The 2018 Technical Board (TB) meeting and Supervisory Board (SB) meeting of the Laser4Fun project took place on October 4 and 5 in Bari, Italy. The meeting was hosted by prof. Antonio Ancona of IFN-CNR, Istituto di Fotonica e Nanotecnologie, Bari, Italy. The TB & SB discussed the progress of the project, results, management and reporting issues, as well as communication and dissemination topics. Also all Early Stage Researchers (ESRs) presented their progress and results to the SB. We were happy to conclude the project is well on track.
The 3rd Laser4Fun international Summer School took place from October 1st to 5th and was hosted by prof. Antonio Ancona of the IFN-CNR, Istituto di Fotonica e Nanotecnologie in Bari, Italy. The participants of the summer school were “fully-immersed” into the world of Laser Micro/Nanostructuring and Surface Tribology. Lectures and presentations by academic experts and of the participants alternated, with ample time for discussions. Topics included, but were not limited to:
- Contact mechanics of elastic bodies, by dr. Ing. Carmine Putignano (Politecnico di Bari, Department of Mechanics, Mathematics and Management)
- Universal lab-on-a-chip platform for complex, perfused 3D tissues generated by 3D printing – opportunities and perspectives for laser technology, by dr. Ing. Udo Klotzbach (Fraunhofer-Institut Material and Beam Technology IWS Dresden, Business Unit Manager Microtechnology)
- Management of innovative project at Bosch: LST case study, by ing. Antonio Grimaldi and Ing. Renato Giannoccaro (Robert Bosch Group – Centro Studi Componenti per Veicoli s.p.a)
- Cross Cultural Competences through cooperation and autonomy. Learning organization: higher education management and research administration, by dr.ssa Mariapia Circella (Physics Department, University of Bari)
- Femtosecond laser micro-fabrication of polymeric lab-on-chip for advanced and mini-invasive diagnostics, by Udith K. Vadakkum Vadukkal (University of Bari, Italy)
- Femtosecond laser bursts induced micro and nanostructuring on steel surface, by Giuseppe Giannuzzi (Università di Bari, Italy)
- Contact mechanics of viscoelastic bodies, by prof. Ing. Giuseppe Carbone (PoliBa- Department of Mechanics, Mathematics and Management)
- University of 21st century: threats and opportunities. Organizational chart: practical experiences, by dr.ssa Mariapia Circella (Physics Department, University of Bari)
On September 25th, Melissa Sikosana (ESR), has been awarded 3rd place by a distinguished jury, for “breaking the wall of bacteria related deaths”, at the “Falling Walls Lab Marie Sklodowska-Curie Actions Event“. This event was organised by the European Commission in collaboration with the European Parliament and supported by the Falling Walls Foundation.
The Falling Walls Lab challenging inter-disclipinary platform that invites talent academics, professionals and entrepreneurs from around the world to present breakthrough-research work, within 3 minutes, each to an audience of industry experts & decision makers.
Patricia Reilly, ‘Deputy Chief of Staff (or Deputy Chef de Cabinet) for EU Commissioner for Education Culture, Youth and Sport’ presented the award to Melissa.
Last 11th of September 140 people, among students, supervisors and management, gathered in the ZAL (Zentrum für Angewandte Luftfahrtforschung) facilities in Hamburg for the 11th edition of the Airbus PhD Day 2018. Vittorio Vercillo, an Early Stage Researcher (ESR) in the Laser4Fun project, was awarded of the Best Speaker Award, Runner Up, for his contribution “Laser micro-/nano-structuring to produce icephobic surfaces”. In the picture, Vittorio receives the award from Dr. Michael Schoenwetter, Airbus R&T Partnerships & Contracting.
From October 1st up to and including October 5th, the third Summer school for (and by) PhD students of the Laser4Fun project is organised and hosted by CNR IFN and Politecnio di Bari in Bari, Italy. The topic of the summer school is “Laser Micro/Nanostructuring and Surface Tribology”.
