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Articles 121 - 150 of 172
Full-Text Articles in Condensed Matter Physics
Parameterization Of Secondary And Backscattered Electron Yields For Spacecraft Charging, Justin Christensen, Phil Lundgreen, Jr Dennison
Parameterization Of Secondary And Backscattered Electron Yields For Spacecraft Charging, Justin Christensen, Phil Lundgreen, Jr Dennison
Posters
No abstract provided.
Electron Yield Properties Of Low-Density Polyethylene, Jordan Lee, Jr Dennison
Electron Yield Properties Of Low-Density Polyethylene, Jordan Lee, Jr Dennison
Presentations
No abstract provided.
Electron Yield Of Low-Density Polyethylene, Jordan Lee, Jr Dennison
Electron Yield Of Low-Density Polyethylene, Jordan Lee, Jr Dennison
Presentations
No abstract provided.
Secondary Electron Yield Measurements Of Carbon Nanotube Forests: Dependence On Morphology And Substrate, Brian Wood, Justin Christensen, Gregory Wilson, T. -C. Shen, Jr Dennison
Secondary Electron Yield Measurements Of Carbon Nanotube Forests: Dependence On Morphology And Substrate, Brian Wood, Justin Christensen, Gregory Wilson, T. -C. Shen, Jr Dennison
Conference Proceedings
No abstract provided.
Wireless Antenna Detection Of Electrostatic Discharge Events, Allen Andersen, Jr Dennison
Wireless Antenna Detection Of Electrostatic Discharge Events, Allen Andersen, Jr Dennison
Posters
Wireless intra-spacecraft communication systems are being developed due to their potential for weight-saving and design flexibility compared to wired systems. Such systems are essentially an on-board Wi-Fi network allowing various spacecraft systems to communicate wirelessly.
Simulating Muscle Atrophy Due To Microgravity And Ionizing Radiation, Lori Caldwell, Eryn Hanson, Alexandra H. Nelson, Charles Harding, Jr Dennison, Elizabeth Vargis
Simulating Muscle Atrophy Due To Microgravity And Ionizing Radiation, Lori Caldwell, Eryn Hanson, Alexandra H. Nelson, Charles Harding, Jr Dennison, Elizabeth Vargis
Presentations
No abstract provided.
A Brief Review Of Ferroelectric Control Of Magnetoresistance In Organic Spin Valves, Xiaoshan Xu
A Brief Review Of Ferroelectric Control Of Magnetoresistance In Organic Spin Valves, Xiaoshan Xu
Xiaoshan Xu Papers
Magnetoelectric coupling has been a trending research topic in both organic and inorganic materials and hybrids. The concept of controlling magnetism using an electric field is particularly appealing in energy efficient applications. In this spirit, ferroelectricity has been introduced to organic spin valves to manipulate the magneto transport, where the spin transport through the ferromagnet/organic spacer interfaces (spinterface) are under intensive study. The ferroelectric materials in the organic spin valves provide a knob to vary the interfacial energy alignment and the interfacial crystal structures, both are critical for the spin transport. In this review, we introduce the recent efforts of …
The Promise Of Piezoelectric Polymers, Timothy D. Usher, Kimberley R. Cousins, Renwu Zhang, Stephen Ducharme
The Promise Of Piezoelectric Polymers, Timothy D. Usher, Kimberley R. Cousins, Renwu Zhang, Stephen Ducharme
Stephen Ducharme Publications
