RIKEN

Pressure-Gated Ionic Contact in Multilayered Nanomeshes Enables Strain-Insensitive Pressure Sensing

Abstract Soft robotic grippers require tactile interfaces that selectively detect contact pressure at the object–gripper interface without strain-induced artifacts from gripper deformation. Here, we report an ultrathin pressure-gated ionic-contact (PGIC) sensor for multidirection...

Molecular Connectivity Controls Electronic Coupling and Charge-Transfer Dynamics at Anthracene–MoS2 Interfaces

Abstract Controlling interfacial charge-transfer (CT) interactions is a central challenge in two-dimensional (2D) organic–inorganic hybrid materials. Here, we show that molecular connectivity strongly governs excited-state evolution at a 2D heterointerface using anthracene (An) d...

Hour-scale response of low-Earth-orbit satellite altitude to extreme geomagnetic storms revealed by the NinjaSat CubeSat during the 2024 solar maximum

Abstract Extreme geomagnetic storms accelerate low-Earth-orbit satellite decay by inflating the thermosphere, yet the hour-scale pathway from solar-wind energy to atmospheric heating is poorly understood. Using the GNSS receiver of the NinjaSat CubeSat ( $$\sim 500$$ km, $$97^\ci...

Randomized Subspace Gradient Method for Constrained Optimization

We propose randomized subspace gradient methods for high-dimensional constrained optimization. Whereas there are related studies on unconstrained optimization problems, there are relatively few for constrained optimization problems because of the difficulty of handling constraint...

Nonmonotonic scaling of the anomalous Hall effect in a bicollinear antiferromagnet

An anomalous Hall effect (AHE) in antiferromagnetic (AF) systems without net magnetization is of considerable interest for fundamental physics and spintronic applications. Of particular interest is the two-dimensional van der Waals antiferromagnet iron telluride (FeTe), which has...

Data for "The QCD phase diagram for three-flavor Möbius domain-wall fermions"

This dataset contains the processed numerical data and plotting scripts underlying the figures in the article "The QCD phase diagram for three-flavor Möbius domain-wall fermions". Each directory corresponds to one or more figures in the paper. The gauge-field ensembles and raw me...

Bacterial expression of human small GTPases induces stochastic predatory responses and motility interference in Physarum polycephalum

We investigated the behavioral responses of the slime mold Physarum polycephalum to Escherichia coli expressing human small GTPases to elucidate how internalized proteins affect its actomyosin-based motility machinery. We found that prey bacteria expressing hKRAS WT or hRhoA trig...

Swarming by curvature control in arbitrary dimension

We consider an interacting particle system proposed in the literature to model fish behavior. In this model, the agents move at constant speed and control the curvature of their trajectory (i.e. the time-derivative of their velocity) so as to align their velocity with that of the...

Weak Ferromagnetism in NiS 2 under Nanocrystallization

Structurally well-ordered NiS 2 nanocrystals with an average diameter of 27.0 ± 6.5 nm retain the bulk-like two-step antiferromagnetic transitions, as shown by magnetization and heat-capacity measurements. Below the lower transition, the nanocrystals exhibit a hysteretic ferromag...

Strong coupling between RF photons and plasmons of electrons on liquid helium

Plasmons, arising from the collective motion of electrons, can interact strongly with electromagnetic fields or photons; this capability has been exploited across a broad range of applications, from chemical reactivity to biosensing. Recently, there has been growing interest in p...

Identification of a nanosecond isomer of $$^{164}$$Tb

Abstract This letter reports on the identification of a new isomeric state of $$^{164}$$ 164 Tb ( $$Z=65$$ Z = 65 , $$N=99$$ N = 99 ), which was measured with the DESPEC setup at the GSI Helmholtzzentrum für Schwerionenforschung GmbH following the first relativistic fragmentation...

GH172 Difructose Dianhydride I Synthase: A Two‐Stepped Journey via Glycosylation and Cyclization Using QM/MM Metadynamics

ABSTRACT The difructose dianhydride I synthase/hydrolase catalyzes the reversible transformation of inulobiose into difructose dianhydride I, a component of caramel. The proposed reaction mechanism of such a transformation consists of a glycosylation step followed by a cyclizatio...

Two stress-responsive kinases suppress ferroptosis by activating antioxidant programs under mild oxidative stress

Cancer cells maintain chronically elevated levels of reactive oxygen species (ROS) while relying on robust antioxidant programs to preserve redox homeostasis and viability. Although therapeutic strategies that disrupt this balance to induce lethal oxidative stress and ferroptosis...

Atomic-precision π-driven peptide hydrogel nanofibers with ordered water channels

Aromatic interactions organize molecules into ordered supramolecular architectures, while peptides form functional soft materials through hydrogen bonding and water-mediated assembly. In peptide-based systems, strong aromatic stacking is typically achieved by terminal capping, wh...