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At least 289 records · Page 16
All sourcesNASA NTRSDOE OSTI
DOE OSTI2020

Materials Data on NpAl4 by Materials Project

NpAl4 crystallizes in the orthorhombic Imma space group. The structure is three-dimensional. Np is bonded in a 11-coordinate geometry to thirteen Al atoms. There are a spread of Np–Al bond distances ranging from 3.03–3.13 Å. There are three inequivalent Al sites. In the first Al site, Al is bonded in a 10-coordinate geometry to three equivalent Np and seven Al atoms. There are a spread of Al–Al bond distances ranging from 2.62–2.95 Å. In the second Al site, Al is bonded to four equivalent Np and eight Al atoms to form a mixture of distorted face, edge, and corner-sharing AlNp4Al8 cuboctahedra. There are two shorter (3.07 Å) and four longer (3.12 Å) Al–Al bond lengths. In the third Al site, Al is bonded in a 3-coordinate geometry to three equivalent Np and ten Al atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Np2InNi2 by Materials Project

Np2Ni2In crystallizes in the tetragonal P4/mbm space group. The structure is three-dimensional. Np is bonded in a 6-coordinate geometry to six equivalent Ni and four equivalent In atoms. There are two shorter (2.77 Å) and four longer (2.86 Å) Np–Ni bond lengths. All Np–In bond lengths are 3.27 Å. Ni is bonded in a 9-coordinate geometry to six equivalent Np, one Ni, and two equivalent In atoms. The Ni–Ni bond length is 2.63 Å. Both Ni–In bond lengths are 2.90 Å. In is bonded to eight equivalent Np and four equivalent Ni atoms to form a mixture of corner and face-sharing InNp8Ni4 cuboctahedra.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Np2Si4Tc3 by Materials Project

Np2Tc3Si4 crystallizes in the monoclinic P2_1/c space group. The structure is three-dimensional. Np+3.50+ is bonded in a 2-coordinate geometry to two equivalent Tc+2.33- and two equivalent Si atoms. There are one shorter (2.93 Å) and one longer (2.96 Å) Np–Tc bond lengths. There are one shorter (2.92 Å) and one longer (2.94 Å) Np–Si bond lengths. There are two inequivalent Tc+2.33- sites. In the first Tc+2.33- site, Tc+2.33- is bonded in a 7-coordinate geometry to two equivalent Np+3.50+ and five Si atoms. There are a spread of Tc–Si bond distances ranging from 2.44–2.50 Å. In the second Tc+2.33- site, Tc+2.33- is bonded in a 12-coordinate geometry to six Si atoms. There are four shorter (2.51 Å) and two longer (2.56 Å) Tc–Si bond lengths. There are two inequivalent Si sites. In the first Si site, Si is bonded in a 6-coordinate geometry to two equivalent Np+3.50+ and four Tc+2.33- atoms. In the second Si site, Si is bonded in a 4-coordinate geometry to four Tc+2.33- atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Cs7Np3(Cl2O)6 by Materials Project

Cs7Np3(OCl2)6 crystallizes in the cubic I-43d space group. The structure is three-dimensional. there are two inequivalent Cs1+ sites. In the first Cs1+ site, Cs1+ is bonded in a 3-coordinate geometry to three equivalent O2- and six equivalent Cl1- atoms. All Cs–O bond lengths are 3.24 Å. There are three shorter (3.79 Å) and three longer (3.88 Å) Cs–Cl bond lengths. In the second Cs1+ site, Cs1+ is bonded to eight equivalent Cl1- atoms to form distorted corner-sharing CsCl8 hexagonal bipyramids. There are four shorter (3.61 Å) and four longer (3.64 Å) Cs–Cl bond lengths. Np+5.67+ is bonded in a distorted linear geometry to two equivalent O2- and four equivalent Cl1- atoms. Both Np–O bond lengths are 1.81 Å. All Np–Cl bond lengths are 2.70 Å. O2- is bonded in a distorted single-bond geometry to two equivalent Cs1+ and one Np+5.67+ atom. Cl1- is bonded in a 1-coordinate geometry to four Cs1+ and one Np+5.67+ atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on NpNiSn by Materials Project

