Hot electron electrochemistry at silver activated by femtosecond laser pulses
초속 레이저 펄스 는 은 의 열 전자 전기 화학 을 활성화시킨다
Electroquímica de electrones calientes de plata activada por pulsos láser femtosegundos
Impulsions laser femtosecondes activent l'électrochimie thermoélectronique de l'argent
фемтосекундный лазерный импульс активирует термоэлектронную электрохимию серебра
Oskar Armbruster ¹ ², Hannes Pöhl ², Wolfgang Kautek ²
¹ University of Natural Resources and Life Sciences, Vienna, Department of Bionanosciences, Muthgasse 11, 1190 Vienna, Austria
² University of Vienna, Department of Physical Chemistry, Währinger Straße 42, 1090 Vienna, Austria
Opto-Electronic Advances, 25 June 2023

A silver microelectrode with a diameter of 30 µm in an aqueous K2SO4 electrolyte was irradiated with 55 fs and 213 fs laser pulses. This caused the emission of electrons which transiently charged the electrochemical double layer. The two applied pulse durations were significantly shorter than the electron-phonon relaxation time.

The laser pulse durations had negligible impact on the emitted charge, which is incompatible with multiphoton emission. On the other hand, the observed dependence of emitted charge on laser fluence and electrode potential supports the thermionic emission mechanism.
Opto-Electronic Advances_1
Opto-Electronic Advances_2
Opto-Electronic Advances_3
Reviews and Discussions
In-fiber photoelectric device based on graphene-coated tilted fiber grating
Solar cell-based hybrid energy harvesters towards sustainability
8-nm narrowband photodetection in diamonds
31.38 Gb/s GaN-based LED array visible light communication system enhanced with V-pit and sidewall quantum well structure
High-speed multiwavelength InGaAs/InP quantum well nanowire array micro-LEDs for next generation optical communications
Vectorial spin-orbital Hall effect of light upon tight focusing and its experimental observation in azopolymer films
Encoding physics to learn reaction–diffusion processes
Accurate medium-range global weather forecasting with 3D neural networks
Hybrid bound states in the continuum in terahertz metasurfaces
Deep learning assisted variational Hilbert quantitative phase imaging
Multi-foci metalens for spectra and polarization ellipticity recognition and reconstruction
Spatio-temporal isolator in lithium niobate on insulator

Previous Article                                Next Article
Copyright © Hot Paper