... Paweł Bembnowicz, Karol Malecha ... OSo is the output digital signal measured for distilled water and OS(c) is the output digital signal level obtained for concentration c. The experimental setup consisted of a synergy pump (Braun), a... more
... Paweł Bembnowicz, Karol Malecha ... OSo is the output digital signal measured for distilled water and OS(c) is the output digital signal level obtained for concentration c. The experimental setup consisted of a synergy pump (Braun), a DC power supply (Hewlett-Packard) and a PC ...
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... [1] Valentin T. Jordanov, John R. Macri, James E ... 96, (2002), pp. 59-66, [4] LJ Golonka, H. Roguszczak , T. Zawada, J. Radojewski, I. Grabowska, M. Chudy, A. Dybko, Z. Brzozka, D. Stadnik, "LTCC based microfluidic system... more
... [1] Valentin T. Jordanov, John R. Macri, James E ... 96, (2002), pp. 59-66, [4] LJ Golonka, H. Roguszczak , T. Zawada, J. Radojewski, I. Grabowska, M. Chudy, A. Dybko, Z. Brzozka, D. Stadnik, "LTCC based microfluidic system with optical detection", Sensors and Actuators B, Vol. ...
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This paper presents influence of fluidic inlet and outlet spacing on light transmission inside channel. To consider this issue three various LTCC (Low Temperature Co-fired Ceramics) based fluidic microsystems for light... more
This paper presents influence of fluidic inlet and outlet spacing on light transmission inside channel. To consider this issue three various LTCC (Low Temperature Co-fired Ceramics) based fluidic microsystems for light transmittance/absorbance measurements were designed and manufactured. The main distinction between these micro-devices was a way of fluidic inlet and outlet connection to the optical channel. Significant differences of output signal for each structure were noticed. To explain this phenomenon a CFD (Computational Fluid Dynamics) simulations were done.
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A new fiber-based optical microfluidic detector was designed for low-volume sample measurement. Microdetector was fabricated by use of LTCC (low temperature co-fired ceramic) technology. The microdevice was made as separate module, which... more
A new fiber-based optical microfluidic detector was designed for low-volume sample measurement. Microdetector was fabricated by use of LTCC (low temperature co-fired ceramic) technology. The microdevice was made as separate module, which can be connected via tubing to any microanalytical system. The designed detector allowed to measure an optical absorbance (transmittance) in the analytical channel. Presented microfluidic detector can be
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... of certain channels made by the use of carbon-black paste. The contamination was associated with the burnout and firing process. These research and development results demonstrate the feasibility of construction of various... more
... of certain channels made by the use of carbon-black paste. The contamination was associated with the burnout and firing process. These research and development results demonstrate the feasibility of construction of various microfluidic system structures using LTCC ceramics. ...
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ABSTRACT In this paper, we have studied the influence of the pressure and type of latex binder on the lamination process. All experiments were performed at room temperature (25 oC) using four different lamination pressures (5, 10, 15 and... more
ABSTRACT In this paper, we have studied the influence of the pressure and type of latex binder on the lamination process. All experiments were performed at room temperature (25 oC) using four different lamination pressures (5, 10, 15 and 20 MPa). Two different alumina tapes developed by Swerea IVF were taken into account. The examined tapes contained different latex binder systems (LDM 7651S or Resicel E50). The quality of the laminated structures were analyzed before and after firing using optical microscopy. Moreover, the influence of the lamination pressure on the structures’ surface roughness was investigated using profile measurements gauge. The performed experiments have shown which combination of lamination pressure and type of latex binder is the best to obtain defect-free multilayer ceramic structures.
ABSTRACT In this paper, we have studied the influence of the pressure and type of latex binder on the lamination process. All experiments were performed at room temperature (25 oC) using four different lamination pressures (5, 10, 15 and... more
ABSTRACT In this paper, we have studied the influence of the pressure and type of latex binder on the lamination process. All experiments were performed at room temperature (25 oC) using four different lamination pressures (5, 10, 15 and 20 MPa). Two different alumina tapes developed by Swerea IVF were taken into account. The examined tapes contained different latex binder systems (LDM 7651S or Resicel E50). The quality of the laminated structures were analyzed before and after firing using optical microscopy. Moreover, the influence of the lamination pressure on the structures’ surface roughness was investigated using profile measurements gauge. The performed experiments have shown which combination of lamination pressure and type of latex binder is the best to obtain defect-free multilayer ceramic structures.
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ABSTRACT In this paper, we have studied the influence of the pressure and type of latex binder on the lamination process. All experiments were performed at room temperature (25 oC) using four different lamination pressures (5, 10, 15 and... more
ABSTRACT In this paper, we have studied the influence of the pressure and type of latex binder on the lamination process. All experiments were performed at room temperature (25 oC) using four different lamination pressures (5, 10, 15 and 20 MPa). Two different alumina tapes developed by Swerea IVF were taken into account. The examined tapes contained different latex binder systems (LDM 7651S or Resicel E50). The quality of the laminated structures were analyzed before and after firing using optical microscopy. Moreover, the influence of the lamination pressure on the structures’ surface roughness was investigated using profile measurements gauge. The performed experiments have shown which combination of lamination pressure and type of latex binder is the best to obtain defect-free multilayer ceramic structures.
