Iron-gold barcode nanowire and manufacturing method thereof

A method of manufacturing a barcode nanowire having a superior biocompatibility, the method comprising the steps of:

• preparing a nanotemplate having a pore and representing insulating property;
• disposing the nanotemplate in an electrolytic solution including a first precursor for generating an iron ion and a second precursor for generating a gold ion;
• and
• performing an electro-deposition to alternately and repeatedly form an iron layer and a gold layer in the pore,
• wherein the electro-deposition step galvanostaticaly controls how iron ions and gold ions deposit into the pore, the electro-deposition step including a first step of forming the iron layer by applying a first current and a second step of forming the gold layer by applying a second current, the second has a current density lower than a current density of the first current, and the first and second steps are alternately and repeatedly performed until the nanowire has a required length,
• wherein the density of the first current is in a range of from 10 mA/cm2 to 50 mA/cm2, and the density of the second current is in a range of from 0.2 mA/cm2 to 2 mA/cm2, and
• wherein a molarity ratio of an iron to a gold ion is within a range of 4:1 to 40:1 in the electrolytic solution.