A5081337453- Electrical and Thermal Properties of Materials
- Ferroelectric and Piezoelectric Materials
- Microwave Dielectric Ceramics Synthesis
- Acoustic Wave Resonator Technologies
- Advanced ceramic materials synthesis
- Advanced Condensed Matter Physics
- Electrochemical Analysis and Applications
- Additive Manufacturing and 3D Printing Technologies
- Polymer Science and PVC
- Dielectric properties of ceramics
- Pigment Synthesis and Properties
- Water Quality Monitoring Technologies
- Electronic and Structural Properties of Oxides
- Catalysis and Oxidation Reactions
- Magnetic and transport properties of perovskites and related materials
- Advanced Sensor Technologies Research
- Analytical Chemistry and Sensors
- Thermal and Kinetic Analysis
- Innovations in Concrete and Construction Materials
- Multiferroics and related materials
Jožef Stefan Institute
2010-2024
Centre of Excellence NAMASTE
2011-2023
Keko Equipment (Slovenia)
2016-2023
Jožef Stefan International Postgraduate School
2013-2015
In this work the effect of firing temperature and time on phase composition, microstructure, biaxial flexural strength, coefficient expansion ( TCE ) low‐temperature cofired ceramic LTCC material is presented. At temperatures around 700°C Al 2 O 3 starts to dissolve in a low viscosity glass takes place up 800°C, when 10 wt% filler dissolved forming alumina‐enriched area. This area suitable for crystallization anorthite, which nucleates particles. The at 875°C mass fraction anorthite...
Ceramic baseplates are important elements in the power modules of electric drives. This paper presents low-temperature cofired ceramic (LTCC) and high-temperature (HTCC) materials for fabrication three-dimensional modules. The silver-based metallization module assembly presented, together with aluminum-based wire bonding an industrial procedure to achieve high solderability bondability. results bond tests using different materials, especially cost-effective ones, best were achieved Ag 380 µm...
One of the possibilities for achieving portable power systems is a low-temperature fuel-cell system integrated with fuel processor. A processor needed to make hydrogen from liquid fuels (mainly methanol), as required PEM (polymer-electrolyte membrane) cells. The LTCC (Low Temperature Co-fired Ceramics) technology was used prepare prototypes microreactors steam reforming water into hydrogen. 3D structures buried cavities and channels, including two evaporators (fuel water), mixing chamber,...
Purpose – The purpose of this paper is to present the research activity and results development society on field ceramic microsystems. Design/methodology/approach chemical reactor was developed as a non-conventional application low temperature co-fired (LTCC) thick-film technologies. In with large-volume, buried cavity, filled catalyst, reaction between water methanol produces hydrogen carbon dioxide (together traces monoxide). LTCC three-dimensional (3D) structure consists chamber, two...
For the fabrication of complex, micro‐electromechanical systems ( MEMS ) devices based on low‐temperature co‐fired ceramic LTCC ), higher firing temperatures and longer times than those proposed by producer are needed. These changes to thermal budget may influence material properties consequently its functional properties. The effect conditions DuPont 951 thus phase composition, that is, alumina/anorthite ratio porosity, mechanical is presented. samples fired at low (800°C) had a high...
In this contribution the design and fabrication of ceramic microsystems with integrated different microfluidic elements sensors will be presented. Ceramic are based on unconventional application low-temperature co-fired technology materials. This is related to three-dimensional structures, such as cantilevers, ledges, bridges, diaphragms, valleys, channels, holes cavities, valves, mixers, diffusors, distributors, collectors, flow limiters, sensors, actuators.
Advanced microsystems or macrosystems are in some cases made with multilayer ceramic technology. Low-temperature cofired (LTCC) technology is considered to be one of the more suitable technologies for fabrication that integrate screen-printed, thick-film electronic components as well three-dimensional buried structures, example, cavities and channels. One applications a combustor. The chemical energy fuel converted into thermal microcombustor through burning process, while accompanying high...
This publication provides the results of material characterization and binder burnout studies commercially available ferrite LTCC (Low Temperature Co-fired Ceramics) tape ESL 40012 used for integrated passive components in packages. The investigations comprised surface roughness measurements fired chemical analysis green tapes as well at different peak temperatures by X-ray powder diffraction (XRD) energy dispersive spectroscopy (EDXS) analysis. Furthermore, thermogravimetric (TGA) air...
The development process for complex 3D ceramic structures in the integrated evaporator, mixer, reformer and combustor (EMRC) system production of hydrogen needed portable polymer-electrolyte membrane (PEM) fuel cells is presented. Low-temperature co-fired (LTCC) technology was used to fabricate system. started with design fabrication each separate (stand-alone) component, which developed tested, then optimized fulfill requirements EMRC final structure consists 45 LTCC tapes (Du Pont 951PX)....
The design, fabrication and functional evaluation of the radio-frequency dielectric heating liquids in an LTCC-based ceramic microfluidic system are described discussed. device, which relies on liquids, was fabricated using a low temperature co-fired (LTCC) technology. A multilayered structure with integrated electrodes, buried channels cavities micro millimetre scales fabricated. dimensions 35 mm × 22 2.4 includes cavity diameter 17.3 volume 0.3 mL. top bottom faces consist silver/palladium...
The ceramic micro electro-mechanical systems (C-MEMS) are fabricated in most cases by low-temperature co-fired ceramics (LTCC). sensors of mechanical quantities fundamental parts MEMS, and thick-film resistor can sense deformations the C-MEMS structures. Relatively low elastic moduli LTCC as compared to alumina imply an increased sensitivity sensing elements. Selected thick film resistors (Du Pont 2041 ESL 3414) were evaluated piezo-resistors for force sensors. was chosen because its noise,...
Advanced micro- or macro-systems are in some cases made with multilayer ceramic technology. Low-Temperature Co-fired Ceramic (LTCC) technology is considered as one of the more suitable technologies for fabrication micro-systems that integrate screen-printed, thick-film electronic components well three-dimensional buried structures, example, cavities and channels. One applications a combustor. The chemical energy fuel converted into thermal micro-combustor through burning process, while...
In this work the screen-printed piezoelectric 0.65Pb(Mg <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">1/3</sub> Nb xmlns:xlink="http://www.w3.org/1999/xlink">2/3</sub> )O xmlns:xlink="http://www.w3.org/1999/xlink">3</sub> -0.35PbTiO thick films were prepared on metalized low-temperature co-fired ceramic substrates. Such substrates are interesting for micro-electro mechanical systems, example sensors and actuators. The exhibit coefficient d...
The influence of the processing conditions on structural properties a selected LTCC material (Du Pont 951) was studied. samples were fired at different temperatures; after which, unfired and tapes characterized by X-ray powder diffraction analysis (XRD) scanning electron microscopy (SEM). XRD patterns then refined using Rietveld method, with an internal standard being used to quantify ratio between crystalline amorphous components. results show that this tape is composed alumina, as ceramic...