Smaller and Faster: Magnetic Nanowires at Microwave Frequencies
ABSTRACT: This talk focuses on the dynamic properties of magnetic nanowires. After a short introduction to ensemble of non-interacting nanowires, the speaker moves to discuss a strongly interacting nanowire system (defining the density of nanoelements in applications). The dominating role of the long-range magnetostatic dipolar interactions is demonstrated in establishing a configurational reorientation transition. The interaction of magnetic nanowires with electromagnetic waves is controllable due to its size and shape sensitivity. The results of modeling the electrodynamic diffraction problem show how the properties of these flexible systems of ordered magnetic nanowires can be controlled and tuned up to the THz frequency range. Magnetic nanowire systems are serious contenders for novel microwave devices, based on the propagation of electromagnetic waves (EMWs) in the nanostructures, and they are already utilized in microwave devices, photonics, and plasmonics.
SPEAKER:
Martha Pardavi-Horvath
Professor Emerita of Engineering and Applied Science
School of Engineering and Applied Science
The George Washington University
5000 Science & Engineering Hall
800 22nd Street, NW
Washington, DC 20052
mpardavi@gwu.edu
Date and Time
Location
Hosts
Registration
- Date: 27 Aug 2019
- Time: 05:30 PM to 07:30 PM
- All times are (UTC-04:00) Eastern Time (US & Canada)
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- George Washington University
- 800 22nd Street, NW
- Washington, District of Columbia
- United States 20052
- Building: Science and Engineering Hall (SEH)
- Room Number: B1167
- Click here for Map
- Contact Event Host
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Patrick Johnson, Nano Fabrication Lab Manager, George Washington University
Cell 703 258 2465, Desk 202 994 2346, <paj1@email.gwu.edu>
- Starts 01 July 2019 12:00 PM
- Ends 26 August 2019 05:00 PM
- All times are (UTC-04:00) Eastern Time (US & Canada)
- No Admission Charge
Speakers
Martha Pardavi-Horvath, Prof. Em. of School of Engineering and Applied Science, George Washington University
Smaller and Faster: Magnetic Nanowires at Microwave Frequencies
OUTLINE:
*Introduction to magnetic nanowires
*From single magnetic nanowire to 2D nanowire arrays
-Interactions in nanowire arrays.
-Static magnetic properties of nanowires
-The role of shape anisotropy of nonellipsoidal magnetic elements
-Dipolar interaction effects in nanowire arrays
-Configurational phase transitions in arrays of nanowires
*Magnetic nanowires in electromagnetic fields
-EMW propagation in nanostructures
-EMW interactions with nanowire structures
-Shape and size effects in the EMW propagation in nanoarrays
-EMW scattering in nanowires at THz frequencies
*High frequency applications of magnetic nanowires
-Microwave devices based on magnetic nanowires
-Magnetic nanowire metamaterials: plasmonics and photonics
*Conclusions and future trends
Biography:
Professor Martha Pardavi-Horvath, having all her degrees in physics, her research interests are centered around magnetism and electromagnetism, bridging the disciplines of solid state physics, materials science, nanotechnology, and applications in microwave technology. The main focus of her research is on nanotechnology: what happens when magnetic things get smaller and faster (aka nanomagnetism at microwave frequencies), and applications of magnetic nanomaterials. She joined the ECE Department of SEAS of the George Washington University as a full professor in 1989. From 2006 to 2012 she served as the Associate Dean of SEAS. She has over 250 peer-reviewed publications, co-author of several monographies, she gave numerous invited talks all over the world. She is very active in the scientific community, serving on several administrative and editorial boards in professional societies.
Email:
Address:5000 Science & Engineering Hall, 800 22nd Street, NW , Washington, District of Columbia, United States, 20052
Agenda
5:30 PM - 6:00 PM Arrivals and Networking
6:00 PM - 6:05 PM Announcements and Introduction of Speaker
6:05 PM - 6:50 PM Presentation (40-45 minutes)
6:50 PM - 7:05 PM Questions and Answers
7:05 PM - 7:30 PM Reception
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