Projects / Programmes source: ARIS

Materiali in strukture za optično variabilne zaščitne elemente (Slovene)

Research activity

Code Science Field Subfield
2.22.01  Engineering sciences and technologies  Communications technology  Graphic technology 

Code Science Field
2.10  Engineering and Technology  Nano-technology 
Evaluation (rules)
source: COBISS
Researchers (12)
no. Code Name and surname Research area Role Period No. of publicationsNo. of publications
1.  18271  PhD Miha Čekada  Materials science and technology  Researcher  2009 - 2012  430 
2.  15601  Jožko Fišer    Technical associate  2009 - 2012  12 
3.  26128  MSc Barbara Germ Galić  Communications technology  Researcher  2009 - 2011 
4.  27704  PhD Nina Hauptman  Chemistry  Researcher  2009 - 2011  98 
5.  12616  PhD Darinka Kek Merl  Materials science and technology  Researcher  2009 - 2012  129 
6.  26130  Milan Kerič  Manufacturing technologies and systems  Researcher  2009 - 2012 
7.  04423  PhD Marta Klanjšek Gunde  Electronic components and technologies  Head  2009 - 2012  559 
8.  11733  PhD Matjaž Kunaver  Materials science and technology  Researcher  2009 - 2012  338 
9.  15602  Damjan Matelič    Technical associate  2009 - 2012 
10.  09090  PhD Peter Panjan  Materials science and technology  Researcher  2009 - 2012  789 
11.  26134  Barbara Sušin  Manufacturing technologies and systems  Researcher  2009 - 2012 
12.  29493  PhD Maša Žveglič  Materials science and technology  Junior researcher  2009 - 2012  34 
Organisations (3)
no. Code Research organisation City Registration number No. of publicationsNo. of publications
1.  0104  National Institute of Chemistry  Ljubljana  5051592000  21,268 
2.  0106  Jožef Stefan Institute  Ljubljana  5051606000  88,083 
3.  2324  CETIS, grafične in dokumentacijske storitve, d.d. (Slovene)  Celje  5042208  49 
Significance for science
Interdisciplinary research combining micro-and nano-optics, spectroscopy, material science, physics and chemistry of thin films, photochemistry, photolithography and graphics technology was done. This is the first synthesis of such knowledge in Slovenia. The project group has discussed also some scientific problems; the most important are exposed in the following. Creating zero-order diffraction structures requires photolithographic procedures enabling to control the shape of the surface relief in nanoscale details and extremely precise periods on longer distances. We have shown that scanning lithography with a UV diode laser is not sufficient enough to provide such details in the required precision. This forms a basis for further research in the field of nanostructures capable to provide specific optical effects such as zero order diffraction. We have shown that sub-micron structures could be prepared with modification of metal surfaces by short laser pulses. Surface structures that meet the essential requirements DOVID structures could be obtained applying relevant parameters of laser pulses. Further research is needed to provide one of the most promising and innovative methods for making DOVID, which is of great importance for the development of modern surface technologies. Synthesis of several areas of science and technology, where there was little collaborative research so far is of particular importance: forensics, laser surface modification and hard coatings. The possibility to prepare a polymer nanocomposite with sufficiently high refractive index for optical labelling of nano-structured surface was also analysed. It was shown that the known methods applied in this area do not enable preparation of polymer materials with such high requirements. We have shown that scattering of light on nanoparticles in layer obscures structural detail of surface; this is a good basis for our future research on the field. Objective detecting of complex appearance of DOVID is one of the basic problems of description of optical properties of gonioapparent objects, which is a special branch of basic research in the field of human vision. Our solution shows relatively simple description of the effect, which is possible to measure by a portable goniospectrophotometer. The data are transformed into goniometric space, giving appearance fingerprint of the surface. Generalization of the method to arbitrary surfaces and its importance in basic research on appearance of complex surfaces is prepared for future research on this special filed. Research carried out in the framework of the project was to develop the method and to apply in to DOVID. While they have extremely complex angular-dependent appearance which can be reasonably well calculated, it is reasonable to expect that the method is useful for describing the appearance of surfaces with less complicated optical effects. The research required to protect printed matter against counterfeiting was done. Such a research has strongly limited publication possibilities, which have to be adjusted accordingly to protect the specific results and findings. These are in line with the needs and potential of beneficiary. However, we have informed domestic public about problems and basic findings (lecture on the “Nanotechnology Day”, and publication in a scientific journal Vakuumist). Thus, we drew attention to the problem of counterfeit and in particular to the possibility to protect packaging using nanotechnology solutions. Nevertheless, we were able to publish some research results in a way not to reveal certain details of research. In this way we contributed appropriately to the development of science on this specific area.
Significance for the country
The beneficiary of the project is a leading graphics company to produce and distribute protected and personalized printed matter in Slovenia, throughout the South-Eastern Europe and in much of Africa and is among the makers of world trends in the field of documents. It controls the most modern ways of sharing, processing and use of digitized data and security features. Development of new features and the introduction of new technologies is an important upgrade of existing activities in the field of security printing. The results obtained during working on the project represent an important contribution to the development of graphics in our country. The new knowledge in this specific area is the possibility to use the new technologies in a variety of printed products with similar requirements. It enabled unique products and processes, which enable to strengthen the company's position in its area. Interdisciplinary and product-oriented research is also of great importance for the progress of all other branches of science involved in the project. It is worth to point out in particular nanotechnology, research on structuring of hard coatings, nano-optics and research of complex appearance of objects. We have informed our professional and research public about the problems concerned by the project. We draw attention to the problem of protecting products against counterfeiting, which is one of the very important economic elements of which we must be aware. Information about protection possibilities is important for the development of Slovenia, where the small open economy have to protect their products. Particularly relevant are unique ways of protecting small-scale products and identifying counterfeits. Collaboration of researchers from the National Institute of Chemistry and Institute "Jožef Stefan" with researchers from the industry enabled to transfer the latest scientific developments in industry, but researchers from institutes were provided by directions for further research and verification of their findings. The importance of results, which we published in the4 international scientific journals (preparation of micro-periodic structures on metal surfaces with pulse lasers and the existence of the appearance fingerprints) should be stressed in particular, while they represent a great challenge for our research in the future. Great importance is also the education of researchers, both in terms of graphics technology, as well as in all other fields of science that are involved in the research. Participating researchers have made important contributions to the education of the most educated personnel for the beneficiary and, indirectly, for the domestic economy. For the research community, it is important that such interdisciplinary research strengthens the link between domestic and foreign partners with significant partial knowledge in the field. The beneficiary has greatly deepened its cooperation with the Slovenian science, which already exceeds the results obtained within the project. The ongoing cooperation with the Institute "Jožef Stefan" on the protection of printing plates for security printing (great potential importance in the case of a successful patent protection) and doctoral studies under the supervision of beneficiary associate researcher with the Institute "Jožef Stefan" should be pointed out. Cooperation with co-financier Institute of Chemistry also deepened and intensified. Close contact between science and industry ensures the competitiveness of our economy in the long run.
Most important scientific results Annual report 2010, final report, complete report on dLib.si
Most important socioeconomically and culturally relevant results Annual report 2011, final report, complete report on dLib.si
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