Projects / Programmes
Electronic ceramics, nano, 2D and 3D structures
January 1, 2004
- December 31, 2008
| Code |
Science |
Field |
Subfield |
| 2.09.00 |
Engineering sciences and technologies |
Electronic components and technologies |
|
| 2.04.00 |
Engineering sciences and technologies |
Materials science and technology |
|
| Code |
Science |
Field |
| T153 |
Technological sciences |
Ceramic materials and powders |
| T170 |
Technological sciences |
Electronics |
electronic ceramics, synthesis, ferroelectrics, conductive oxides, nanostructures, 2D-structures, 3D-structures, electronic components, miniaturisation, hybrid circuits, sensors, actuators
Researchers (22)
Organisations (1)
| no. |
Code |
Research organisation |
City |
Registration number |
No. of publicationsNo. of publications |
| 1. |
0106 |
Jožef Stefan Institute |
Ljubljana |
5051606000 |
90,753 |
Abstract
Electronic ceramics are used in a wide range of applications, for example, in industrial processing and process control, robotics, multimedia, telecommunications, medical diagnostics and therapy. The general trend in development has been towards miniaturization, increased complexity and reliability. There is an emphasis on environmental factors. These aims will be reached by developing materials with improved characteristics as well as technologies that will enable the fabrication of complex, miniaturized 2D and 3D structures and devices.
Improved, or new, ferroelectric materials based on lead perovskites, environment-friendly materials based on alkaline and earth-alkaline niobates and tantalates, and electrically conducting complex perovskites will be prepared. Solid-state synthesis, mechanochemical synthesis, synthesis based on water suspensions and the solution synthesis of complex ceramics will be studied. Materials will be processed as nanoparticles, thin and thick films on various substrates (2D and 3D structures), and bulk ceramics. The process in hybrid thick-film technology will be studied. The processing parameters, structural and functional characteristics of materials will be correlated.
Significance for science
The Program presents the results on research of new materials or materials with improved properties, mainly piezoelectrics and tunable ferroelectrics (i.e. with electric-field dependent permittivity) with focus on lead-free compositions and conducting oxides. The main impact is on: Understanding composition – structure – functional properties relationship. Understanding of fundamental problems of decreasing the dimensions and integration of ceramic materials: comparison of properties of bulk ceramics, thick- and thin films, and composites, separation of intrinsic and extrinsic contributions. Contribution to understanding of mechanisms of selected processes, including mechanochemical synthesis of particles, solid state single crystal growth, chemical solution deposition, synthesis at low temperature. Better know-how of selected methods, such as electrophoretic deposition and ink-jet printing. Properties of LTCC structures, ceramics MEMS, pressure sensors and ultrasound medical transducers. Some specific important selected results include. - Contribution to the synthesis, sintering and functional properties of lead free piezolectrics based on alkaline niobates. - Discovery of a new group of lead free relaksors - Lead free transparent EO ceramics prepared for the first time - First example of single crystal lead free piezolectrics prepared by SSCG method - modeling and quantification of high energy milling, understanding of the reaction taking place during milling and synthesis of high performing lead free piezoelectric ceramics using this methods - Contribution to the understanding of thin film ferroelectric prepared by Chemical Solution Deposition (CSD) - Synthesis of lead zirconate titanate (PZT) thin films by CSD at extremely low temperatures namely 400oC - CSD synthesis of barium strontium titanate (BST) thin films with very high tunability and low dielectric losses. Preparation of thin film BST capacitor and its integration in phase shifter. - New design, modeling an preparation of medical ultrasound transducers and pressure sensors in piezo MEMS
Significance for the country
We believe that our research programme is important for Slovenia for the following reasons. The research group is involved in research and development of special ceramic materials, hybrid microelectronics and ceramic micro-electro-mechanical systems (C-MEMS). The results of our research are an important source of knowledge for applied and development projects and they are useful for both producers and users. The group has traditionally good collabortion with small and medium-sized enterprises (HYB d.o.o., HIPOT-RR, d.o.o., ETI Izlake d.d., BSH Hišni aparati d.o.o., ISKRATEL, d.o.o., ISKRAEMECO, d.d.). The group has collaborated with the companies HYB d.o.o. and HIPOT-RR, d.o.o., for more than 35 years with annual contracts in the fields of thick-film technology, hybrid thick-film circuits and sensors. Some colleages from HIPOT-RR, d.o.o. (recently three) permanently work in the mixed research and development group in the frame of Electronic ceramics department, Jožef Stefan Institute. Right now they are introducing LTCC technology for pressure sensors into production, as a result of a long-term research and development work of the two groups. Beside direct contracts it is worthwhile to mention joint participation in EU projects. Together with the company HYB we have collaborated in four 6FP projects. One of the products, which is now transferred to production, is the resonance pressure sensor. Its prototype has been developped jointly by HIPOT RR, d.o.o., HYB, d.o.o., and JSI in the 6 FP project MINUET. It is important for us to initiate collaborations in new areas, such as textiles industry (Tekstina Ajdovščina) where electronics are gaining importance (smart textile). Head of the programme group Marija Kosec is also head of Centre of excellence Materials for electronics of next generations and other emerging technologies founded in 2004 with participation of ten companies. Coworkers of the group are active mebers of Technology centre SEMTO - centre for circuits, components, materials, technologies and equipment for electrotechnics, which includes companies from electronic industry, Universities of Ljubljana and Maribor and R&D groups and is mainly focused on research and development, advising, education, informational and promotional work in the field. In 2005 they co-organized Conference on measurements (»Posvet o meritvah«, Ljubljana, 10.-11. 11. 2005), and in 2006 Conference on advanced materials (»Posvet o naprednih materialih« Ljubljana, 16.-17. 11. 2006). The programmes and abstracts are available at http://www.zavodtcsemto.si/). In 2008 SEMTO and Centre of excellence jointly organised Conference SEMTO 2008 Sensors and Actuators (Senzorji in aktuatorji, chair: Prof. Marija Kosec, 4.-5-. 6. 2008). Members of the programme group are active in the MIDEM society and permanet members of organising and editorial comittees of the international Conference on Microelectronics, Electronic Components and Materials. The prrogramme is the background for study of ceramics at the Faculty for natural sciences and engineering University of Ljubljana and post-graduate study at Jožef Stefan International Postgraduate School. The coworkers are lecturers of one graduate and six post-graduate courses. European association PIEZOINSTITUTE is being established by the network of excellence MIND and the programme group is one of the eight founding members with key roles in promotion of education We hope to attract even more students.
Most important scientific results
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Most important socioeconomically and culturally relevant results
Final report,
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