Fabrication of nano wire arrays using diblock copolymer

V. Sudha Rani, C. O. Kim, B. Parvatheeswara Rao, S. S. Yoon, Cheol Gi Kim

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

4 Scopus citations

Abstract

Electrodeposited Co nanowires were grown on self assembled diblock copolymer nanoporous templates. While keeping the template pore size and electrolyte pH value constant at 13.7 nm and 3.82, respectively, the DC current density (5 mA/cm2 and 50 mA/cm2) and time of deposition (50s, 100s, 150s and 200s) were varied as an attempt to obtain nanowires of varied aspect ratios and morphologies. It was observed that height of the nanowire linearly enhances with the time of the electrodeposition. SEM images of the samples indicate that the template pores were completely filled during deposition when the current density was set 50 mA/cm2. Excess times of deposition produced a thin layer of the deposited material on top of the porous template. Magnetic hysteresis properties of the generated nanowires were examined by vibration sample magnetometry. The loops displayed are highly square with coercivities of few tens of oersteds. The magnetization of the Co nanowires enhances as the height of the wires increases. The results were analyzed to understand the influence of current density on the growth of nanowires.

Original languageEnglish
Title of host publicationProceedings of the 2nd IEEE International Conference on Nano/Micro Engineered and Molecular Systems, IEEE NEMS 2007
Pages1179-1182
Number of pages4
DOIs
StatePublished - 2007
Event2007 2nd IEEE International Conference on Nano/Micro Engineered and Molecular Systems, IEEE NEMS 2007 - Bangkok, Thailand
Duration: 16 Jan 200719 Jan 2007

Publication series

NameProceedings of the 2nd IEEE International Conference on Nano/Micro Engineered and Molecular Systems, IEEE NEMS 2007

Conference

Conference2007 2nd IEEE International Conference on Nano/Micro Engineered and Molecular Systems, IEEE NEMS 2007
Country/TerritoryThailand
CityBangkok
Period16/01/0719/01/07

Keywords

  • Diblock copolymer
  • Electrodeposition
  • Magnetization
  • Nanowire
  • SEM images

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