Tootfinder

Non-linear estimators for the observation and stabilisation of falling liquid films
Oscar Holroyd, Radu Cimpeanu, Susana N. Gomes
https://arxiv.org/abs/2506.16987

Non-linear estimators for the observation and stabilisation of falling liquid films
Falling liquid films are complex physical processes modelled by infinite-dimensional dynamical systems. The interfacial behaviour is characterised by the Reynolds number, a nondimensional parameter, and above a critical value the uniform film becomes unstable and travelling waves occur. By injecting and removing fluid from the base at discrete locations, we aim to stabilise otherwise unstable flat interfaces, with the additional limitation that observations of the state are restricted to finite…

Role of hydrogen dynamics and deposition conditions in photochromic YHO/MoO$_3$ bilayer films
Edvards Strods, Martins Zubkins, Viktors Vibornijs, Dmitrii Moldarev, Anatolijs Sarakovskis, Karlis Kundzins, Emija Letko, Daniel Primetzhofer, Juris Purans
https://arxiv.org/abs/2506.16946

Role of hydrogen dynamics and deposition conditions in photochromic YHO/MoO$_3$ bilayer films
Oxygen-containing yttrium hydride (YHO) and molybdenum trioxide (MoO$_3$) bilayer films (YHO/MoO$_3$) are produced using reactive magnetron sputtering, and their photochromic properties are investigated in relation to the thickness and density of the MoO$_3$ layer. Compared to single YHO films, the YHO/MoO$_3$ films exhibit faster coloration and larger contrast, with both parameters adjustable by varying the thickness or deposition pressure of the MoO$_3$ layer. Transparent YHO/MoO$_3$ films (~…

Full-Gap Superconductivity in BaAs/Ferropnictide Heterostructures
Ming-Qiang Ren, Qiang-Jun Cheng, Hui-Hui He, Ze-Xian Deng, Fang-Jun Cheng, Yong-Wei Wang, Cong-Cong Lou, Qinghua Zhang, Lin Gu, Kai Liu, Xu-Cun Ma, Qi-Kun Xue, Can-Li Song
https://arxiv.org/abs/2506.16276

Full-Gap Superconductivity in BaAs/Ferropnictide Heterostructures
Interfacial interactions often promote the emergence of unusual phenomena in two-dimensional systems, including high-temperature superconductivity. Here, we report the observation of full-gap superconductivity with a maximal spectroscopic temperature up to 26 K in a BaAs monolayer grown on ferropnictide Ba(Fe$_{1-x}$Co$_x$)$_2$As$_2$ (abbreviated as BFCA) epitaxial films. The superconducting gap remains robust even when the thickness of underlying BFCA is reduced to the monolayer limit, in cont…

Mixed phases in a Fermi--Hubbard model describing altermagnetism
E. Langmann, J. Lenells
https://arxiv.org/abs/2506.16503 https://arx…

Mixed phases in a Fermi--Hubbard model describing altermagnetism
We study an extension of the 2D Fermi--Hubbard model, which was recently introduced in [Das et al., Phys. Rev. Lett. 132, 263402 (2024)] and shown to describe altermagnetism that can be studied in cold atom systems. Using an updated Hartree--Fock method that can detect instabilities towards phase separation, we show that the model is in a mixed phase in large parts of the parameter regime at half-filling. We argue that the occurrence of a mixed phase is an indication of exotic physics which, in…

Congratulations to Professor Braxton Shelley of YDS and the ISM! He has been appointed to the newly endowed George Washington Williams Chair, named for the first African American to graduate from Newton Theological Institution (which continues today as part of Andover Newton Seminary at YDS).
Read about Prof. Shelley's appointment and other YDS faculty accomplishments here.

If you set limits for a scale (e.g. x-axis) in ggplot, how would you like data outside of that range be handled? There is the oob parameter for that and a set of functions to use with it: https://scales.r-lib.org/reference/oob.html

Simulation of parametrized cardiac electrophysiology in three dimensions using physics-informed neural networks
Roshan Antony Gomez, Julien St\"ocker, Bar{\i}\c{s} Cans{\i}z, Michael Kaliske
https://arxiv.org/abs/2506.15405

Simulation of parametrized cardiac electrophysiology in three dimensions using physics-informed neural networks
Physics-informed neural networks (PINNs) are extensively used to represent various physical systems across multiple scientific domains. The same can be said for cardiac electrophysiology, wherein fully-connected neural networks (FCNNs) have been employed to predict the evolution of an action potential in a 2D space following the two-parameter phenomenological Aliev-Panfilov (AP) model. In this paper, the training behaviour of PINNs is investigated to determine optimal hyperparameters to predict…

Sources: Scale AI plans to promote Chief Strategy Officer Jason Droege to CEO, replacing Alexandr Wang, who is set to join Meta after its investment in Scale AI (Shirin Ghaffary/Bloomberg)
https://www.bloomberg.com/news/articles/20

Scale AI Picks New CEO as Alexandr Wang Set to Join Meta After Investment
Scale AI plans to promote Chief Strategy Officer Jason Droege to serve as its next chief executive officer following a multibillion-dollar investment from Meta Platforms Inc., according to two people familiar with the matter.

Accretion of Dark Energy Candidates Following Redshift Parametrization Type Equation of State : Horava-Lifshitz Gravity
Promila Biswas, Sukanya Dutta, Ritabrata Biswas, Farook Rahaman
https://arxiv.org/abs/2506.11173

Accretion of Dark Energy Candidates Following Redshift Parametrization Type Equation of State : Horava-Lifshitz Gravity
In this article, accretion of particular dark energy candidates is studied. These dark energy models possess equation of state dependent on redshift and some free parameters. Central gravitating object for this accretion model is chosen to be the Kehagias Sfetsos black hole sitting in Horava Gravity. Four special redshift parametrization models, viz. Chevallier-Polarski-Linder, Jassal-Bagala-Padmanabhan, Barboza-Alcaniz and Barboza-Alcaniz-Zhu-Silva are picked to study different accretion prope…

Nice to see Michael Hansmeyer still following his dreams: The White Tower was finally revealed 2 weeks ago, currently the largest 3D printed structure in the world (30 meters [90ft] tall), located in a small village in Switzerland:
https://www.michael-hansmeyer.com/white-tower

Tor Alva | White Tower - Project Overview
Tor Alva, White Tower, Weisser Turm in Mulegns, Switzerland, Origen Foundation