Tootfinder

Active Learning and Explainable AI for Multi-Objective Optimization of Spin Coated Polymers
Brendan Young, Brendan Alvey, Andreas Werbrouck, Will Murphy, James Keller, Mattias J. Young, Matthew Maschmann
https://arxiv.org/abs/2509.08988

Active Learning and Explainable AI for Multi-Objective Optimization of Spin Coated Polymers
Spin coating polymer thin films to achieve specific mechanical properties is inherently a multi-objective optimization problem. We present a framework that integrates an active Pareto front learning algorithm (PyePAL) with visualization and explainable AI techniques to optimize processing parameters. PyePAL uses Gaussian process models to predict objective values (hardness and elasticity) from the design variables (spin speed, dilution, and polymer mixture), guiding the adaptive selection of sa…

Geometry-Dependent Adhesion in Transparent, Monodomain Liquid Crystal Elastomers
Aidan Street, Devesh Mistry, Johan Mattsson, Helen F. Gleeson
https://arxiv.org/abs/2507.07639

Geometry-Dependent Adhesion in Transparent, Monodomain Liquid Crystal Elastomers
Elastomeric pressure-sensitive adhesives (PSAs) form adhesive bonds under light pressure. Liquid crystal elastomers (LCEs) are exciting PSA candidates as they can impart both anisotropy and temperature-dependence to adhesion, but the full potential of their anisotropic adhesion is unexplored. Here, identical side-chain LCEs, produced as transparent isotropic or nematic films are investigated; the latter aligned in homeotropic or planar geometries. Their room-temperature adhesion, determined thr…

Car culture at its absolute worst meets an unjust legal system. Parents lose a son and are then convicted of a felony because they let him walk across the street. Gift link https://www.nytimes.com/2025/08/06/opinion

Opinion | They Let Their Children Cross the Street and Now They’re Felons
They went to jail when their boy was killed. Why don’t road planners bear some guilt?

The problem of infinite Spin for parabolic and collision solutions in the planar $n$-body problem
Zhe Wang, Guowei Yu
https://arxiv.org/abs/2507.05801 http…

The problem of infinite Spin for parabolic and collision solutions in the planar $n$-body problem
In the planar $n$-body problem, the problem of infinite spin occurs for both parabolic and collision solutions. Recently Moeckel and Montgomery \cite{MM25} showed that there is no infinite spin for total collision solutions. Following their approach, we show it can not happen for both complete and partially parabolic solutions. Our approach also allows us to generalize Moeckel and Montgomery's result to partial collision solutions.

Asymptotic behavior of the least energy solutions to the Choquard equation in dimension two
Jinkai Gao, Xinfu Li, Shiwang Ma
https://arxiv.org/abs/2508.02139 https://

Asymptotic behavior of the least energy solutions to the Choquard equation in dimension two
In this paper, we are interested in the following planar Choquard equation \begin{equation*} \begin{cases} -Δu=\displaystyle\left(\int\limits_Ω\frac{u^{p+1}(y)}{|x-y|^α}dy\right)u^{p},\quad u>0,\ \ &\mbox{in}\ Ω, \quad \ \ u=0, \ \ &\mbox{on}\ \partial Ω, \end{cases} \end{equation*} where $Ω$ is a smooth bounded domain in $\mathbb{R}^2$, $α\in (0,2)$ and $p>1$ is a positive parameter. Unlike the higher-dimensional case, we prove that the least energy solutions $u_{p}$ n…

Arcs with increasing chords in $\mathbf{R}^d$
Adrian Dumitrescu, Zsolt L\'angi
https://arxiv.org/abs/2509.01580 https://arxiv.org/pdf/2509.01580…

Arcs with increasing chords in $\mathbf{R}^d$
A curve $γ$ that connects $s$ and $t$ has the increasing chord property if $|bc| \leq |ad|$ whenever $a,b,c,d$ lie in that order on $γ$. For planar curves, the length of such a curve is known to be at most $2π/3 \cdot |st|$. Here we examine the question in higher dimensions and from the algorithmic standpoint and show the following: (I) The length of any $s-t$ curve with increasing chords in $\mathbf{R}^d$ is at most $2 \cdot \left( e/2 \cdot (d+4) \right)^{d-…

Tailored Thermal and Mechanical Performance of Biodegradable PLA-P(VDF-TrFE) Polymer Blends
G Suresh, B. Satyanarayana, C. Thirmal, Kaushal Jagarlamudi, T Komala, Jimlee Patowary, Ashutosh Kumar
https://arxiv.org/abs/2508.04662

Tailored Thermal and Mechanical Performance of Biodegradable PLA-P(VDF-TrFE) Polymer Blends
The development of polymer blends has emerged as a strategic approach for designing multifunctional materials with enhanced tailored characteristics. Current work investigates and reports for the first time, the structure-property relationships in free-standing blend films of poly(vinylidene fluoride-trifluoroethylene) (P(VDF-TrFE)) and polylactic acid (PLA), prepared to evaluate their suitability for functional applications. For this investigation, films of approximately 40 $μ$m thick were fa…

Edge-On Disk Study (EODS) II: Thermal Structure of the Flying Saucer Disk
S. Guilloteau (Univ. Bordeaux, CNRS, Laboratoire d'Astrophysique de Bordeaux), O. Denis-Alpizar (Departamento de F\'isica, Facultad de Ciencias, Universidad de Chile, Av. Las Palmeras 3425, Nu\~noa, Santiago, Chile), A. Dutrey (Univ. Bordeaux, CNRS, Laboratoire d'Astrophysique de Bordeaux), C. Foucher (Univ. Bordeaux, CNRS, Laboratoire d'Astrophysique de Bordeaux), S. Gavino (Dipartimento di Fisic…

Edge-On Disk Study (EODS) II: Thermal Structure of the Flying Saucer Disk
Context. The dust and gas temperature in proto-planetary disks play critical roles in determining their chemical evolution and influencing planet formation processes. Aims. We attempted an accurate measurement of the dust and CO temperature profile in the edge-on disk of the Flying Saucer. Methods. We used the unique properties of the Flying Saucer, its edge-on geometry and its fortunate position in front of CO clouds with different brightness temperatures to provide independent constraints on …

Nonlinear planar Hall effect from superconducting vortex motion
Mio Hashimoto, Takako Konoike, Tomoki Kobayashi, Shintaro Hoshino, Takuya Kawada, Tomoyuki Yokouchi, Shinya Uji, Atsutaka Maeda, Yuki Shiomi
https://arxiv.org/abs/2509.06313

Nonlinear planar Hall effect from superconducting vortex motion
We report the nonreciprocal charge transport along the longitudinal and transverse directions in the vortex flow regime of FeSe superconducting films. Clear nonreciprocal signals under an inplane magnetic field reveals symmetry breaking at the film surfaces since the crystal structure of FeSe is centrosymmetric. Although the symmetry in such polar superconductors allows the nonreciprocal transverse response under a magnetic field parallel to the electric current, its observation is physically c…

Car culture at its absolute worst meets an unjust legal system. Parents lose a son and are then convicted of a felony because they let him walk across the street. Gift link https://www.nytimes.com/2025/08/06/opinion

Opinion | They Let Their Children Cross the Street and Now They’re Felons
They went to jail when their boy was killed. Why don’t road planners bear some guilt?