References of "Stoukatch, Serguei"
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See detailDroplet synchronization in multiple interconnected parallel channels
Van Loo, Stéphanie ULg; Stoukatch, Serguei ULg; Gilet, Tristan ULg

Poster (2014, July)

In droplet microfluidics, the pairing of droplets in parallel channels is sometimes required, e.g. to control their encounter and to promote their coalescence. Prakash and Gershenfeld [1] showed that ... [more ▼]

In droplet microfluidics, the pairing of droplets in parallel channels is sometimes required, e.g. to control their encounter and to promote their coalescence. Prakash and Gershenfeld [1] showed that passive synchronization could be achieved with bubbles in a ladder-like channel network. Bubbles flow in the rails and induce recirculation in the interconnecting rungs, which supposedly provides the feedback and subsequent synchronization. Ahn et al. recently extended this study to trains of droplets in flow-rate-driven conditions [2]. We here present an extensive experimental and theoretical investigation of droplets synchonization in multiple parallel channels. Droplets are produced with independent flow-focusing structures. Several experimental conditions are tested, including several geometries (and subsequent flow resistance) and inlet conditions (pressure-driven vs. flow-rate-driven). An extension to three rails is also considered. The microfluidic chips are designed with the help of a lumped-element model in which droplets are driven by the flows. [1] M. Prakash and N. Gershenfeld, Science 2007, 315, 832-835 [2] Ahn et al., Lab-on-a-chip, 2011, 11, 3956-3962 [less ▲]

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See detailWearable respiratory belt for human breathing control
Stoukatch, Serguei ULg; Léonard, Jean; Bellier, Pierre ULg et al

in Conf. Proc. Smart Systems Integration Conf. (SSI2014) (2014, March 12)

We designed and manufactured a working prototype of a wearable respiratory belt. The belt can work as a stand along system or can be embedded into clothes. The system is intended for remote health ... [more ▼]

We designed and manufactured a working prototype of a wearable respiratory belt. The belt can work as a stand along system or can be embedded into clothes. The system is intended for remote health monitoring (particularly to monitor human respiration) such as home healthcare, remote medicine and remote socio-medical assistance as well as to monitor patients. The fully functional prototype proofs the concept that the elongation in the respiratory belt causes by human respiration is accurate enough to measure and to monitor human respiration. [less ▲]

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See detailAutonomous Micro-platform for Multi-sensors (AMM)
Laurent, Philippe ULg; Stoukatch, Serguei ULg; Maillard, Nicolas ULg et al

Scientific conference (2013, October 18)

The AMM is a development tool for integration of various off-self-sensors in one miniaturized device (1cm³). It can be used for wide variety applications such: industrial, buildings, healthcare and others ... [more ▼]

The AMM is a development tool for integration of various off-self-sensors in one miniaturized device (1cm³). It can be used for wide variety applications such: industrial, buildings, healthcare and others. In normal environmental conditions, the autonomy is achieved by photovoltaic cell and the sensors are used for monitoring temperature, humidity and light intensity. At harsh environment such as a liquid zinc bath (800°C), the specially developed package allows the system to monitor inputs. [less ▲]

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See detailAutonomous Micro-platform for Multi-sensors (AMM) for wireless monitoring
Laurent, Philippe ULg; Stoukatch, Serguei ULg; Maillard, Nicolas ULg et al

Scientific conference (2013, October 18)

The AMM is a development tool for integration of various off-self-sensors in one miniaturized device (1cm³). It can be used for wide variety applications such: industrial, buildings, healthcare and others ... [more ▼]

The AMM is a development tool for integration of various off-self-sensors in one miniaturized device (1cm³). It can be used for wide variety applications such: industrial, buildings, healthcare and others. In normal environmental conditions, the autonomy is achieved by photovoltaic cell and the sensors are used for monitoring temperature, humidity and light intensity. At harsh environment such as a liquid zinc bath (800°C), the specially developed package allows the system to monitor inputs. [less ▲]

Detailed reference viewed: 12 (4 ULg)
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See detailAutonomous Micro-platform for Multi-sensors integration and wireless monitoring
Laurent, Philippe ULg; Stoukatch, Serguei ULg; Maillard, Nicolas ULg et al

Scientific conference (2013, June 13)

Microsys has developed an Autonomous Micro-platform for Multi-sensors integration (AMM). The AMM is a development tool/platform for integration of various off-self-sensors in one miniaturized device (1cm³ ... [more ▼]

