Research

High Aspect Ratio Nanostructures Kill Bacteria via Storage and Release of Mechanical Energy

ACS Nano, 114(9), 2165–2173 (2018)
Denver P. Linklater, Michael De Volder, Vladimir A Baulin, Marco Werner, Sarah Jessl, Mehdi Golozar, Laura Maggini, Sergey Rubanov, Eric Hanssen, Saulius Juodkazis, Elena P. Ivanova
The properties of lipid bilayers in sucrose solutions have been intensely scrutinized over recent decades because of the importance of sugars in the field of biopreservation. […]

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Mechano-bactericidal mechanism of graphene nanomaterials

Interface Focus, 8, 20170060, (2018)
Denver P. Linklater, Vladimir A. Baulin, Saulius Juodkazis and Elena P. Ivanova
Growing interest in the bactericidal effect of graphene and graphene-derived nanomaterials has led to the investigation and effective publication of the bactericidal effects of the substratum, many of which present highly conflicting material. The nature of bacterial cell death on graphene […]

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Study of melanin localization in the mature male Calopteryx haemorrhoidalis damselfly wings

J. Synchrotron Rad. 25, 874-877 (2018)
Vi Khanh Truong, Jitraporn Vongsvivut, Nipuni Mahanamanam Geeganagamage, Mark J. Tobin, Pere Luque, Vladimir A. Baulin, Marco Werner, Shane Maclaughlin, Russell J. Crawford and Elena P. Ivanova
Damselflies Calopteryx haemorrhoidalis exhibiting black wings are found in the western Mediterranean, Algeria, France, Italy, Spain and Monaco. Wing pigmentation is caused by the presence of melanin, which is involved […]

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Pheochromocytoma (PC12) Cell Response on Mechanobactericidal Titanium Surfaces

Materials 2018, 11(4), 605 (2018); https://doi.org/10.3390/ma11040605
Jason V. Wandiyanto, Denver Linklater, Pallale G. Tharushi Perera, Anna Orlowska, Vi Khanh Truong, Helmut Thissen, Shahram Ghanaati, Vladimir A. Baulin, Russell J. Crawford, Saulius Juodkazis and Elena P. Ivanova
Titanium is a biocompatible material that is frequently used for making implantable medical devices. Nanoengineering of the surface is the common method for increasing material […]

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The Effect of Coatings and Nerve Growth Factor on Attachment and Differentiation of Pheochromocytoma Cells

Materials, 11(1) 60 (2018)
Anna Orlowska, Pallale Tharushi Perera, Mohammad Al Kobaisi, Andre Dias,
Huu Khuong Duy Nguyen, Shahram Ghanaati, Vladimir A. Baulin, Russell J. Crawford, Elena P. Ivanova
Cellular attachment plays a vital role in the differentiation of pheochromocytoma (PC12) cells. PC12 cells are noradrenergic clonal cells isolated from the adrenal medulla of Rattus norvegicus and studied extensively […]

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Bactericidal activity of self-assembled palmitic and stearic fatty acid crystals on highly ordered pyrolytic graphite

Acta Biomaterialia, 59, 148-157 (2017).
Elena P. Ivanova, Song Ha Nguyen, Yachong Guo, Vladimir A. Baulin, Hayden K. Webb, Vi Khanh Truong, Jason V. Wandiyanto, Christopher J. Garvey, Peter
J. Mahon, David E. Mainwaring, Russell J. Crawford
The wings of insects such as cicadas and dragonflies have been found to exhibit nanostructure arrays that are assembled from fatty acids, […]

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The susceptibility of Staphylococcus aureus CIP 65.8 and Pseudomonas aeruginosa ATCC 9721 cells to the bactericidal action of nanostructured Calopteryx haemorrhoidalis damselfly wing surfaces

Appl Microbiol Biotechnol (2017). doi:10.1007/s00253-017-8205-9
Vi Khanh Truong, Nipuni Mahanamanam Geeganagamage, Vladimir A. Baulin, Jitraporn Vongsvivut, Mark J. Tobin, Pere Luque, Russell J. Crawford, Elena P. Ivanova
Nanostructured insect wing surfaces have been reported to possess the ability to resist bacterial colonization through the mechanical rupture of bacterial cells coming into contact with the surface. In this […]

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Adsorption of Human Plasma Albumin and Fibronectin onto Nanostructured Black Silicon Surfaces

Langmuir: 10.1021/acs.langmuir.6b02601 (2016)
Duy H. K. Nguyen, Vy T. H. Pham, Mohammad Al Kobaisi, Chris M. Bhadra, Anna Orlowska, Shahram Ghanaati, Berardo Mario Manzi, Vladimir A Baulin, Saulius Juodkazis, Peter Kingshott, Russell J Crawford, and Elena P. Ivanova

The protein adsorption of two human plasma proteins, albumin (Alb) and fibronectin (Fn) onto synthetic nanostructured bactericidal material, black silicon […]

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Self-organised nanoarchitecture of titanium surfaces influences the attachment of Staphylococcus aureus and Pseudomonas aeruginosa bacteria