Recent advances provide new opportunities in the field of polymer piezoelectric materials. Piezoelectric materials provide unique insights to the fundamental understanding of the solid state. In addition, piezoelectric materials have a wide range of applications, representing billions of dollars of commercial applications. However, inorganic piezoelectric materials have limitations that polymer ferroelectric materials can overcome, if certain challenges can be addressed. This mini-review is a practical summary of the current research and future directions in the investigation and application of piezoelectric materials with an emphasis on polymeric piezoelectric materials. We will assume that the reader is well versed in the subject …
Unsupervised Machine Learning Account Of Magnetic Transitions In The Hubbard Model, Kelvin Ch'ng, Nick Vazquez, Ehsan Khatami
Unsupervised Machine Learning Account Of Magnetic Transitions In The Hubbard Model, Kelvin Ch'ng, Nick Vazquez, Ehsan Khatami
Faculty Publications
We employ several unsupervised machine learning techniques, including autoencoders, random trees embedding, and t-distributed stochastic neighboring ensemble (t-SNE), to reduce the dimensionality of, and therefore classify, raw (auxiliary) spin configurations generated, through Monte Carlo simulations of small clusters, for the Ising and Fermi-Hubbard models at finite temperatures. Results from a convolutional autoencoder for the three-dimensional Ising model can be shown to produce the magnetization and the susceptibility as a function of temperature with a high degree of accuracy. Quantum fluctuations distort this picture and prevent us from making such connections between the output of the autoencoder and …
Characterizing The Effects Of Radiation On Muscle Cells, Lori Caldwell, Charles Harding, Eryn Hanson, Jr Dennison, Elizabeth Vargis
Characterizing The Effects Of Radiation On Muscle Cells, Lori Caldwell, Charles Harding, Eryn Hanson, Jr Dennison, Elizabeth Vargis
Presentations
No abstract provided.
Wireless Antenna Detection Of Electrostatic Discharge Events, Allen Andersen, Jr Dennison
Wireless Antenna Detection Of Electrostatic Discharge Events, Allen Andersen, Jr Dennison
Posters
Wireless intra-spacecraft communication systems are being developed due to their potential for weight-saving and design flexibility compared to wired systems [1,2]. Such systems are essentially an on-board Wi-Fi network allowing various spacecraft systems to communicate wirelessly.
Effects Of Sample Adhesives Acoustic Properties On Spatial Resolution Of Pulsed Electroacoustic Measurements, Zachary Gibson, Jr Dennison, Lee Pearson, Erick Griffiths, Anthony Pearson, Virginie Griseri
Effects Of Sample Adhesives Acoustic Properties On Spatial Resolution Of Pulsed Electroacoustic Measurements, Zachary Gibson, Jr Dennison, Lee Pearson, Erick Griffiths, Anthony Pearson, Virginie Griseri
Conference Proceedings
No abstract provided.
Incorporating Electron Range Approximations Into Secondary Electron Emission Models, Gregory Wilson
Incorporating Electron Range Approximations Into Secondary Electron Emission Models, Gregory Wilson
Conference Proceedings
No abstract provided.
Secondary Electron Yield Measurements Of Carbon Nanotube Forests: Dependence On Morphology And Substrate, Brian Wood, Justin Christensen, Gregory Wilson, T C. Shen, Jr Dennison
Secondary Electron Yield Measurements Of Carbon Nanotube Forests: Dependence On Morphology And Substrate, Brian Wood, Justin Christensen, Gregory Wilson, T C. Shen, Jr Dennison
Posters
No abstract provided.
A Predictive Range Expression: Applications And Limitations, Gregory Wilson, Anne C. Starley, Lisa Phillipps, Jr Dennison
A Predictive Range Expression: Applications And Limitations, Gregory Wilson, Anne C. Starley, Lisa Phillipps, Jr Dennison
Journal Articles
No abstract provided.
