Eric A. Hoffmann
Email: ehoffma1@uoregon.edu
Phone: (541) 346-4771
Fax: (541) 346-3422
Physics Department and Materials Science Institute
1274 University of Oregon
Eugene, Oregon 97403-1274, USA
Born April 28, 1982
Citizenship: United States of America
Education
- University of Oregon, 9/2004 - present
Ph.D. in Physics (expected summer 2009) Advisor: Heiner Linke
Area of specialization: Thermoelectric phenomena of InAs/InP heterostructure nanowires
GPA: 3.95 (out of 4.0)
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University of Puget Sound, 8/2000 - 5/2004
B.S. in Physics with honors and B.S. in Mathematics with honors
GPA: 3.75 (out of 4.0)
Research Experience
- Graduate Research Assistant, University of Oregon, 6/2005 – present
- Research emphasis: Characterization of the thermoelectric properties of InAs/InP nanowires
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Research topics
- Low-temperature electron and thermal transport in mesoscopic devices
- Nanoscale heating and cooling, thermometry, and detection of thermal phenomena
- Installation, maintenance, and operation of 3He and 4He cryostats
- Visiting Researcher at the Nanometer Structure Consortium, Lund University,
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Lars Samuelson group, 12/2005 - 03/2006 and 09/2007 - 12/2007
Research emphasis: Design and fabrication of mesoscopic devices for thermal experiments
- Research topics
- Nanofabrication of homogenous InAs and heterostructure InAs/InP nanowire devices
- Characterization of mesoscopic thermal effects in heterostructure nanowire devices
- Summer Research Internship (NNUN), University of California, Santa Barbara,
- S. James Allen group, 6/2003 - 8/2003
Research emphasis: Biological life detection using terahertz circular dichroism spectroscopy
- Summer Research Internship (REU), University of Colorado, Boulder,
- Noel Clark group, 6/2002 - 8/2002
Research emphasis: Self-assembling monolayers for liquid crystal alignment
Awards and Honors
- National Science Foundation Integrative Graduate Education and Research Traineeship, University of Oregon
- Three consecutive years of application and acceptance, 9/2005 - 9/2008
- Awards for Academic Achievement, University of Puget Sound
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- Slater Award, science research award from the Office of the Academic Dean, 2004
- Peter K. Wallerich Scholarship, physics academic award, 2003
- Edward Goman Mathematics Scholarship, mathematics academic award, 2003
- NASA Space Grant Scholarship, natural sciences academic award, 2002
Teaching Experience
- Semiconductor Device Course Teaching Assistant, University of Oregon, 7/2007 and 7/2008
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Taught laboratory sections for masters graduate students as part of a summer school program
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Astronomy Teaching Assistant, University of Oregon, 9/2004 - 6/2005
- Assisted with an undergraduate introductory astronomy course
- Physics Tutor and Mathematics Tutor, University of Puget Sound, 9/2002 - 5/2004
- Tutored undergraduates in physics and mathematics in two separate positions
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Science Consultant for the Museum of Glass, Tacoma, Washington, 1/2002 - 3/2003,
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Developed a high-school level physics curriculum related to contemporary art and pe
rformed scientific demonstrations at the museum to reinforce the curriculum
Professional Experience
- University of Oregon Physics Graduate Student Seminar Organizer, 9/2006 - 6/2007 and 9/2008 - present
- Recruited and scheduled seminar speakers throughout the year including professors and graduate students from physics, chemistry, and neuroscience
- University of Oregon Materials Science Institute Retreat Organizer, 9/2007 - 12/2007
- Invited external academic and industrial speakers to a student-organized multidisciplinary conference focusing on collaborative materials science research
- University of Oregon Accreditation Renewal Board Participant, 4/2007
- Discussed the university’s accreditation renewal with an external accreditation team
- Public Forum on Nanotechnology Facilitator, 3/2007
- Lead discussions with member of the public regarding nanotechnology at a forum co-hosted by the Oregon Museum of Science and Industry and the University of Oregon
Publications and Professional Communications
- Journal Publications:
- Measuring temperature gradients over nanometer length scales
E.A. Hoffmann, H.A. Nilsson, J.E. Matthews, N.
Nakpathomkun, A.I. Persson, L. Samuelson, and H. Linke, Nano Letters 9, 779 (2009).
- Quantum-dot thermometry
E.A. Hoffmann, N. Nakpathomkun, A.I. Persson, H.A. Nilsson, L. Samuelson, H. Linke
Appl. Phys. Lett. 91, 252114 (2007).