Filigree engravings on external surfaces of aircraft are intended to ensure that airflow remains smooth and drag on the aircraft low. For this, engineers at the Fraunhofer Institute for Material and Beam Technology IWS, the Technische Universität Dresden and Airbus have developed a laser process that produces textured surfaces at high throughput making surface contamination more difficult.
More details can be found at:
Results of the work in the Laser4Fun project has been published as:
Andrés Fabián Lasagni, Sabri Alamri, Alfredo Ismael Aguilar-Morales, Florian Rößler, Bogdan Voisiat and Tim Kunze. Biomimetic Surface Structuring Using Laser Based Interferometric Methods. Appl. Sci. 2018, 8(8), 1260
This review investigates the capabilities of laser-based interferometric methods for producing structures with multiple-scaled surface features imitating natural examples. Firstly, laser interference lithography is used to produce hierarchical patterns with length-scales in the micrometer and sub-micrometer range. Different strategies are discussed to produce a wide variety of periodic arrays, depending on the number of resist lasers used as well as the way in which the exposure steps are organized. After that, periodic patterns are fabricated on polymers using ns laser pulses from an UV-laser system. Additionally in this case, multiple-scale patterns are produced by using different strategies. A similar approach is described to treat metallic surfaces of steel X6Cr17 and a titanium alloy Ti6Al4V. The geometry of the produced microstructures was characterized using scanning electron microscopy and confocal microscopy. Measurement of water contact angle is performed for both polymer and metallic surfaces..
The 19th International Symposium on Laser Precision Microfabrication (LPM 2018, www.lpm2018.org) takes place on June 25-28, 2018 in Edinburgh, Scotland, UK. This symposium is the world’s number one meeting of the laser user community where the most advanced developments and recent trends in laser application for fine and precise fabrication of diverse materials are discussed between industry, research and academia.
Today, Tuesday June 26th, a whole session was dedicated to presentations by near all our ESRs, disseminating results from the Laser4Fun project.
On June 19th ESRs Luigi Capuano and Marek Mezera attended the Photonics Event 2018 in Enschede, The Netherlands, see https://photonics-event.nl/home-eng/. This event is the annual meeting point for the photonics community in the Benelux and Germany. At this event researchers, developers, designers and engineers working in the application and development of photonics meet to discuss the latest trends and developments. For companies from end markets such as Agriculture, Food, Healthcare, Lifescience or the High-tech Systems sector, it is a good opportunity to get acquainted with the technology and the companies that can support development.
Results of the work in the Laser4Fun project has been published as:
Alfredo I. Aguilar-Morales, Sabri Alamri, Tim Kunze, Andrés Fabián Lasagni. Influence of processing parameters on surface texture homogeneity using Direct Laser Interference Patterning. Optics & Laser Technology. Volume 107, November 2018, Pages 216–227.
Surface functionalities in the field of tribology, wettability, biocompatibility and holographic marking introduced by well-defined surface structures strongly depend on the surface texture homogeneity and quality. This work presents strategies for the fabrication of homogeneous periodic surface microstructures employing the Direct Laser Interference Patterning (DLIP) technology with the fundamental transverse mode (TEM00) emitted from a nanosecond laser source. Ti6Al4V substrates are structured using line-like patterns with spatial periods of 7.20 µm, 5.82 µm and 4.31 µm. The impact of various DLIP process parameters such as laser fluence, pulse overlap, hatch distance and spatial period on the produced surface microstructures is introduced and the consequences on the surface texture homogeneity are discussed. Large-area analysis of micro structures is carried out through white light interferometry and scanning electron microscopy. A quantitative measurement scheme of the pattern homogeneity, based on topographical properties such as kurtosis, standard deviation and mean structure height was introduced. Furthermore, the influence of a second modulation arising from the employed hatch distance has been identified. A quantitative parameter, the surface error percentage, has been introduced and employed for the characterization of pattern homogeneity. It was found that specially for larger spatial periods and surfaces treated at high laser fluence, pulse-to-pulse overlaps and a short hatch distance, the overall surface texture homogeneity could be improved up to ∼80–90%.