CEA-LETI – Page 4 – TechConnect Briefs

High Damping Electrostatic System For Vibration Energy Scavenging

Despesse G., Chaillout J.J., Dekkaki I., Jager T., Léger J.M., Vassilev A., Basrour S., Charlot B., CEA-LETI, FR

We report here global simulations and designs of mechanical structures able to recover power over a large spectrum below 100 Hz. Contrary to existing structures tuned on a particular frequency, we have investigated conversion structures [...]

Mechanical Behavior of Micro-Drops in EWOD Systems: drop extraction, division, motion and constraining

Berthier J., Clementz Ph., Jary D., Raccurt O., Claustre P., Peponnet C., Fouillet Y., CEA-LETI, FR

We present a novel contribution to the design of electrowetting microdevices (EWOD) by using an energy minimization approach. Altough the dynamics of motion of microdrops by electrowetting may be rapid, it is shown that, due [...]

An Analytical Model for the Prediction of Microdrop Extraction and Splitting in Digital Microfluidics Systems

Berthier J., Raccurt O., Clementz Ph., Jary D., Claustre P., Peponnet C., Fouillet Y., CEA-LETI, FR

In the preceding text submitted to Nanotech 2005, we have demonstrated that surface tension is the dominant force on liquid microdrops in EWOD microsystems and that the problem is mostly topological. Minimization of the surface [...]

Dimensioning of a New Micro-Needle for the Dispense of Drugs in Tumors and Cell Clusters

Berthier J., Rivera F., Caillat P., Berger F., CEA-LETI, FR

In medical treatment, there is a constant need to deliver active molecules into targeted cells, but this dispense is often difficult and time consuming. For example, in cancerology, it has been shown that active molecules [...]

Methodology for Prediction of Ultra Shallow Junction Resistivities Considering Uncertainties with a Genetic Algorithm Optimization

Renard C., Scheiblin P., de Crécy F., Ferron A., Guichard E., Holliger P., Laviron C., CEA-LETI, FR

The accurate prediction of arsenic activation after spike annealing is mandatory for Ultra Shallow Junction (USJ) sheet resistance optimization for advanced NMOS transistors engineering. For the first time, we propose a fast and efficient methodology [...]

Impact of Quantum Mechanical Tunnelling on Off-leakage Current in Double-gate MOSFET using a Quantum Drift-diffusion Model

Jaud M-A, Barraud S., Le Carval G., CEA-LETI, FR

With the growing use of wireless electronics systems, off-state leakage current in MOSFETs appears as one of the major physical limitations. Measurements of quantum tunnel current between source-drain (S?D) have recently shown that it will [...]

Numerical Modeling of Diffusion in Extracellular Space of Biological Cell Clusters and Tumors

Berthier J., Rivera F., Caillat P., CEA-LETI, FR

Biological cluster of cells may be seen as porous media, where the cells are the “solid grains” and the extracellular space (ECS) the “pores”. It is often the case in dense clusters of cells that [...]

Multi-Tunnel-Junction Memory : Analyses of Feasibility for Non-Volatile Memory Applications

Le Carval G., Le Royer C., Le Carval G., Le Royer C., Sanquer M., CEA-LETI, FR

MOSFET Memories based on quantum dots have been investigated extensively because of their promising applications to non-volatile and low voltage memories. Among these memories, the Multi-Tunnel-Junction Memory (MTJM) appears to be a promising concept for [...]

Modeling of the Kinetics of Capture of Pathogens Enhanced by a Marangoni Flow

Pham P., Achard J.L., Berthier J., Ginot F., CEA-LETI, FR

Binding of targetted biomolecules, pathogens or analytes on a reactive surface is commonly used for biodiagnostic systems. However the process is slow and inefficient if one relies only on molecular diffusion to transfer the analytes [...]