Research works

Circular dichroism in second- and third-harmonic generation in the chiral topological semimetal CoSi

We theoretically investigate circular dichroism (CD) in second- and third-harmonic generation (SHG and THG) in the chiral topological semimetal CoSi. We demonstrate that both SHG and THG exhibit dichroic responses of order unity, while their robustness against spectral broadening...

Guest-Induced Chirality Transfer in Trimers of Invertible Cylinder-Shaped Macrocycles

Abstract Transfer of chiral information is abundant in biological processes. To mimic them in artificial systems, chiral macrocyclic molecules are particularly promising components for their simplicity and easy-to-predict intermolecular interactions. Herein, we report a chirality...

What are pulsar companions made of? Using gravitational tides to probe their compositions

Low eccentricity, short orbital period pulsar companions may provide a probe to study novel dense and stable exoplanet internal compositions due to the potentially significant orbital evolution they experience caused by strong gravitational tides. We model the tidal characteristi...

Numerical calculations of neutron star mountains supported by crustal lattice pressure

Abstract Gravitational waves may set the spin frequencies of neutron stars in low-mass X-ray binaries (LMXBs). One mechanism for facilitating such emission is the formation of a mass asymmetry - or ‘mountain’ - supported by elastic strains driven by thermal gradients. Most studie...

On a relationship between grain boundary free energy, grain boundary segregation, and grain boundary diffusion

We present a detailed analysis of the universal relationship between grain boundary (GB) free energy and GB self-diffusion coefficient derived by Borisov et al. (1964). This relationship was expressed by a simple equation that was used in many publications to predict GB energies...

Full flexibility of the Monge-Ampère system in codimension d∗ − d + 1

We prove that $\mathcal{C}^{1,α}$ solutions to the Monge-Ampère system in dimension $d$ and codimension $k= d_*-d+1$, where $d_*$ denotes the Janet dimension, are dense in the space of continuous functions, for every Hölder exponent $α<1$. Our result strengthens the statement in...

Sampling Weights at Intermediate Temperatures is Optimal for Training Large Language Protein Models

Using a statistical mechanics framework, we investigate the parameter space of transformer models trained on protein sequence data. We sample the loss landscape at varying temperatures using Langevin dynamics to characterize the low-loss manifold and to understand the mechanisms...

AI-ready design of realistic 2D materials and interfaces with Mat3ra-2D

Artificial intelligence (AI) and machine learning (ML) models in materials science are predominantly trained on ideal bulk crystals, limiting their transferability to real-world applications where surfaces, interfaces, and defects dominate. We present Mat3ra-2D, an open-source fr...

The network structure of the urban revolution

Long-distance interaction has deep prehistoric roots, but the networks that emerged during the Urban Revolution were unprecedented in scale and organization. How early cities sustained this extensive connectivity in the absence of formal markets or centralized states remains a fu...

Conducting a Dissertation by Implication: Showing Up as Relational Method in Community-Engaged Arts-Based Research

Developing arts-based research that integrates community members making and testimony requires finding willing and eager participants. While existing scholarship in community-based art education emphasizes the need for ethical engagement with participants and communities, it ofte...

Mapping the limits of equilibrium in sheared granular liquid crystals

Athermal elongated particles are well-known to follow Jeffery orbits when sheared in viscous fluids. It is less clear if similar orbits appear in dense granular flows. We show that when sheared for long enough, sufficiently elongated frictionless granular rods, rather than follow...

Nonlinear Electro‐Optic Visible Photonic Circuits for Solid‐State Quantum Defects

Integrated visible photonic engines for solid-state quantum defects provide a foundation for scalable quantum networks. While miniaturization is advancing, active manipulation remains limited by the difficulty of achieving simultaneous milliwatt-scale visible light generation and...

Evidence accumulation models of Navon interference

The Navon task is a classic paradigm for studying selective attention, in which participants identify target letters presented at either a local or global level within compound figures. Traditionally, differences in reaction time (RT) between local and global trials—so-called pre...

Atmospheric CO 2 and CH 4 measurements at Schauinsland station, Germany: a comparative study of diurnal and seasonal variations at 12 and 35 m intake height

Abstract. At the atmospheric monitoring station Schauinsland (Black Forest, Germany), high-precision long-term measurements of atmospheric CO2 and CH4 have been conducted since 1972 and 1991, respectively. An additional air intake at 35 m a.g.l. (above ground level) has been inst...

FoMo: A multi-season dataset for robot navigation in Forêt Montmorency

The Forêt Montmorency (FoMo) dataset is a comprehensive multi-season data collection, recorded over the span of 1 year in a boreal forest. Featuring a unique combination of on- and off-pavement environments with significant environmental changes, the dataset challenges establishe...

Protocol for a cluster randomized controlled trial among young people and their peers to reduce substance use and inequitable gender beliefs in Southern Africa

BACKGROUND AND AIMS: Substance use and the internalization of traditional gender norms, or inequitable gender beliefs, are co-occurring risk behaviors for poorer health and well-being in young people in Southern Africa. Addressing the social and structural factors that reinforce...

Six Birds for Navier-Stokes: A Mechanized No-Zeno Scaffold

Energy estimates for the three-dimensional incompressible Navier–Stokes equations bound the kinetic energy, but they do not stop velocity gradients from concentrating in ever smaller regions. This is why the classical regularity criteria, such as Beale–Kato–Majda, ask for control...

Ice-ray pentagonal packing of pseudo-fivefold helices

While fivefold point symmetry is common in nature, fivefold spatial symmetry is seldom observed. Regular pentagons cannot tile a plane without leaving voids, and even the densest “ice-ray” packing is exceptionally rare. Fivefold helices are equally elusive. We report a small mole...

The dual effect of urban areas on supercell storms

Abstract. The effect of urban land use on convective storms with deep and persistent rotating updrafts (supercell storms) is systematically investigated using ensembles of idealized numerical simulations. A supercell is simulated over a flat domain containing a circular city surr...

Dissecting Binary and Ternary Iminoboronate Assemblies: A Calorimetric Study of Thermodynamics, Kinetics, and Allosteric Effects

Abstract Dynamic covalent assemblies derived from ortho-boronoaldehydes, including iminoboronates and boronate esters, are key structural motifs in adaptive materials, chemical sensors, and reversible bioconjugation strategies. Herein, we report a label-free assay based on isothe...