DE – Page 38 – TechConnect Briefs

Dynamics in a Thermal Ink Jet: A Model for Identification and Simulation

Rembe C., aus der Wiesche S., Hofer E.P., University of Ulm, DE

In this paper a newly developed model for identification and simulation of dynamic phenomena in a thermal ink jet is presented. As a result of the modeling the calculation of the pressure propagation in the [...]

Simulation of (Self-) Priming in Capillary Systems Using Lumped Models

Sesterhenn M., Mellmann J., Löhr M., Stierle B., Strobelt T., Sandmaier H., University of Stuttgart, DE

In this paper, a toolbox of lumped models for simulating (self-)priming and emptying of complex capillary networks is presented. Each model is a kind of an all-in-one-model, that considers inertia, friction, gravitation and capillarity and [...]

Dynamics in Microfluidic Systems with Microheaters

aus der Wiesche S., Rembe C., Maier C., Hofer E.P., University of Ulm, DE

The physics of nucleation, boiling, bubble growth and collapse in thermal microactuators will be presented. The boiling process exhibits an equivalence to a phase transition of second order and this leads, in contrast to classical [...]

Thermo-Mechanical Simulation of Wire Bonding Joints in Power Modules

Ramminger S., Mitic G., Türkes P., Wachutka G., Siemens AG, DE

High voltage and high current power modules are key components for traction applications. In the future, railway locomotives, tramways and elevators will be equipped with Insulated Gate Bipolar Transistor (IGBT) modules. In this field of [...]

Simulation of the Frequency Limits of SiGe HBTs

Geßner J., Schwierz F., Mau H., Nuernbergk D., Roßberg M., Schipanski D., Technische Universitat Ilmenau, DE

The dynamic performance of SiGe HBTs in terms of the cut off frequency and the maximum frequency of oscillation is investigated by numerical device simulation. Simulations based on both the Drift Diffusion Model and the [...]

Web-Based Design Tools for MEMS-Process Configuration

Hahn K., Brück R., University of Siegen, DE

The micro electromechanical systems (MEMS) industry is characterized by small and medium sized enterprises (SMEs) specialized on products to solve problems in specific domains like medicine, automotive sensor technology, etc. In this field of business [...]

Analysis of Unstable Behavior Occurring in Electro-Mechanical Microdevices

König E-R, Wachutka G., Münich University of Technology, DE

We analyze the instability which is inherent to electrostatically driven microdevices. Further, we propose a homotopy method to overcome this difficulty during simulation of these devices. Starting from a simplified model, the governing differential equations [...]

Transient Electromagnetic Behaviour of Multiply Contacted Interconnects

Böhm P., Wachutka G., Münich University of Technology, DE

This paper presents a methodology for the analysis of the transient electromagnetic behavior of multiply contacted interconnects. It is shown that for applications with high switching frequencies and high pulse repetition rates with subsequent steep [...]

Model Based Identification as a New Tool to Extract Physical Parameters of Microactuators from Measurements with Error Bounds

Rembe C., Hofer E.P., Tibken B., University of Ulm, DE

Model based evaluation of high speed cinematographic image sequences is demonstrated for a microrelay which was manufactured using the LIGA technology. The measurements of the microrelay have been performed with an experimental setup based on [...]

Optimized Behavioral Model of a Pressure Sensor Including the Touch-Down Effect

Peters D., Bechtold St., Laur R., University of Bremen, DE

The complexity of microsystems is steadily increasing due to the scaling of microelectronic as well as for example mechanical, optical or fluidic devices. In order to be able to get good designs fast, one has [...]