Zobrazeno 1 - 10
of 38
pro vyhledávání: '"David Shrekenhamer"'
Publikováno v:
2022 IEEE Research and Applications of Photonics in Defense Conference (RAPID).
Autor:
Juliana Vievering, David Shrekenhamer, Angelos Vourlidas, Nora Lane, Joseph Centurelli, Garret Bonnema, Chad Weiler, Joseph Miragliotta, Lance Oh, Robert Bruce
Publikováno v:
Space Telescopes and Instrumentation 2022: Optical, Infrared, and Millimeter Wave.
Publikováno v:
Scientific Reports, Vol 9, Iss 1, Pp 1-9 (2019)
Scientific Reports
Scientific Reports
Here we consider a tunable superconducting cavity that can be used either as a tunable coupler to a qubit inside the cavity or as a tunable low noise, low temperature, RF filter. Our design consists of an array of radio-frequency superconducting quan
Publikováno v:
2020 Fourteenth International Congress on Artificial Materials for Novel Wave Phenomena (Metamaterials).
A single metasurface is designed which can convert a traveling-wave antenna’s feed wave into a collection of radiation patterns. Multiple holographic patterns are jointly optimized to create a series of steered beams through a switched-feed archite
Autor:
David Shrekenhamer, Robert L. Schmid, Ra'id Awadallah, A. C. Malone, T. A. Sleasman, O. F. Somerlock
Publikováno v:
RWS
A reflectarray operating at 3.5 GHz is created with individual control of unit element reconfigurability for beamsteering in both azimuth and elevation. The unit element has been co-designed with a gallium arsenide (GaAs) FET on the back side of the
Autor:
Christine J. Zgrabik, David Shrekenhamer, Luke J. Currano, Garret T. Bonnema, Joseph A. Miragliotta, Andrew C. Strikwerda
Publikováno v:
Metamaterials, Metadevices, and Metasystems 2019.
The emergence of metasurface technology and its accompanying design principles are enabling the development of optical components with multiple functionalities, e.g., polarization discrimination and focusing. In this report, we highlight our experime
Autor:
Jarod C. Gagnon, Brupbacher Michael C, Adrian Podpirka, David Shrekenhamer, Christine M. Zgrabik
Publikováno v:
Journal of Vacuum Science & Technology B. 39:014001
Molecular beam epitaxial (MBE) deposition allows for the epitaxial growth of materials requiring atomically precise control of nanometer thick layers. A key concern with the growth of smaller bandgap materials on larger bandgap substrates via MBE is
Autor:
Adrian Podpirka, David Shrekenhamer, Jarod C. Gagnon, Jonathan M. Pierce, Christine M. Zgrabik
Publikováno v:
Journal of Vacuum Science & Technology B. 38:032210
Van der Waals layered GeTe/Sb2Te3 chalcogenide superlattices have demonstrated outstanding performance for use in dynamic resistive memories in what is known as interfacial phase change memory devices due to their low power requirement and fast switc
Publikováno v:
CCNC
We present simulated and experimental results from a conformal meta-antenna that was designed with a holographic-derived surface impedance for placement on a cylindrical surface. This class of antenna relies on the interaction between a surface wave
Publikováno v:
2017 IEEE SENSORS.
A microelectromechanical (MEMS) switch with an integrated, movable metasurface is combined with a fixed metasurface in the ground plane beneath the switch. Transmittance and bandwidth is tunable by actuation of the MEMS switch, bringing the two metas