Explanipedia

Controlling Fatigue Cracks in the Transmission Electron Microscope Open

Andrew J. Baker, Kyle R. Dorman, Khalid Hattar, Stephen D. House, Brad Boyce · 2025

Fatigue cracking in materials is a widespread engineering challenge with substantial economic and safety consequences. In situ Transmission Electron Microscopy (TEM) is an emerging method to investigate the nanoscale origins of fatigue. Re…

Influence of irradiation damage on stress-assisted grain growth in ultrafine grained Au thin films using in situ transmission electron microscopy mechanical testing Open

Lina Daza-Llanos, Sandra Stangebye, Eric Lang, Khalid Hattar, Olivier Pierron , et al. · 2025

Point Defects in MoNbTi-Based Refractory Multi-Principal-Element Alloys Open

Thai hang Chung, Maciej Oskar Liedke, S. Ayyappan, Maik Butterling, Raymond C. Ferguson , et al. · 2025

As emergent material candidates for extreme environments, refractory high-entropy alloys (HEAs) or refractory multi-principal-element alloys (RMPEAs) comprising refractory metals feature qualities such as high radiation tolerance, corrosio…

Unraveling fundamental mechanisms of silicon nitride crystallization in microelectronics manufacturing Open

Chris Bishop, Tesia D. Janicki, Edwin Chiu, Elizabeth A. Davis, Calvin Parkin , et al. · 2025

Nucleation rate controlled grain boundary and lattice creep Open

D. Coffman, Joshua T. White, Jordan Brown, Dawei Zhang, Adrien J. Terricabras , et al. · 2025

Tiny Bubbles: Combined HR(S)TEM and 4D-STEM Analysis of Sub-Nanometer He Bubbles in Au Open

Sean H. Mills, Christoph Gammer, Alex T.L. Lin, Aaron A. Kohnert, Claire Chisholm , et al. · 2025

Irradiation produces a distribution of defect sizes in materials, with the smallest defects often below one nanometer in size and approaching the scale of a single unit cell in metals. While high-resolution scanning transmission electron m…

Ruddlesden-Popper chalcogenides push the limit of mechanical stiffness and glass-like thermal conductivity in single crystals Open

Md Shafkat Bin Hoque, Eric R. Hoglund, Boyang Zhao, De‐Liang Bao, Hao Zhou , et al. · 2025

Insulating materials featuring ultralow thermal conductivity for diverse applications also require robust mechanical properties. Conventional thinking, however, which correlates strong bonding with high atomic-vibration-mediated heat condu…

In situ observation of irradiation-induced enhancement to the desorption pressure of zirconium hydride in a nuclear reactor Open

D. Robinson, Ryan Hood, N. J. Peters, Robert Kolasinski, John Brockman , et al. · 2025

Diffusion coefficients predicting facet-dependent crystallization in amorphous silicon nitride Open

Tesia D. Janicki, Jason Gibson, Carlos Chacon, Edwin Chiu, Khalid Hattar , et al. · 2025

Amorphous silicon nitride is a common material in microelectronics devices, which acts as an insulating barrier. Extended annealing times at elevated temperature can initiate crystallization of α-Si₃⁢ N₄, which does n…

Structural properties and recrystallization effects in ion beam modified B20-type FeGe films Open

J. Ping Liu, Ryan Schoell, Xiyue S. Zhang, Hongbin Yang, M. B. Venuti , et al. · 2025

Disordered iron germanium (FeGe) has recently garnered interest as a testbed for a variety of magnetic phenomena as well as for use in magnetic memory and logic applications. This is partially owing to its ability to host skyrmions and ant…

In Situ Observation of Enhancement to the Desorption Pressure of Zirconium Hydride in a Nuclear Reactor Open

D. Robinson, Ryan Hood, N. J. Peters, Robert Kolasinski, John Brockman , et al. · 2025

Improving radiation tolerance with room temperature annealing of pre-existing defects Open

Md Hafijur Rahman, Felix Cooper, Miguel L. Crespillo, Khalid Hattar, Aman Haque , et al. · 2025

Pre-existing defects in semiconductor devices can act as nucleation sites for radiation damage. Defects generated from mismatches in lattice constant, stiffness and thermal expansion are difficult to eliminate with thermal annealing. We pr…

Influence of Irradiation Damage on Stress-Assisted Grain Growth in Ultrafine Grained AU Thin Films Using in Situ Transmission Electron Microscopy Mechanical Testing Open

Lina Daza-Llanos, Sandra Stangebye, Eric Lang, Khalid Hattar, Olivier Pierron , et al. · 2025

Revealing the Evolution of Order in Materials Microstructures Using Multi-Modal Computer Vision Open

Arman Ter-Petrosyan, Michael Holden, Jenna A. Bilbrey, Sarah Akers, Christina Doty , et al. · 2024

The development of high-performance materials for microelectronics, energy storage, and extreme environments depends on our ability to describe and direct property-defining microstructural order. Our present understanding is typically deri…

Creep and failure at metal-oxide interfaces Open

Shen J. Dillon, Ryan Schoell, Andrew Wright, Jian Luo, Eugen Rabkin , et al. · 2024

The Isotopic Limit of Recycling Open

Eric J. Lang, Khalid Hattar · 2024

Despite advances in recycling technologies and practices, the world still mostly operates on a once-through materials use cycle. The once-through approach to the materials supply chain cannot work into perpetuity. The vast majority of curr…

