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Negative thermal expansion near two structural quantum phase transitions Connor
(2017-12-18)
Recent experimental work has revealed that the unusually strong, isotropic structural negative thermal
expansion in cubic perovskite ionic insulator ScF3 occurs in excited states above a ground state tuned very near a ...
Cosmological Exact Solutions Set of a Perfect Fluid in an Anisotropic Space-Time in Petrov Type D
(2016-06)
In this document a set of exact solutions is obtained by using the model of a perfect fluid on an homogeneous and anisotropic space-time that belongs to (Local Rotational Symmetry) Petrov’s type D. This solutions represent ...
Quantum Theory of Triboelectricity
(2020-10-30)
We propose a microphysical theory of the triboelectric effect by which mechanical rubbing separates charges across the interface between two materials. Surface electrons are treated as an open system coupled to two baths, ...
Study of oxide bands in p-type porous silicon layers
(2019)
The interest in developing fast and reliable chemical and biochemical sensors in an inexpensive way is something that has attracted a lot of efforts in the last decades. One of the potential material candidates is ...
OpenDose: Open access resources for nuclear medicine dosimetry
(2020)
Radiopharmaceutical dosimetry depends on the localization in
space and time of radioactive sources and requires the estimation
of the amount of energy emitted by the sources deposited within
targets. In particular, when ...
Pressure dependence of ferroelectric quantum critical fluctuation
(2019-12-13)
Phase transitions to a long-range-ordered state driven by a softened phonon mode are ubiquitous across condensed matter physics, but the evolution of such a mode as the system is tuned to or from the transition has never ...
La Batalla de la Trinidad de Sarapiquí de 1856: Comprendiendo el origen de las municiones a través del análisis químico y microestructural
(2023)
Infografía sobre la investigación de muestras arqueológicas de la batalla de la Trinidad de Sarapiquí, campaña 1856-1857.