Spin Hall And Nernst Effects Of Weyl Magnons, Vladimir Zyuzin, Alexey Kovalev
Spin Hall And Nernst Effects Of Weyl Magnons, Vladimir Zyuzin, Alexey Kovalev
Department of Physics and Astronomy: Faculty Publications
In this paper, we present a simple model of a three-dimensional insulating magnetic structure which represents a magnonic analog of the layered electronic system described by A. A. Burkov and L. Balents [Phys. Rev. Lett. 107, 127205 (2011)]. In particular, our model realizes Weyl magnons as well as surface states with a Dirac spectrum. In this model, the Dzyaloshinskii-Moriya interaction is responsible for the separation of opposite Weyl points in momentum space. We calculate the intrinsic (due to the Berry curvature) transport properties of Weyl and so-called anomalous Hall effect magnons. The results are compared with fermionic …
Isostructural Metal-Insulator Transition In Vo2, D. Lee, B. Chung, Y. Shi, G.-Y. Kim, Neil Campbell, F. Xue, K. Song, S.-Y. Choi, J. P. Podkaminer, T. H. Kim, P. J. Ryan, J.-W. Kim, Tula R. Paudel, J.-H. Kang, J. W. Spinuzzi, D. A. Tenne, Evgeny Y. Tsymbal, M. S. Rzchowski, L. Q. Chen, J. Lee, Chang-Beom Eom
Isostructural Metal-Insulator Transition In Vo2, D. Lee, B. Chung, Y. Shi, G.-Y. Kim, Neil Campbell, F. Xue, K. Song, S.-Y. Choi, J. P. Podkaminer, T. H. Kim, P. J. Ryan, J.-W. Kim, Tula R. Paudel, J.-H. Kang, J. W. Spinuzzi, D. A. Tenne, Evgeny Y. Tsymbal, M. S. Rzchowski, L. Q. Chen, J. Lee, Chang-Beom Eom
Evgeny Tsymbal Publications
No abstract provided.
Towards A Strong Spin–Orbit Coupling Magnetoelectric Transistor, Peter Dowben, Christian Binek, Kai Zhang, Lu Wang, Wai-Ning Mei, Jonathan P. Bird, Uttam Singisetti, Xia Hong, Kang L. Wang, Dmitri Nikonov
Towards A Strong Spin–Orbit Coupling Magnetoelectric Transistor, Peter Dowben, Christian Binek, Kai Zhang, Lu Wang, Wai-Ning Mei, Jonathan P. Bird, Uttam Singisetti, Xia Hong, Kang L. Wang, Dmitri Nikonov
Peter Dowben Publications
Here, we outline magnetoelectric (ME) device concepts based on the voltage control of the interface magnetism of an ME antiferromagnet gate dielectric formed on a very thin semiconductor channel with large spin–orbit coupling (SOC). The emphasis of the ME spin field-effect transistors (ME spin FET) is on an antiferromagnet spin–orbit read logic device and a ME spin-FET multiplexer. Both spin-FET schemes exploit the strong SOC in the semiconducting channel materials but remain dependent on the voltage-induced switching of an ME, so that the switching time is limited only by the switching dynamics of the ME. The induced exchange field spin …
Anisotropy And Phonon Modes From Analysis Of The Dielectric Function Tensor And The Inverse Dielectric Function Tensor Of Monoclinic Yttrium Orthosilicate, Alyssa Mock, Rafal Korlacki, Sean Knight, Mathias Schubert
Anisotropy And Phonon Modes From Analysis Of The Dielectric Function Tensor And The Inverse Dielectric Function Tensor Of Monoclinic Yttrium Orthosilicate, Alyssa Mock, Rafal Korlacki, Sean Knight, Mathias Schubert
Department of Electrical and Computer Engineering: Faculty Publications
We determine the frequency dependence of the four independent Cartesian tensor elements of the dielectric function for monoclinic symmetry Y2SiO5 using generalized spectroscopic ellipsometry from 40–1200 cm−1. Three different crystal cuts, each perpendicular to a principle axis, are investigated. We apply our recently described augmentation of lattice anharmonicity onto the eigendielectric displacement vector summation approach [A.Mock et al., Phys. Rev. B 95, 165202 (2017)], and we present and demonstrate the application of an eigendielectric displacement loss vector summation approach with anharmonic broadening. We obtain an excellent match between all measured and model-calculated dielectric …
Incorporating Electron Range Approximations Into Secondary Electron Emission Models, Gregory Wilson
Incorporating Electron Range Approximations Into Secondary Electron Emission Models, Gregory Wilson
Presentations
No abstract provided.
