A5090538372- Surface Modification and Superhydrophobicity
- Microfluidic and Bio-sensing Technologies
- Microfluidic and Capillary Electrophoresis Applications
- Electrowetting and Microfluidic Technologies
- Innovative Microfluidic and Catalytic Techniques Innovation
- 3D Printing in Biomedical Research
- Silicon and Solar Cell Technologies
- Nanomaterials and Printing Technologies
- Advanced Sensor and Energy Harvesting Materials
- Electrohydrodynamics and Fluid Dynamics
- Adhesion, Friction, and Surface Interactions
- Advanced Surface Polishing Techniques
- Advanced MEMS and NEMS Technologies
- Parasitic Infections and Diagnostics
- Biosensors and Analytical Detection
- Characterization and Applications of Magnetic Nanoparticles
- nanoparticles nucleation surface interactions
- Helminth infection and control
- Cancer Cells and Metastasis
- Analytical Chemistry and Sensors
- Parasite Biology and Host Interactions
- Fluid Dynamics and Thin Films
- Polymer Surface Interaction Studies
- Neuroscience and Neural Engineering
- Semiconductor materials and interfaces
Centre National de la Recherche Scientifique
2013-2023
Inserm
2022-2023
Université de Lille
2009-2023
Laboratory for Integrated Micro-Mechatronic Systems
2004-2023
Tokyo University of Science
2021-2023
CANTHER - Hétérogénéité, Plasticité et Résistance aux Thérapies des Cancers
2022
Centre Hospitalier Universitaire de Lille
2022
Institut d'électronique de microélectronique et de nanotechnologie
2010-2020
Université Lille Nord de France
2009-2020
École Centrale de Lille
2006-2016
Following the achievement of superhydrophobicity which prevents water adhesion on a surface, superomniphobicity extends this high repellency property to wide range liquids, including oils, solvents, and other low surface energy liquids. Recent theoretical approaches have yield specific microstructures design criterion achieve such surfaces, leading superomniphobic structured silicon substrate. To transfer technology flexible substrate, we use polydimethylsiloxane (PDMS) molding process...
Abstract When a drop sits on highly liquid‐repellent surface (super‐hydrophobic or super‐omniphobic) made of periodic micrometer‐sized posts, its contact‐line can recede with very weak mechanical retention providing that the liquid stays top microsized posts. Occurring in both sliding and evaporation processes, achievement low‐contact‐angle hysteresis (low retention) is required for discrete microfluidic applications involving motion self‐cleaning; however, careful examination shows during...
Contact angle hysteresis of liquid droplets is investigated on sticky and flexible super-omniphobic surfaces made up PDMS–Si3N4 microstructures. Up to now, extensive studies have been focusing the relation between surface properties such as roughness or defect density. However, little attention has paid dependence with respect tension. In this work, advancing receding apparent contact angles are measured displaying 4 different densities 10 water–ethanol mixtures (surface energy ranging from...
Conducting polymers such as poly(3,4-ethylenedioxythiophene) polystyrene sulfonate (PEDOT:PSS) are increasingly used to interface electronics with biology. Their wettability, however, remains poorly understood. We show that the frequently-used sessile drop technique yields results strongly dependent on experimental conditions (measurement duration and relative humidity), due hydrogel-like behavior of PEDOT:PSS. In contrast, captive bubble a fully wet film overcomes these limitations. Dynamic...
We have designed and fabricated a microfluidic system made of glass polydimethylsiloxane. A micro-magnetometer has been integrated to the system. This sensor is giant magneto-impedance wire known very high magnetic sensitivity at room temperature. liquid-liquid segmented multiphase flow was generated in channel using Y-shaped inlet junction. The dispersed phase plugs contained superparamagnetic iron oxide (20 nm) nanoparticles molar concentration 230 mmol/l. shown both theoretically...
Ex vivo explant culture models offer unique properties to study complex mechanisms underlying tissue growth, renewal, and disease. A major weakness is the short viability depending on biopsy origin preparation protocol. We describe an interphase microfluidic system cultivate full thickness murine colon explants which keeps morphological structures of up 192 h. The was composed a central well top porous membrane supported by microchannel structure. perfusion allowed bathing serosal side while...
Many applications involving superhydrophobic materials require accurate control and monitoring of wetting states transitions. Such is usually done by optical methods, which are neither versatile nor integrable. This letter presents an alternative approach based on acoustic measurements. An transducer integrated the back side a silicon surface water droplets deposited. By analyzing reflection longitudinal waves at composite liquid-solid-vapor interface, we show that it possible to track local...