NpNiSn crystallizes in the orthorhombic Pnma space group. The structure is three-dimensional. Np is bonded in a 1-coordinate geometry to six equivalent Ni and six equivalent Sn atoms. There are a spread of Np–Ni bond distances ranging from 2.82–3.38 Å. There are a spread of Np–Sn bond distances ranging from 3.15–3.21 Å. Ni is bonded in a 10-coordinate geometry to six equivalent Np and four equivalent Sn atoms. There are a spread of Ni–Sn bond distances ranging from 2.58–2.71 Å. Sn is bonded in a 10-coordinate geometry to six equivalent Np and four equivalent Ni atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on NpGa5Ni by Materials Project

NpNiGa5 crystallizes in the tetragonal P4/mmm space group. The structure is three-dimensional. Np is bonded to twelve Ga atoms to form NpGa12 cuboctahedra that share corners with four equivalent NpGa12 cuboctahedra, faces with four equivalent NpGa12 cuboctahedra, and faces with four equivalent GaNp4Ga8 cuboctahedra. There are eight shorter (2.99 Å) and four longer (3.00 Å) Np–Ga bond lengths. Ni is bonded in a body-centered cubic geometry to eight Ga atoms. All Ni–Ga bond lengths are 2.51 Å. There are three inequivalent Ga sites. In the first Ga site, Ga is bonded in a 4-coordinate geometry to two equivalent Np, two equivalent Ni, and seven Ga atoms. There are a spread of Ga–Ga bond distances ranging from 2.66–3.00 Å. In the second Ga site, Ga is bonded in a 4-coordinate geometry to two equivalent Np, two equivalent Ni, and seven Ga atoms. There are two shorter (2.99 Å) and four longer (3.00 Å) Ga–Ga bond lengths. In the third Ga site, Ga is bonded to four equivalent Np and eight Ga atoms to form distorted GaNp4Ga8 cuboctahedra that share corners with four equivalent GaNp4Ga8 cuboctahedra, faces with four equivalent NpGa12 cuboctahedra, and faces with four equivalent GaNp4Ga8 cuboctahedra.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Np2InPd2 by Materials Project

Np2Pd2In crystallizes in the tetragonal P4/mbm space group. The structure is three-dimensional. Np is bonded in a 6-coordinate geometry to six equivalent Pd and four equivalent In atoms. There are two shorter (2.87 Å) and four longer (3.02 Å) Np–Pd bond lengths. All Np–In bond lengths are 3.42 Å. Pd is bonded in a 9-coordinate geometry to six equivalent Np, one Pd, and two equivalent In atoms. The Pd–Pd bond length is 2.82 Å. Both Pd–In bond lengths are 3.01 Å. In is bonded to eight equivalent Np and four equivalent Pd atoms to form a mixture of face and corner-sharing InNp8Pd4 cuboctahedra.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on NpGa4 by Materials Project

NpGa4 crystallizes in the orthorhombic Imma space group. The structure is three-dimensional. Np is bonded in a 9-coordinate geometry to thirteen Ga atoms. There are a spread of Np–Ga bond distances ranging from 3.03–3.14 Å. There are three inequivalent Ga sites. In the first Ga site, Ga is bonded in a 10-coordinate geometry to three equivalent Np and seven Ga atoms. There are a spread of Ga–Ga bond distances ranging from 2.61–3.05 Å. In the second Ga site, Ga is bonded in a 12-coordinate geometry to four equivalent Np and eight Ga atoms. There are four shorter (3.06 Å) and two longer (3.14 Å) Ga–Ga bond lengths. In the third Ga site, Ga is bonded in a 3-coordinate geometry to three equivalent Np and ten Ga atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Na3NpO10 by Materials Project

