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Van der Waals forces can play unexpected role in thin film properties
Van der Waals forces can play unexpected role in thin film properties Lisa Lock Scientific Editor Andrew Zinin Lead Editor Researchers have demonstrated the ability to use van der Waals forces to tune the physical and electronic properties of ferroelectric thin films. The work opens the door to new techniques for engineering materials for use in smaller, more energy efficient electronic devices. "Epitaxy is when you deposit a crystalline layer of material on top of another crystalline layer...
Angler lands giant 2.5-metre catfish and breaks record
Paul had caught a 2.47-metre catfish and hoped to break his own record again soon. But his friend Mohammed unexpectedly beat him to it. In the Dutch town of Dodewaard on the River Waal, an angler has recently set a new record.
Record: angler lands giant 2.5-metre catfish
Paul had caught a 2.47-metre catfish and hoped to beat his own record soon, but his friend Mohammed unexpectedly got there first. In the Dutch town of Dodewaard on the River Waal, an angler has just set a new record. Mohammed Massaoudi was rewarded for his carefully organised hunt for the largest wels catfish in the Netherlands.
Strong coupling between coherent ferrons and cavity acoustic phonons
arXiv:2511.01201v2 Announce Type: replace-cross Abstract: Coherent ferrons, the quanta of polarization waves, can potentially be hybridized with many other quasiparticles for achieving novel control modalities in quantum communication, computing, and sensing. Here, we theoretically demonstrate a new hybridized state resulting from the strong coupling between fundamental-mode (wavenumber is zero) coherent ferrons and cavity bulk acoustic phonons. Using a van der Waals ferroelectric CuInP2S6...
Layer-Resolved Nonlinear Optics in Finite-Thickness Two-Dimensional Systems
arXiv:2606.02354v1 Announce Type: cross Abstract: Nonlinear optical (NLO) responses in two-dimensional quantum-confined systems are typically described within bulk-based frameworks as macroscopic spatial averages. In finite-thickness van der Waals multilayers directly relevant to nanoscale devices, this picture substantially breaks down. Here, we establish a general symmetry-based framework for classifying second-order NLO responses in multilayers.
Impact of Disorder Dynamics and Multi-Domain Kinetics on the Sliding Ferroelectricity of CVD-Grown 3R-WSe2 Bilayers
Announce Type: cross Abstract: Sliding ferroelectricity in van der Waals (vdW) layered systems has emerged as a promising route toward non-volatile nanoscale devices, where interlayer displacement in non-centrosymmetric bilayers generates an out-of-plane polarization. In particular, 3R-stacked bilayer transition metal dichalcogenides (TMDs) grown via chemical vapor deposition (CVD) have been shown to host such polarization due to broken inversion symmetry. However, a detailed investigation...
Two-component exciton condensates in an electron–hole bilayer
Abstract Macroscopic quantum coherence emerges when bosons condense into a Bose–Einstein condensate (BEC)1,2,3,4,5. Excitons are a long-sought solid-state route to high-temperature BECs with strong interactions, electrical tunability and potentially multicomponent spinor order, but conclusive evidence for equilibrium condensation has remained elusive. Here we report evidence for two-component exciton BECs in MoSe2/hBN/WSe2 electron–hole bilayers6,7,8,9 by probing the spin–valley...
Light-induced quantum friction of carbon nanotubes in water
Abstract Friction slows down moving objects at both macroscopic and microscopic scales1. At the electronic level, quantum friction describes direct transfer of momentum between a liquid and the electrons of a solid2. Owing to its microscopic nature, this phenomenon remains experimentally challenging to capture3.
Non-Additive Ion Effects on the Coil-Globule Equilibrium of a Generic Polymer in Aqueous Salt Solutions
Announce Type: replace-cross Abstract: Mixtures of weakly and strongly hydrated anions induce non-additive changes in the LCST of thermoresponsive polymers such as PNIPAM and PEO. Large-scale atomistic simulations of PNIPAM--NaI--Na$_{2}$SO$_{4}$ mixtures have shown that these effects arise from the interplay between favorable PNIPAM--iodide interactions and depletion of strongly hydrated sulfate ions. Here, we investigate whether chemically specific polymer--anion interactions are necessary...