Results 61 to 70 of about 48,891 (290)

New Astronomical Observations: Joseph Weber’s Contribution to Gravitational Waves and Neutrinos Detection

Substantia, 2017
Joseph Weber, form Maryland University, was a pioneer in the experimental research of gravitational waves and neutrinos. Today these two techniques are very promising for astronomical observation, since will allow to observe astrophysical phenomena under
Stefano Gottardo
doaj   +1 more source

Calibration of the Herschel SPIRE Fourier Transform Spectrometer [PDF]

, 2014
The Herschel SPIRE instrument consists of an imaging photometric camera and an imaging Fourier Transform Spectrometer (FTS), both operating over a frequency range of 450-1550 GHz.
Baluteau, J. -P., Bendo, G. J., Benielli, D., Ferlet, M., Fulton, T., Griffin, M. J., Hopwood, R., Imhof, P., Lim, T. L., Lu, N., Makiwa, G., Marchili, N., Naylor, D. A., Orton, G. S., Papageorgiou, A., Pearson, C. P., Polehampton, E. T., Schulz, B., Sidher, S. D., Spencer, L. D., Swinyard, B. M., Valtchanov, I., van der Wiel, M. H. D., Wu, R.   +23 more
core   +7 more sources

When Poor Exciton Dissociation Limits Photocurrents in Organic Solar Cells: Why Low Offset Non‐Fullerene Acceptor Blends Can't Be Efficient

Advanced Materials, EarlyView.
The energetic offset between the donor and the acceptor components in organic photoactive layers is central to the tradeoff between photovoltage and photocurrent losses. This Perspective covers the most important issues surrounding this topic in non‐fullerene acceptor blends, from the difficulty of accurately determining state energies and driving ...
Dieter Neher, Manasi Pranav
wiley   +1 more source

Characterizing Exoplanets in the Visible and Infrared: A Spectrometer Concept for the EChO Space Mission [PDF]

, 2013
Transit-spectroscopy of exoplanets is one of the key observational techniques to characterize the extrasolar planet and its atmosphere. The observational challenges of these measurements require dedicated instrumentation and only the space environment ...
Benneke, B., Bouwman, J., Crossfield, I. J. M., Cubillos, P. E., Detre, Ö. H., Ebert, M., Glauser, A. M., Grözinger, U., Güdel, M., Harrington, J., Henning, Th., Justtanont, K., Klaas, U., Krause, O., Lenzen, R., Madhusudhan, N., Meyer, M. R., Mordasini, C., Müller, F., Ottensamer, R., Plesseria, J. -Y., Quanz, S. P., Reiners, A., Renotte, E., Rohloff, R. -R., Scheithauer, S., Schmid, H. M., Schrader, J. -R., Seemann, U., Stam, D., van Boekel, R., Vandenbussche, B., Wehmeier, U.   +32 more
core   +2 more sources

Versatile Magneto‐Dielectric Response of Epitaxial Thin Films of the High Entropy Oxide Perovskite Nd(Cr0.2Mn0.2Fe0.2Co0.2Ni0.2)O3

Advanced Materials, EarlyView.
The magnetic high entropy oxide perovskite Nd(Cr0.2Mn0.2Fe0.2Co0.2Ni0.2)O3 exhibits a substantially large dielectric constant (εr) at room temperature, which shows distinct anionic and cationic contributions in the form of zero and finite bias peaks, respectively, down to its magnetic transition temperature (Tmag).
Roxana Capu, Ryan Thompson, C. Willem Rischau, Marli R. Cantarino, Premysl Marsik, Sergey L. Bud'ko, Neven Biškup, María Varela, Yurii G. Pashkevich, Serhii M. Orel, Thomas Prokscha, Andreas Suter, Jiangtao Zhao, Ugwumsinachi Oji, Marco Bonura, Peter Bencok, Zaher Salman, Stefano Gariglio, Christian Bernhard, Subhrangsu Sarkar   +19 more
wiley   +1 more source

The Simons Observatory: Beam Characterization for the Small Aperture Telescopes

The Astrophysical Journal
We use time-domain simulations of Jupiter observations to test and develop a beam reconstruction pipeline for the Simons Observatory Small Aperture Telescopes.
Nadia Dachlythra, Adriaan J. Duivenvoorden, Jon E. Gudmundsson, Matthew Hasselfield, Gabriele Coppi, Alexandre E. Adler, David Alonso, Susanna Azzoni, Grace E. Chesmore, Giulio Fabbian, Ken Ganga, Remington G. Gerras, Andrew H. Jaffe, Bradley R. Johnson, Brian Keating, Reijo Keskitalo, Theodore S. Kisner, Nicoletta Krachmalnicoff, Marius Lungu, Frederick Matsuda, Sigurd Naess, Lyman Page, Roberto Puddu, Giuseppe Puglisi, Sara M. Simon, Grant Teply, Tran Tsan, Edward J. Wollack, Kevin Wolz, Zhilei Xu   +29 more
doaj   +1 more source

High-Speed, Photon Counting CCD Cameras for Astronomy

, 2010
The design of electron multiplying CCD cameras require a very different approach from that appropriate for slow scan CCD operation. This paper describes the main problems in using electron multiplying CCDs for high-speed, photon counting applications in ...
King, David, Mackay, Craig, Staley, Tim D., Suess, Frank, Weller, Keith   +4 more
core   +1 more source

Photocatalytic Water Splitting on the Lunar Surface: Prospects for In Situ Resource Utilization

Advanced Materials Interfaces, EarlyView.
Water has been found in craters on the moon nearby locations which are illuminated >80% of the time. Photocatalysis uses energy from sunlight to drive chemical reactions such as water splitting to produce oxygen and hydrogen. It is a scalable technology that requires lighter equipment and utilizes resources available on the moon. ABSTRACT The discovery
Ranjani Kalyan, Thomas D. Small, Gregory F. Metha, Mahmoud Adel Hamza, Thomas J. O'Dea, Yideng Shen, Cameron J. Shearer   +6 more
wiley   +1 more source

Solution processable organic/inorganic hybrid ultraviolet photovoltaic detector

AIP Advances, 2016
Ultraviolet (UV) photodetector is a kind of important optoelectronic device which can be widely used in scientific and engineering fields including astronomical research, environmental monitoring, forest-fire prevention, medical analysis, and missile ...
Xiaopeng Guo, Libin Tang, Jinzhong Xiang, Rongbin Ji, Kai Zhang, Sin Ki Lai, Jun Zhao, Jincheng Kong, Shu Ping Lau   +8 more
doaj   +1 more source

Bioresorbable Mo–W Electrodes: Toward an Extended Operational Lifetime Through Controlled Alloying and Oxide Coating Engineering

Advanced Materials Interfaces, EarlyView.
Bioresorbable electrochemical sensors face instability in biofluids. Although alloys can mitigate rapid in vivo dissolution, Mo–W remains underexplored for sensing. This work engineers Mo–W films with a nanocrystalline oxide coating, improving stability and enabling reliable oxygen and pH sensing for up to 10 days, highlighting their potential for ...
C. Fernandes, Filippo Franceschini, Kitty Baert, Jon Ustarroz, I. Taurino   +4 more
wiley   +1 more source