H. Srikanth, S. Bhansali] We report the fabrication and characterization of porous silicon templates for electrodeposition of high aspect ratio one-dimensional metallic nanostructures (nanowires/nanoparticles) in them. Even though nanostructures/nanowires in the past have been fabricated in alumina, polymer or silica templates, the advantages of this approach are the possibility for seamless integration of nanostructures with other silicon components, and silicon based sensors because of better physical and electrical interconnection between the nanostructure and the silicon substrate. In this work, fabrication and characterization of nanowires/nanostructures such as single-segment Ni-Fe and Au and two-segment Ni-Fe/Au electrodeposited in the porous silicon template are presented. The templates with ordered and controlled nanometer-sized pores, 40nm and 290nm in diameter, were created through porous Si etching. The morphology, composition and structural characteristics of the template and of the single-segment Ni-Fe and Au and two-segment Ni-Fe/Au nanostructures of diameter 275±25nm, length up to 100μm and pitch of 1μm were analyzed using scanning electron microscopy and X-ray diffraction techniques. The micrographs confirm that the plating parameters have a strong influence on morphology and composition of the structures. Further, the Ni-Fe images show the formation of both vertical and branched nanowires along with nanoparticles, from breakage/discontinuous growth of nanowires. Ni-Fe nanostructures were further analyzed for temperature-dependent magnetization and magnetization vs. magnetic field measurements using a commercial physical property measurement system. They reveal no magnetic anisotropy of the nanostructures probably due to a balance between ‘reduced' shape anisotropy from branched and rough pore surfaces and magnetocrystalline anisotropy. Springer-Verlag, 2007 Aravamudhan S. Department of Electrical Engineering, Nanomaterials and Nanomanufacturing Research Center, University of South Florida, 4202 E Fowler Ave, ENB 118, 33620, Tampa, FL, USA aut Luongo K. Department of Electrical Engineering, Nanomaterials and Nanomanufacturing Research Center, University of South Florida, 4202 E Fowler Ave, ENB 118, 33620, Tampa, FL, USA aut Poddar P. Materials Physics Laboratory, Department of Physics, University of South Florida, 4202 E Fowler Ave, ENB 118, 33620, Tampa, FL, USA aut Srikanth H. Materials Physics Laboratory, Department of Physics, University of South Florida, 4202 E Fowler Ave, ENB 118, 33620, Tampa, FL, USA aut Bhansali S. Department of Electrical Engineering, Nanomaterials and Nanomanufacturing Research Center, University of South Florida, 4202 E Fowler Ave, ENB 118, 33620, Tampa, FL, USA aut Applied Physics A Springer-Verlag 87/4(2007-06-01), 773-780 0947-8396 87:4<773 2007 87 339 https://doi.org/10.1007/s00339-007-3901-4 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s00339-007-3901-4 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Aravamudhan S. Department of Electrical Engineering, Nanomaterials and Nanomanufacturing Research Center, University of South Florida, 4202 E Fowler Ave, ENB 118, 33620, Tampa, FL, USA aut NATIONALLICENCE 700 1- Luongo K. Department of Electrical Engineering, Nanomaterials and Nanomanufacturing Research Center, University of South Florida, 4202 E Fowler Ave, ENB 118, 33620, Tampa, FL, USA aut NATIONALLICENCE 700 1- Poddar P. Materials Physics Laboratory, Department of Physics, University of South Florida, 4202 E Fowler Ave, ENB 118, 33620, Tampa, FL, USA aut NATIONALLICENCE 700 1- Srikanth H. Materials Physics Laboratory, Department of Physics, University of South Florida, 4202 E Fowler Ave, ENB 118, 33620, Tampa, FL, USA aut NATIONALLICENCE 700 1- Bhansali S. Department of Electrical Engineering, Nanomaterials and Nanomanufacturing Research Center, University of South Florida, 4202 E Fowler Ave, ENB 118, 33620, Tampa, FL, USA aut NATIONALLICENCE 773 0- Applied Physics A Springer-Verlag 87/4(2007-06-01), 773-780 0947-8396 87:4<773 2007 87 339 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer