Advantages of highly ionized pulse plasma magnetron sputtering (HIPIMS) of silver for improved E-coli inactivation

被引：22

作者：

Baghriche, Oualid ^{[1
]}

Zertal, Abed ^{[2
]}

Ehiasarian, Arutiun P. ^{[3
]}

Sanjines, R. ^{[4
]}

Pulgarin, Cesar ^{[1
]}

Kusiak-Nejman, Ewelina ^{[1
,5
]}

Morawski, Antoni W. ^{[5
]}

Kiwi, John ^{[6
]}

机构：

[1] EPFL SB ISIC GGEC, Grp Electrochem Engn, Stn 6, CH-1015 Lausanne, Switzerland

[2] Mentouri Univ, Lab Innovat Tech Environm Preservat, Constantine, Algeria

[3] Sheffield Hallam Univ, Mat & Engn Res Inst, Sheffield S1 1WB, S Yorkshire, England

[4] EPFL SB IPMC LPCM, Lab Nanostruct & Novel Elect Mat, CH-1015 Lausanne, Switzerland

[5] W Pomeranian Univ Technol, Inst Chem & Environm Engn, PL-70322 Szczecin, Poland

[6] EPFL SB ISIC LPI, Lab Photon & Interfaces, CH-1015 Lausanne, Switzerland

来源：

THIN SOLID FILMS | 2012年 / 520卷 / 09期

关键词：

High Impulse Power Magnetron Sputtering; Direct Current Magnetron Sputtering; E; coli; X-ray Photoelectron Spectroscopy; Silver; Polyester; TIO2; IONS;

D O I：

10.1016/j.tsf.2011.12.060

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

This study addresses the DC-magnetron sputtering (DCMS) of Ag-films on polyester and compares the results found for the E. coli inactivation with the inactivation obtained when applying highly ionized pulse plasma power magnetron sputtering (HIPIMS). The amounts of Ag needed to inactivate E. coli by HIPIMS sputtering were an order of magnitude lower than with DCMS indicating a significant saving of noble metal and concomitantly a faster E. coli inactivation was observed compared to samples sputtered with DCMS. Higher current densities applied with DCMS led to shorter E. coli inactivation times and this trend was observed also for HIPIMS sputtered samples. By DCMS the thicker layers needed to inactivate E. coli comprised slightly larger Ag-aggregates compared to the thinner Ag-layers sputtered by HIPIMS to inactivate E. coli within short times. Longer sputtering times by DCMS and HIPIMS lead to optically darker Ag-deposits reaching the absorption edge of silver absorption of similar to 1000 nm. Mass spectroscopic analyses indicated that HIPIMS produced a much higher amount of Ag1+ and Ag2+ compared to DCMS due to the higher peak discharge current employed in the former case. (C) 2011 Elsevier B.V. All rights reserved.

引用

页码：3567 / 3573

页数：7

共 32 条

[1] Photocatalytic Reduction of Graphene Oxide Nanosheets on TiO2 Thin Film for Photoinactivation of Bacteria in Solar Light Irradiation [J].

Akhavan, O. ;

Ghaderi, E. .

JOURNAL OF PHYSICAL CHEMISTRY C, 2009, 113 (47) :20214-20220

[2]

Briggs D., 1988, PRACTICAL SURFACE AN, V1

[3] Structure-reactivity relations for DC-magnetron sputtered Cu-layers during E. coli inactivation in the dark and under light [J].

Castro, C. ;

Sanjines, R. ;

Pulgarin, C. ;

Osorio, P. ;

Giraldo, S. A. ;

Kiwi, J. .

JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY, 2010, 216 (2-3) :295-302

[4] Photodynamics and surface characterization of TiO2 and Fe2O3 photocatalysts immobilized on modified polyethylene films [J].

Dhananjeyan, MR ;

Mielczarski, E ;

Thampi, KR ;

Buffat, P ;

Bensimon, M ;

Kulik, A ;

Mielczarski, J ;

Kiwi, J .

JOURNAL OF PHYSICAL CHEMISTRY B, 2001, 105 (48) :12046-12055

[5] Inactivation of clinically relevant pathogens by photocatalytic coatings [J].

Dunlop, P. S. M. ;

Sheeran, C. P. ;

Byrne, J. A. ;

McMahon, M. A. S. ;

Boyle, M. A. ;

McGuigan, K. G. .

JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY, 2010, 216 (2-3) :303-310

[6] Ion composition produced by high power impulse magnetron sputtering discharges near the substrate [J].

Ehiasarian, A. P. ;

Vetushka, A. ;

Hecimovic, A. ;

Konstantinidis, S. .

JOURNAL OF APPLIED PHYSICS, 2008, 104 (08)

[7] Influence of high power densities on the composition of pulsed magnetron plasmas [J].

Ehiasarian, AP ;

New, R ;

Münz, WD ;

Hultman, L ;

Helmersson, U ;

Kouznetsov, V .

VACUUM, 2002, 65 (02) :147-154

[8] Time-Resolved Ionisation Studies of the High Power Impulse Magnetron Discharge in Mixed Argon and Nitrogen Atmosphere [J].

Ehiasarian, Arutiun P. ;

Gonzalvo, Yolanda Aranda ;

Whitmore, Terry D. .

PLASMA PROCESSES AND POLYMERS, 2007, 4 :S309-S313

[9] Antimicrobial activity of titania/silver and titania/copper films prepared by CVD [J].

Foster, H. A. ;

Sheel, D. W. ;

Sheel, P. ;

Evans, P. ;

Varghese, S. ;

Rutschke, N. ;

Yates, H. M. .

JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY, 2010, 216 (2-3) :283-289

[10] Reversible Antimicrobial Photoswitching in Nanosilver [J].

Gunawan, Cindy ;

Teoh, Wey Yang ;

Marquis, Christopher P. ;

Lifia, Juniahani ;

Amal, Rose .

SMALL, 2009, 5 (03) :341-344

← 1 2 3 4 →