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Introductory university physics students ’ understanding of some key characteristics of classical theory of the electromagnetic field
(American Physical Society, 2018-11-12)
In this work, we explore how undergraduate students use classical field theory when describing physical phenomena in the context of introductory electromagnetism. We have extracted five key characteristics of the electric ...
Properties of Metal–Organic Coordination Networks Based on 3d Transition Metal Atoms
(MDPI, 2018-04)
The magnetic anisotropy and exchange coupling between spins localized at the positions of 3d transition metal atoms forming two-dimensional metal-organic coordination networks (MOCNs) grown on a Au(111) metal surface are ...
Transparent Glass-Ceramics Produced by Sol-Gel: A Suitable Alternative for Photonic Materials
(MDPI, 2018-01-30)
Transparent glass-ceramics have shown interesting optical properties for several photonic applications. In particular, compositions based on oxide glass matrices with fluoride crystals embedded inside, known as oxyfluoride ...
Ideas de los estudiantes universitarios sobre las relaciones trabajo y energía en Mecánica en cursos introductorios de Física
(Sociedade Brasileira de Fisica, 2018)
Las relaciones entre trabajo y energía continúan siendo fuentes de problemas de
enseñanza/aprendizaje en los cursos introductorios de física a nivel universitario, ya que implican conceptos abstractos y habilidades de ...
Accurate Determination of the Q Quality Factor in Magnetoelastic Resonant Platforms for Advanced Biological Detection
(MDPI, 2018-03)
The main parameters of magnetoelastic resonators in the detection of chemical (i.e., salts, gases, etc.) or biological (i.e., bacteria, phages, etc.) agents are the sensitivity S (or external agent change magnitude per Hz ...
Fabrication of Active Polymer Optical Fibers by Solution Doping and Their Characterization
(MDPI, 2018-12-31)
This paper employs the solution-doping technique for the fabrication of active polymer optical fibers (POFs), in which the dopant molecules are directly incorporated into the core of non-doped uncladded fibers. Firstly, ...
Influence of Cryogenic Treatment on Wear Resistance and Microstructure of AISI A8 Tool Steel
(MDPI, 2018-12)
The effects of deep cryogenic treatment (DCT) on the wear behavior of different tool steels have been widely reported in the scientific literature with uneven results. Some tool steels show a significant improvement in ...
Diseño iterativo de una secuencia de enseñanza-aprendizaje sobre el pricipio generalizado del trabajo y la energía en cursos universitarios de física general
(2018-07-23)
Las relaciones entre trabajo y energía en el currículum de mecánica para cursos de física a nivel introductorio en la Universidad, juegan un papel crucial en la comprensión de los estudiantes del mundo físico y su aplicación ...
Magnetic Characterization in the Rayleigh Region of Nanocrystalline Magnetic Cores
(MDPI, 2018-11-14)
We report on the structural and magnetic characterization of two nanocrystalline Finemet-type magnetic cores. The nanocrystalline structure developed after annealing the amorphous precursor alloy at 550 degrees C for 30 ...
Design and validation of an open-source modular Microplate Photoirradiation System for high-throughput photobiology experiments
(Public Library Science, 2018-10-05)
Research in photobiology is currently limited by a lack of devices capable of delivering precise and tunable irradiation to cells in a high-throughput format. This limits researchers to using expensive commercially available ...