Na3NpO10 crystallizes in the triclinic P-1 space group. The structure is three-dimensional. there are two inequivalent Na sites. In the first Na site, Na is bonded to six O atoms to form NaO6 octahedra that share corners with four equivalent NpO6 octahedra. The corner-sharing octahedra tilt angles range from 26–61°. There are a spread of Na–O bond distances ranging from 2.28–2.67 Å. In the second Na site, Na is bonded in a 2-coordinate geometry to six O atoms. There are a spread of Na–O bond distances ranging from 2.32–2.91 Å. Np is bonded to six O atoms to form NpO6 octahedra that share corners with four equivalent NaO6 octahedra. The corner-sharing octahedra tilt angles range from 26–61°. There are a spread of Np–O bond distances ranging from 1.88–2.45 Å. There are five inequivalent O sites. In the first O site, O is bonded in a distorted trigonal planar geometry to one Na, one Np, and one O atom. The O–O bond length is 1.41 Å. In the second O site, O is bonded in a distorted bent 150 degrees geometry to two Na and one Np atom. In the third O site, O is bonded in a trigonal non-coplanar geometry to two Na and one Np atom. In the fourth O site, O is bonded in a distorted T-shaped geometry to two equivalent Na and one O atom. The O–O bond length is 1.34 Å. In the fifth O site, O is bonded in a see-saw-like geometry to two Na and two O atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on BaSr2Np by Materials Project

BaSr2Np crystallizes in the cubic F-43m space group. The structure is three-dimensional. Ba is bonded in a distorted body-centered cubic geometry to four equivalent Sr and four equivalent Np atoms. All Ba–Sr bond lengths are 3.99 Å. All Ba–Np bond lengths are 3.99 Å. There are two inequivalent Sr sites. In the first Sr site, Sr is bonded in a distorted body-centered cubic geometry to four equivalent Ba and four equivalent Sr atoms. All Sr–Sr bond lengths are 3.99 Å. In the second Sr site, Sr is bonded to four equivalent Sr and four equivalent Np atoms to form distorted edge-sharing SrSr4Np4 tetrahedra. All Sr–Np bond lengths are 3.99 Å. Np is bonded in a body-centered cubic geometry to four equivalent Ba and four equivalent Sr atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Na3NpO8 by Materials Project

Na3NpO8 crystallizes in the monoclinic P2_1/c space group. The structure is three-dimensional. there are two inequivalent Na sites. In the first Na site, Na is bonded in a 8-coordinate geometry to eight O atoms. There are a spread of Na–O bond distances ranging from 2.40–2.83 Å. In the second Na site, Na is bonded in a 7-coordinate geometry to seven O atoms. There are a spread of Na–O bond distances ranging from 2.33–2.88 Å. Np is bonded in a distorted octahedral geometry to six O atoms. There are a spread of Np–O bond distances ranging from 1.90–2.44 Å. There are four inequivalent O sites. In the first O site, O is bonded in a distorted see-saw-like geometry to two Na, one Np, and one O atom. The O–O bond length is 1.35 Å. In the second O site, O is bonded to three Na and one Np atom to form a mixture of distorted edge and corner-sharing ONa3Np trigonal pyramids. In the third O site, O is bonded in a distorted rectangular see-saw-like geometry to three Na and one Np atom. In the fourth O site, O is bonded in a 4-coordinate geometry to three Na and one O atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Np2I2O by Materials Project

Np2OI2 is Cyanogen Chloride-like structured and crystallizes in the tetragonal P4/mmm space group. The structure is zero-dimensional and consists of one Np2OI2 cluster. Np is bonded in a distorted linear geometry to one O and one I atom. The Np–O bond length is 2.06 Å. The Np–I bond length is 2.89 Å. O is bonded in a linear geometry to two equivalent Np atoms. I is bonded in a single-bond geometry to one Np atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Np2Re3Si5 by Materials Project

