1. Research Overview Bahaa Saleh Carey Rappaport David Castañón Badri Roysam Miguel Velez-Reyes David Kaeli Research Overview Bahaa Saleh Carey Rappaport David Castañón Badri Roysam Miguel Velez-Reyes David Kaeli The Bernard M. Gordon Center for Subsurface Sensing and Imaging Systems This work was supported by in part by the Gordon Center for Subsurface Sensing and Imaging Systems, under the Engineering Research Centers Program of the National Science Foundation (Award # EEC-9986821).

2. 4/19/07 2 R1-B Effective Modeling (& SoilBED / SafeBED / SeaBED) Carey Rappaport Northeastern University Carey Rappaport Northeastern University  Electromagnetic models  Microscopy applications  SeaBED acoustic applications  SoilBED application  SafeBED appliations Computational Modeling and Applications Theme: Efficient and Realistic Computer Modeling of Wave Interaction with Targets in Layered and Inhomogeneous Media for Subsurface Imaging

3. 4/19/07 3 Electromagnetic Wave Models  R1B p1 “SAMM Algorithm for Efficient Computation of Nearfield Scattering in Lossy Ground from Borehole Sources,” Ann Morgenthaler R1B p2 “Validating Four-Zeros 2D FDTD Model,” Maryam Jalalinia

4. 4/19/07 4 Electromagnetic Wave Models (Cont’d) R1B p3 Matlab-based FDFD Method for Microwave Breast Imaging,” Qiu Dong transmitters 1 2 3 4 5 67 R1B p5 “A Novel Modeling and Inversion Method to Image Weakly Scattering Sub- Cellular Structure,” Ersel Karbeyaz

5. 4/19/07 5 Microscopy Applications R1B p4 “A New Approximate Model for Microscopy Imaging,” Heidy Sierra Computational models used to characterize surfaces of bone non-invasively, using the interaction of light with two focused sound sources, with application to characterization of arthritic joints. R1B p6 “Diffuse Optical Tomography with Acoustic Photonic Imaging,” Blair Simon R1B p7 “Improving Data Acquisition of the Dual-Wedge Confocal Microscope," Steve Guerrera Undergraduate research developing a high-speed data acquisition system for dual-wedge confocal microscope. R1B p8 “Photo-Thermal Coherent Confocal Microscope," Sean Sullivan

6. 4/19/07 6 SeaBED Acoustic Applications Sea p3 “Calibrated Bistatic Rayleigh- Born Bottom Reverberation Model for Fluctuating Range-Dependent Continental Shelf Environments,” Ameya Galinde Sea p4 “Statistics of Broadband Transmissions Through a Range- Dependent Fluctuating Ocean Waveguide,” Mark Andrews May 14 2003: 09:32:25 EDT May 15, 2003: 08:49:55 EDT 70m 80 m 100m 120m 70m 80m 100m 120m 200m 400m OAWRS: instantaneous wide-area ocean waveguide remote sensing technique using sound waves Correct for source level and transmission losses Calibrate the one way transmission data Model the background reverberation due to scattering from volume inhomogeneities in the sea bottom

7. 4/19/07 7 SoilBED GPR Applications Soil p1 “Forward TD Ground Penetrating Radar Modeling of Bridge Decks for Detecting Deterioration,” Kim Belli Develop FDTD forward model and inversion scheme, calibrated with GSSI donated 2 GHz GPR to find subsurface pavement anomalies Soil p2 “Characterization of GPR Antenna Radiation Pattern for Implementation into FDTD Simulation" Kim Belli Soil p4 “Progress of Rapid Soil Characterization System,” Eilish Corey Soil p2 “Tunnel Detection Using Cross-Well Radar,” Arvin Farid, Jose Martinez Soil p5 “Bimodal Detection of Underground Contamination in Two Dimensional Systems,” Maria Serano 13 4 20 cm 2 Metal Rod 10 cm

8. 4/19/07 8 SafeBED Security Applications SafeBED p2 “Computational Modeling and Analysis of Radar Scattering by Metallic Body-Worn Explosive Devices Covered with Wrinkled Clothing,” Amanda Angell SafeBED p3 “Body-Worn Improvised Explosive Device Detection Using Millimeter-Wave Radar,” Richie Sullivan SafeBED p1 “Terahertz Applications for Detection of Explosives,” Jian Chen Frequency (THz) 1.62.02.40.51.20.8 RDX 0.82THz 1.5THz 1.96THz 240 180 120 60  (cm -1 ) Frequency (THz) 1.6THz 1.62.02.40.51.20.8 2.2THz TNT 80 60 40 20  (cm -1 )