Zobrazeno 1 - 10
of 95
pro vyhledávání: '"Rosa Weigand"'
Publikováno v:
Results in Optics, Vol 15, Iss , Pp 100642- (2024)
The interaction of a fluorescent molecule 4-methoxy-N-[2-(1-pyrrolidine)ethyl]-1,8-naphthalimide (MNN) with iron oxide γ-Fe2O3 (maghemite) nanoparticles (IONPs) in water is demonstrated through fluorescence, Nuclear Magnetic Resonance (1H NMR) and D
Externí odkaz:
https://doaj.org/article/ff75a62801be428fb71ef317eca08a66
Publikováno v:
AIP Advances, Vol 14, Iss 2, Pp 025101-025101-4 (2024)
The design of multifunctional magnetic nanoparticles (NPs) that can generate and monitor heat release in real-time during thermal therapy is a major challenge in nanomedicine. In this work, a trimodal system that combines magnetic hyperthermia (MH),
Externí odkaz:
https://doaj.org/article/0ee9fcaa53754260936b9dd0ac913b22
Autor:
Óscar Pérez-Benito, Rosa Weigand
Publikováno v:
Photonics, Vol 10, Iss 8, p 947 (2023)
We take advantage of the dual emission properties of up-conversion fluorescence (UCF) and second harmonic generation (SHG) in Er3+-doped perovskite Na0.95Er0.05Nb0.9Ti0.1O3 to fully temporally characterize the ultrashort laser pulse that excites Er3+
Externí odkaz:
https://doaj.org/article/9c8f7e1608324ebf9e4e182bee0cbd06
Publikováno v:
Nanomaterials, Vol 13, Iss 3, p 450 (2023)
A systematic study on laser-induced heating carried out in two biological windows (800 nm and 1053 nm) for Fe3O4 nanoparticles in water suspension showed evidence of the strong dependence of the specific absorption rate (SAR) on extrinsic parameters
Externí odkaz:
https://doaj.org/article/e1693c3569d546e586365085426da5ed
Autor:
Rosa Weigand, Helder M. Crespo
Publikováno v:
Applied Sciences, Vol 5, Iss 3, Pp 485-515 (2015)
By crossing two intense ultrashort laser pulses with different colors in a transparent medium, like a simple piece of glass, a fan of multicolored broadband light pulses can be simultaneously generated. These newly generated pulses are emitted in sev
Externí odkaz:
https://doaj.org/article/7fe547a50e8546cb82de2c647b65c3c7
Publikováno v:
Applied Sciences, Vol 5, Iss 3, Pp 566-574 (2015)
We have numerically studied the influence of the absorption modulation depth of carbon-based saturable absorbers (graphene and carbon nanotubes (CNTs)) on the Q-switched regime of a diode-pumped Nd:YLF laser. A short-length cavity was used with an en
Externí odkaz:
https://doaj.org/article/54c9c221932c4eec9a3c82ef3f5030ab
Autor:
Óscar Pérez-Benito, Miguel Ángel Antón, Esteban Urones-Garrote, Susana García-Martín, Ester García-González, Rosa Weigand
Publikováno v:
Optical Materials. 129:112500
Polar Na_(0.95)Er_(0.05)Nb_(0.9)Ti_(0.1)O_(3) perovskite has been synthesized as a nanostructured material by microwave assisted hydrothermal method. The characterization indicates that erbium is a constituent of the crystal structure and is preferen
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f4c76dc64ff71b745513db350b449110
https://doi.org/10.1016/j.optmat.2022.112500
https://doi.org/10.1016/j.optmat.2022.112500
Autor:
Oscar Pérez-Benito, Rosa Weigand
Publikováno v:
OSA Advanced Photonics Congress (AP) 2020 (IPR, NP, NOMA, Networks, PVLED, PSC, SPPCom, SOF).
We measure sub-7-fs laser pulses using commercially available BaTiO3 second-harmonic nanoparticles and the dispersion-scan technique. Scattering plays a key role in the retrieval algorithm to obtain the same results as in Beta-Barium-Borate crystals.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6bada5105c8926008e9fc4021a31a567
https://doi.org/10.1364/np.2020.nptu1e.5
https://doi.org/10.1364/np.2020.nptu1e.5
Publikováno v:
Optics letters. 44(4)
We present a new method based on self-diffraction dispersion-scan (SD d-scan) that enables the simultaneous measurement of two distinct ultrashort laser pulses in a region where they spatially and temporally overlap. This situation can arise when sam
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0369a79d729a3fb7361fc8aac16d78b6
https://pubmed.ncbi.nlm.nih.gov/30768037
https://pubmed.ncbi.nlm.nih.gov/30768037
Publikováno v:
E-Prints Complutense: Archivo Institucional de la UCM
Universidad Complutense de Madrid
E-Prints Complutense. Archivo Institucional de la UCM
instname
Universidad Complutense de Madrid
E-Prints Complutense. Archivo Institucional de la UCM
instname
We numerically demonstrate Q-switched operation of Titanium:Sapphire lasers using mono and multilayer graphene, deposited on a totally reflecting end mirror as a saturable absorber. Output energies, pulse duration and repetition frequencies of the Q-
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::34f51c051c72cfc81e40d7815832eae6
https://doi.org/10.1016/j.optlastec.2015.03.007
https://doi.org/10.1016/j.optlastec.2015.03.007