Results 71 to 80 of about 93,061 (238)

Oxygen Vacancies Driven Photoconductivity in Layered Cobaltite Epitaxial Films

Advanced Electronic Materials, EarlyView.
ABSTRACT Understanding photoinduced phenomena in complex oxides is crucial for developing next‐generation optoelectronic devices. Here, we report pronounced ultraviolet (UV) light‐induced photoconductivity in epitaxial PrBa1‐xCaxCo2O5+δ (x = 0.5) thin films grown on (001) LSAT substrates via pulsed laser deposition.
Yanbin Chen, Yiqun Liu, Xing Xu, Jing Ma, Ce‐wen Nan, Chonglin Chen   +5 more
wiley   +1 more source

Low‐Power Control Of Resistance Switching Transitions in First‐Order Memristors

Advanced Electronic Materials, EarlyView.
Joule losses are a serious concern in modern integrated circuit design. In this regard, minimizing the energy necessary for programming memristors should be handled with care. This manuscript presents an optimal control framework, allowing to derive energy‐efficient programming voltage protocols for resistance switching devices. Following this approach,
Valeriy A. Slipko, Alon Ascoli, Fernando Corinto, Yuriy V. Pershin   +3 more
wiley   +1 more source

The First VERITAS Telescope

, 2006
The first atmospheric Cherenkov telescope of VERITAS (the Very Energetic Radiation Imaging Telescope Array System) has been in operation since February 2005. We present here a technical description of the instrument and a summary of its performance.
A. Imran, A. Milovanovic, A. Syson, A.D. Falcone, Aharonian, Aharonian, Bradbury, C. Dowdall, C. Duke, D. Hanna, D. Horan, D. Kieda, D. Petry, D. Steele, D.A. Carter-Lewis, D.A. Williams, Davies, E. Hays, E. Linton, E.K. Little, E.T. Roache, F. Krennrich, F. Pizlo, G. Blaylock, G. Gillanders, G. Gyuk, G. Maier, G. Sleege, G.E. Kenny, G.H. Sembroski, Galbraith, H. Krawczynski, H. Manseri, H.J. Rose, H.M. Badran, Hanna, Hillas, Hinton, Hörandel, I. de la Calle Perez, I. Jung, J. Grube, J. Hall, J. Holder, J. Kildea, J. Knapp, J. Quinn, J.A. Toner, J.H. Buckley, J.P. Finley, J.S. Perkins, K. Gibbs, K. Ragan, K.J. Gutierrez, K.L. Byrum, Kubo, L. Valcarcel, L.F. Fortson, Lessard, Lorenz, M. Pohl, M. Schroedter, M.J. Lang, M.K. Daniel, Mohanty, O. Celik, O.J. Glidewell, P. Cogan, P. Dowkontt, P. Fortin, P. Kaaret, P. Moriarty, P.A. Ogden, P.T. Reynolds, Pühlhofer, R. Mukherjee, R. Wagner, R.A. Ong, R.J. White, R.W. Atkins, S. LeBohec, S.B. Hughes, S.J. Fegan, S.M. Bradbury, S.P. Swordy, S.P. Wakely, T.B. Humensky, T.C. Weekes, V.V. Vassiliev, Vacanti, W. Cui, Weekes, Weekes, Y.C.K. Chow   +93 more
core   +1 more source

Uranium Doped Gallium Nitride Epitaxial Thin Films

Advanced Electronic Materials, EarlyView.
Uranium was controllably added to gallium nitride using molecular beam epitaxy. The uranium atoms segregated into vertically oriented regions with higher doping levels. Concentrations up to a few percent were achieved without showing significant degradation in the crystalline quality or optical characteristics. Low electrical resistivity was maintained
J. Pierce Fix, Sabin Regmi, Aaron G. Penders, Sohail Shah, Kevin D. Vallejo, Volodymyr B. Buturlim, Belief Rifore, Krzysztof Gofryk, Mukesh Bachhav, Nicholas J. Borys, Brelon J. May   +10 more
wiley   +1 more source