Microsys has developed an Autonomous Micro-platform for Multi-sensors integration (AMM). The AMM is a development tool/platform for integration of various off-self-sensors in one miniaturized device (1cm³). Depends of the sensor choice AMM can be used for various applications such: industrial, buildings, healthcare and others. Using the AMM platform, we developed an autonomous system for monitoring temperature, humidity, vibration, light and light intensity sound level. The autonomy is achieved by photovoltaic cell. In total we fabricated 15 fully functional prototypes. [less ▲]

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See detailChemically resistant encapsulant to enable a novel MEMS fabrication process
Stoukatch, Serguei ULg; Walewyns, Thomas; Tooten, Ester et al

in Conf. Proceedings (2013, June 13)

We have proposed and demonstrated a novel sequence in MEMS fabrication process flow. The novel MEMS fabrication process flow can be shortly described as a “packaging first, MEMS release second”, whereas a ... [more ▼]

We have proposed and demonstrated a novel sequence in MEMS fabrication process flow. The novel MEMS fabrication process flow can be shortly described as a “packaging first, MEMS release second”, whereas a standard process starts form MEMS release and ends up with packaging. The process is explored on a 3D capacitive MEMS sensor (3 x 3 mm²). Unreleased wafer is singulated by sawing on individual dies, then the individual sensor is mounted to the package, wire bonded and encapsulated. Because the sensors are still unreleased there is no damage occurred during the assembly. However the choice for the encapsulant material is not evident. The encapsulant must survive the chemical attack during the MEMS release process (mixture of 73%HF and IPA (isopropanol)), followed by a triple rinse in IPA. We pre-selected 6 different encapsulants: a silicone-, an epoxy- and an urethane-based. At least one encapsulant passed the acceptance criteria: there is no delamination, there is no texture change and the encapsulant maintains a sufficient mechanical adhesion. Additionally to that we measured micro-hardness of the encapsulant before and after the HF release test. We also performed an electrical characterization of the flow meter sensor before and after the HF release and we detected no changes in the sensor’s performance caused by HF exposure. We have proposed and demonstrated a novel sequence for MEMS fabrication. We packaged the sensor first, and performed the release after that. The key enabler for the novel process is the encapsulant which can withstand exposure to the release solution (73%HF:IPA). [less ▲]

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See detailInnovative smart sensors to enhance eco-efficiency of a continuous (steel) production line
Saint-Mard, Michel; Stoukatch, Serguei ULg; Schischke, Karsten et al

in Proc. Conf. of the AMA Association for Sensor Technology (2013, May 15)

The paper aims to demonstrate the benefits for a global approach that allows to define new research directions, new potential industrial markets, and increasing interest from potential users. Combining ... [more ▼]

The paper aims to demonstrate the benefits for a global approach that allows to define new research directions, new potential industrial markets, and increasing interest from potential users. Combining performance, economic and environmental criteria in a joint assessment approach for the target applications of sensor systems, facilitates significantly the communication between service provider and user. The environmental assessment approach for sensor systems will be available as a beta-version online tool tentatively from July 2013 onwards. Interested SMEs are invited to get involved as the LCA to go consortium will provide also a comprehensive mentoring for SMEs [less ▲]

Detailed reference viewed: 16 (3 ULg)
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See detailEvaluation of aerosol jet printing (AJP) technology for electronic packaging and interconnect technique
Stoukatch, Serguei ULg; Seronveaux, Laurent; Laurent, Philippe ULg et al

Conference (2012, September 18)

We evaluated AJP (Aerosol Jet Printing) deposited silver layer on variety of organic substrates for the most common interconnect techniques for electronic packaging. Specifically, we checked if the AJP ... [more ▼]

We evaluated AJP (Aerosol Jet Printing) deposited silver layer on variety of organic substrates for the most common interconnect techniques for electronic packaging. Specifically, we checked if the AJP silver layer can be electrically interconnected by Au and Al wires bonding technique. We also evaluated suitability of AJP silver layer for surface-mount technology (SMT). We performed electrical characterization of the AJP silver layer. [less ▲]

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See detailLow temperature assembly method of microfluidic bio-molecules detection device
Van Loo, Stéphanie ULg; Stoukatch, Serguei ULg; Van Overstraeten-Schlögel, Nancy et al

in Suga, Tadatomo; Takagi, Hideki; Higurashi, Heiji (Eds.) 2012 3rd IEEE International Workshop on Low Temperature Bonding for 3D Integration (LTB-3D 2012) (2012, May 22)

We developed a microfluidic device for the detection of bio-molecules. The active part of the device is a biofunctionalized interdigitated capacitive sensor. The microsystem consists of a sensor on ... [more ▼]

We developed a microfluidic device for the detection of bio-molecules. The active part of the device is a biofunctionalized interdigitated capacitive sensor. The microsystem consists of a sensor on silicon chip, a microfluidic channel formed by photo-patternable resist and a plastic cover. We implemented a low temperature packaging process to assemble the sensor and prevent the biological material from degradation. [less ▲]

