Carnegie Mellon University – TechConnect Briefs

Fabrication of Conductive Nanoporous Membranes using Self-Assembling Block for Electrically Controlled Diffusive Flow

Ozalp E.I., Kim S., Sundar V., Zhu J.-G., Weldon J.A., Carnegie Mellon University, US

Nanoporous membranes have been recognized as promising candidates for drug delivery applications due to their small pore size and high surface-to-volume ratio1. The ultimate goal of smart drug delivery systems is to release a specific [...]

Allosteric pathway formation in globin proteins explored with network analysis models

Pfeffer J., Woods K.N., Carnegie Mellon University, US

In the context of drug design and protein engineering, understanding the nature of allosteric networks is of particular interest. A pre-condition for successfully developing a rational design of proteins that incorporates allostery is the capability [...]

Fabrication and Recording of Bit Patterned Media Prepared by Rotary Stage Electron Beam Lithography

Moneck M.T., Lin W., Powell S., Okada T., Fujimori J., Kasuya T., Katsumura M., Iida T., Kuriyama K., Bain J., Zhu J.-G., Carnegie Mellon University, US

Bit patterned media (BPM) is a promising technology for magnetic recording at ultra-high areal densities beyond 1 Tbit/in2. To be viable, bit patterns must be reliably fabricated across 2.5” disks with few defects and sigma [...]

Development of Methanol Based Reactive Ion Etching Processes for Nanoscale Magnetic Devices

Moneck M.T., Zhu J.-G., Carnegie Mellon University, US

Recent advances in the area of magnetoelectronics include the development of bit patterned media (BPM) for hard disk drives and the realization of spin transfer torque (STT) devices. As feature sizes shrink to sub-50 nm [...]

Mechanical Properties Measurements of 0.35-µm BiCMOS MEMS Structures

Liu J., Fedder G.K., Sassolini S., Sarkar N., Carnegie Mellon University, US

A new Young’s modulus test structure has been designed and used in our lab. Simple models have been built in simulating lateral and vertical stress gradients. Test structures, measurements and FEA simulations are reported on [...]

Microfluidic Injector Models Based on Neural Networks

Magargle R., Hoburg J.F., Mukherjee T., Carnegie Mellon University, US

An injector modeling methodology based on neural networks is presented. The new aspects of this approach are (1) the full description of the dynamic injector behavior and (2) the applicability of the approach to a [...]

System Simulations of Complex Electrokinetic Passive Micromixers

Wang Y., Lin Q., Mukherjee T., Carnegie Mellon University, US

This paper presents a composable system simulation framework using an analog hardware description language implementing behavioral models for electrokinetic micromixers that are capable of accurately capturing the effects of mixer topology/geometry, flow ratio and material [...]

Pareto-Optimal Modeling for Efficient PLL Optimization

Tiwary S.K., Velu S., Rutenbar R.A., Mukherjee T., Carnegie Mellon University, US

Simulation-based synthesis tools for analog circuits [1,2] face a problem extending their sizing/biasing methodology to larger block-level designs such as phase lock loops or converters: the time to fully evaluate (i.e., to fully simulate) each [...]

An Injector Component Model for Complete Microfluidic Electrokinetic Separation Systems

Magargle R., Hoburg J.F., Mukherjee T., Carnegie Mellon University, US

This work presents a closed-form, numerically derived model of a key microfluidic electrokinetic separation system component, the cross injector. The model fits into a framework such that it can be combined with a network of [...]

Composable System Simulation of Dispersion in Complex Electrophoretic Separation Microchips

Wang Y., Lin Q., Mukherjee T., Carnegie Mellon University, US

This paper presents a composable system simulation framework for electrophoretic separation microchips, using an analog hardware description language integrating analytical dispersion models that describe not only the behavior of individual components, but also the interactions [...]