Tootfinder

Spreading droplets of yield-stress fluids with and without gravity
Linnea Heitmeier, Olfa D'Angelo, Maziyar Jalaal, Thomas Voigtmann
https://arxiv.org/abs/2507.04379

Spreading droplets of yield-stress fluids with and without gravity
We investigate the effect of gravity on the spreading of droplets of yield stress fluids, by performing both microgravity experiments (in a drop tower) and experiments under terrestrial gravity. We investigate the dependence of the final droplet shape on yield stress and gravity. Droplets are deposited on a thin film of the same material, allowing to directly test scaling laws derived from the thin-film equation for viscoplastic fluids. Microgravity conditions allow to vary independently the tw…

Samsung unveils the $1,100 Galaxy Z Flip 7 with a 4.1-inch external and 6.9-inch internal display, 13.7mm body, a more durable folding hinge, and more (Mariella Moon/Engadget)
https://www.engadget.com/mobile/sma…

Samsung's Galaxy Z Flip 7 has a bigger battery and is still thinner than last year's model
Samsung has launched the Galaxy Z Flip 7, along with the Z Flip 7 FE and the Z Fold 7, during its latest Unpacked event.

Spin properties in droplet epitaxy-grown telecom quantum dots
Marius Cizauskas, Elisa M. Sala, Jon Heffernan, A. Mark Fox, Manfred Bayer, Alex Greilich
https://arxiv.org/abs/2507.06058

Spin properties in droplet epitaxy-grown telecom quantum dots
We investigate the spin properties of InAs/InGaAs/InP quantum dots grown by metalorganic vapor-phase epitaxy (MOVPE) deposition using droplet epitaxy, which emit in the telecom C-band. Using pump-probe Faraday ellipticity measurements, we determine electron and hole $g$-factors of $|g_e| = 0.934$ and $|g_h| = 0.471$, with the electron $g$-factor being nearly twice as low as typical molecular beam epitaxy Stranski-Krastanov (SK) grown samples. Most significantly, we measure a…

Oscillation-Induced Frequency Generation in 1D Quantum Droplets under Harmonic-Gaussian Confinements
Jagnyaseni Jogania, Saurab Das, Ajay Nath, Jayanta Bera
https://arxiv.org/abs/2507.05902

Oscillation-Induced Frequency Generation in 1D Quantum Droplets under Harmonic-Gaussian Confinements
We explore the dynamical behavior of one-dimensional quantum droplets (QDs) governed by the extended Gross-Pitaevskii equation, under harmonic confinement supplemented by a static or time-dependent Gaussian spike (Gs) potential. Employing both variational analytical techniques and numerical simulations, we investigate the evolution of the root-mean-square (RMS) size, excitation spectrum, and phase-space dynamics of QDs. Our study reveals that while the harmonic trap sets the primary confinement…

Enhancing Swarms Durability to Threats via Graph Signal Processing and GNN-based Generative Modeling
Jonathan Karin, Zoe Piran, Mor Nitzan
https://arxiv.org/abs/2507.03039

Enhancing Swarms Durability to Threats via Graph Signal Processing and GNN-based Generative Modeling
Swarms, such as schools of fish or drone formations, are prevalent in both natural and engineered systems. While previous works have focused on the social interactions within swarms, the role of external perturbations--such as environmental changes, predators, or communication breakdowns--in affecting swarm stability is not fully understood. Our study addresses this gap by modeling swarms as graphs and applying graph signal processing techniques to analyze perturbations as signals on these grap…

💦 How to suspend one liquid inside another: Programmable droplets show potential for carbon capture
https://phys.org/news/2025-06-liquid-programmable-droplets-potential-carbon.html

How to suspend one liquid inside another: Programmable droplets show potential for carbon capture
Researchers led by a team at the University of Waterloo have developed a way to create tiny droplets of one liquid inside another liquid without mixing the two together.

On the detection of medium inhomogeneity by contrast agent: wave scattering models and numerical implementations
Zhe Wang, Ahcene Ghandriche, Jijun Liu
https://arxiv.org/abs/2507.05773

On the detection of medium inhomogeneity by contrast agent: wave scattering models and numerical implementations
We consider the wave scattering and inverse scattering in an inhomogeneous medium embedded a homogeneous droplet with a small size, which is modeled by a constant mass density and a small bulk modulus. Based on the Lippmann-Schwinger integral equation for scattering wave in inhomogeneous medium, we firstly develop an efficient approximate scheme for computing the scattered wave as well as its far-field pattern for any droplet located in the inhomogeneous background medium. By establishing the a…

Excellent papier.
https://www.lemonde.fr/idees/article/2025/06/05/la-concomitance-entre-le-reveil-de-l-ultradroite-et-une-croissance-durablement-atone-en-…

« La concomitance entre le réveil de l’ultradroite et une croissance durablement atone en Europe est frappante »
Dans sa chronique, Alain Frachon, éditorialiste au « Monde » tente d’expliquer pour quelles raisons les partis d’extrême droite gagnent du terrain à travers le continent, élection après élection.

What, exactly, constitutes a “conservative idea?”
That dictatorship is preferable to democracy?
That white Christian nationalism is better than tolerance and openness?
That social Darwinism is superior to human decency?
The claim that higher education must be more open to such “conservative ideas” is dangerous drivel.
So what’s the real, underlying reason for the Trump regime’s attack on education?
Not incidentally, that attack extends to grade school.

Deltog i OSSEs parlamentariska församling i Porto på inbjudan av ukrainska delegationen kring hybridkrigföring. Att lyssna till kollegor från frontlinjen i det kognitiva kriget gav skärpa. Systematisk rysk påverkan testas i Ukraina, används mot oss.
https://carlheath.se/re…