Detailed reference viewed: 84 (57 ULg)
See detailMEMS packaging is crucial for system performance and reliability
Saint-Mard, Michel; Stoukatch, Serguei ULg

Scientific conference (2012, March 27)

Detailed reference viewed: 8 (0 ULg)
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See detailChemically resistant encapsulation for MEMS release
Stoukatch, Serguei ULg; Tooten, ester; Axisa, Fabrice ULg et al

Conference (2012, March 21)

We have proposed and explored a novel sequence in MEMS fabrication process flow. The novel MEMS fabrication process flow can be shortly described as a “packaging first, MEMS release second”. We propose to ... [more ▼]

We have proposed and explored a novel sequence in MEMS fabrication process flow. The novel MEMS fabrication process flow can be shortly described as a “packaging first, MEMS release second”. We propose to package the MEMS device first (die mount, wire bonding and encapsulation) and to perform the MEMS release as the last step in the fabrication process flow. The standard route for IC manufacturing is, that the die packaging is the last step [1]. Such approach can’t be directly transferred and used for MEMS fabrication [2]. The main reason for that, that the MEMS device after the release becomes vulnerable to any physical and chemical exposure. Such exposure can occur during transportation, handling or any post-processing (incl. the packaging). [less ▲]

Detailed reference viewed: 9 (0 ULg)
See detailImmunoassay using a biofunctionnalized alumina-coated capacitive biosensor: towards a microfluidic detection of the H5N1 Influenza virus
van Overstraten-Schlogel, Nancy; Depuis, Pascal; Lefévre, Olivia et al

Poster (2011, December 02)

Detailed reference viewed: 18 (7 ULg)
See detailImmununoassay using a biofunctionnalized alumina-coated capacitive biosensor: towards a microfluidic detection of the h5n1 influenza virus
Overstraeten-Schlögel, Nancy; Dupuis, Pascal; Lefévre, Olivia et al

Scientific conference (2011, December 02)

Detailed reference viewed: 13 (5 ULg)
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See detailMicrosys lab: R&D in the field of Microsystem and Packaging technology
Axisa, Fabrice ULg; Stoukatch, Serguei ULg

Scientific conference (2011, November 24)

Detailed reference viewed: 7 (0 ULg)
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See detailImmunoassay using a biofunctionnalized alumina-coated capacitive biosensor: towards a microfluidic detection of the H5N1 Influenza virus
Overstraeten-Schlögel, Nancy; Dupuis, Pascal; Lefévre, Olivia et al

Conference (2011, October 12)

Influenza A viruses cause annual epidemics and occasional pandemics that spread worldwide. The nucleoprotein is essential for the survival of this virus and is thus well-conserved. We developed a ... [more ▼]

Influenza A viruses cause annual epidemics and occasional pandemics that spread worldwide. The nucleoprotein is essential for the survival of this virus and is thus well-conserved. We developed a quantitative electronic biosensor displaying a protein recognition thanks to the covalent grafting of anti-nucleoprotein antibodies. The detection device lies on interdigitated array microelectrodes (IDAM), covered with alumina (Al2O3) to protect the underlying aluminum and enhance the electrical coupling. As the dimensions of the IDAM can determine the sensitivity of the sensor, we processed 4 structures with varying electrode widths and spacings in the same silicon chip and assessed their individual performance. The sensing area of each sensor is 200*200 µm2 and the overall chip-size is 3*3 mm2. The sensor is mounted in a DIL-16-package partially encapsulated by resin. [less ▲]

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See detailMethod of assembly of capacitive bio-sensor for bio-molecules detection
Stoukatch, Serguei ULg; Van Overstraeten-Schlögel, Nancy; Van Loo, Stéphanie ULg et al

Conference (2011, October 11)

We developed a method of assembly for electrical micro-bio-sensor. The system is a part of a micro-fluidic device based on a capacitive biosensor. The bio-sensor is designed for bio-molecules ... [more ▼]

We developed a method of assembly for electrical micro-bio-sensor. The system is a part of a micro-fluidic device based on a capacitive biosensor. The bio-sensor is designed for bio-molecules (specifically DNA and protein) detection, quantification and recognition. Using the developed method we assembled series of fully functional demonstrators. [less ▲]

Detailed reference viewed: 17 (2 ULg)
See detailIC and Microsystem Micro-assembly and Packaging
Stoukatch, Serguei ULg; Saint-Mard, Michel

Scientific conference (2010, March 18)

Detailed reference viewed: 10 (0 ULg)