Conference Agenda

Overview and details of the sessions of this conference. Please select a date or location to show only sessions at that day or location. Please select a single session for detailed view (with abstracts and downloads if available).

Please note that all times are shown in the time zone of the conference. The current conference time is: 1st Nov 2024, 12:47:20am CET

 
 
Session Overview
Session
MS-36: Generalizations of crystallographic groups and their applications
Time:
Tuesday, 17/Aug/2021:
10:20am - 12:45pm

Session Chair: Gregory L McColm
Session Chair: Eden Delight Miro
Location: 221-2

60 2nd floor

Invited:  Pavel Kalouguine (France), Martin Cramer Pedersen (Denmark)


Session Abstract

Space groups describe the global symmetry of a periodic structure. Generalizations of space groups are often necessary to investigate additional structural features, physical properties or aperiodic structures. These generalizations include superspace groups and chromatic groups (collectively called metacrystallographic groups), groups in non-Euclidean geometries and groupoids. Whereas superspace groups are now part of the daily work of the structural crystallographer, other generalizations are less well known. The microsymposium aims at reviewing these concepts and presenting new results in the field.

For all abstracts of the session as prepared for Acta Crystallographica see PDF in Introduction, or individual abstracts below.


Introduction
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Presentations
10:20am - 10:25am
ID: 1765 / MS-36: 1
Introduction
Oral/poster

Introduction to session

Gregory L McColm, Eden Delight Miro



10:25am - 10:55am
ID: 726 / MS-36: 2
Theory, computation, modelling, data, standards
Invited lecture to session
MS: Generalizations of crystallographic groups and their applications
Keywords: hyperbolic geometry, symmetry groups, chemical nets, graph embeddings, minimal surfaces

Behind the curve: Generating and analysing nets and tessellations on periodic minimalsurfaces in their universal covering space

Martin Cramer Pedersen1, Jacob J. K. Kirkensgaard1,2, Stephen T. Hyde3

1Niels Bohr Institute, University of Copenhagen; 2Department of Food Science, University of Copenhagen; 3School of Chemistry, University of Sydney

External Resource:
Video Link


10:55am - 11:25am
ID: 1203 / MS-36: 3
Physics and fundamental crystallography
Invited lecture to session
MS: Generalizations of crystallographic groups and their applications
Keywords: aperiodic solids, quasicrystals, matching rules, diffraction, density

Flat-branched semisimplicial complexes: a versatile tool for aperiodic solids

Pavel Kalugin1, André Katz2

1Laboratoire de Physique des Solides, Université Paris-Saclay, Orsay, France; 2Directeur de recherche honoraire, CNRS, France

External Resource:
Video Link


11:25am - 11:45am
ID: 354 / MS-36: 4
Bursary application
Oral/poster
MS: Generalizations of crystallographic groups and their applications
Keywords: local and global color symmetry, coordinated colorings, chromatic groups

Coordinated Colorings and their Chromatic Groups

Agatha Kristel M. Abila1, Eduard C. Taganap2, Ma. Louise Antonette N. De las Peñas3

1Southern Luzon State University - Lucena Campus, Lucena City, 4301, Philippines; 2Department of Mathematics and Physics, Central Luzon State University, Science City of Munoz, Nueva Ecija 3120, Philippines; 3Department of Mathematics, Ateneo de Manila University, Quezon City, Metro Manila 1108, Philippines

Bibliography
A.K.M. Abila, M.L.A.N. De Las Peñas, and E.C. Taganap. “Local and global color symmetries of a symmetrical pattern”, Acta Crystallographica Section A: Foundations and Advances 75(5).
External Resource:
Video Link


11:45am - 12:05pm
ID: 978 / MS-36: 5
Theory, computation, modelling, data, standards
Oral/poster
MS: Generalizations of crystallographic groups and their applications
Keywords: magnetic superspace group, superspace symmetry detection, incommensurate, isotropy subgroup

Advances in the application of magnetic and non-magnetic superspace-group symmetry

Branton J Campbell, Harold T Stokes

Brigham Young University, Physics & Astronomy, Provo, Utah, USA

External Resource:
Video Link


12:05pm - 12:25pm
ID: 1107 / MS-36: 6
Theory, computation, modelling, data, standards
Oral/poster
MS: Methods and software developments for magnetic-structure analysis, Generalizations of crystallographic groups and their applications, Crystal structure prediction
Keywords: symmetry, magnetic ordering, magnetic groups, neutron diffraction

Magnetic modes compatible with the symmetry of crystals

Radoslaw Przenioslo, Piotr Fabrykiewicz, Izabela Sosnowska

University of Warsaw, Warsaw, Poland

External Resource:
Video Link


 
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