3 papers
cond-mat.soft2026
Auxetic behaviour in crystals of hard polyhedra
Rinske M. Alkemade, Silvana A. Caipa Cure, AlptuÄ Ulugöl +8
Auxetic materials - systems that, when subjected to a compression in one direction, also compress in one or more perpendicular directions - have intrigued researchers for decades d…
cond-mat.soft2026
Vacancy defects in square-triangle tilings and their implications for quasicrystals formed by square-shoulder particles
AlptuÄ Ulugöl, Giovanni Del Monte, Eline K. Kempkes +2
Almost all observed square-triangle quasicrystals in soft-matter systems contain a large number of point-like defects, yet the role these defects play in stabilizing the quasicryst…
cond-mat.soft2025
Defects Enhance Stability in 12-fold Symmetric Soft-Matter Quasicrystals
AlptuÄ Ulugöl, Robert J. Hardeman, Frank Smallenburg +1
Quasicrystals are materials that exhibit long-range order without translational periodicity. In soft matter, the most commonly observed quasicrystal has 12-fold symmetry and consis…