A versatile synthesis method of dendrites-free segmented nanowires with a precise size control

• Type: Article in International Scientific Journal
• Date: 2012

Authors

sousa, celia t. (Author) Other; leitao, diana c. (Author) Other; ventura, joao (Author) FCUP; tavares, pedro b. (Author) Other; araujo, joao p. (Author) FCUP

Journal

Title: Nanoscale Research Letters

Vol. 7

Pages: 1-11

ISSN: 1931-7573

Publisher: Springer Nature

Indexing

ISI Web of Knowledge - 11 Citations

Scopus - 13 Citations

Other information

Authenticus ID: P-002-C5A

DOI: 10.1186/1556-276x-7-168

Abstract (EN): We report an innovative strategy to obtain cylindrical nanowires combining well established and low-cost bottom-up methods such as template-assisted nanowires synthesis and electrodeposition process. This approach allows the growth of single-layer or multi-segmented nanowires with precise control over their length (from few nanometers to several micrometers). The employed techniques give rise to branched pores at the bottom of the templates and consequently dendrites at the end of the nanowires. With our method, these undesired features are easily removed from the nanowires by a selective chemical etching. This is crucial for magnetic characterizations where such non-homogeneous branches may introduce undesired features into the final magnetic response. The obtained structures show extremely narrow distributions in diameter and length, improved robustness and high-yield, making this versatile approach strongly compatible with large scale production at an industrial level. Finally, we show the possibility to tune accurately the size of the nanostructures and consequently provide an easy control over the magnetic properties of these nanostructures.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 7