@Article{CarlessoViBeSaOlFiMi:2020:PhOpPr,
author = "Carlesso, Franciele and Vieira, Luis Eduardo Antunes and Berni,
Luiz Angelo and Savonov, Graziela da Silva and Oliva, Alberto
Remesal and Finsterle, Wolfgang and Miranda, Edson Luiz de",
affiliation = "{Instituto Nacional de Pesquisas Espaciais (INPE)} and {Instituto
Nacional de Pesquisas Espaciais (INPE)} and {Instituto Nacional de
Pesquisas Espaciais (INPE)} and {Instituto Nacional de Pesquisas
Espaciais (INPE)} and {Physikalisch-Meteorologisches Observatorium
Davos} and {Physikalisch-Meteorologisches Observatorium Davos} and
{Instituto Nacional de Pesquisas Espaciais (INPE)}",
title = "Physical and optical properties of ultra-black nickel-phosphorus
for a total solar irradiance measurement",
journal = "The Astrophysical Journal Supplement Series",
year = "2020",
volume = "248",
number = "248",
pages = "4",
abstract = "The total solar irradiance at the top of the atmosphere is the
primary source of energy of the Earths highly coupled
atmospherelandocean system. Small fluctuations of the solar flux
density in scales from years to millennia could impact the energy
balance of this system due to nonlinear effects. The
quantification of this variability depends on absolute radiometers
on board of space-based platforms. Although there has been
significant improvement in the design and calibration of absolute
radiometers during the last decades, the uncertainties in the
measurements have not allowed us to untangle the natural and
anthropogenic drivers of the observed changes of the climatic
patterns appropriately. One of the critical components of the
absolute radiometers is the coating of the sensor elements, which
should absorb the radiation efficiently. Here we discuss the
optical characteristics of ultra-black Nickel Phosphorus (NiP) and
its relations with the surface morphology. The ultra-black NiP has
important unique properties such as low reflectance and uniformity
of deposition in complex geometries. NiP multilayer was deposited
by electroless on aluminum substrates. The surface was etched by
oxidizing acid to produce ultra-black NiP. Characterization
techniques were used to describe the properties of the material.
We describe the directional reflectance employing the
bidirectional reflectance distribution function. Additionally, we
used reflectance maps to show the influence of the pores on the
reflectance. Ultra-black NiP exhibited a high absorptance and
dependence with the light incidence angle. Based on the results,
the material demonstrated the opportunity of many terrestrial and
space applications as a black coating absorber.",
doi = "10.3847/1538-4365/ab7af8",
url = "http://dx.doi.org/10.3847/1538-4365/ab7af8",
issn = "0067-0049",
label = "lattes: 9831996893882845 2 CarlessoViBeSaReFiMi:2020:PhOpPr",
language = "pt",
targetfile = "carlesso_physical.pdf",
urlaccessdate = "24 abr. 2024"
}