Exploració per autor "Amat Roldán, Iván"

Ara es mostren els items 3-7 de 7

    • 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'editorial
      In 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 obert
      Purpose: 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'editorial
      In 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 obert
      In 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 obert
      We 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 ...