Results 81 to 90 of about 21,384 (312)

Spectroscopic Properties of QSOs Selected from Ultraluminous Infrared Galaxy Samples

, 2002
We performed spectroscopic observations for a large infrared QSO sample with a total of 25 objects. The sample was compiled from the QDOT redshift survey, the 1 Jy ULIRGs survey and a sample obtained by a cross-correlation study of the IRAS Point Source ...
Baker J. C., Boller Th., Boller Th., Christopoulou P. E., Clements D. L., H. Wu, Joly M., Lawrence A., S. Mao, Voges W., Wang T., X. Y. Xia, X. Z. Zheng, Xia X. Y., Z. G. Deng, Zheng Z.   +15 more
core   +1 more source

A spectroscopic analysis of a sample of narrow-line Seyfert 1 galaxies selected from the Sloan Digital Sky Survey [PDF]

, 2016
We revisited the spectroscopic characteristics of narrow-line Seyfert 1 galaxies (NLS1s) by analysing a homogeneous sample of 296 NLS1s at redshift between 0.028 and 0.345, extracted from the Sloan Digital Sky Survey (SDSS-DR7) public archive. We confirm
Berton, M., Ciroi, S., Cracco, V., Di Mille, F., Foschini, L., La Mura, G., Rafanelli, P.   +6 more
core   +2 more sources

Thermal Processing Creates Water‐Stable PEDOT:PSS Films for Bioelectronics

Advanced Materials, Volume 37, Issue 13, April 2, 2025.
Instead of using chemical cross–linkers, it is shown that PEDOT:PSS thin films for bioelectronics become water‐stable after a simple heat treatment. The heat treatment is compatible with a range of rigid and elastomeric substrates and films are stable in vivo for >20 days.
Siddharth Doshi, Margaux O. A. Forner, Pingyu Wang, Salim El Hadwe, Amy T. Jin, Gerwin Dijk, Kenneth Brinson, Juhwan Lim, Antonio Dominguez‐Alfaro, Carina Yi Jing Lim, Alberto Salleo, Damiano G. Barone, Guosong Hong, Mark L. Brongersma, Nicholas A. Melosh, George G. Malliaras, Scott T. Keene   +16 more
wiley   +1 more source

Characterization of anatase TiO2 nanopowder by variable-temperature Raman spectroscopy [PDF]

Science of Sintering, 2009
Raman spectroscopy has been used for characterization of commercial nanosized TiO2 powder with declared grain size of 5 nm. The Raman spectra measured in Stokes and anti-Stokes regime confirm the anatase phase of TiO2 powder in temperature range 25-1173K.
Šćepanović Maja J., Grujić-Brojčin M., Dohčević-Mitrović Z.D., Popović Z.V.   +3 more
doaj   +1 more source

Strain Engineering of Magnetoresistance and Magnetic Anisotropy in CrSBr

Advanced Materials, EarlyView.
Biaxial compressive strain significantly enhances magnetoresistance and critical saturation fields in thin flakes of the 2D magnet CrSBr, along all three crystallographic axes. First‐principles calculations link these effects to strain‐induced increases in exchange interactions and magnetic anisotropy.
Eudomar Henríquez‐Guerra, Alberto M. Ruiz, Marta Galbiati, Álvaro Cortés‐Flores, Daniel Brown, Esteban Zamora‐Amo, Lisa Almonte, Andrei Shumilin, Juan Salvador‐Sánchez, Ana Pérez‐Rodríguez, Iñaki Orue, Andrés Cantarero, Andres Castellanos‐Gomez, Federico Mompeán, Mar Garcia‐Hernandez, Efrén Navarro‐Moratalla, Enrique Diez, Mario Amado, José J. Baldoví, M. Reyes Calvo   +19 more
wiley   +1 more source

Infinite Blueshift of Charged Null Particles

, 1994
3 pages, latex, no figures, some clarifying remarks added and typos ...
Mann, R. B., Sajko, W. N.
openaire   +2 more sources

Opportunities of Semiconducting Oxide Nanostructures as Advanced Luminescent Materials in Photonics

Advanced Materials, EarlyView.
The review discusses the challenges of wide and ultrawide bandgap semiconducting oxides as a suitable material platform for photonics. They offer great versatility in terms of tuning microstructure, native defects, doping, anisotropy, and micro‐ and nano‐structuring. The review focuses on their light emission, light‐confinement in optical cavities, and
Ana Cremades, Pedro Hidalgo, David Maestre, Ruth Martínez‐Casado, Emilio Nogales, Beatriz Rodríguez, G. Cristian Vásquez, Bianchi Méndez   +7 more
wiley   +1 more source

Porosity-induced blueshift of photoluminescence in CdSe

Journal of Applied Physics, 2006
Porous CdSe layers have been fabricated by anodic etching of n-type single crystalline substrates with different values of conductivity. The morphology and porosity of the layers thus produced were found to be controlled by the conductivity of the material, anodization voltage, and conditions of in situ UV illumination.
Monaico, E.V., Ursachi, V.V., Ursaki, V.V., Tighineanu, I.M., Tiginyanu, I.M., Dashevsky, Z.M., Casian, V.A., Kasiyan, V.A., Boyd, R.   +8 more
openaire   +3 more sources

Shell Universe: Reducing Cosmological Tensions with the Relativistic Ni Solutions

Astronomy
Recent discoveries of massive galaxies existing in the early universe, as well as apparent anomalies in Ωm and H0 at high redshift, have raised sharp new concerns for the ΛCDM model of cosmology. Here, we address these problems by using new solutions for
Matthew R. Edwards
doaj   +1 more source

The Largest Blueshifts of [O III] emission line in Two Narrow-Line Quasars

, 2004
We have obtained optical intermediate resolution spectra (R = 3000) of the narrow-line quasars DMS 0059-0055 and PG 1543+489. The [O III] emission line in DMS 0059-0055 is blueshifted by 880 km/s relative to Hbeta.
Boller T., Grupe D., Kentaro Aoki, Kouji Ohta, Toshihiro Kawaguchi   +4 more
core   +2 more sources