Metallic copper nanowires have been grown into the pores of alumina membranes by electrodeposition from an aqueous solution containing CuSO4 .and H3BO3 at pH 3. In order to study the influence of the electrical parameters on growth and structure of nanowires, different deposition potentials (both in the region where hydrogen evolution reaction is allowed or not) and voltage perturbation modes (constant potential or unipolar pulsed depositions) were applied. In all cases, pure polycrystalline Cu nanowires were fabricated into template pores, having lengths increasing with the total deposition time. These nanowires were self-standing, because they retain their vertical orientation and parallel geometry even after total template dissolution. However, the electrical parameters influence the growth rate, length uniformity and crystal size of the nanowires. Continuous electrodeposition resulted in higher growth rates but less uniform lengths of nanowires grown inside different membrane pores, whilst a square pulse deposition produced a slower growth but quite uniform lengths. Also the grain size, of the order of 50 nm, was slightly influenced by the potential perturbation mode.

Inguanta, R., Piazza, S., & Sunseri, C. (2009). Influence Of The Electrical Parameters On The Fabrication Of Copper Nanowires Into Anodic Alumina Templates. APPLIED SURFACE SCIENCE, 255, 8816-8823 [10.1016/j.apsusc.2009.06.062].

Influence Of The Electrical Parameters On The Fabrication Of Copper Nanowires Into Anodic Alumina Templates

INGUANTA, Rosalinda;PIAZZA, Salvatore;SUNSERI, Carmelo
2009

Abstract

Metallic copper nanowires have been grown into the pores of alumina membranes by electrodeposition from an aqueous solution containing CuSO4 .and H3BO3 at pH 3. In order to study the influence of the electrical parameters on growth and structure of nanowires, different deposition potentials (both in the region where hydrogen evolution reaction is allowed or not) and voltage perturbation modes (constant potential or unipolar pulsed depositions) were applied. In all cases, pure polycrystalline Cu nanowires were fabricated into template pores, having lengths increasing with the total deposition time. These nanowires were self-standing, because they retain their vertical orientation and parallel geometry even after total template dissolution. However, the electrical parameters influence the growth rate, length uniformity and crystal size of the nanowires. Continuous electrodeposition resulted in higher growth rates but less uniform lengths of nanowires grown inside different membrane pores, whilst a square pulse deposition produced a slower growth but quite uniform lengths. Also the grain size, of the order of 50 nm, was slightly influenced by the potential perturbation mode.
Settore ING-IND/23 - Chimica Fisica Applicata
Inguanta, R., Piazza, S., & Sunseri, C. (2009). Influence Of The Electrical Parameters On The Fabrication Of Copper Nanowires Into Anodic Alumina Templates. APPLIED SURFACE SCIENCE, 255, 8816-8823 [10.1016/j.apsusc.2009.06.062].
File in questo prodotto:
File Dimensione Formato  
CuASS2009.pdf

accesso aperto

Descrizione: Articolo
Dimensione 803.47 kB
Formato Adobe PDF
803.47 kB Adobe PDF Visualizza/Apri

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/10447/55780
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 39
  • ???jsp.display-item.citation.isi??? 41
social impact