Materials Map

Discover the materials research landscape. Find experts, partners, networks.

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The Materials Map is an open tool for improving networking and interdisciplinary exchange within materials research. It enables cross-database search for cooperation and network partners and discovering of the research landscape.

The dashboard provides detailed information about the selected scientist, e.g. publications. The dashboard can be filtered and shows the relationship to co-authors in different diagrams. In addition, a link is provided to find contact information.

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Materials Map under construction

The Materials Map is still under development. In its current state, it is only based on one single data source and, thus, incomplete and contains duplicates. We are working on incorporating new open data sources like ORCID to improve the quality and the timeliness of our data. We will update Materials Map as soon as possible and kindly ask for your patience.

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University of Bern

in Cooperation with on an Cooperation-Score of 37%

Topics

Publications (6/6 displayed)

  • 2021VIS-IR Spectroscopy of Mixtures of Water Ice, Organic Matter, and Opaque Mineral in Support of Small Body Remote Sensing Observations9citations
  • 2018Polarimetry of Water Ice Particles Providing Insights on Grain Size and Degree of Sintering on Icy Planetary Surfaces33citations
  • 2016An interpretation of the CONSERT and SESAME-PP results based on new permittivity measurements of porous water ice and ice-basaltic/organic dust mixtures suggests an increase of porosity with depth in 67Pcitations
  • 2016Characterization of the permittivity of controlled porous water ice-dust mixtures to support the radar exploration of icy bodies25citations
  • 2016A porosity gradient in 67P/C-G nucleus suggested from CONSERT and SESAME-PP results: an interpretation based on new laboratory permittivity measurements of porous icy analogues33citations
  • 2015Laboratory permittivity measurements of icy planetary analogs in the millimeter and submillimeter domains, in relation with JUICE mission.citations

Places of action

Chart of shared publication
Ciarniello, Mauro
1 / 11 shared
Raponi, Andrea
1 / 4 shared
Filacchione, Gianrico
1 / 20 shared
Schröder, Stefan E.
1 / 1 shared
Kappel, David
1 / 1 shared
Poch, Olivier
4 / 5 shared
Istiqomah, Istiqomah
1 / 1 shared
Mennella, Vito
1 / 3 shared
Beck, Pierre
1 / 7 shared
Rousseau, Batiste
1 / 2 shared
Moroz, Lyuba V.
1 / 1 shared
Vinogradoff, Vassilissa
1 / 2 shared
Sultana, Robin
1 / 1 shared
Pilorget, Cedric
1 / 1 shared
Schmitt, Bernard
1 / 3 shared
Quirico, Eric
1 / 12 shared
Poch, O.
2 / 3 shared
Cerubini, R.
1 / 1 shared
Thomas, N.
2 / 8 shared
Jost, B.
1 / 1 shared
Sabouroux, Pierre
2 / 13 shared
Gall, Alice Le
1 / 3 shared
Lethuillier, Anthony
1 / 9 shared
Encrenaz, Pierre
2 / 8 shared
Thomas, Nicolas
3 / 6 shared
Kofman, Wlodek W.
1 / 21 shared
Ciarletti, Valérie
1 / 34 shared
Neves, Luisa
2 / 2 shared
Brouet, Yann
3 / 9 shared
Herique, Alain
1 / 17 shared
Levasseur-Regourd, Anny Chantal
3 / 30 shared
Kofman, Wlodek
1 / 9 shared
Ciarletti, V.
1 / 5 shared
Szopa, C.
1 / 1 shared
Levasseur-Regourd, A. C.
1 / 3 shared
Lethuillier, A.
1 / 1 shared
Hérique, A.
1 / 1 shared
Encrenaz, P.
1 / 2 shared
Carrasco, N.
1 / 2 shared
Brouet, Y.
1 / 5 shared
Le Gall, A.
1 / 1 shared
Kofman, W.
1 / 3 shared
Neves, L.
1 / 3 shared
Sabouroux, P.
1 / 6 shared
Jacob, Karl
1 / 3 shared
Murk, Axel
1 / 1 shared
Chart of publication period
2021
2018
2016
2015

