Results 31 to 40 of about 2,287 (158)

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

open access: yesAdvanced Optical Materials, Volume 14, Issue 7, 16 February 2026.
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

Programática para Calcular la Emisión Electromagnética de Cherenkov en Cristales Fotónicos con Estructura Aleatoria

open access: yesProgramación Matemática y Software, 2019
En este artículo, estudiamos numéricamente la emisión óptica de Cherenkov, por una carga no relativista que se mueve de manera uniforme sobre la superficie de un cristal fotónico 2- D con perturbaciones aleatorias.
Erika Martínez Sánchez   +2 more
doaj  

Una propuesta para la arquitectura informática del sistema de control de un edificio

open access: yesInformes de la Construccion, 2004
La necesidad de realizar un control automático óptimo de las instalaciones de un edificio ha provocado que un nuevo tipo de ordenadores, diferentes de los ordenadores de sobremesa que utilizan personalmente los habitantes del edificio, entren a formar ...
Gracián Triviño Barros
doaj   +1 more source

Nonlinear Controller Design and its Optimization for Real‐Time Implementation for a Servo Motor Drive

open access: yesIET Control Theory &Applications, Volume 20, Issue 1, January/December 2026.
This paper proposes an EXP‐PI controller as a practical alternative to the conventional PI controller, integrating EXP functions on the error and its rate within the control structure. The controller is optimized using five recent intelligent algorithms, with SFS providing the most effective parameter tuning.
Emre Çelik   +7 more
wiley   +1 more source

Plasmons infrarojos i corrent fotònica en grafè [PDF]

open access: yes, 2012
[ANGLÈS] Light absorption plays a crucial role in both optical detectors and photovoltaics. In order to improve the light absorption properties of materials different measures can be taken.
Woessner, Achim
core   +3 more sources

TRANSFER OF ACHNANTHES LOOSERI FRENGUELLI TO THE GENUS PLANOTHIDIUM TRASLADO DE ACHNANTHES LOOSERI FRENGUELLI AL GENERO PLANOTHIDIUM

open access: yesGayana: Botanica, 2009
Se estudió el material tipo de Achnanthes looseri Frenguelli mediante técnicas de microscopía fotónica y electrónica de barrido. Se propone el traslado de la especie al género Planothidium. Se designa el lectotipo y se entrega una diagnosis corregida del
Patricio Rivera, Fabiola Cruces
doaj  

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

Autoheterodyne characterization of narrow-band photon pairs [PDF]

open access: yes, 2021
We describe a technique to measure photon pair joint spectra by detecting the time-correlation beat note when nondegenerate photon pairs interfere at a beam splitter.
Prakash, Vindhiya   +2 more
core   +1 more source

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

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