Results 41 to 50 of about 3,036 (288)

Development of non-hybridised HgCdTe detectors for the next generation of astronomical instrumentation [PDF]

, 2008
The superb image quality that is predicted, and even demanded, for the next generation of Extremely Large Telescopes (ELT) presents a potential crisis in terms of the sheer number of detectors that may be required.
Hails J, Giess J, Dennis P, Gordon N, Lees D, Cairns J, Dalton G, Jean Giess, John W. Cairns, Peter N. Dennis, Cairns, JW, David J. Lees, Neil T. Gordon, Janet E. Hails, Lees, DJ, David J. Hall, Hall, DJ, Hails, JE, Giess, J, Gavin B. Dalton, Hall D, Dennis, PN, Dalton, GB, Gordon, NT   +23 more
core   +1 more source

Titanium Suboxides Responsible for Electronic Anomaly Near Room Temperature in the Ti3C2Tx MXene

Advanced Functional Materials, EarlyView.
Our multi‐technique study reveals that the near‐room‐temperature anomaly in Ti3C2Tx MXene is linked to titanium suboxide nanodomains, including Ti3O5, embedded within the MXene host. Their temperature‐driven transformation provides an alternative explanation to solvent‐ and swelling‐based models and offers new insight into the thermally activated ...
Bence G. Márkus, Bradlee J. McIntosh, Lili Vajtai, Anna Nyáry, Sándor H. Sipos, Nirmal J. Ghimire, Ferenc Simon, László Forró, Dávid Beke   +8 more
wiley   +1 more source

Infrared fibres in astronomical instrumentation [PDF]

, 1995
For several years multi-object spectroscopy systems have been available for carrying out survey work in the visible region, but until very recently there has not been a system for the near infrared region.
Haynes, Roger
core  

Design and Performance of a 30/40 GHz Diplexed Focal Plane for the BICEP Array

The Astrophysical Journal Supplement Series
We demonstrate a wideband diplexed focal plane suitable for observing low-frequency foregrounds that are important for cosmic microwave background polarimetry.
Corwin Shiu, Ahmed Soliman, Roger O’Brient, Bryan Steinbach, James J. Bock, Clifford F. Frez, William C. Jones, Krikor. G. Megerian, Lorenzo Moncelsi, Alessandro Schillaci, Anthony D. Turner, Alexis C. Weber, Cheng Zhang, Silvia Zhang   +13 more
doaj   +1 more source

Giant Magnetic Coercivity Driven by Spin‐Bag Ferromagnetism in Epitaxial Sr3YCo4O10+δ Films with Engineered 2D Oxygen Vacancy Ordering

Advanced Functional Materials, EarlyView.
A giant magnetic coercivity and a vertical shift of hysteresis loops are demonstrated in Sr3YCo4O10+δ epitaxial films. The hard magnetic behavior originates from ferromagnetic spin bags stabilized within a long‐range ordered oxygen‐vacancy structure.
Yanbin Chen, Roger Guzman, Xiaomin Jia, Jialu Wu, Xing Xu, Li Sun, Jinbo Pan, Shixuan Du, Myung‐Hwan Whangbo, Wu Zhou, Jing Ma, Ce‐wen Nan, Chonglin Chen   +12 more
wiley   +1 more source

Infrared detectors for astronomical photometry [PDF]

, 2009
The work described in this thesis involved an investigation of the relative merits of selected inexpensive room temperature detectors for use in visible and near infrared astronomical photometry of bright stars.
Philip Wayne Thompson (20156277)
core  

Improving H2RG Performance in SPHEREx Brassboard Model

The Astrophysical Journal Supplement Series
Spectro-Photometer for the History of the Universe, Epoch of Reionization, and Ices Explorer is an upcoming NASA satellite mission to study the physics of inflation, the history of galaxy formation, and the abundance of biogenic ices in the Milky Way ...
Chi H. Nguyen, Phillip Korngut, C. Darren Dowell, James Bock, Jill Burnham, Samuel Condon, Walter Cook, Grigory Heaton, Howard Hui, Branislav Kecman, Hiromasa Miyasaka, Kenneth Manatt, Hien T. Nguyen, Stephen Padin, Marco Viero   +14 more
doaj   +1 more source

Effect of Optical Illumination on Bubble Nanodomains

Advanced Functional Materials, EarlyView.
Stable surface‐confined nanoscale bubble domains are created and manipulated in PMN‐PT single crystals. Under above‐bandgap illumination, these bubble nanodomains remain unchanged. However, upon illumination cessation, they rapidly expand to switch the entire crystal surface, due to the accumulation of a large reservoir of electrons at the crystal ...
Haoze Zhang, Anju Ahlawat, Richard F. Webster, Yunlong Sun, Dinesh Shukla, Danyang Wang, Jan Seidel, Alexei Gruverman, Pankaj Sharma   +8 more
wiley   +1 more source

A Dark-Matter Search Using the Final CDMS II Dataset and a Novel Detector of Surface Radiocontamination [PDF]

, 2012
Substantial evidence from galaxies, galaxy clusters, and cosmological scales suggests that ~85% of the matter of our universe is invisible. The missing matter, or "dark matter" is likely composed of non-relativistic, non-baryonic particles, which have ...
Ahmed, Zeeshan
core   +1 more source

Development of a low-noise 1 × 3 mosaic HgCdTe camera with high-precision thermal and flatness control for K-band imaging

AIP Advances
The K-band (2.0–2.4 μm) is crucial for observing astrophysical processes obscured by interstellar dust, such as star formation and active galactic nuclei.
Wen-qing Qu, Hao-ran Ma, Jiang-yuan Wei, Yu Ning, Zhe Geng, Yu Zhang, Hong-fei Zhang, Jian Wang   +7 more
doaj   +1 more source