Np2Re3Si5 crystallizes in the tetragonal P4/mnc space group. The structure is three-dimensional. Np+3.50+ is bonded in a 9-coordinate geometry to nine Si4- atoms. There are a spread of Np–Si bond distances ranging from 2.89–3.22 Å. There are two inequivalent Re+4.33+ sites. In the first Re+4.33+ site, Re+4.33+ is bonded to six Si4- atoms to form a mixture of distorted edge, face, and corner-sharing ReSi6 octahedra. The corner-sharing octahedral tilt angles are 48°. There are a spread of Re–Si bond distances ranging from 2.46–2.54 Å. In the second Re+4.33+ site, Re+4.33+ is bonded in a distorted hexagonal planar geometry to six Si4- atoms. There are four shorter (2.48 Å) and two longer (2.72 Å) Re–Si bond lengths. There are three inequivalent Si4- sites. In the first Si4- site, Si4- is bonded in a 9-coordinate geometry to three equivalent Np+3.50+, four Re+4.33+, and two equivalent Si4- atoms. Both Si–Si bond lengths are 2.61 Å. In the second Si4- site, Si4- is bonded in a 11-coordinate geometry to four equivalent Np+3.50+, three Re+4.33+, and four Si4- atoms. Both Si–Si bond lengths are 2.75 Å. In the third Si4- site, Si4- is bonded in a 9-coordinate geometry to four equivalent Np+3.50+, four equivalent Re+4.33+, and one Si4- atom. The Si–Si bond length is 2.53 Å.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Na3Np by Materials Project

Na3Np is beta Cu3Ti-like structured and crystallizes in the hexagonal P6_3/mmc space group. The structure is three-dimensional. there are two inequivalent Na sites. In the first Na site, Na is bonded to eight Na and four equivalent Np atoms to form distorted NaNa8Np4 cuboctahedra that share corners with four equivalent NpNa12 cuboctahedra, corners with fourteen NaNa8Np4 cuboctahedra, edges with six equivalent NpNa12 cuboctahedra, edges with twelve NaNa8Np4 cuboctahedra, faces with four equivalent NpNa12 cuboctahedra, and faces with sixteen NaNa8Np4 cuboctahedra. There are a spread of Na–Na bond distances ranging from 3.53–3.83 Å. All Na–Np bond lengths are 3.68 Å. In the second Na site, Na is bonded to eight Na and four equivalent Np atoms to form distorted NaNa8Np4 cuboctahedra that share corners with four equivalent NpNa12 cuboctahedra, corners with fourteen NaNa8Np4 cuboctahedra, edges with six equivalent NpNa12 cuboctahedra, edges with twelve NaNa8Np4 cuboctahedra, faces with four equivalent NpNa12 cuboctahedra, and faces with sixteen NaNa8Np4 cuboctahedra. Both Na–Na bond lengths are 3.58 Å. All Na–Np bond lengths are 3.68 Å. Np is bonded to twelve Na atoms to form NpNa12 cuboctahedra that share corners with six equivalent NpNa12 cuboctahedra, corners with twelve NaNa8Np4 cuboctahedra, edges with eighteen NaNa8Np4 cuboctahedra, faces with eight equivalent NpNa12 cuboctahedra, and faces with twelve NaNa8Np4 cuboctahedra.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on NpSbPd2 by Materials Project

NpPd2Sb is Heusler structured and crystallizes in the cubic Fm-3m space group. The structure is three-dimensional. Np is bonded in a body-centered cubic geometry to eight equivalent Pd and six equivalent Sb atoms. All Np–Pd bond lengths are 2.93 Å. All Np–Sb bond lengths are 3.39 Å. Pd is bonded in a body-centered cubic geometry to four equivalent Np and four equivalent Sb atoms. All Pd–Sb bond lengths are 2.93 Å. Sb is bonded in a distorted body-centered cubic geometry to six equivalent Np and eight equivalent Pd atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Mg16NpAl12 by Materials Project

