Results 31 to 40 of about 13,610,231 (348)

Construção e caracterização de uma célula fotoelétrica para fins didáticos

Revista Brasileira de Ensino de Física
Este artigo apresenta o desenvolvimento e a caracterização de uma célula de efeito fotoelétrico e um sistema de excitação e de medição adequados para uso didático em aulas de Física.
João Bernardes da Rocha Filho, Marcos Alfredo Salami, Vicente Hillebrand   +2 more
doaj   +1 more source

Zero-Energy Photoelectric Effect

Physical Review Letters
We predict a near-threshold (“zero energy”) peak in multiphoton ionization for a dynamical regime where the photon frequency is large compared to the binding energy of the electron. The peak position does not depend on the laser frequency but on the binding energy and the pulse duration.
Sajad Azizi, Ulf Saalmann, Jan M. Rost
openaire   +4 more sources

Femtosecond single-electron pulses generated by two-photon photoemission close to the work function

New Journal of Physics, 2015
Diffraction and microscopy with ultrashort electron pulses can reveal atomic-scale motion during matter transformations. However, the spatiotemporal resolution is significantly limited by the achievable quality of the electron source.
L Kasmi, D Kreier, M Bradler, E Riedle, P Baum   +4 more
doaj   +1 more source

Application of Nanoflexible Photoelectric Devices in Welding Tooling Equipment Systems

Advances in Materials Science and Engineering, 2022
With the continuous breakthrough of science and technology, all aspects related to science and technology are constantly updated and changing. Photoelectric devices, also known as photosensitive devices, work on principles based on the photoelectric ...
Wenping Tan, Honghua Liu, Hongmei Li, Shen Cao   +3 more
doaj   +1 more source

Ultraviolet-photoelectric effect for augmented contrast and resolution in electron microscopy [PDF]

, 2016
A new tool providing material contrast control in scanning electron microscopy (SEM) is demonstrated. The approach is based on deep-UV illumination during SEM imaging and delivers a novel material based contrast as well as higher resolution due to the ...
Gediminas Seniutinas, Armandas Balčytis, Saulius Juodkazis   +2 more
openalex   +3 more sources

γ-ray shielding and mechanical properties of NR/Bi2WO6 composites enhanced by interlayer bonds

He jishu
BackgroundRubber-based nanocomposites have become a research focus in the nuclear industry due to their wide application in wearable radiation protection devices.PurposeThis study aims to explore the γ-ray shielding mechanism of composite material of ...
LI Yintao, LIU Dongliang, ZHOU Yuanlin, ZHANG Quanping   +3 more
doaj   +1 more source

Comprehensive techno-economic analysis of solar photoelectric materials of different generations [PDF]

Омский научный вестник: Серия "Авиационно-ракетное и энергетическое машиностроение"
A possible solution to the global energy crisis is to use sunlight to generate electricity. Solar cells that convert solar energy into electricity have to be reliable and cost-effective to compete with conventional energy sources.
T. A. Duyun, Elmnifi Monaem Hamad
doaj   +1 more source

Studying the Effect of Light Incidence Angle on Photoelectric Parameters of Solar Cells by Simulation

International Journal of Renewable Energy Development, 2021
It is crucial to examine the dependence of photoelectric parameters of solar cells on the light incidence angle. In the present study, two solar cell models have been developed using the Sentaurus Technology Computer-Aided Design software package.
J. Gulomov, R. Aliev, Avazbek A. Mirzaalimov, Navruzbek А. Mirzaalimov, J. Kakhkhorov, B. Rashidov, Sodikjon Temirov   +6 more
semanticscholar   +1 more source

Intramolecular Down‐ and Up‐Conversion in Dimeric Tetracene Complexes Centered via Platinum(II) and Palladium(II)

Advanced Functional Materials, EarlyView.
Metal‐tetracene dimeric complexes are synthesized through the pyridyl coordination to either Pt(II) or Pd(II). Photophysical properties are systematically compared as a function of the metal using steady‐state and time‐resolved spectroscopy. The Pt(II) dimer exhibits efficient intramolecular singlet fission and subsequent intramolecular up‐conversion ...
Yifan Bo, Yuxuan Hou, Melchor Matabuena, Rik R. Tykwinski, Dirk M. Guldi   +4 more
wiley   +1 more source

Unassisted Photoelectrochemical Hydrogen Production Coupled with Selective Glucose Oxidation Using Metal Halide Perovskite Photoanodes

Advanced Functional Materials, EarlyView.
A metal halide perovskite‐based photoanode integrated with a CoNiFe layered double hydroxide (LDH) cocatalyst is reported for selective glucose oxidation reaction (GOR), achieving simultaneous and unassisted photoelectrochemical hydrogen production. This system delivers high photocurrent density, excellent Faradaic efficiency of GOR, and strong techno ...
Shujie Zhou, Xu Liu, Michael Gunawan, Yihao Shan, Ming Zhang, Shaine Lucas, Adhi Satriyatama, Denny Gunawan, Ao Wang, Xiaojie Yuan, Kaiwen Sun, Rose Amal, Xiaojing Hao   +12 more
wiley   +1 more source