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Showing 1 to 6 of 6 for “"Frank-Kasper"”.
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Self-assembly of Block Polymers: Self-Consistent Field Theory and Monte-Carlo Simulations
… low-symmetry structures, commonly referred to as Frank–Kasper phases, contain- ing particles of disparate sizes arranged in multiple coordination environments. The first problem of this thesis focuses on examining the stability of various Frank–Kasper phases in AB diblock copolymers. Using SCFT, …
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Phase behaviors of ABAC tetrablock terpolymers
… the simple hexagonal order (P6/mmm) and the Frank-Kasper σ-phase ( P /mnm 42 ) before the sample disorders, with THEX < TQC < Tσ < TODT. The TEM results reveal a QC morphology with a 12-fold rotational symmetry and the existence of the local dodecagonal quasicrystalline approximants that lack …
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Navigating the Intermetallic Landscape: From Quasicrystal Approximants to High Pressure Crystal Chemistry
… of compounds including Zintl-like structures, Frank-Kasper phases, interstitial Mn5Si3-type structures, classical Laves phases, and a decagonal quasicrystal approximant. Their formation and bonding is understood through comprehensive analysis of their electronic structure using density …
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Design of 3D Complex Nanostructures Using Block Copolymer Self-Assembly
… bulk-stable perforated lamella, unconventional Frank-Kasper A15 spheres, and hexagonally close-packed spheres, along with cylinder, gyroid, and lamellar morphologies attainable through a simple annealing step. Finally, taking a step beyond di-JBBCP, we introduce a third block to form a triblock …
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Thermodynamics of Micellar Lyotropic Liquid Crystals
… of tetrahedrally close-packed structures called Frank-Kasper (FK) phases, which possess ≥ 7 particles of two or more types situated at 12-, 14-, 15-, or 16-fold coordination environments in low-symmetry unit cells. Ubiquitous in intermetallic alloys, FK phases have been recapitulated in other …
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Strukturell komplexe intermetallische Phasen : Untersuchungen an binären und ternären Phasen der Systeme Ag-Mg und Ag-Ga-Mg
… Clatrath-IV-Topologie, die mit Ikosaedern und Frank-Kasper-Polyedern aus Ag und Ga gefüllt sind. Diese Phasen werden wahrscheinlich durch das e/a-Verhältnis der gesamten Struktur im Sinne einer Hume-Rothery-Regel stabilisiert.