A robotic telescope for university-level distance teaching

, 2018
We present aspects of the deployment of a remotely operable telescope for teaching practical science to distance learning undergraduate students. We briefly describe the technical realisation of the facility, PIRATE, in Mallorca and elaborate on how it ...
Baruch, Brodeur, Brodeur, Corter, Greene, Holmes, Jacobi, Kolb, Lowe, Lucas, Norton   +10 more
core   +2 more sources

Electric Field‐Induced Hole‐ and Electron‐Type Flat Bands in Twisted Double Bilayer Graphene

Advanced Electronic Materials, EarlyView.
The electronic structure of twisted double bilayer graphene is visualized using angle‐resolved photoemission spectroscopy with micrometer spatial resolution at twists of 3.1∘$^\circ$ and 6.0∘$^\circ$ as a function of gate voltage. Tunable hybridization effects and flat band formation occurs between valence and conduction band states due to a finite ...
Zhihao Jiang, Dongkyu Lee, Alfred J. H. Jones, Youngju Park, Paulina Majchrzak, Kimberly Hsieh, Chakradhar Sahoo, Thomas S. Nielsen, Kenji Watanabe, Takashi Taniguchi, Philip Hofmann, Yong P. Chen, Jeil Jung, Søren Ulstrup   +13 more
wiley   +1 more source

Gemini multi-conjugate adaptive optics system review II: Commissioning, operation and overall performance

, 2014
The Gemini Multi-conjugate Adaptive Optics System - GeMS, a facility instrument mounted on the Gemini South telescope, delivers a uniform, near diffraction limited images at near infrared wavelengths (0.95 microns- 2.5 microns) over a field of view of ...
Arriagada, Gustavo, Bec, Matthieu, Boccas, Maxime, Carrasco, Eleazar Rodrigo, Colazo, Felipe, d'Orgeville, Céline, Diggs, Sarah J., Ebbers, Angelic W., Edwards, Michelle L., Fesquet, Vincent, Galvez, Ramon L., Garrel, Vincent, Gausachs, Gaston, Lopez, Ariel, Lührs, Javier, Marchant, Claudio, Marin, Eduardo, McGregor, Peter, Montes, Vanessa, Moreno, Cristian, Neichel, Benoit, Pessev, Peter, Rambold, William N., Rigaut, François, Serio, Andrew, Trancho, Gelys, Trujillo, Chadwick, Urrutia, Cristian, van Dam, Marcos A., Vidal, Fabrice, Vucina, Tomislav B., Winge, Claudia, Young, Peter J.   +32 more
core   +3 more sources

Automatic Determination of Quasicrystalline Patterns from Microscopy Images

Advanced Intelligent Discovery, EarlyView.
This work introduces a user‐friendly machine learning tool to automatically extract and visualize quasicrystalline tiling patterns from atomically resolved microscopy images. It uses feature clustering, nearest‐neighbor analysis, and support vector machines. The method is broadly applicable to various quasicrystalline systems and is released as part of
Tano Kim Kender, Marco Corrias, Cesare Franchini   +2 more
wiley   +1 more source

Nonscanning large-area Raman imaging for ex vivo/in vivo skin cancer discrimination

, 2018
Imaging Raman spectroscopy can be used to identify cancerous tissue. Traditionally, a step-by-step scanning of the sample is applied to generate a Raman image, which, however, is too slow for routine examination of patients. By transferring the technique
Darvin, Maxim E., Gersonde, Ingo, Moralejo, Benito, Roth, Martin M., Schleusener, Johannes, Schmälzlin, Elmar, Thiede, Gisela   +6 more
core   +1 more source

New readout and data-acquisition system in an electron-tracking Compton camera for MeV gamma-ray astronomy (SMILE-II)

New readout and data-acquisition system in an electron-tracking Compton camera for MeV gamma-ray astronomy (SMILE-II)
For MeV gamma-ray astronomy, we have developed an electron-tracking Compton camera (ETCC) as a MeV gamma-ray telescope capable of rejecting the radiation background and attaining the high sensitivity of near 1 mCrab in space. Our ETCC comprises a gaseous time-projection chamber (TPC) with a micro pattern gas detector for tracking recoil electrons and a
openaire   +1 more source