Publications

Sep, 2026

Journal

Toward Atomic-Scale Control over Structural Modulations in Quasi-1D Chalcogenides for Colossal Optical Anisotropy

Optically anisotropic materials are sought after for tailoring the polarization of light. Recently, colossal optical anisotropy (Δn = 2.1) was reported in a quasi-one-dimensional chalcogenide, Sr9/8TiS3. Compared to SrTiS3, the excess Sr in Sr9/8TiS3 leads to periodic structural modulations and introduces additional electrons, which undergo charge ordering on select Ti ato…

Sep, 2026

Journal

PySlice: Routine Vibrational Electron Energy-Loss Spectroscopy Prediction with Universal Interatomic Potentials

Vibrational spectroscopy in the electron microscope can reveal phonon excitations with sub-nanometer spatial resolution, yet routine prediction and interpretation remain challenging due to fragmented workflows requiring specialized expertise. Here we introduce PySlice, an open-source implementation of the Time Autocorrelation of Auxiliary Wavefunction (TACAW) method, provi…

Sep, 2026

Journal

Detecting Magnon-phonon coupling in yttrium iron garnet with variable temperature STEM-EELS

Magnons, quanta of spin wave excitations in magnetically ordered materials, have been identified as candidates for several potentially transformative technologies in recent years. Macroscopic techniques, such as neutron scattering or Raman spectroscopy, can be used to identify and analyze magnons, but provide relatively delocalized information about the sample. Understandi…

Sep, 2026

Journal

Universal Inert Gas Transfer System for Transmission Electron Microscopes

Aug, 2026

Journal

Having Your Beam/Environment-Sensitive Sample in the Microscope, and Applying Monochromated EELS to it Too

Aug, 2026

Journal

Mesoscale Magnetostructural Phase Separation in Fe-deficient Fe5GeTe2

2D Van der Waals ferromagnet Fe5-xGeTe2 (F5GT) is promising for spintronic applications due to its high Curie temperature, layered structure, and ability to host complex magnetic textures. However, the origin of its sample-dependent magnetic anisotropy remains unclear, hindering control of its magnetic behavior. Here, spatially resolved cryogenic scanning transmission elec…

Mar, 2026

Journal

Substrate-Directed Underlayer Growth of Bilayer MoS2 Revealed by Mo Isotope Labeling

Direct control over the vertical formation sequence and stacking registry in van der Waals (vdW) bilayers is essential for device performance and moiré engineering yet difficult to resolve unambiguously with conventional probes. We use Mo isotope labeling in a two-step chemical vapor deposition process to synthesize bilayer MoS2 and trace its vertical formation on common s…

Mar, 2026

Journal

Unveiling Swift Heavy Ion Track Morphology in Sr-Based High-Entropy Perovskites

The incorporation of multiple cations on a single lattice site in the high-entropy oxides is considered the key driving factor for modifying the known atomic-level response to energetic ion irradiation due to the presence of structural disorder; however, these effects are not well-understood yet. In this work, we present atomic-level insight into irradiation-induced nanosc…

Jan, 2026

Journal

Intermediate Bandgap (IB) Cu3VSxSe4−x Nanocrystals as a New Class of Light Absorbing Semiconductors

A new family of highly uniform, cubic-shaped Cu3VSxSe4-x (CVSSe; 0

Sep, 2025

Journal

An Impedance Humidity Sensor Based on CVD Grown WSe2 2D Films

2D materials-based planar devices have been sought after for gas and humidity sensor applications owing to their high sensitivity due to their ultrathin nature and increased surface area. Herein, 2D WSe2 films-based planner devices were fabricated to evaluate their performance for potential application in humidity sensors. The structure and morphology of the WSe2 sensing f…

Aug, 2025

Journal

Strain-Driven Stabilization of a Room-Temperature Chiral Multiferroic with Coupled Ferroaxial and Ferroelectric Order

Noncollinear ferroic materials are sought after as testbeds to explore the intimate connections between topology and symmetry, which result in electronic, optical, and magnetic functionalities not observed in collinear ferroic materials. For example, ferroaxial materials have rotational structural distortions that break mirror symmetry and induce chirality. When ferroaxial…

Aug, 2025

Journal

Spatially Precise Light-Activated Dedoping in Wafer-Scale MoS2 Films

2D materials, particularly transition metal dichalcogenides (TMDCs), have shown great potential for microelectronics and optoelectronics. However, a major challenge in commercializing these materials is the inability to control their doping at a wafer scale with high spatial fidelity. Interface chemistry is used with the underlying substrate oxide and concomitant exposure…