Drexel University – TechConnect Briefs

Magnetically Targeted Endothelial Cells for Prevention of Vascular Restenosis

Polyak B., Drexel University, US

The advent of percutaneous transluminal angioplasty with stent implantation and the even more recent use of drug-eluting stents have resulted in a paradigm shift in the care of obstructive vascular disease. However, deleterious sequelae of [...]

Monte Carlo Simulation of Transport in Two-Dimensional Electron Gas via Energy Relaxation

Zhao X., Nabet B., Drexel University, US

We simulate the process of energy relaxation in two-dimensional-electron-gas (2DEG) via electron-electron (e-e) scattering by Monte Carlo method. Results indicate a sub-picosecond energy relaxation response time to external perturbation. We suggest that carriers are subjected [...]

System-Level Optical Interface Modeling for Microsystems

Kurzweg T.P., Sharma A.S, Bhat S.K., Levitan S.P., Chiarulli D.M., Drexel University, US

In this paper, we present an accurate and computationally efficient system-level optical propagation technique suitable for the modeling of optical interfaces. Our technique is based on extensions to the angular spectrum technique used to solve [...]

Ferrofluid Masking for Lithographic Applications

Yellen B., Friedman G., Drexel University, US

A novel self-aligned “soft masking” method that is compatible with traditional photolithographic processes is demonstrated. This method uses a suspension of ultra-fine iron oxide grains (ferrofluid) to protect or de-protect selected areas of a magnetically [...]

Magnetic Driven Assembly of Colloidal Particles onto Patterned Surfaces

Yellen B., Friedman G., Drexel University, US

A two-dimensional array of colloidal particles can be utilized in constructing devices and materials for photonic, electronic, magnetic and sensor applications. Several methods for patterning colloidal particles arrays have emerged in the recent past, including [...]

Variation of Contact Barrier Height in Metal-Semiconducting Carbon Nanotube Junctions using a Localized Gate

Gallo E., Nabet B., Freitag M., Johnson A.T., Drexel University, US

We have previously succeeded in modulating current in a carbon nanotube FET device due to the presence of a potential on an AFM tip. Symmetric I-V is observed with no tip, however, the tip has [...]

A Novel Polymer Nanofiber Interface for Chemical and Biochemical Sensor Applications

Kwoun S.J., Lee R.M., Han B., Ko F.K., Drexel University, US

Polymer thin films are used extensively as a chemically sensing medium in variety types of acoustic sensors. It is well known that the sensitivity of a sensing film is proportional to the surface area of [...]