Co-Authors (by relevance)

  • Ciarniello, Mauro
  • Raponi, Andrea
  • Filacchione, Gianrico
  • Schröder, Stefan E.
  • Kappel, David
  • Poch, Olivier
  • Istiqomah, Istiqomah
  • Mennella, Vito
  • Beck, Pierre
  • Rousseau, Batiste
  • Moroz, Lyuba V.
  • Vinogradoff, Vassilissa
  • Sultana, Robin
  • Pilorget, Cedric
  • Schmitt, Bernard
  • Quirico, Eric
  • Poch, O.
  • Cerubini, R.
  • Thomas, N.
  • Jost, B.
  • Sabouroux, Pierre
  • Gall, Alice Le
  • Lethuillier, Anthony
  • Encrenaz, Pierre
  • Thomas, Nicolas
  • Kofman, Wlodek W.
  • Ciarletti, Valérie
  • Neves, Luisa
  • Brouet, Yann
  • Herique, Alain
  • Levasseur-Regourd, Anny Chantal
  • Kofman, Wlodek
  • Ciarletti, V.
  • Szopa, C.
  • Levasseur-Regourd, A. C.
  • Lethuillier, A.
  • Hérique, A.
  • Encrenaz, P.
  • Carrasco, N.
  • Brouet, Y.
  • Le Gall, A.
  • Kofman, W.
  • Neves, L.
  • Sabouroux, P.
  • Jacob, Karl
  • Murk, Axel
OrganizationsLocationPeople

article

A porosity gradient in 67P/C-G nucleus suggested from CONSERT and SESAME-PP results: an interpretation based on new laboratory permittivity measurements of porous icy analogues

  • Ciarletti, V.
  • Szopa, C.
  • Poch, O.
  • Levasseur-Regourd, A. C.
  • Lethuillier, A.
  • Hérique, A.
  • Encrenaz, P.
  • Carrasco, N.
  • Brouet, Y.
  • Le Gall, A.
  • Pommerol, Antoine
  • Kofman, W.
  • Neves, L.
  • Sabouroux, P.
  • Thomas, N.
Abstract

The Rosetta spacecraft made a rendezvous with comet 67P/Churyumov-Gerasimenko (67P) in 2014 August, soon after the Philae module landed on the small lobe of the nucleus on 2014 November 12. The CONSERT instrument, onboard Rosetta and Philae, sounded the upper part of the interior of 67P with radiowaves at 90 MHz and determined an average of the real part of the permittivity (hereafter ɛ<SUP>΄</SUP>) equal to about 1.27. The SESAME-PP instrument, onboard Philae, sounded the near-surface of the small lobe in the 400-800 Hz range and determined a lower limit of ɛ<SUP>΄</SUP> equal to 2.45. We use a semi-empirical formula obtained from measurements of ɛ<SUP>΄</SUP> performed in the laboratory at 243 K on water ice and ice-basaltic dust mixtures, with a controlled porosity in the 31-91 per cent range and a dust-to-ice volumetric ratio in the 0.1-2.8 range, to interpret the results of the two instruments, taking into account the temperature and frequency dependences. A graphical method is proposed to derive ranges of porosity and dust-mass fraction from a value of ɛ<SUP>΄</SUP> derived from observations. The non-dispersive behaviour of ɛ<SUP>΄</SUP> below 175 K, allows us to compare the values of ɛ<SUP>΄</SUP> obtained by CONSERT and SESAME-PP. We show that the porosity of the small lobe of 67P increases with depth. Based on new measurements of analogues of complex extraterrestrial organic matter, the so-called tholins, we also suggest that, for the dust component in the cometary material, the presence of silicates has more effect on ɛ<SUP>΄</SUP> than organic materials....

Topics
  • porous
  • impedance spectroscopy
  • surface
  • porosity