Results 51 to 60 of about 1,018,400 (245)

High-temperature thermionic emission microscope [PDF]

open access: yes, 1968
Thermionic emission microscope was designed to operate with metal specimen cathode temperatures of 2000 degrees ...
Hamerdinger, R. W., Campbell, A. E., Jr.
core  

Thermionic Energy Conversion in the Twenty-first Century: Advances and Opportunities for Space and Terrestrial Applications

open access: yesFrontiers in Mechanical Engineering, 2017
Thermionic energy conversion (TEC) is the direct conversion of heat into electricity by the mechanism of thermionic emission, the spontaneous ejection of hot electrons from a surface.
David B. Go   +8 more
doaj   +1 more source

Characterization and modeling analysis for metal-semiconductor-metal GaAs diodes with Pd/SiO₂ mixture electrode. [PDF]

open access: yesPLoS ONE, 2012
Characterization and modeling of metal-semiconductor-metal (MSM) GaAs diodes using to evaporate SiO₂ and Pd simultaneously as a mixture electrode (called M-MSM diodes) compared with similar to evaporate Pd as the electrode (called Pd-MSM diodes) were ...
Shih-Wei Tan, Shih-Wen Lai
doaj   +1 more source

Hot electron electrochemistry at silver activated by femtosecond laser pulses

open access: yesOpto-Electronic Advances, 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.
Oskar Armbruster   +2 more
doaj   +1 more source

Advances and Perspectives in Graphene‐Based Quantum Dots Enabled Neuromorphic Devices

open access: yesAdvanced Science, EarlyView.
Graphene‐based QDs are zero‐dimensional carbon nanomaterials with pronounced quantum confinement and tunable electronic structures. Herein, we summarize their synthesis strategies and functionalization methods, and highlight their functional roles and operating mechanisms in devices, as well as recent advances in neuromorphic electronics. We anticipate
Yulin Zhen   +9 more
wiley   +1 more source

Structural and Compositional Effects on the Scintillation Properties of Fast Emitting Metal‐Organic Frameworks

open access: yesAdvanced Science, EarlyView.
The crystalline structure, the atomic numbers of the constituent elementsand the size of MOF crystals each influence their photoluminescence and scintillation properties in distinct ways. Together, these factors provide valuable guidelines for designing systems with optimized performance and tunable timing characteristics, arising from the synergistic ...
Francesca Cova   +8 more
wiley   +1 more source

Thermionic Emission from Fullerenes

open access: yes, 1992
Fullerenes in the gas phase, excited by a pulsed laser, exhibit thermionic emission. We analyze the time dependence of the ion yield of Cn+ in a mass spectrometer.
Walder, Gerhard, Echt, Olof
core   +1 more source

Reverse I–V–T analysis of Ti and Ni Schottky diodes on 6H-SiC with three contact areas [PDF]

open access: yesAIP Advances
This work investigates the reverse-bias electrical behavior of Ti and Ni Schottky diodes fabricated on n-type 6H-SiC epitaxial layers, with contact areas of three different sizes: large (1.6 × 1.6 mm2), medium (1.6 × 0.4 mm2), and small (0.4 × 0.4 mm2 ...
Elhachani Bounab   +6 more
doaj   +1 more source

Toward High‐Resolution Polymeric Neural Interfaces: A Practical Guide for Electron Beam Lithography

open access: yesAdvanced Science, EarlyView.
Electron beam lithography (EBL) enables sub‐micron patterning of polymer‐based neural implants, overcoming the resolution limits of optical lithography. By addressing challenges such as charging, non‐planarity, and substrate heating, it supports higher channel density, improved miniaturization, and better long‐term tissue integration.
Hanna Karlsson‐Fernberg, Maria Asplund
wiley   +1 more source

Thermionic emission in gold nanoparticles under femtosecond laser irradiation observed with photoemission electron microscopy

open access: yesAIP Advances, 2019
This study reports that thermionic emission can dominate over multi-photon ionization in gold nanoparticles under femtosecond laser irradiation. The brightness of individual particles observed with photoemission electron microscopy increased steeply for ...
Bochao Li   +5 more
doaj   +1 more source

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