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2018-03-05
11:59
[PUBDB-2018-01373] Journal Article
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An investigation on shear banding and crystallographic texture of Ag–Cu alloys deformed by high-pressure torsion
ddc:620
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2018-03-01
15:02
OpenAccess [PUBDB-2018-01352] Journal Article
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Picometer polar atomic displacements in strontium titanate determined by resonant X-ray diffraction
Physical properties of crystalline materials often manifest themselves as atomic displacements either away from symmetry positions or driven by external fields. Especially the origin of multiferroic or magnetoelectric effects may be hard to ascertain as the related displacements can reach the detection limit [...]
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ddc:500
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2018-01-22
12:32
OpenAccess [PUBDB-2018-00717] Journal Article
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Raman and fluorescence contributions to the resonant inelastic soft x-ray scattering on $LaAlO_{3}/SrTiO_3$ heterostructures
We present a detailed study of the Ti $3d$ carriers at the interface of $LaAlO_{3}/SrTiO_3$ heterostructures by high-resolution resonant inelastic soft x-ray scattering (RIXS), with special focus on the roles of overlayer thickness and oxygen vacancies. Our measurements show the existence of interfacial Ti $3d$ electrons already below the critical thickness for conductivity [...]
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ddc:530
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2018-01-12
11:04
[PUBDB-2018-00603] Journal Article
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Characterization of $\mathrm{A^{III}B^V}$ superlattices by means of synchrotron diffraction topography and high-resolution X-ray diffraction
New possibilities are presented for the characterization of A$^{III}$B$^V$ mixed superlattice compounds by the complementary use of synchrotron diffraction topography and rocking curves. In particular, using a synchrotron white beam and the section diffraction pattern of a 5 µm slit taken at a 10 cm film-to-crystal distance, it was possible to reproduce a set of stripes corresponding to interference fringes. [...]
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ddc:540
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2018-01-12
10:23
Embargoed OpenAccess [PUBDB-2018-00594] Journal Article
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Element-specific density profiles in interacting biomembrane models
Surface interactions involving biomembranes, such as cell–cell interactions or membrane contacts inside cells play important roles in numerous biological processes. Structural insight into the interacting surfaces is a prerequisite to understand the interaction characteristics as well as the underlying physical mechanisms. [...]
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ddc:530
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2018-01-11
17:09
[PUBDB-2018-00569] Journal Article
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pH-sensitive N,N-(dimethyl)-N-alkanamine-N-oxides as gene delivery vectors
Chemical papers 71(9), 1739 - 1748 (2017) [10.1007/s11696-017-0171-2]  GO
N,N-(Dimethyl)-N-alkanamine-N-oxides C$_n$NO (n = 12 and 16) are amphiphiles that exist in neutral as well as in cationic forms depending on pH of aqueous solutions. C$_n$NO with a neutral lipid DOPE (dioleoylphosphatidylethanolamine) can form liposomes with positive surface charge in acidic pH solution. [...]
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ddc:540
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2018-01-11
14:21
OpenAccess [PUBDB-2018-00512] Journal Article
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Picosecond amorphization of $\mathrm{SiO_{2}}$ stishovite under tension
Science advances 3(5), e1602339 - (2017) [10.1126/sciadv.1602339]  GO
It is extremely difficult to realize two conflicting properties—high hardness and toughness—in one material. Nano-polycrystalline stishovite, recently synthesized from Earth-abundant silica glass, proved to be a super-hard, ultra-tough material, which could provide sustainable supply of high-performance ceramics. [...]
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ddc:500
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2018-01-11
13:04
[PUBDB-2018-00477] Journal Article
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Evaluation of effects of crack deflection and grain bridging on toughening of nanocrystalline $\mathrm{SiO_{2}}$ stishovite
Nanocrystalline SiO$_{2}$ stishovite has a fracture toughness higher than 10 MPa m$^{1/2}$ due to the toughening mechanism by fracture-induced amorphization. In order to identify other toughening mechanisms which may operate simultaneously, we evaluated effect of crack deflection on fracture toughness. [...]
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ddc:660
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2018-01-10
13:24
[PUBDB-2018-00337] Journal Article
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Phase partitioning and uranium speciation in brannerite-based ceramics
Branneritecontaining ceramics were produced by cold pressing and sintering (CPS) and cold crucible inductive melting (CCIM) methods and examined by X-ray diffraction and absorption and by scanning electron microscopy. Brannerite content in the ceramics ranged between ∼20 and 90 vol.%. [...]
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2018-01-10
11:19
[PUBDB-2018-00323] Journal Article
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Structure and thermal expansion of $\mathrm{Ca_{9}Gd(VO_{4})_{7}}$: A combined powder-diffraction and dilatometric study of a Czochralski-grown crystal
Materials of the Ca$_9$RE(VO$_4$)$_7$ (CRVO) formula (RE = rare earth) and whitlockite-related structures are considered for applications in optoelectronics, e.g., in white-light emitting diodes and lasers. In the CRVO structure, the RE atoms are known to share the site occupation with Ca atoms at two or three among four Ca sites, with partial occupancy values depending on the choice of the RE atom. [...]
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