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ABSTRACT
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The structuring of ceramic green tapes is a possibility to build up microsystems with structural and functional (electrical and sensorial) elements. The geometrical structuring is generally done either by punching or by laser cutting... more
The structuring of ceramic green tapes is a possibility to build up microsystems with structural and functional (electrical and sensorial) elements. The geometrical structuring is generally done either by punching or by laser cutting processes with subsequent lamination to multilayer components. Within the EC-LARGE-Project MULTILAYER a micro fluidic demonstrator assembly is manufactured. Therefore, alumina green tapes for cold embossing have been developed and optimized. Cold embossing allows reducing process time to a minimum limit accompanied by a good reproducibility. The green tapes were made by using water based binder systems, which guarantee an environmental and user-friendly use. Investigating the mechanical behaviour of the green tapes was done by tensile testing and embossing under different conditions. Further the green tapes were treated with laser ablation. Both structuring methods will be compared to each other. The third complex theme, presented here, is the filling o...
The paper presents general information on ceramic microsystems. LTCC (Low Temperature Cofired Ceramics) technology is described more detailed. Research and development on the LTCC sensors and microsystems carried out at Wrocław University... more
The paper presents general information on ceramic microsystems. LTCC (Low Temperature Cofired Ceramics) technology is described more detailed. Research and development on the LTCC sensors and microsystems carried out at Wrocław University of Technology are presented. Microfluidic system, PCR (Polymerase Chain Reaction) microreactor, acceleration sensor and sol-gel fiber optics for ceramic microsystems are described.
ABSTRACT A ceramic-based miniature biosensor was designed and constructed through the immobilization of laccase in an electrochemically synthesized copolymer N-hexylacridone derivative, based on low temperature co-fired ceramics... more
ABSTRACT A ceramic-based miniature biosensor was designed and constructed through the immobilization of laccase in an electrochemically synthesized copolymer N-hexylacridone derivative, based on low temperature co-fired ceramics technology (LTCC). This sensing system can be suitable for the permanent monitoring of water solutions (i.e. presence of phenolics). The laccase, from Cerrena unicolor, was successfully immobilized (by adsorption) on the surface of the thin polymer film built from 2,7-bis(thiophene)-N-hexylacridone, covering the microreaction chamber. The detection process was based on the oxidation of substrate in the presence of the enzyme-laccase. The response of the biosensing system was evaluated in the presence of ABTS (ammonium salt of 2,2'-azino-bis(3-ethylbenzthiazoline-6-sulphonic acid)), used as an enzymatic assay substrate. The system exhibited clear catalytic activity, and the substrate could be optically determined.
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ABSTRACT The aim of the research was to develop an enzymatic, optical biosensor which provides quick and convenient determination of phenolic compounds in aqueous solutions. The biosensing strategy concerns design, fabrication and testing... more
ABSTRACT The aim of the research was to develop an enzymatic, optical biosensor which provides quick and convenient determination of phenolic compounds in aqueous solutions. The biosensing strategy concerns design, fabrication and testing of a miniature ceramic-based biosensor which is destined for in-situ substrate monitoring. The base of the measuring system was fabricated using low temperature co-fired ceramics (LTCC) technology. The biocatalyst – laccase– was immobilized on the thin film of poly[N-nonyl-3,6-bis(ethylenedioxythiophene)carbazole] which provided good binding of the enzyme to the substrate and positively affected on the catalytic activity of the protein. In order to evaluate properties of the designed biosensor, its response for various concentrations of 2,2′-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) diamonnium sal (ABTS) was measured. The optical biosensor produced by presented method could find applications in many fields, i.e. for detection of phenolic compounds in food products and beverages, in industry for control of technological processes or for environmental monitoring
Research Interests: Biosensors, Thin Films, Ceramics, Fabrication, Proteins, and 3 moreBiosensing, BioSensors, and Matrices
ABSTRACT This paper presents design, fabrication and testing of three LTCC (Low Temperature Co-fired Ceramics) based microfluidic systems. These microdevices are: enzymatic microreactor for urea determination, potentiometric sensor with... more
ABSTRACT This paper presents design, fabrication and testing of three LTCC (Low Temperature Co-fired Ceramics) based microfluidic systems. These microdevices are: enzymatic microreactor for urea determination, potentiometric sensor with ion selective electrodes (ISE) based array sensitive to potassium ions and amperometric glucose sensor. Performance of the presented LTCC-based microfluidic systems has been tested. All ceramic microdevices have revealed high output signal and large detection range. The properties of the presented LTCC-based microfluidic systems are comparable with similar ones made of silicon. Obtained results has shown that presented ceramic microsystems can work as a stand-alone device or can be integrated into a more sophisticated micro analysis system for in vivo or in vitro monitoring of various (bio)chemical compounds.