Fouling is a widespread and costly issue, faced by all food-processing industries. Particularly, in the dairy sector, where thermal treatments are mandatory to ensure product safety, heat-induced fouling represents up 80% of total production costs. Significant environmental impacts, due massive consumption water energy, also deplore. control solutions thus desperately needed, as they would lead substantial financial gains well tremendous progress toward eco-responsible processes. This work...

We report on an adjustable interferometric set-up for Scanning Microwave Microscopy. This interferometer is designed in order to combine simplicity, a relatively flexible choice of the frequency interference used measurements as well impedances range where occurs. A vectorial calibration method based modified 1-port error model also proposed. Calibrated capacitors have been obtained around test 3.5 GHz down about 0.1 fF. Comparison with standard vector network analyzer shown assess...

This paper presents a feasibility step in the development of an ultra-small biomimetic flying machine. Advanced engineering technologies available for applications such as micro-electro-mechanical system (MEMS) are used. To achieve this goal, flapping-wing MEMS concept and design inspired from insects is first described. Actuators actuation way control over wing kinematics proposed. The initial concepts subsequently analyzed presented using multi-body finite element models. An overview SU-8...

Abstract Organic electrochemical transistors are considered today as a key technology to interact with biological medium through their intrinsic ionic‐electronic coupling. In this paper, the authors show how coupling can be finely tuned (in operando) post‐microfabrication via electropolymerization technique. This strategy exploits concept of adaptive sensing where both transconductance and impedance tunable modified on‐demand match different requirements. Material investigation Raman...

This paper presents the micromachining of SU-8 pivot structures. A new processing method was proposed using AZ 4562 as sacrificial layers to create a controlled air gap in region. These three-dimensional structures are designed obtain large wing displacement bio-mimetic flying micromachine. Several methods used for fabrication were reviewed and compared. process featuring developed. Two relevant effects, scission outgassing greatly weakened acquire better SU-8/AZ interface. It found that...

The mechanical properties of single flax fibers are characterized here as a function dew retting. measured using micromechanical and nanomechanical techniques over large retting period (91 days). Damage-free in various stages were manually extracted from retted plant stems. flexural modulus strength the determined methods. effective outer surface was AFM-based nanoindentation. methods revealed that does not vary significantly progresses. two distinct values attributed to different failure...

Abstract The dynamic response of a structure is manifestation its inherent characteristics, including material density, mechanical modulus, thermo- and viscoelastic properties, geometric properties. Together, these factors influence how the behaves in scenarios, dictating damping properties behaviour under varying forces. In this study we present novel approach to accurately determine flexural (bending) modulus microscopic diameter natural fibres (flax) using microcantilever vibration...

This paper presents a first stage in developing robot at the size of an insect by using exclusively advanced technologies microelectronics. The concept vibrating wing with passive torsion is validated comparisons between theoretical and experimental approaches on schematic geometry single wing. structural aerodynamic aspects are separated weakly coupled formulation. In this represented beam L shape. Vibrations large displacements bending-torsion obtained expected frequency well adapted...

Electromagnetic frequencies up to a few terahertz (THz) can yield real-time and noninvasive measurements on biological matter. Unfortunately, strong absorption in aqueous solutions low spatial resolution return difficult free-space investigations. A new approach based integrated THz circuits was used. The authors designed fabricated BioMEMS (Biological MicroElectro-Mechanical System) compatible with microfluidic circulation electromagnetic propagation. It is dedicated the ex vivo detection...

The purpose of this paper is to report the design, fabrication and characterization silicon-based microfluidic channels with superhydrophobic walls for energy harvesting. We present step silicon based streaming current harvester nanostructuration microchannel walls. characterize properties surface in a closed system. Our preliminary results on electrical device show 43% increase power harvested our compared planar hydrophobic surface.

Convolutional neural networks (CNN) have established state-of-the-art performance in computer vision tasks such as object detection and segmentation. One of the major remaining challenges concerns their ability to capture consistent spatial attributes, especially medical image A way address this issue is through integrating localization prior into system architecture. The CoordConv layers are extensions convolutional network wherein convolution conditioned on coordinates. This paper...

We report on the comparison between two different driving circuits for addressing micro-fabricated organic electrochemical transistors of channel resistances and transconductance, aiming neuromorphic sensing. The Wheatstone bridge configuration shows interesting results by offering more versatility towards higher resistance materials. However, Current-Voltage converter observed faster transients. Both show assets very encouraging further practical application.

We have developed an adjustable Interferometer combined to a Scanning Microwave Microscopy (ISMM) characterize the impedance of thousands nanocapacitors. The interferometer allows choice interference frequency within ± 50 MHz as well range where occurs. Calibration is investigated using metal-insulating-semiconductor capacitances. ISMM quantitative characterization tiny capacitors with size reaching sub-10 nm and capacitance value around aF limit resolution about 0.5 at 7.8 GHz. A water...

Organic Electrochemical Transistors are considered today as a key technology to interact with biological medium through their intrinsic ionic-electronic coupling. In this paper, we show how coupling can be finely tuned (in operando) post-microfabrication via electropolymerization technique. This strategy exploits the concept of adaptive sensing where both transconductance and impedance tunable modified on-demand match different requirements. Material investigation Raman spectroscopy, atomic...

Les notions principales rencontrées en microfluidique sont mises lumières dans ce module. Après une introduction générale sous forme de cours magistraux, les étudiants confrontés à des problèmes dimensionnement microcanaux l’aide du logiciel COMSOL Multiphysique®. La suite l’enseignement est dédiée la réalisation et caractérisation canaux microfluidiques. fabrication effectuée au sein salle blanche CNFM Lille par technique réplication polymères. également sensibilisés aux questions...