DK – Page 5 – TechConnect Briefs

Plasmon-enhanced Fluorescence Detection of Blood Metabolites in Biosensors

Klitgaard S., Rasmussen T., Neves-Petersen M.T., Neves-Petersen M.T., Petersen S.B., Aalborg University, DK

Quick and precise detection of blood metabolites is a key parameter in monitoring and treating critically sick patients. Each analysis requires a certain amount of blood, and especially for babies in neonatal care repeated sampling [...]

New Light Induced Molecular Switch allows Sterically Oriented Micrometer Sized Immobilization of Biomolecules

Snabe T., Neves-Petersen M.T., Fojan P., Klitgaard S., Neves-Petersen M.T., Petersen S.B., Aalborg University, DK

Fundamental knowledge on protein structures and the effect of ultraviolet light on these structures has paved the way for the development of a unique light-based immobilization technology that allows oriented protein immobilization onto micrometer sized [...]

Clogging Pressures of Bubbles in Microchannel Contractions: Theory and Experiments

Jensen M.J., Wang X., Attinger D., Bruus H., Mikroelektronik Centret, DTU, DK

We present a theoretical, numerical, and experimental study of bubbles passing through a microchannel contraction. A certain pressure, the so-called clogging pressure, is needed to push a bubble through a microchannel contraction. We present the [...]

TranSIESTA: A SPICE for Molecular Electronics

Stokbro K., Taylor J., Brandbyge M., Ordejon P., Technical University of Denmark, DK

With our newly developed method,TranSIESTA[1], it has become possible to model complex molecular electronics devices under operation conditions. In this presentation I will describe the basic principles behind the method and applications of the method [...]

Quasi-static Motion of Bubbles in Microchannel Contractions

Jensen M.J., Goranovic G., Bruus H., Technical University of Denmark, DK

We present a thorough theoretical and computational study of bubble dynamics in icrofluidic channels with contractions. We investigate the effects of geometry and surface physics (friction and contact angle) on the behavior of incompressible bubbles, [...]

Electroosmotic Pumping of Nonconducting Liquids by Viscous Drag from a Secondary Conducting Liquid

Brask A., Goranovic G., Bruus H., Technical University of Denmark, DK

A novel electroosmotic pump design relying on two-liquid viscous drag to pump nonconducting liquids is presented and analyzed theoretically. A conducting pumping liquid driven by electroosmotic flow (EOF) drags a nonconducting working liquid by viscous [...]

Modelling Coupled Motion of Electrons in Quantum Dots with Wetting Layers

Melnik R.V.N., Willatzen M., University of Southern Denmark, DK

The influence of wettin-layer states on quantum-dot states and vice-versa is examined numerically employing a one-band model for electroncs in the conduction band. This problem corresponds to the case where a few monolayer InAs grown [...]

Modelling Coupled Motion of Electrons in Quantum Dots with Wetting Layers

Melnik R.V.N., Willatzen M., University of Southern Denmark, DK

The influence of wettin-layer states on quantum-dot states and vice-versa is examined numerically employing a one-band model for electroncs in the conduction band. This problem corresponds to the case where a few monolayer InAs grown [...]

Three-Dimensional Single Step Flow Sheathing in Micro Cell Sorters

Goranovic G., Perch-Nielsen I., Larsen U.D., Wolff A., Kutter J., Telleman P., Bio/Chemical MicroSystems, DK

We present a novel microstructure that enables 3 dimensional hydrodynamic focusing of cells in a pressure driven micro cell sorter. This so-called "chimney" structure for single step coaxial sheathing was designed and optimized through simulation, [...]

On Design of a Backplate Used in a Hearing Aid

Pedersen N.L., Technical University of Denmark, DK

In this work topology optimization is used to optimize the compliance or the eigenfrequencies of prestressed plates. The prestress is accounted for by including the force equivalent to the prestressing and adding the initial stress [...]