Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Search Publications by: Thomas Mitchell Wallis (Fed)

Displaying 76 - 79 of 79

Phase Velocity in Resonant Structures

October 1, 2006

Author(s)

James R. Baker-Jarvis, Michael D. Janezic, Derik Love, Thomas Mitchell (Mitch) Wallis, Christopher L. Holloway, Pavel Kabos

In this paper we present a simple experimental procedure for studying the phase velocity behavior of a metafilm with tunable material properties. Using this approach we have studied the phase-velocity behavior of a metamaterial under different conditions

Einstein-de Haas effect in a NiFe film deposited on a microcantilever

September 18, 2006

Author(s)

Thomas Mitchell (Mitch) Wallis, John M. Moreland, Pavel Kabos

A new methods is presented for determining the magetomechanical ratio, g', in a thin ferromagnetic film deposited on a microcantilever via measurement of the Einstein-de Haas effect. An alternating magnetic field applied in the plane of the cantilever and

Near-Field Imaging of High Frequency Magnetic Fields with Calorimetric Cantilevers Probes

April 21, 2006

Author(s)

Simone Lee, Y. C. Lee, Thomas Mitchell (Mitch) Wallis, John M. Moreland, Pavel Kabos

Calorimetric probes for near-field imaging of high-frequency (1-20 GHz) magnetic fields were fabricated by depositing patterned metal structures on micromachined, dielectric multilayer cantilevers. In the presence of high-frequency magnetic fields, the

Microwave Power Imaging with Ferromagnetic Films Incorporated in Bimaterial Cantilevers

November 1, 2004

Author(s)

Thomas Mitchell (Mitch) Wallis, John M. Moreland, Billy F. Riddle, Pavel Kabos

We report an imaging technique that uses ferromagnetic films incorporated in bimaterial cantilevers for spatially resolved calorimetric detection of microwaves emitted by sources of high frequency (4 to 20 GHz) radiation. The ferromagnetic film absorbs