Results 81 to 90 of about 154,815 (302)

Performance of the Imaging Fourier Transform Spectrometer with Photoconductive Detector Arrays: An Application for the AKARI Far-Infrared Instrument

, 2008
We have developed an imaging Fourier transform spectrometer (FTS) for space-based far-infrared astronomical observations. The FTS employs a newly developed photoconductive detector arrays with a capacitive trans-impedance amplifier, which makes the FTS a
DOI, Yasuo, KANEDA, Hidehiro, KAWADA, Mitsunobu, MATSUO, Hiroshi, MATSUURA, Shuji, MURAKAMI, Noriko, NAKAGAWA, Takao, OKADA, Yoko, OOTSUBO, Takafumi, SHIBAI, Hiroshi, SHIRAHATA, Mai, TAKAHASHI, Hidenori, YASUDA, Akiko, 中川, 貴雄, 土井, 靖生, 大坪, 貴文, 安田, 晃子, 岡田, 陽子, 川田, 光伸, 村上, 紀子, 松尾, 宏, 松浦, 周二, 白旗, 麻衣, 芝井, 広, 金田, 英宏, 高橋, 英則   +25 more
core   +1 more source

Oxide‐Free Titanium Coatings by Wire Arc Spraying in a Silane‐Doped Inert Atmosphere

Advanced Engineering Materials, EarlyView.
A silane‐doped argon atmosphere enables the production of oxide‐free titanium coatings via twin‐wire arc spraying at ambient pressure. This innovative approach eliminates residual oxygen, creating process conditions that prevent oxidation and nitride formation.
Manuel Rodriguez Diaz, Maik Szafarska, René Gustus, Kai Möhwald, Hans Jürgen Maier   +4 more
wiley   +1 more source

Experimental Study on Damage Effect of Mid-Infrared Pulsed Laser on Charge Coupled Device (CCD) and HgCgTe Detectors

Sensors
As the weak link in electro-optical imaging systems, photodetectors have always faced the threat of laser damage. In this paper, we experimentally investigated the damage mechanism of the photodetector induced by the out-of-band laser.
Yang Liu, Feng Zhou, Yunzhe Wang, Yin Zhang, Yunfeng Zhang, Hanyu Zheng, Junfeng Shao   +6 more
doaj   +1 more source

Infrared receivers for low background astronomy: Incoherent detectors and coherent devices from one micrometer to one millimeter [PDF]

The status of incoherent detectors and coherent receivers over the infrared wavelength range from one micrometer to one millimeter is described. General principles of infrared receivers are included, and photon detectors, bolometers, coherent receivers ...
Boggess, N. W., Greenberg, L. T., Hauser, M. G., Houck, J. R., Low, F. J., Mccreight, C. R., Rank, D. M., Richards, P. L., Weiss, R.   +8 more
core   +1 more source

Mission Concept for the Single Aperture Far-Infrared (SAFIR) Observatory

, 2005
The Single Aperture Far-InfraRed (SAFIR) Observatory's science goals are driven by the fact that the earliest stages of almost all phenomena in the universe are shrouded in absorption by and emission from cool dust and gas that emits strongly in the far ...
A.W. Blain, C.D. Dowell, David T. Leisawitz, Dominic J. Benford, E.T. Young, J.W. Kooi, John C. Mather, L.W. Looney, M. Dragovan, M. Harwit, M.J. Amato, Michael J. Amato, National Academy of Sciences, National Academy of Sciences, P. Shirron, P.M. Harvey, S. Harvey Moseley   +16 more
core   +1 more source

Application of Raman and Photoluminescence Spectroscopy to MgO‐C Refractories

Advanced Engineering Materials, EarlyView.
Visible to near infrared luminescence of MgO is studied on MgO‐C bricks and nominally pure MgO powder, with focus on two similar sharp high‐intensity signals, at 699 and 871 nm, each surrounded by symmetrical sidebands. The nature of these sidebands is investigated by temperature‐dependent spectroscopic measurements, confirming phonon involvement by ...
Julia Richter, Felix Drechsler, Till M. J. Stadtmüller, Cameliu Himcinschi, Christos G. Aneziris, Jens Kortus   +5 more
wiley   +1 more source

High-speed long-wave infrared ultra-thin photodetectors

APL Photonics
The primary challenge for long-wavelength infrared (λ = 8–13 µm) detection has long been the mitigation of dark current while achieving a high conversion efficiency of optical to electrical signals. Often overlooked is the bandwidth of detector response,
Yinan Wang, Aaron J. Muhowski, Leland Nordin, Sukrith Dev, Monica Allen, Jeffery Allen, Daniel Wasserman   +6 more
doaj   +1 more source

Al–Cu Composite Casting of Laser‐Deoxidized Copper: Bonding, Interfacial Chemistry, and Thermal Conductivity

Advanced Engineering Materials, EarlyView.
This study investigates laser‐based oxide removal of Cu inserts in oxygen‐free conditions and examines long‐term oxidation kinetics and surface chemistry under different atmospheres via X‐ray photoelectron spectroscopy. Al–Cu compound casting with differently oxidized surfaces is performed, and intermetallic phase formation, morphology, and thermal ...
Timon Steinhoff, Finn‐Lennard Janthur, Sascha Zimmermann, Sarah Seffer, Jörg Hermsdorf, René Gustus, Ludger Overmeyer, Wolfgang Maus‐Friedrichs, Hans Jürgen Maier, Christian Klose   +9 more
wiley   +1 more source

Impact of Sustainable Binders Based on Lignin and Collagen on the Volume Stability and Mechanical Properties of MgO‐C Refractories with MgO‐C Recyclates

Advanced Engineering Materials, EarlyView.
Collagen hydrolysate is evaluated as a sustainable binder for MgO‐C refractories. Its thermally induced cross‐linking and gas release lead to expansion and cracking in large bricks, but tailored batches with lignin, recyclates, or fine graphite improve the gas release while thermal treatment and stability.
Till M. J. Stadtmüller, Florian Kerber, Kirsten Moritz, Steffen Dudczig, Konstantin Kraushaar, Thomas Schemmel, Jana Hubálková, Patrick Gehre, Christos G. Aneziris   +8 more
wiley   +1 more source

Balloon borne humidity and aerosol sensors [PDF]

Infrared detectors for balloon sensing of aerosols and atmospheric ...
Barker, D. B., Murcray, P. G.
core   +1 more source