Problem Statement and Motivation Key Achievements and Future Goals Technical Approach Investigators: Mitra Dutta (ECE) and Michael Stroscio, ECE & BioE Primary Grant Support: ARO, AFOSR Organic-inorganic hybrid structures enable integration of useful organic and inorganic characteristics for novel applications such as solar cell, chemical sensors, and fluorescent biotags. Energy transfer in the composite of inorganic quantum dots (QDs) and photosystem I (PS-I) is not understood although it is very important and well studied for photosynthesis. Observed energy transfer from CdSe QDs to PS-I by optical and electrical measurements. Photoluminescence data and absorption data show that the energy of excited carriers of CdSe QDs to PS-I by means of radiative emission, FRET, and electron/hole transfer between the inorganic-organic system. I-V measurement data are sensitive to incident light in the composite CdSe QDs/PS-I material. Further studies continue to identify each energy transfer method. Synthesis of the composite of inorganic CdSe QDs and organic PS-I Experimental measurement of the energy transfer between QDs and PS-I Investigation of structural, optical and transport properties by means of photoluminescence, time-resolved photoluminescence, absorption, capacitance-voltage and current-voltage measurements Glass QDs+PS1QDs

Problem Statement and Motivation Key Achievements and Future Goals Technical Approach Investigator: Sudip K. Mazumder, Electrical and Computer Engineering Prime Grant Support: NSF, DOE (SECA and I&I), PNNL, CEC, NASA, Ceramatec, Airforce (award pending), TI, Altera To achieve reliable interactive power-electronics networks To design and develop power-management electronics for residential and vehicular applications of renewable/alternate energy sources (e.g., fuel and photovoltaic cells) To achieve higher power density and realize systems on chip First, wireless distributed control dc/dc and multiphase converters and three-phase induction motor control First, zero-ripple, multilevel, energy-efficient fuel cell inverter First, photonically-triggered power transistor design for power electronics First, nonlinear VRM controller for next-generation Pentium processors Comprehensive solid-oxide-fuel-cell (SOFC) spatio-temporal system model Stability and Stabilization of Power-Electronics Networks: a) Global stability analysis of stochastic and functional hybrid system b) Stabilization using wireless networked control Optimal Fuel Cell based Stationary and Vehicular Energy Systems a) Resolving interactions among energy source (such as fuel cells), power electronics, and balance of plant. b) Fuel-cell power-electronics inverter design that simultaneously meet criteria of cost, durability, and energy efficiency Robust and efficient power devices and smart power ASIC a) High-speed, EMI immune, wide-bandgap power devices b) Integration of low- and high-voltage electronics on the same chip

Problem Statement and Motivation Key Achievements and Future Goals Technical Approach Investigators: P.L.E. Uslenghi (P.I.), S. Dutt, D. Erricolo, H-.Y. D. Yang, ECE in collaboration with Clemson University, Houston University, Ohio State University, University of Illinois at Urbana-Champaign, University of Michigan Prime Grant Support: AFOSR Understand and predict the effects of the new electromagnetic threat represented by high power microwave (HPM) and ultrawide band (UWB) pulses on digital electronic systems found inside fixed or moving platforms. Develop recommendations for performing field tests/measurements Fast computer codes are under development at UH, UIUC, UM and OSU. Topology studies are underway at CU. Analysis of devices and of processor faults are being conducted at CU and UIC. Validation tests for codes are being developed at CU, OSU, and UIC. Apply electromagnetic topology to predict the effects of HPM/UWB aggressor signals Apply recently developed fast and accurate computer simulation tools. Further extend the capabilities of the computer simulation tools to obtain a better understanding of the overall problem. High Power EM fields External EM Source (Impulse Radiating Antenna) Illuminated target