Results 71 to 80 of about 47,052 (302)

Ectopically expressed rhodopsin is not sensitive to X-rays

BMC Neuroscience
Visual perception of X-radiation is a well-documented, but poorly understood phenomenon. Scotopic rod cells and rhodopsin have been implicated in visual responses to X-rays, however, some evidence suggests that X-rays excite the retina via a different ...
Kelli Cannon, Aundrea Bartley, Lynn Dobrunz, Mark Bolding   +3 more
doaj   +1 more source

Luminescent and Magnetic Properties of Fe3O4@SiO2:phen:Eu3+ [PDF]

Materials Research, 2017
Magnetite was doped with rare earth ions (europium) to produce core-shell materials with both magnetic and luminescent properties, i.e., a magnetic Fe3O4 oxide core and a SiO2:phen:Eu3+ shell.
Raphael Lucas de Sousa Silva, Alberthmeiry Teixeira de Figueiredo, Cristiano Morita Barrado, Marcelo Henrique Sousa   +3 more
doaj   +1 more source

Enhancement of luminescence properties of Eu3+:YVO4 in polymeric nanocomposites upon UV excitation [PDF]

, 2011
Highly emissive Eu3+:YVO4 nanocrystals were successfully prepared by the hydrothermal method. The average diameter of grains was determined to be 15 nm.
D. X. Loc, T. K. Anh, J. Doskocz, P. GŁuchowski, BETTINELLI, Marco Giovanni, T.K. Anh, A. Speghini, R. Lisiecki, D.X. Loc, M. Bettinelli, D. Hreniak, W. Stręk, N. Vu, SPEGHINI, Adolfo   +13 more
core   +1 more source

Phase Engineering of Atomically Precise Nanoclusters (APNCs) of Gold and Beyond

Advanced Materials, EarlyView.
Engineering the structural phase of materials is of paramount importance for both fundamental research and practical applications. In this Review, we summarize the recent progress in controlling the phases of atomically precise nanoclusters (APNCs) of gold, silver and copper, as well as bimetallic systems. The phase‐enabled material properties of APNCs
Yitong Wang, Avirup Sardar, Weijie Ji, Zhongyu Liu, Rongchao Jin   +4 more
wiley   +1 more source

State-of-the-art multimodal scanning hard X-ray imaging and tomography sheds light at multiple length-scales on biomineralization related processes

Frontiers in Environmental Chemistry
Biomineralization is a widespread process among living organisms, playing a significant role in the formation and preservation of geological structures, biogeochemical cycles, regulation of ocean chemistry, and carbon sequestration. Moreover pathological
K. Medjoubi, K. Benzerara, J. Debrie, E. Tang, D. Bazin, E. Letavernier, K. Desjardins, A. Somogyi   +7 more
doaj   +1 more source

Different Roles of Ce³⁺ Optical Centers in Oxyorthosilicate Nanocrystals at X-ray and UV Excitation

Crystals, 2019
Luminescence properties of Lu2SiO5:Ce3+ and Y2SiO5:Ce3+ nanocrystals were studied using photo- and X-ray luminescence techniques. The crystal structure of Re2SiO5 nanocrystals (P21/c space group) differs from the crystal structure of Re2SiO5 bulk ...
Vladyslav Seminko, Pavel Maksimchuk, Iryna Bespalova, Yuri Malyukin   +3 more
doaj   +1 more source

On the Optical Response of Tellurium Activated Zinc Selenide ZnSe:Te Single Crystal

Crystals, 2020
In this study, the light output of a zinc selenide activated with tellurium (ZnSe: Te) single crystal was measured for X-ray radiography applications. A cubic crystal (10 × 10 × 10 mm) was irradiated using X-rays with tube voltages from 50 to 130 kV. The
Dionysios Linardatos, Anastasios Konstantinidis, Ioannis Valais, Konstantinos Ninos, Nektarios Kalyvas, Athanasios Bakas, Ioannis Kandarakis, George Fountos, Christos Michail   +8 more
doaj   +1 more source

Temperature and exposure time-dependent scintillation of Eu(III) polyoxometalate under X-ray excitation [PDF]

, 2018
Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)Processo FAPESP: 2007/55332-7CNPq: 475512/2009-0Sodium decatungstoeuropate, Na9[Eu(W5O18)2]·14H2O, is a promising material to
Cebim, Marco Aurélio, Davolos, Marian Rosaly, Cebim, Marco Aurélio [UNESP], Davolos, Marian Rosaly [UNESP], Oliveira, Higor Henrique de Souza [UNESP], Oliveira, Higor Henrique de Souza   +5 more
core   +1 more source

Second‐Harmonic Hyper‐Mie Optical Activity Enables Closed‐Loop Chiral Photochemistry

Advanced Materials, EarlyView.
Nonlinear chiral photochemistry is demonstrated in CdTe/CdO nanohelices, where circularly polarized infrared light both drives and tracks photo‐oxidation via second‐harmonic scattering. This closed‐loop process reveals real‐time structural evolution, including shell fracturing and core exposure, accompanied by a transition from hyper‐Mie to hyper ...
Hoyeon Choi, Kody Whisnant, Ben J. Olohan, E. Petronijevic, G. Dan Pantoș, Nicholas A. Kotov, Ventsislav K. Valev   +6 more
wiley   +1 more source

Core and valence exciton formation in x-ray absorption, x-ray emission and x-ray excited optical luminescence from passivated Si nanocrystals at the Si L2,3edge [PDF]

, 2009
Resonant inelastic x-ray scattering (RIXS), x-ray absorption spectroscopy and x-ray excited optical luminescence (XEOL) have been used to measure element specific filled and empty electronic states over the Si L2,3 edge of passivated Si nanocrystals of ...
Kjeldgaard, L., Hunt, M. R. C., Krishnamurthy, S, Šiller, L, Horrocks, B. R, Houlton, A, Horrocks, B.R., Chakraborty, A. K., Šiller, L., Kjeldgaard, L, Chao, Y., Hunt, M. R. C, Horrocks, B. R., Chakraborty, A K, Hunt, M.R.C., Chakraborty, A.K., Hunt, M R C, Houlton, A., Horrocks, B R, Chao, Yimin, Krishnamurthy, S., Kjeldgaard, Lisbeth   +21 more
core   +1 more source