Antifungal Properties of Pure Silver Films with Nanoparticles Induced by Pulsed-Laser Dewetting Process

Silver particles were prepared by dewetting Ag films coated on glass using a fiber laser. The size of the particles was controlled in the range of 92 nm–1.2 μm by adjusting the thickness of the Ag film. The structural properties and surface roughness of the particles were evaluated by means of scanning electron microscopy. In addition, the antifungal activity of the Ag particles was examined using spore suspensions of Colletotrichum gloeosporioides. It is shown that particles with a size of 1.2 μm achieved 100% inhibition of conidia growth of C. gloeosporioides after a contact time of just 5 min. Furthermore, the smaller particles also achieved good antifungal activity given a longer contact time. Similar results were observed for spore germination and pathogenicity tests performed on mango fruit and leaves. Overall, the results confirm that Ag particles have an excellent antifungal effect on C. gloeosporioides.

[1]  A. Ionin,et al.  Fano Resonances as Optical Markers of Sub-Wavelength Nanoparticle Packaging and Elemental Segregation in Laser-Dewetted Au-Pd Film , 2019, Plasmonics.

[2]  A. Bugaev,et al.  Formation of bimetallic gold-silver nanoparticles in glass by UV laser irradiation , 2018, Journal of Alloys and Compounds.

[3]  A. Ionin,et al.  Formation of nanoparticles from thin silver films irradiated by laser pulses in air , 2018 .

[4]  Myeongkyu Lee,et al.  Fabrication of Ag-Au bimetallic nanoparticles by laser-induced dewetting of bilayer films , 2018 .

[5]  D. Kanjilal,et al.  Dewetting induced Au-Ge composite nanodot evolution in SiO2 , 2018 .

[6]  T. Nakajima,et al.  Rapid formation of nanostructures in Au films using a CO2 laser , 2018 .

[7]  P. Swaminathan,et al.  Role of silver nanoparticles in the dewetting behavior of copper thin films , 2017 .

[8]  N. Vittayakorn,et al.  Direct synthesis and growth mechanism of metal molybdate (AMoO4; A = Ca and Ba) fine particles via the mechanochemical method , 2017 .

[9]  Liu Xiaomei,et al.  The laccase gene (LAC1) is essential for Colletotrichum gloeosporioides development and virulence on mango leaves and fruits , 2017 .

[10]  E. Rabkin,et al.  Chemically-induced solid-state dewetting of thin Au films , 2017 .

[11]  Myeongkyu Lee,et al.  Single-pulse transformation of Ag thin film into nanoparticles via laser-induced dewetting , 2017 .

[12]  Chong Cheng,et al.  Bioinspired and biocompatible carbon nanotube-Ag nanohybrid coatings for robust antibacterial applications. , 2017, Acta biomaterialia.

[13]  O. Velgosova,et al.  Influence of pH on green synthesis of Ag nanoparticles , 2016 .

[14]  Victor M. Villapún,et al.  Antibacterial Metallic Touch Surfaces , 2016, Materials.

[15]  R. L. Savio,et al.  Control of the micrometric scale morphology of silicon nanowires through ion irradiation-induced metal dewetting , 2016 .

[16]  F. Cheynis,et al.  How to control solid state dewetting: A short review , 2016 .

[17]  Dr Ashajyothi C,et al.  Investigation of antifungal and anti-mycelium activities using biogenic nanoparticles: An eco-friendly approach , 2016 .

[18]  Pavel A. Belov,et al.  Controllable femtosecond laser‐induced dewetting for plasmonic applications , 2015, 1512.02172.

[19]  N. Safaie,et al.  Evaluation of antifungal activity of silver nanoparticles against some phytopathogenic fungi and Trichoderma harzianum , 2015 .

[20]  J. C. Huang,et al.  Electrochemical and biocompatibility response of newly developed TiZr-based metallic glasses. , 2014, Materials science & engineering. C, Materials for biological applications.

[21]  J. S. Jang,et al.  Antimicrobial properties of Zr–Cu–Al–Ag thin film metallic glass , 2014 .

[22]  P. Chowdappa,et al.  Antifungal activity of chitosan-silver nanoparticle composite against Colletotrichum gloeosporioides associated with mango anthracnose , 2014 .

[23]  F. Lemessa,et al.  Distribution and Occurrence of Mango Anthracnose (Colletotrichum gloesporioides Penz and Sacc) in Humid Agro-ecology of Southwest Ethiopia , 2014 .

[24]  Y. Lin,et al.  Promising antimicrobial capability of thin film metallic glasses. , 2014, Materials science & engineering. C, Materials for biological applications.

[25]  F. Alam,et al.  Deposition of Ag and Au–Ag alloy nanoparticle films by spray pyrolysis technique with tuned plasmonic properties , 2014 .

[26]  M. Rai,et al.  In vitro antifungal efficacy of copper nanoparticles against selected crop pathogenic fungi , 2014 .

[27]  S. Ouda.  Antifungal Activity of Silver and Copper Nanoparticles on Two Plant Pathogens, Alternaria alternata and Botrytis cinerea , 2014 .

[28]  A. Herman,et al.  Nanoparticles as antimicrobial agents: their toxicity and mechanisms of action. , 2014, Journal of nanoscience and nanotechnology.

[29]  Matthias Epple,et al.  Silver as antibacterial agent: ion, nanoparticle, and metal. , 2013, Angewandte Chemie.

[30]  J. C. Huang,et al.  Thin film metallic glasses: Unique properties and potential applications , 2012 .

[31]  A. Mustapha,et al.  Antifungal activity of zinc oxide nanoparticles against Botrytis cinerea and Penicillium expansum. , 2011, Microbiological research.

[32]  S. Kim,et al.  Antibacterial Activity of Silver-nanoparticles Against Staphylococcus aureus and Escherichia coli , 2011 .

[33]  J. C. Huang,et al.  Recent progress in metallic glasses in Taiwan , 2009 .

[34]  M. Hasan,et al.  Effect of annealing temperature on Ag nano-composite synthesized by sol–gel , 2006 .

[35]  J. Leonard,et al.  Suppression of dewetting phenomena during excimer laser melting of thin metal films on SiO2 , 2005 .

[36]  J. Bradley,et al.  A study of spatially coupled bipolar electrochemistry on the sub-micrometer scale: colloidal particles on surfaces and cylinders in nuclear-track etched membranes , 2002 .

[37]  P. Akhtar,et al.  Assessment Keys for Some Important Diseases of Mango , 2002 .

[38]  Jorge J. Rocca,et al.  Demonstration of a High Average Power Tabletop Soft X-Ray Laser , 1998 .