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Showing 1–13 of 13 results
Advanced filters: Author: Rhonda Stroud Clear advanced filters

  • A new study of samples from the Ryugu asteroid reveal a greater diversity of macromolecular organic matter than that found in related carbonaceous meteorites. Researchers find distinct populations of alkyl-aromatic grains, and organic carbonate is found with coarse-grained clay minerals

    • Bradley De Gregorio
    • George D. Cody
    • Yuichi Tsuda
    ResearchOpen Access
    Nature Communications
    Volume: 15, P: 1-11

  • A close-up look at the action of space weathering on carbonaceous asteroids, provided by Ryugu’s returned samples, highlights its role on the dehydration of the first micrometre-thick layer of the surface, possibly hiding a water-rich interior. The depth of the 2.7 µm hydration band may be an indication of the level of space weathering withstood by a C-type asteroid.

    • Takaaki Noguchi
    • Toru Matsumoto
    • Yuichi Tsuda
    ResearchOpen Access
    Nature Astronomy
    Volume: 7, P: 170-181

  • The composition and characteristics of a C-rich clast within the LaPaz Icefield 02342 meteorite suggests that the clast is composed of materials related to comets and icy bodies. The clast probably formed in the outer Solar System, was transported inward and finally accreted into LaPaz’s parent body.

    • Larry R. Nittler
    • Rhonda M. Stroud
    • Safoura Tanbakouei
    Research
    Nature Astronomy
    Volume: 3, P: 659-666

  • Here, the authors develop a reverse epitaxial process whereby a nanocrystalline Au film becomes highly textured and support a suspended 2D WSe2 overlayer. Surface plasmon polaritons are launched in nanostructured Au by laser excitation and couple remotely to single photon emitters present in WSe2.

    • Jose J. Fonseca
    • Andrew L. Yeats
    • Jeremy T. Robinson
    ResearchOpen Access
    Nature Communications
    Volume: 11, P: 1-8

  • Metallic iron nanoparticles within impact-generated glass on the Moon contain very high concentrations of Helium-3 imparted by space weathering and may represent an important helium reservoir, according to nanoscale observations of lunar soil samples.

    • Brittany A. Cymes
    • Katherine D. Burgess
    • Rhonda M. Stroud
    ResearchOpen Access
    Communications Earth & Environment
    Volume: 5, P: 1-8

  • Hydrogen species are identified within vesicles of both hydrous apatite and nominally anhydrous merrillite in lunar soil grains from the Apollo missions, and show associations with both the space weathered rim of grains and heat sources such as melt blebs

    • Katherine D. Burgess
    • Brittany A. Cymes
    • Rhonda M. Stroud
    ResearchOpen Access
    Communications Earth & Environment
    Volume: 4, P: 1-8

  • Thermoelectric materials convert heat into electricity and their performance is determined by their figure of merit ZT, which is generally too small in many materials for practical applications. Here, the authors demonstrate that a reduction in grain size for nanocrystalline Si can reduce thermal conductivity and potentially be used as a method to engineer greater ZT in Si for thermoelectric applications.

    • Battogtokh Jugdersuren
    • Brian T. Kearney
    • Xiao Liu
    ResearchOpen Access
    Communications Physics
    Volume: 4, P: 1-10