Laterally Modulating Carrier Concentration by Ion Irradiation in CdO Thin Films for Mid‐IR Plasmonics Open

Angela Cleri, Mingze He, Maxwell J. Tolchin, Christopher R. Gubbin, Eric Lang , et al. · 2024

This report demonstrates tunable carrier densities in CdO thin films through local ion irradiation, providing lateral control of mid‐IR optical properties. Ion‐solid interactions produce donor‐like defects that boost electron concentration…

Dynamic Deformation in Nuclear Graphite and Underlying Mechanisms Open

Melonie P. Thomas, Hajin Oh, Ryan Schoell, Stephen D. House, Miguel L. Crespillo , et al. · 2024

Time-dependent deformation in nuclear graphite is influenced by the creation and migration of radiation-induced defects in the reactor environment. This study investigates the role of pre-existing defects such as point defect clusters and …

Structural Properties and Recrystallization Effects in Ion Beam Modified B20-type FeGe Films Open

J. Ping Liu, Ryan Schoell, Xiyue S. Zhang, Hongbin Yang, M. B. Venuti , et al. · 2024

Disordered iron germanium (FeGe) has recently garnered interest as a testbed for a variety of magnetic phenomena as well as for use in magnetic memory and logic applications. This is partially owing to its ability to host skyrmions and ant…

Interfacially Enhanced Superconductivity in Fe(Te,Se)/Bi4Te3 Heterostructures (Adv. Mater. 31/2024) Open

An‐Hsi Chen, Qiangsheng Lu, Eitan Hershkovitz, Miguel L. Crespillo, Alessandro R. Mazza , et al. · 2024

Quantum Materials Integrating topological materials and high temperature superconductors is critical for new applications. However, merging materials at atomically sharp interfaces presents distinct materials challenges. In article 2401809…

Triple Junction Segregation Dominates the Stability of Nanocrystalline Alloys Open

Annie K. Barnett, Omar Hussein, Maher B. Alghalayini, Alejandro Hinojos, James E. Nathaniel , et al. · 2024

We present large-scale atomistic simulations that reveal triple junction (TJ) segregation in Pt-Au nanocrystalline alloys in agreement with experimental observations. While existing studies suggest grain boundary solute segregation as a ro…

Probing phonon focusing, thermomechanical behavior, and moiré patterns in van der Waals architectures using surface acoustic waves Open

Nitish Baradwaj, Anikeya Aditya, Ankit Mishra, Kory Burns, Eric Lang , et al. · 2024

Using in situ UO 2 bicrystal sintering to understand grain boundary dislocation nucleation kinetics and creep Open

Shen J. Dillon, Sarah Finkeldei, Eric Lang, Khalid Hattar, Andrew Nelson · 2024

Capillary evolution at bicrystal UO 2 grain boundaries is characterized using in situ transmission electron microscopy. The discontinuous nature of the densification process, both particle rotation and axial strain, along with the large ac…

The radiation instability of thermally stable nanocrystalline platinum gold Open

Ryan Schoell, Christopher M. Barr, Douglas L. Medlin, David P. Adams, Yasir Mahmood , et al. · 2024

Inducing a tunable skyrmion-antiskyrmion system through ion beam modification of FeGe films Open

M. B. Venuti, Xiyue S. Zhang, Eric Lang, Sadhvikas Addamane, Hanjong Paik , et al. · 2024

Compositionally complex carbide ceramics: A perspective on irradiation damage Open

Lanh Trinh, Fei Wang, Kaustubh Bawane, Khalid Hattar, Zilong Hua , et al. · 2024

Extensive experimental and computational studies have demonstrated outstanding physical and chemical properties of the novel materials of compositionally complex carbides (CCCs), enabling their promising applications in advanced fission an…

Interfacially Enhanced Superconductivity in Fe(Te,Se)/Bi4Te3 Heterostructures Open

An‐Hsi Chen, Qiangsheng Lu, Eitan Hershkovitz, Miguel L. Crespillo, Alessandro R. Mazza , et al. · 2024

Realizing topological superconductivity by integrating high‐transition‐temperature ( T C ) superconductors with topological insulators can open new paths for quantum computing applications. Here, a new approach is reported for increasing t…

Influence of electrical field on the susceptibility of gallium nitride transistors to proton irradiation Open

Md Abu Jafar Rasel, Ryan Schoell, Christopher M. Smyth, Khalid Hattar, Charles Thomas Harris , et al. · 2024

Radiation susceptibility of electronic devices is commonly studied as a function of radiation energetics and device physics. Often overlooked is the presence or magnitude of the electrical field, which we hypothesize to play an influential…

Grain boundary metastability controls irradiation resistance in nanocrystalline metals Open

Osman El‐Atwani, Annie K. Barnett, Enrique Martínez, Jian Han, Asher C. Leff , et al. · 2024

Grain boundaries (GBs) in polycrystalline materials are powerful sinks for irradiation defects. While standard theories assume that the sink efficiency of a grain boundary is defined solely by its character before irradiation, recent evide…

Ion irradiation induced crystalline disorder accelerates interfacial phonon conversion and reduces thermal boundary resistance Open

Thomas W. Pfeifer, Henry T. Aller, Eric R. Hoglund, Ethan A. Scott, John A. Tomko , et al. · 2024

Traditional understanding of the thermal boundary resistance (TBR) across solid-solid interfaces posits that the vibrational densities of states overlap between materials dictates interfacial energy transport, with phonon scattering occurr…

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