Fabrication and capillary filling of sub-10nm nanochannels

Keywords: Nanochannels, capillarity, viscosit

Micro coriolis flow sensor

Keywords: Coriolis flow sensor, surface channel technolog

Highly sensitive micro coriolis mass flow sensor

We have realized a micromachined micro Coriolis mass flow sensor consisting of a silicon nitride resonant tube of 40 ?m diameter and 1.2 μm wall thickness. Actuation of the sensor in resonance mode is achieved by Lorentz forces. First measurements with both gas and liquid flow have demonstrated a resolution in the order of 10 milligram per hour. The sensor can simultaneously be used as a density sensor

ALM model for pension funds : numerical results for a prototype model

A multistage mixed-integer stochastic programming model is formulated for an Asset Liability Management problem for pension funds. Since these models are too difficult to solve for realistically sized problems, a heuristic is described. Numerical results for several instances of a prototype model are presented and discussed.

Listening to MEMS: An acoustic vibrometer

new way to characterize vibrating MEMS devices is presented. Using an acoustic particle velocity sensor the coupled sound field is measured, which is a measure for the movement of the MEMS device. We present several possible applications of this measurement method. It can be used as a read-out system for a mass flow sensor, and for characterization of in- and out-of-plane movements of MEMS devices. The method is an interesting alternative to laser scanning vibrometry due to its small size and low complexity; furthermore, it allows the user to `listen' directly to MEMS devices

An ALM model for pension funds using integrated chance constraints

We discuss integrated chance constraints in their role of short-term risk constraints in a strategic ALM model for Dutch pension funds. The problem is set up as a multistage recourse model, with special attention for modeling short-term risk prompted by the development of new guidelines by the regulating authority for Dutch pension funds. The paper concludes with a numerical illustration of the importance of such short-term risk constraints

Optimization of the Lorentz Force Actuation for a micro Coriolis mass flow sensor

In this paper we present Finite Element models to optimize the Lorentz force actuation of a micro Coriolis mass flow sensor. The models specify several different configurations for the permanent magnets used to create the magnetic field for the actuation. The models are used to compare the different configurations with relation to the strength of the Lorentz force used for actuation. Using these models the magnetic field outside the sensor area has been reduced by 6 orders of magnitude. The models have been validated with measurements