Results 31 to 40 of about 5,700 (159)

Fotónica: Algunas consideraciones sobre su desarrollo [PDF]

open access: yes, 1989
En el presente artículo se traza una visión global del panorama fotónico en nuestros días, intentando establecer las pautas de su desarrollo pasado, presente y futuro.
Martín Pereda, José Antonio
core   +1 more source

Attosecond dispersive soft X-ray absorption fine structure spectroscopy in graphite [PDF]

open access: yes, 2018
Phase transitions of solids and structural transformations of molecules are canonical examples of important photo-induced processes, whose underlying mechanisms largely elude our comprehension due to our inability to correlate electronic excitation with ...
Biegert, Jens   +10 more
core   +2 more sources

Ultrabroadband Excitation of Hot Carriers in Plasmonic Nanorods Revealed by Two‐Dimensional Electronic Spectroscopy

open access: yesAdvanced Optical Materials, EarlyView.
This work dissects the ultrafast response of polydisperse plasmonic nanorods using two‐dimensional electronic spectroscopy, uniquely combining temporal and spectral resolution. Our ultrabroadband pulses cover both transverse and longitudinal nanorods’ resonances, revealing sub‐200‐fs dynamics and distinct broadening mechanisms.
Andrea Schirato   +8 more
wiley   +1 more source

L´entrevista: "El láser és un element estrany que la física ha proporcionat a l'enginyeria". [PDF]

open access: yes, 2009
Entrevista a D. José Antonio Martín Pereda con motivo de su nombramiento como Doctor Honoris Causa por la Universidad Politécnica de Cataluña en ...
Martín Pereda, José Antonio
core   +1 more source

Chemical strengthening of float glasses: Effect of composition and structure

open access: yesJournal of the American Ceramic Society, Volume 109, Issue 1, January 2026.
Abstract Two silicate float glasses were considered in the present work: a typical clear soda lime silicate glass and a soda magnesia silicate glass. Both materials underwent chemical strengthening in KNO3, and a different behavior was pointed out in terms of potassium penetration and corresponding surface compression.
Vincenzo M. Sglavo   +3 more
wiley   +1 more source

A fotónica como motor de desenvolvimento económico e social do século XXI [PDF]

open access: yes, 2015
A luz, seja a do sol ou da lua, ou das estrelas, seja a dos pirilampos, a que sai do ecrã da televisão ou das lâmpadas da nossa sala, não só é um dos primeiros veículos de contacto com o mundo que nos rodeia como lhe acrescenta beleza e fascínio, em ...
Costa, Manuel F. M.
core  

Sustainable two‐step functionalization of carbon fibers (CFs) with polyethyleneimine and investigation of curing kinetics in composite materials

open access: yesPolymer Composites, Volume 46, Issue 13, Page 11965-11983, 10 September 2025.
We followed the functionalization steps outlined in the figure to obtain carbon fibers (CFs) functionalized with branched polyethyleneimine (b‐PEI). The entire process was carried out under mild conditions, including plasma activation and low‐temperature heating, using an eco‐friendly solvent (water).
Edoardo Albertini   +7 more
wiley   +1 more source

Graphene‐Based Opto‐Electronic Platform for Ultra‐Sensitive Biomarker Detection at Zeptomolar Concentrations

open access: yesSmall Methods, Volume 9, Issue 8, August 20, 2025.
An opto‐electronic graphene‐based biosensor detects immunoglobulin M (IgM) at 100 zeptomolar (10−19 M) concentration. It features a biofunctionalized gold electrode capacitively coupled to a graphene electrode via a water‐soaked paper strip. Surface potential changes induced by few affinity events are transduced as shifts of the graphene phonon ...
Matteo Piscitelli   +6 more
wiley   +1 more source

Spectroscopic Approach for the On-Line Monitoring of Welding of Tanker Trucks

open access: yesApplied Sciences, 2022
The appearance of defects during the manufacture of tanker trucks via arc-welding is a significant problem in the industry. A reliable low-cost and non-destructive on-line method could aid the discovery of solutions to overcome productivity problems ...
Jose J. Valdiande   +4 more
doaj   +1 more source

Algúns conceptos básicos de radiometría e fotometría [PDF]

open access: yes, 2013
Titulación: Licenciatura de Física -- Materia: Dispositivos OptoelectrónicosOs optoelectrónicos son dispositivos de base electrónica que emiten, modulan ou detectan radiación óptica, i.e.
Flores Seijas, José Ramón
core  

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