Przekwas A.J. – TechConnect Briefs

Multiscale Design of a Laser Actuated Micro Bubble Array Acoustic-Fluidic Microdevice for Bioanalytical and Drug Delivery Applications

Chen Z.J., Przekwas A.J., CFD Research Corporation, US

Next generation fluidic micro-nano devices will require precise control of force fields within a device and their interaction with a biological sample. Current force field designs use mechanical structures such as cantilevers, optical fields e.g. [...]

Efficient Full-Wave Modeling of Electromagnetic Field Propagation Through Micro-Optical Link

Sikorski Z., Turowski M., Przekwas A.J., CFD Research Corporation, US

Low dimensions of contemporary micro-optics imply the necessity of inclusion of vector diffraction effects into optical models. Classical geometrical optics and Gaussian beam calculation approaches are too coarse approximations. They do not properly take into [...]

Modeling of Electromagnetic Fields in High Speed Electronic Interconnects Using a Least Squares FD-TD Algorithm

Tramel R.W., Turowski M., Przekwas A.J., Schultz J., Frey R.G., CFD Research Corporation, US

A new Finite-Surface Time-Domain (FS-TD) numerical method is presented which is a generalization of the classical Finite-Difference Time-Domain (FD-TD) method of Yee. The method is divergence/charge preserving on arbitrary grids. It reverts to the standard [...]

Coupled System-Level and Physical-Level Simulation

Furmanczyk M., Turowski M., Yu E., Przekwas A.J., CFD Research Corporation, US

Software tools for Mixed-Level Coupled Simulations have been developed. The system-level simulation uses the circuit theory approach, where each element of the system is modeled either through mathematical equation, or through coupling with physical-level 3D [...]

Coupled Multiphysics and Chemistry Simulations of PCR Microreactors with Active Control

Athavale M.M., Chen Z.J., Furmanczyk M., Przekwas A.J., CFD Research Corporation, US

High-fidelity simulation tools that couple fluid flow, heat transfer and chemistry of PCR microreactors have been applied to different microreactor designs. The tools are coupled to a controller software for thermal control of the virtual [...]

Electrodynamic Transport, Electroporation and Lysis of Cells in Pharmacological and Bioanalytical Microsystems

Przekwas A.J., Chen Z.J., Athavale M., CFD Research Corporation, US

Biological information is stored in cells and is the prime object of interest of pharmacological, biomedical, and bioanalytical professionals. Whatever the interest: elcectroporative drug delivery and pharmacodynamics, in vivo PCR, infection pathology, DN

Mixed-Dimensionality, Multi-Physics Simulation Tools for Design Analysis of Microfluidic Devices and Integrated Systems

Przekwas A.J., Makhijani V.B., CFD Research Corporation, US

Computational design of microfluidic devices and integrated microsystems involves several strongly coupled physical disciplines, including fluid mechanics, heat transfer, stress/deformation dynam-ics, electrokinetics, biochemistry and others. CFDRC is dev

A Computational Framework for Modeling One-Dimensional, Sub-Grid Components and Phenomena in Multi-Dimensional Micro-Systems

Pindera M.Z., Bayyuk S., Upadhya V., Przekwas A.J., CFD Research Corporation, US

This paper presents a framework for modeling essentially one-dimensional devices and components embedded in multi-dimensional spaces. The main characteristic and main advantage of the new methodology is that the one-dimensional and multi-dimensional objects or domains [...]

CFD-Micromesh: A Fast Geometrical Modeling and Mesh Generation Tool for 3D Microsystem Simulations

Tan Z., Furmanczyk M., Turowski M., Przekwas A.J., CFD Research Corporation, US

In this work, a new fully automated geometrical modeling and meshing tool is described. It imports standard layout formats (CIF, GDSII, DXF), images (GIF, JPG), and 3D boundary representations (STL). A 3D model is then [...]

High-Fidelity and Reduced Models of Synthetic Microjets

Przekwas A.J., Turowski M., Chen Z., CFD Research Corporation, US

Microfabricated arrays of synthetic jets are being explored for applications in aerodynamic flow control, in cooling of electronic packages, and in mixing in microchemical reactors. Computational simulation of coupled unsteady fluid mechanics and electromechanical actuation [...]