Wireless Antenna Detection Of Electrostatic Discharge Events, Allen Andersen, Jr Dennison
Wireless Antenna Detection Of Electrostatic Discharge Events, Allen Andersen, Jr Dennison
Posters
No abstract provided.
Characterizing The Effects Of Radiation On Muscle Cells, Lori Caldwell, Charles Harding, Eryn Hanson, Jr Dennison, Elizabeth Vargis
Characterizing The Effects Of Radiation On Muscle Cells, Lori Caldwell, Charles Harding, Eryn Hanson, Jr Dennison, Elizabeth Vargis
Presentations
No abstract provided.
Electron Range Computational Tool For Arbitrary Materials Over A Wide Energy Range, Gregory Wilson, Jr Dennison, Anne C. Starley
Electron Range Computational Tool For Arbitrary Materials Over A Wide Energy Range, Gregory Wilson, Jr Dennison, Anne C. Starley
Conference Proceedings
No abstract provided.
Time-Evolved Constant Voltage Conductivity Polymeric Materials, Brian Wood, Jr Dennison, David King
Time-Evolved Constant Voltage Conductivity Polymeric Materials, Brian Wood, Jr Dennison, David King
Conference Proceedings
No abstract provided.
Time-Evolved Constant Voltage Conductivity Measurements Of Common Spaceborne Polymeric Materials, Brian Wood, David King, Jr Dennison
Time-Evolved Constant Voltage Conductivity Measurements Of Common Spaceborne Polymeric Materials, Brian Wood, David King, Jr Dennison
Journal Articles
No abstract provided.
Using Quantile-Quantile Plots To Compare Experimental Apples And Oranges In Physics Labs, Allen Andersen, Jr Dennison
Using Quantile-Quantile Plots To Compare Experimental Apples And Oranges In Physics Labs, Allen Andersen, Jr Dennison
Posters
No abstract provided.
Parameterization Of Secondary And Backscattered Electron Yields For Spacecraft Charging, Jr Dennison, Phil Lundgreen, Justin Christensen
Parameterization Of Secondary And Backscattered Electron Yields For Spacecraft Charging, Jr Dennison, Phil Lundgreen, Justin Christensen
Posters
No abstract provided.
Effects Of Sample Adhesives Acoustic Properties On Spatial Resolution Of Pulsed Electroacoustic Measurements, Zachary Gibson, Jr Dennison, Lee Pearson, Erick Griffiths, Anthony Pearson, Virginie Griseri
Effects Of Sample Adhesives Acoustic Properties On Spatial Resolution Of Pulsed Electroacoustic Measurements, Zachary Gibson, Jr Dennison, Lee Pearson, Erick Griffiths, Anthony Pearson, Virginie Griseri
Posters
No abstract provided.
Electron Range Computational Tool For Arbitrary Materials Over A Wide Energy Range, Gregory Wilson, Anne C. Starley, Jr Dennison
Electron Range Computational Tool For Arbitrary Materials Over A Wide Energy Range, Gregory Wilson, Anne C. Starley, Jr Dennison
Posters
No abstract provided.
Functionalized Nanoporous Carbon Scaffolds For Hydrogen Storage Applications, Christopher L. Carr
Functionalized Nanoporous Carbon Scaffolds For Hydrogen Storage Applications, Christopher L. Carr
Doctoral Dissertations
"Recent efforts have demonstrated confinement in porous scaffolds at the nanoscale can alter the hydrogen sorption properties of metal hydrides, though not to an extent feasible for use in onboard hydrogen storage applications, proposing the need for a method allowing further modifications. The work presented here explores how the functionalization of nanoporous carbon scaffold surfaces with heteroatoms can modify the hydrogen sorption properties of confined metal hydrides in relation to non-functionalized scaffolds (FS). Investigations of nanoconfined LiBH4 and NaAlH4 indicate functionalizing the carbon scaffold surface with nitrogen can shift the activation energy of hydrogen desorption in excess of …