Douglas R. Strachan

Douglas R. Strachan

Post-doc fellow, Physics and Materials Science & Engineering, University of Pennsylvania

PhD, Physics, University of Maryland (2002)

BA, Physics, Northwestern University (1995)

Contact Information
University of Pennsylvania
David Rittenhouse Lab, room 2N13B
Department of Physics and Astronomy
209 S. 33rd St.
Philadelphia, PA 19104-6396
office: 215-898-2541
email: add "@sas.upenn.edu" after my user name "drstrach"

I am a post-doc fellow at the University of Pennsylvania with Professors A. T. "Charlie" Johnson in the Physics Department and with Dawn A. Bonnell in the Materials Science and Engineering Department. My work focuses on single molecule devices (such as transistors and switches) made with nanometer-spaced electrodes, probing the electronic structure of nanoscale systems (such as single molecules and nanotubes) with scanning probe microscopy, studying nanotube devices, and studying the electrochemistry of nanometer-scale devices.

I also work in the fields of superconductivity and soft matter. My PhD thesis work focused on vortex dynamics and phase transitions of high-temperature superconductors with my advisor, Professor Christopher J. Lobb at the University of Maryland's Center for Superconductivity Research. I have also worked extensively with Professor Steven M. Anlage on microwave measurements of superconductors. My soft-matter work has involved the study of aging colloidal sytstems using rheological and light scattering probes in collaboration with Professor Srinivasa R. Raghavan at the Department of Chemical and Biomolecular Engineering at the University of Maryland.

Research

Publications

Experiments and Apparatus

Tutorials

Collaborators

Diversions

Publications

S. S. Datta, D. R. Strachan, E. J. Mele, and A. T. Johnson, Surface Potentials and Layer Charge Distributions in Few-Layer Graphene Films. Nano Lett. ASAP (2008).
S. S. Datta, D. R. Strachan, S. M. Khamis, and A. T. Johnson, Crystallographic Etching of Few-Layer Graphene. Nano Lett. ASAP (2008).
D. R. Strachan, D. E. Johnston, B. S. Guiton, S. S. Datta, P. K. Davies, D. A. Bonnell, and A. T. Johnson, Real-Time TEM Imaging of the Formation of Crystalline Nano-scale Gaps. Phys. Rev. Lett. 100, 056805 (2008).
M.C. Sullivan, D. R. Strachan, Su Li, Hua Xu, K. Segawa, Yoichi Ando, Steven M. Anlage, and C.J. Lobb, Why can’t experimentalists agree on the superconducting critical exponents? Physica C 468, 284 (2008).
D. E. Johnston, D. R. Strachan, and A. T. Johnson, Parallel Fabrication of Nanogap Electrodes. Nano Lett. 7, 2774 (2007).
D. R. Strachan, D. E. Smith, M. D. Fischbein, D. E. Johnston, B. S. Guiton, M. Drndic, D. A. Bonnell, and A. T. Johnson, Clean Electromigrated Nanogaps Imaged by Transmission Electron Microscopy. Nano Lett. 6, 441 (2006).
D. B. Li, D. R. Strachan, J. H. Ferris, and D. A. Bonnell, Polarization reorientation in ferroelectric PZT thin films with electron beams. J. Mater. Res. 21, 935 (2006).
D. R. Strachan, G. C. Kalur, and S. R. Raghavan, Size-dependent diffusion in an Aging Colloidal Glass Phys. Rev. E. 73, 041509 (2006).
D. R. Strachan, M. C. Sullivan, and C. J. Lobb, Scaling of cross-over currents in current-voltage characteristics of YBa2Cu3O7-d films. Phys. Rev. B. 73, 012512 (2006).
D. R. Strachan, D. E. Smith, D. E. Johnston, T.-H. Park, Michael J. Therien, D. A. Bonnell, and A. T. Johnson, Controlled Fabrication of Nano-gaps in Ambient Environment for Molecular Electronics. Appl. Phys. Lett. 86, 043109 (2005).
M. C. Sullivan, D. R. Strachan, T. Frederiksen, R. A. Ott, and C. J. Lobb, Effects of Self-field and Low Magnetic Fields on the Normal-Superconducting Phase Transition. Phys. Rev. B. 72, 092507 (2005)
M. C. Sullivan, T. Frederiksen, J. M. Repaci, D. R. Strachan, R. A. Ott, and C. J. Lobb, Normal-superconducting phase transition mimicked by current noise. Phys. Rev. B (Rapid Comm.) 70, 140503(R) (2004).
D. R. Strachan, M. C. Sullivan, T. Frederiksen, R. A. Ott, and C. J. Lobb, What a superconducting transition should look like: Extrapolating data from scaling plots. Physica C 408–410, 562 (2004).
M. C. Sullivan, D. R. Strachan, T. Frederiksen, R. A. Ott, M. Lilly, C. J. Lobb, Zero-field superconducting phase transition obscured by finite-size effects in thick YBa2Cu3O7-d films. Phys. Rev. B 69, 214524 (2004).
D. R. Strachan, C. J. Lobb and R. S. Newrock, Dynamic Scaling and Two-Dimensional High-Tc Superconductors. Phys. Rev. B. 67, 174517 (2003).
D. R. Strachan, M. C. Sullivan, and C. J. Lobb, Probing the limits of superconductivity. Proc. SPIE, Superconductivity and Related Oxides: Physics and Nanoengineering V, Ivan Bozovic and Davor Pavuna, Eds., 4811, 65-77 (2002).
D. R. Strachan, M. C. Sullivan, P. Fournier, S. P. Pai, T. Venkatesan, and C. J. Lobb, Do superconductors have zero resistance in a magnetic field? Phys. Rev. Lett. 87, 067007 (2001).