Applied Microbiology and Biotechnology (2015) 99 (16), 6831-6840 DOI: 10.1007/s00253-015-6572-7
Vi K. Truong, Vy T. H. Pham, A. Medvedev, R. Lapovok, Y. Estrin, T. C. Lowe, V. Baulin, V. Boshkovikj, C. J. Fluke, R. J. Crawford, E. P. Ivanova

The surface nanotopography and architecture of medical implant devices are important factors that can control the extent of bacterial attachment. The ability to prevent bacterial attachment […]

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TV3 film in Terres de l’Ebre

7 August 2015 – Massif Els Ports, Tarragona, Spain
Outreach activity:
Catalan TV channel TV3 film our expedition in Terres de l’Ebre to describe our research on dragonfly wings in Massif Els Ports. 

http://mp4-medium-dwn.media.tv3.cat/6/2/1440073012926.mp4

Highlight in newspapers and radio:

TV3
TarragonaRadio
URV Activa
La Vanguardia
Diari de Tarragona
ElEconomista
Comsciencia
Ceics news
Nacidigital
Biblioteca Roquetes

How it was filmed:
 

 
Authors

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Graphene Induces Formation of Pores That Kill Spherical and Rod-Shaped Bacteria

ACS Nano, DOI: 10.1021/acsnano.5b03368 (2015)
Vy T. H. Pham, Vi Khanh Truong, Matthew D. J. Quinn, Shannon M. Notley, Yachong Guo, Vladimir A. Baulin, Mohammad Al Kobaisi, Russell J. Crawford, and Elena P. Ivanova

Pristine graphene, its derivatives, and composites have been widely reported to possess antibacterial properties. Most of the studies simulating the interaction between bacterial cell […]

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Dragonfly Expedition

26 June 2015 – Massif Els Ports, Tarragona, Spain
Dragonfly expedition to Massif Els Ports in collaboration with Museu de les Terres de l’Ebre, Amposta, Swinburne University of Technology, Australia and Universitat Rovira i Virgili, Tarragona
Unique limestone massif Els Ports is situated in Catalonia, Valencia and Aragon, characterised by its abrupt cliff faces, which has been inhabited […]

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Nanotopography as a trigger for the microscale, autogenous and passive lysis of erythrocytes

J. Mater. Chem. B, 2 (19), 2785-2948 (2014)
Vy T. H. Pham, Vi Khanh Truong, David E. Mainwaring, Yachong Guo, Vladimir Baulin, Mohammad Al Kobaisi,   Gediminas Gervinskas, Saulius Juodkazis, Wendy R. Zeng, Pauline Doran, Russell J Crawford and Elena P. Ivanova

Microscale devices are increasingly being developed for diagnostic analysis although conventional lysis as an initial step presents […]

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Bactericidal activity of black silicon

Nature Comm., 4, 2838 (2013)
E. P. Ivanova, J. Hasan, H. K. Webb, G. Gervinskas, S. Juodkazis, Vi K. Truong, A. H. F. Wu, R. N. Lamb, V. A. Baulin, G. S. Watson, J. A. Watson, D. E. Mainwaring, R. J. Crawford

 Black silicon is a synthetic nanomaterial that contains high aspect ratio nanoprotrusions on its surface, produced through a simple reactive-ion etching technique for use in photovoltaic applications. Surfaces with high […]

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Anti-bacterial surfaces inspired by cicada and dragonfly wings

This is the first reported example of a naturally existing surface with a physical structure that exhibits such effective bactericidal properties. Cicada wing nanopillars are extremely effective at killing Pseudomonas aeruginosa cells; the wing surface was able to kill individual cells within approximately 3 min. This bactericidal ability of the wing surface is primarily a physico-mechanical effect, […]

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Natural Bactericidal Surfaces: Mechanical Rupture of Pseudomonas aeruginosa Cells by Cicada Wings

Elena P. Ivanova, Jafar Hasan, Hayden K. Webb, Vi Khanh Truong, Gregory S. Watson, Jolanta A. Watson, Vladimir A. Baulin, Sergey Pogodin, James Y. Wang, Mark J. Tobin, Christian Löbbe, Russell J. Crawford

Small, 8 (16), 2489 – 2494 (2012)

Natural superhydrophobic surfaces are often thought to have antibiofouling potential due to their self-cleaning properties. However, when […]

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Anti-bacterial surfaces inspired by cicada and dragonfly wings

Many surfaces found in nature possess sophisticated topographical structures which provide them with exceptional properties. Nano-structured surface of lotus leafs efficiently repel water, microscopic brushes of gecko fingers drastically increase the contact with surfaces, topographical structures provides for enhanced anti-reflection surface properties in insects. Self-cleaning ability of bio-surfaces enables them to prevent contamination by particles […]

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Differential attraction and repulsion of Staphylococcus aureus and Pseudomonas aeruginosa on molecularly smooth titanium films

E. Ivanova, V. Khanh Truong , H. Webb , V.A. Baulin, J. Wang , N. Mohammodi, F. Wang, C. Fluke, R. Crawford

Langmuir, 27(18), 11710-11721 (2011)

Magnetron sputtering techniques were used to prepare molecularly smooth titanium thin films possessing an average roughness between 0.18 nm and 0.52 nm over 5 μm × 5 μm AFM scanning areas. Films […]

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