Tootfinder

A fire will be lit in Galway this September as
Misleór Festival of Nomadic Cultures returns for its seventh annual gathering.
It celebrates and brings together nomadic voices from Traveller, Roma, Sšmi, Inuit, and other indigenous communities in a crossroads of cultures.
https://…

Misleór Festival of Nomadic Cultures will light a fire in Galway this month - This is Galway
A fire will be lit in Galway this September as Misleór Festival of Nomadic Cultures returns for its seventh annual gathering. Find out more about the festival programme here...

Nondegenerate hyperplane covers of the hypercube
Lisa Sauermann, Zixuan Xu
https://arxiv.org/abs/2507.00773 https://arxiv.org/pdf/250…

Nondegenerate hyperplane covers of the hypercube
We consider collections of hyperplanes in $\mathbb{R}^n$ covering all vertices of the $n$-dimensional hypercube $\{0,1\}^n$, which satisfy the following nondegeneracy condition: For every $v\in \{0,1\}^n$ and every $i=1,\dots,n$, we demand that there is a hyperplane $H$ in the collection with $v\in H$ such that the variable $x_i$ appears with a non-zero coefficient in the hyperplane equation describing $H$. We prove that every collection $\mathcal{H}$ of hyperplanes in $\mathbb{R}^n$ covering $…

Self-propulsive active nematics
Niels de Graaf Sousa, Simon Guldager Andersen, Aleksandra Arda\v{s}eva, Amin Doostmohammadi
https://arxiv.org/abs/2509.02386 https://

Self-propulsive active nematics
Increasing evidence suggests that active matter exhibits instances of mixed symmetry that cannot be fully described by either polar or nematic formalism. Here, we introduce a minimal model that integrates self-propulsion into the active nematic framework. Our linear stability analyses reveal how self-propulsion shifts the onset of instability, fundamentally altering the dynamical landscape. Numerical simulations confirm these predictions, showing that self-propulsion induces anti-hyperuniform f…

🇺🇦 #NowPlaying on KEXP's #AfternoonShow
Joe Walsh:
🎵 A Life of Illusion
#JoeWalsh
https://nomadstones.bandcamp.com/track/life-of-illusion
https://open.spotify.com/track/19P4fwkPhE6yVAXApFWDoF

Die #dem25 ist vorbei und wir blicken sukzessiv auf die Top 3 der einzelnen Altersklassen. Wir gratulieren:
🥇 Neil Albrecht (7/9)
🥈 Alfred Nemitz (6,5/9)
🥉 Stepan Mohylnyi (6,5/9)
Alle Partien und Ergebnisse der U14 sind hier zu finden: http…

Signatures of three-state Potts nematicity in spin excitations of the van der Waals antiferromagnet FePSe$_3$
Weiliang Yao, Viviane Pe\c{c}anha Antonio, Devashibhai Adroja, S. J. Gomez Alvarado, Bin Gao, Sijie Xu, Ruixian Liu, Xingye Lu, Pengcheng Dai
https://arxiv.org/abs/2509.02475

Signatures of three-state Potts nematicity in spin excitations of the van der Waals antiferromagnet FePSe$_3$
In two-dimensional (2D) nearly square-lattice quantum materials, electron correlations can induce an electronic nematic phase with twofold rotational ($C_2$) symmetry that profoundly impacts their properties. For 2D materials with threefold rotational ($C_3$) symmetry, such as the honeycomb lattice, a vestigial three-state Potts nematic order has been observed in the van der Waals antiferromagnet (AFM) FePSe$_3$ via optical and thermodynamic methods under uniaxial strain. Here, we use neutron s…

Active sorting to boundaries in active nematic -- passive isotropic fluid mixtures
Saraswat Bhattacharyya, Julia M. Yeomans
https://arxiv.org/abs/2509.01523 https://

Active sorting to boundaries in active nematic -- passive isotropic fluid mixtures
We use a two-fluid model to study a confined mixture of an active nematic fluid and a passive isotropic fluid. We find that an extensile active fluid preferentially accumulates at a boundary if the anchoring is planar, whereas its boundary concentration decreases for homeotropic anchoring. These tendencies are reversed if the active fluid is contractile. We argue that the sorting results from gradients in the nematic order, and show that the behaviour can be driven by either imposed boundary an…

An 11,000-year-old settlement in Canada is challenging the idea that early Indigenous people were nomadic.
The newly uncovered village site of Âsowanânihk, which means "a place to cross" in the Cree language,
is one of the oldest archaeological sites found on the continent
and suggests that an organized society existed in central Canada far earlier than experts previously thought.

11,000-year-old settlement in Canada could rewrite history of Indigenous civilizations in North America
The discovery of an 11,000-year-old village in Saskatchewan could rewrite Indigenous history in central Canada.

Fully-chromophoric ferroelectric nematics for electronic electro-optics
Xi Chen (Department of Physics, University of Colorado Boulder, CO, USA), Andrew Bradfield (Department of Physics, University of Colorado Boulder, CO, USA), Chirag Patel (Polaris Electro-Optics, Inc., Broomfield, CO, USA), Pavel Savechenkov (Polaris Electro-Optics, Inc., Broomfield, CO, USA), Jason W. Sickler (Polaris Electro-Optics, Inc., Broomfield, CO, USA), Gianlorenzo Masini (Polaris Electro-Optics, Inc., Broo…

Fully-chromophoric ferroelectric nematics for electronic electro-optics
Electronic electro-optic (EEO) phase modulation is a key emerging technology for the chip-scale inter-conversion of signals between the electronic and photonic domains. The recent discovery of the ferroelectric nematic ($N_F$) liquid crystal phase, a three dimensional fluid of rod-shaped organic molecules having near-perfect equilibrium polar molecular orientational order, offers attractive opportunities for the creation of second-order nonlinear optical materials for EEO. Here we propose and r…

Landau-de Gennes Modelling of Confinement Effects and Cybotactic Clusters in Bent-Core Nematic Liquid Crystals
Yucen Han, Prabakaran Rajamanickam, Bedour Alturki, Apala Majumdar
https://arxiv.org/abs/2509.00334

Landau-de Gennes Modelling of Confinement Effects and Cybotactic Clusters in Bent-Core Nematic Liquid Crystals
We study bent-core nematic (BCN) systems in two-dimensional (2D) and three-dimensional (3D) settings, focusing on the role of cybotactic clusters, phase transitions, confinement effects and applied external fields. We propose a generalised version of Madhusudhana's two-state model for BCNs in [Madhusudana NV, Physical Review E, 96(2), 022710] with two order parameters: $\mathbf{Q}_g$ to describe the ambient ground-state (GS) molecules and $\mathbf{Q}_c$ to describe the ordering within the cybot…