Exploració per autor "Amat Roldán, Iván"
Ara es mostren els items 1-7 de 7
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Effect of molecular organization on the image histograms of polarization SHG microscopy
Psilodimitrakopoulos, Sotiris; Amat Roldán, Iván; Loza Álvarez, Pablo; Artigas García, David (2012)
Article
Accés obertBased on its polarization dependency, second harmonic generation (PSHG) microscopy has been proven capable to structurally characterize molecular architectures in different biological samples. By exploiting this polarization ... -
Estimating the helical pitch angle of amylopectin in starch using polarization second harmonic generation microscopy
Psilodimitrakopoulos, Sotiris; Amat Roldán, Iván; Loza Álvarez, Pablo; Artigas García, David (2010-08)
Article
Accés restringit per política de l'editorialStarch granules are among the brightest natural second harmonic generation (SHG) converters. They basically consist of amylose and amylopectin molecules and the source of the SHG signal is still undetermined. In the ... -
Imaging amylopectin's order in starch using 3-dimensional polarization SHG
Psilodimitrakopoulos, Sotiris; Amat Roldán, Iván; Artigas García, David; Loza Álvarez, Pablo (International Society for Photo-Optical Instrumentation Engineers (SPIE), 2011)
Text en actes de congrés
Accés restringit per política de l'editorialIn minimally destructive SHG biomedical imaging (high resolution optical slicing) is greatly desirable to extract the maximum of information from the light matter interaction. Here we develop a 3-D biophysical model and ... -
In vivo molecular changes in the retina of patients with multiple sclerosis
Alba Arbalat, Salut; Andorra, Magi; Sánchez Dalmau, Bernardo; Camos Carreras, Anna; Dotti Boada, Marina; Pulido-Valdeolivas, Irene; Llufriu, Sara; Blanco, Yolanda; Sepúlveda, Maria; Saiz Hinarejos, Albert; Batet Torrell, Óscar; Bilbao, Iker; Torre, Iratxe; Amat Roldán, Iván; Martínez Lapiscina, Elena H.; Villoslada, Pablo (Association for Research in Vision and Ophthalmology (ARVO), 2021-05-11)
Article
Accés obertPurpose: Raman spectroscopy allows molecular changes to be quantified in vivo from the tissues like the retina. Here we aimed to assess the metabolic changes in the retina of patients with multiple sclerosis (MS). Methods: ... -
Lost writing uncovered by laser two-photon fluorescence provides a terminus post quem for Roman colonization of Hispania Citerior
Cormack, I G; Loza-Álvarez, P; Sarrado, L; Tomás, S; Amat Roldán, Iván; Torner Sabata, Lluís; Artigas García, David; Guitart, Josep; Pera, J; Ros, J (Journal of Archeaological Science, 2007-10)
Article
Accés restringit per política de l'editorialIn this work, two-photon absorption fluorescence is used as a non-destructive method to detect the presence of paint upon an archaeological sample. The objective was to recover writing that, due to the discoloration caused ... -
Ultrashort laser pulse measurement for multiphoton microscopy
Amat Roldán, Iván (Universitat Politècnica de Catalunya, 2013-06-21)
Tesi
Accés obertIn this thesis, we address specific efforts towards developing the precise aspect of ultrashort laser pulse measurement in the context of biomedical research. The motivation for pursuing these new developments was triggered ... -
Ultrashort pulse characterisation with SHG collinear-FROG
Amat Roldán, Iván; Cormack, Iain G.; Loza Álvarez, Pablo; Gualda Manzano, Emilio José; Artigas García, David (2004-03)
Article
Accés obertWe outline criteria for fast and accurate acquisition of collinear FROG (CFROG) trace and how it can be transformed into the more traditional noncollinear FROG trace. The CFROG has an intrinsically simple geometry that ...