Two‐ and Three‐Dimensional Micro‐ and Sub‐Micrometer Periodic Structures Using Two‐Beam Laser Interference Lithography

Lasagni, Andrés Fabían; Menéndez-Ormaza, B. S.

doi:10.1002/adem.200900221

Cited by 27 publications

(19 citation statements)

References 28 publications

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“…Given the ease by which such systems can be manufactured, recent advances in the field of manufacturing (e.g., recent work reporting fabrication of two and threedimensional structures based on interference lithography [31] ) and the wide range of applications for auxetic systems, we hope that this work will encourage further developments in this direction and facilitate the mass-production of auxetics. …”

Section: By Joseph N Grima * and Ruben Gattmentioning

confidence: 99%

Perforated Sheets Exhibiting Negative Poisson's Ratios

2010

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Sheets made from readily available conventional materials containing diamond or star shaped perforations are shown to exhibit various Poisson's ratio values which could also be negative (auxetic). This behavior may be exhibited in both tension and compression and can be explained through models based on “rotating rigid units.” This provides an easy manner for the manufacture of auxetic or conventional systems at any scale which can be tailor made to exhibit particular values of the Poisson's ratio.

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Section: By Joseph N Grima * and Ruben Gattmentioning

confidence: 99%

Perforated Sheets Exhibiting Negative Poisson's Ratios

2010

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“…We thus engineered special copper surfaces, so-called "contact arrays": copper surfaces were covered by an inert polymer into which arrays of holes less than 1 m in diameter were etched by a photolithographic process, using laser interference (24). Enterococcus hirae was used as a model organism because Gram-positive organisms are frequent pathogens and the contact killing behavior of E. hirae had previously been studied (23).…”

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confidence: 99%

Contact Killing of Bacteria on Copper Is Suppressed if Bacterial-Metal Contact Is Prevented and Is Induced on Iron by Copper Ions

Mathews

Hans

Mücklich

et al. 2013

Appl Environ Microbiol

166

114

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bBacteria are rapidly killed on copper surfaces, and copper ions released from the surface have been proposed to play a major role in the killing process. However, it has remained unclear whether contact of the bacteria with the copper surface is also an important factor. Using laser interference lithography, we engineered copper surfaces which were covered with a grid of an inert polymer which prevented contact of the bacteria with the surface. Using Enterococcus hirae as a model organism, we showed that the release of ionic copper from these modified surfaces was not significantly reduced. In contrast, killing of bacteria was strongly attenuated. When E. hirae cells were exposed to a solid iron surface, the loss of cell viability was the same as on glass. However, exposing cells to iron in the presence of 4 mM CuSO 4 led to complete killing in 100 min. These experiments suggest that contact killing proceeds by a mechanism whereby the metal-bacterial contact damages the cell envelope, which, in turn, makes the cells susceptible to further damage by copper ions.

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“…In case of ns pulse laser systems, this can be realized by using beam splitters and mirrors as shown in Fig. 1 [11,12]. As shown in Fig.…”

Section: Resultsmentioning

confidence: 99%

To use or not to use (direct laser interference patterning), that is the question

et al. 2015

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Direct Laser Interference Patterning (DLIP) has shown to be a fabrication technology capable of producing large area periodic surface patterns on almost any kind of material. The produced structures have been used in the past to provide surfaces with new enhanced properties. On the other hand, the industrial use of this technology is still at the beginning due to the lack of appropriate and affordable systems, especially for small and medium enterprises. In this paper, the use of DLIP for the fabrication of periodic structures using different structuring strategies and optical concepts is discussed. Different technological challenges are addressed

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Two‐ and Three‐Dimensional Micro‐ and Sub‐Micrometer Periodic Structures Using Two‐Beam Laser Interference Lithography

Cited by 27 publications

References 28 publications

Perforated Sheets Exhibiting Negative Poisson's Ratios

Perforated Sheets Exhibiting Negative Poisson's Ratios

Contact Killing of Bacteria on Copper Is Suppressed if Bacterial-Metal Contact Is Prevented and Is Induced on Iron by Copper Ions

To use or not to use (direct laser interference patterning), that is the question

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