- Conference Proceedings:
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Nanoscale thermometry with a quantum dot
E.A. Hoffmann and H. Linke
Journal of Low-Temperature Physics, 154, 161 (2009)
Conference on Micro- and Nanocryogenics (MNC), a satellite of the 25th International Conference on Low Temperature Physics (LT25), Helsinki, Finland.
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Determining a temperature differential across a quantum dot
E.A. Hoffmann, N. Nakpathomkun, A.I. Persson, H.A. Nilsson, L. Samuelson, H. Linke
Physica E: Low-Dimensional Systems & Nanostructures 40, 1605-1607 (2008)
Proceeding of the 17th International Conference on Electronic Properties of Two-Dimensional Systems (EP2DS), Genoa, Italy.
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Power generation with nanowire resonant tunneling thermoelectrics
M. F. O'Dwyer, H. Linke, E. Hoffmann, T. E. Humphrey, R. A. Lewis and C. Zhang
IEEE Publication (Conference Book) Title: '06 Int'l Thermoelectric Conference (ICT'06).
Proceeding of the International Thermoelectric Conference (ICT'06), Vienna, Austria.
- Professional Talks:
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High-efficiency thermoelectric quantum dots
E.A. Hoffmann, N. Nakpathomkun, H.A. Nilsson, A.I. Persson, L. Samuelson, H. Linke.
Conference on Micro- and Nanocryogenics (MNC), a satellite of the 25th International Conference on Low Temperature Physics (LT25), Helsinki, Finland, August 3, 2008.
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Non-linear thermocurrent in quantum dots
E.A. Hoffmann, N. Nakpathomkun, A.I. Persson, H.A. Nilsson, L. Samuelson, H. Linke.
The International Conference on the Physics of Semiconductors (ICPS 2008), Rio de Janeiro, Brazil, July 29, 2008.
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Thermovoltage in Heterostructure InAs/InP Nanowires
E.A. Hoffmann, A.I. Persson, H. Linke, H.A. Nilsson, L. Fröberg, L. Samuelson
American Physics Society March Meeting: March 7, 2007.
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Thermoelectric Properties of Heterostructure InAs/InP Nanowires
Eric Hoffmann
MSI Retreat: December 14, 2006.
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The Growth of Nanowires and their Thermoelectric Applications
Eric Hoffmann
University of Oregon IGERT Student Seminar: November 17, 2006.
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The Quantum Mechanics of Carnot Efficiency
Eric Hoffmann
University of Oregon Physics Graduate Student Seminar: November 15, 2006.
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Thermoelectric Properties of Heterostructure Nanowires
Eric Hoffmann
Presented at the University of Oregon IGERT Student Seminar: December 2, 2005.
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Nanowires as high-efficiency Thermoelectrics
Eric Hoffmann
University of Oregon Physics Graduate Student Seminar: November 16, 2005.
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Thermoelectric Properties of Heterostructure Nanowires
Eric Hoffmann
Presented at the Lund University Quantum Transport Seminar: February 10, 2005.
- Posters Presentations:
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Quantum-dot thermoelectrics
E.A. Hoffmann, N. Nakpathomkun, A.I. Persson, H.A. Nilsson, L.E. Fröberg, L. Samuelson, H. Linke
Presented at the 2nd International Conference on One-Dimensional Nanostructures (ICON), Malmö, Sweden: September 26-29, 2007.
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Thermometry and Thermovoltage of 1D-0D-1D Structures in InAs/InP Nanowires
E.A. Hoffmann, A.I. Persson, N. Nakpathomkun, H. Nilsson, L. Fröberg, L. Samuelson, H. Linke
Presented at the 17th conference on Electronic Properties of Two-Dimensional Systems (EP2DS 17), Genoa, Italy: July 17, 2007.
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Thermoelectric characterization of a single quantum dot embedded in a nanowire
A.I. Persson, E.A. Hoffmann, L. Fröberg, M. O'Dwyer, H.A. Nilsson, L. Samuelson, and H. Linke
Presented at the Direct Thermal-to-Electrical Energy Conversion (DTEC) Program Review and Workshop, August 2006, San Diego, CA 92118.
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Quantum Thermoelectrics at Carnot Efficiency
Eric Hoffmann
Poster at the Northwest Meeting of the APS: May 2006.
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Thermoelectric Properties of Heterostructure Nanowires
Eric Hoffmann
Presented at the University of Oregon Materials Science Institute Retreat: September 13, 2005.