Cryptosporidium parvum is a major cause of diarrheal illness and was recently potentially associated with digestive carcinogenesis. Despite its impact on human health, pathogenesis remains poorly known, mainly due to the lack long-term culture method for this parasite. Thus, aim present study develop three-dimensional (3D) model from adult murine colon allowing biological investigations host-parasite interactions in an vivo-like environment and, particular, development parasite-induced...
We present an experimental study of stick-jump (SJ) evaporation strongly pinned nanoliter volume sessile water droplets drying on micropatterned surfaces. The is studied surfaces composed photolithographically negative photoresist (SU-8). micropatterning the SU-8 enables circular, smooth, trough-like features to be formed which causes a very strong pinning three phase (liquid-vapor-solid) contact line evaporating droplet. This ideal for studying SJ as it contains sequential constant radius...
Micropatterned surfaces composed of concentric circular defects having a smooth trench-like profile are formed using photoresist (SU-8). When an evaporating droplet encounters the micropatterned surface evaporation phase is observed consisting distinct discontinuities and steps in wetting contact angle base radius respectively. The addition gaps into enables tuning hysteresis; receding fluorocarbon coated SU-8 can be tuned between 34.6{\deg} 89.1{\deg} that from 5.6{\deg} to 43.3{\deg}...
This paper presents the detection of magnetic nanoparticles flowing into a microchannel using giant impedance (GMI) microwire sensor made up CoFeSiBNb alloy (40 μm diameter and 1 cm long wire). Detection tests were performed UltraSmall Particles Iron Oxyde (USPIO) with 20 nm. volume 180 nl concentration 18 mmol (Fe)/l flow rate 260 nl/s was performed. Such type measurement can find application in biomedical clinical diagnosis for vivo noninvasive detection.
Nanostructure wetting is a key problem when developing superhydrophobic surfaces. Conventional methods do not allow us to draw conclusions about the partial or complete of structures on nanoscale. Moreover, advanced techniques are always compatible with an in situ, real time, multiscale (from macro nanoscale) characterization. A high-frequency (1 GHz) acoustic method used for first time characterize locally and transition between nanostructures according surface tension liquids (the...
We present a physically based modeling of the transient enhanced diffusion (TED) boron implanted into preamorphized silicon. start by describing nucleation and growth supersaturation Si interstitial atoms dislocation loops. Our loops is divided three distinct stages: nucleation, “pure growth,” Ostwald ripening. The implementation this process simulator IMPACT-4 allows one to correctly predict size density evolutions observed transmission electron microscopy for variety annealing times...
A microtechnology allowing the integration of thin metal electrodes and three dimensional highly doped bulk silicon on a hybrid PDMS/glass fluidic microchip has been developed. The fabrication involved anodic bonding wafer onto glass substrate, deep reactive ion etching 3-D electrodes, plasma PDMS microfluidic structure silicon/gold/glass substrate. devices realized using this technology have used for electrical impedance characterization chemical biological material. Microdevices with...
In this work, we propose acoustic characterization as a new method to probe wetting states on superhydrophobic surface. The analysis of the multiple reflections longitudinal wave from solid-liquid and solid-vapor interfaces enables distinguish between two well known Cassie-Baxter Wenzel configurations. phenomenon is investigated experimentally silicon micro-pillars surfaces numerically using finite difference time domain method. Numerical calculations reflection coefficients show good...
We demonstrate micropatterned surfaces consisting of concentric circles and spirals which can focus an evaporating sessile droplet to a specific location on surface. also study the micropattern geometry microparticles contained within droplet. The are fabricated using photoresist SU-8. Our process enables modification surface wetting via formation smooth trench-like defects in SU-8 define micropatterns; these micropatterns determines droplet/microparticle focusing. It is clearly shown that...
Abstract This article aims to show the influence of surface characteristics (microtopography, chemistry, mechanical properties) and seawater parameters on settlement marine micro‐ macroorganisms. Polymers with nine microtopographies, three distinct properties, wetting are immersed for one month into two contrasting coastal sites (Toulon Kristineberg Center) seasons (Winter Summer). Influence microtopography chemistry is assessed through static contact angle captive air bubble measurements...
Journal Article Alteration of pancreatic carcinoma and promyeloblastic cell adhesion in liver microvasculature by co-culture hepatocytes, hepatic stellate cells endothelial a physiologically-relevant model Get access Mathieu Danoy, Danoy LIMMS/CNRS UMI2820 Institute Industrial Science, The University Tokyo, 4-6-1 Komaba, Meguro-ku, Tokyo 153-8505, JapanInstitut d'Electronique, de Microélectronique et Nanotechnologies (IEMN), Université Lille, CNRS, ISEN, UMR 8520, F-59000 France E-mail:...