Mg16NpAl12 crystallizes in the cubic I-43m space group. The structure is three-dimensional. there are two inequivalent Mg sites. In the first Mg site, Mg is bonded in a 10-coordinate geometry to three equivalent Mg, one Np, and six equivalent Al atoms. All Mg–Mg bond lengths are 3.04 Å. The Mg–Np bond length is 3.24 Å. All Mg–Al bond lengths are 3.13 Å. In the second Mg site, Mg is bonded in a 12-coordinate geometry to seven Mg and five equivalent Al atoms. There are two shorter (3.07 Å) and four longer (3.15 Å) Mg–Mg bond lengths. There are a spread of Mg–Al bond distances ranging from 2.87–3.19 Å. Np is bonded in a 12-coordinate geometry to four equivalent Mg and twelve equivalent Al atoms. All Np–Al bond lengths are 3.16 Å. Al is bonded in a 11-coordinate geometry to seven Mg, one Np, and three equivalent Al atoms. There are one shorter (2.66 Å) and two longer (2.73 Å) Al–Al bond lengths.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Pu3Np by Materials Project

Pu3Np is alpha La-derived structured and crystallizes in the tetragonal I4/mmm space group. The structure is three-dimensional. there are two inequivalent Pu sites. In the first Pu site, Pu is bonded to eight Pu and four equivalent Np atoms to form PuPu8Np4 cuboctahedra that share corners with twelve equivalent PuPu8Np4 cuboctahedra, edges with eight equivalent NpPu12 cuboctahedra, edges with sixteen PuPu8Np4 cuboctahedra, faces with four equivalent NpPu12 cuboctahedra, and faces with fourteen PuPu8Np4 cuboctahedra. There are four shorter (3.18 Å) and four longer (3.20 Å) Pu–Pu bond lengths. All Pu–Np bond lengths are 3.18 Å. In the second Pu site, Pu is bonded to eight equivalent Pu and four equivalent Np atoms to form PuPu8Np4 cuboctahedra that share corners with four equivalent PuPu8Np4 cuboctahedra, corners with eight equivalent NpPu12 cuboctahedra, edges with twenty-four PuPu8Np4 cuboctahedra, faces with six equivalent NpPu12 cuboctahedra, and faces with twelve PuPu8Np4 cuboctahedra. All Pu–Np bond lengths are 3.20 Å. Np is bonded to twelve Pu atoms to form NpPu12 cuboctahedra that share corners with four equivalent NpPu12 cuboctahedra, corners with eight equivalent PuPu8Np4 cuboctahedra, edges with eight equivalent NpPu12 cuboctahedra, edges with sixteen equivalent PuPu8Np4 cuboctahedra, faces with four equivalent NpPu12 cuboctahedra, and faces with fourteen PuPu8Np4 cuboctahedra.

36 MATERIALS SCIENCE↗
DOE OSTI2023

Using Aggregation to Chaperone Nanoparticles Across Fluid Interfaces

Abstract Nanoparticles (NPs) transfer is usually induced by adding ligands to modify NP surfaces, but aggregation of NPs oftentimes hampers the transfer. Here, we show that aggregation during NP phase transfer does not necessarily result in transfer failure. Using a model system comprising gold NPs and amphiphilic polymers, we demonstrate an unusual mechanism by which NPs can undergo phase transfer from the aqueous phase to the organic phase via a single‐aggregation‐single pathway. Our discovery challenges the conventional idea that aggregation inhibits NP transfer and provides an unexpected pathway for transferring larger‐sized NPs (>20 nm). The charged amphiphilic polymers effectively act as chaperons for the NP transfer and offer a unique way to manipulate the dispersion and distribution of NPs in two immiscible liquids. Moreover, by intentionally jamming the NP‐polymer assembly at the liquid/liquid interface, the transfer process can be inhibited.

Fu, Yuchen↗