Explanipedia

Beyond turbostratic disorder: Towards epitaxial alignment in van-der-Waals bilayer stacks grown from amorphous elemental precursors Open

Fabian Göhler, Fabian Ganss, Amerjan Osman, Olav Hellwig, David C. Johnson , et al. · 2025

Bottom-up synthetic approaches to synthesize stacks of individual quasi-two-dimensional materials remain a major experimental challenge. Here, we evaluate the applicability of the little-known technique of modulated elemental reactants (ME…

Synthesizing Amorphous Precursors Through Control of Local Composition Open

Hannah R. Blackwood, Annalise Walker, David C. Johnson · 2023

Synthesizing compounds predicted to have exceptional properties that are close to or below the ground state convex hull has proven to be very challenging, as avoiding the formation of more thermodynamically or kinetically stable mixtures o…

Evaluation of Lithium Metal Anode Volumetric Expansion through Laser Plasma Focused Ion Beam Cross-Sectional Imaging Open

Laura C. Merrill, Renae N. Gannon, Katherine Jungjohann, Steven Randolph, Subrahmanyam Goriparti , et al. · 2023

Lithium metal is an ideal anode for high energy density batteries, however the implementation of lithium metal anodes remains challenging. Beyond the development of highly efficient electrolytes, degradation processes restrict cycle life a…

Supplementary material from The Spectrum and Clinical Impact of Epigenetic Modifier Mutations in Myeloma Open

Charlotte Pawlyn, Martin Kaiser, Christoph Heuck, Lorenzo Melchor, Christopher P. Wardell , et al. · 2023

Supplementary Tables: Supplementary table 1: Demographics of the 463 patients included in the Myeloma XI analysis Supplementary table 2: List of epigenetic modifier genes used to interrogate the list of mutations in the Myeloma XI dataset …

Data from The Spectrum and Clinical Impact of Epigenetic Modifier Mutations in Myeloma Open

Charlotte Pawlyn, Martin Kaiser, Christoph Heuck, Lorenzo Melchor, Christopher P. Wardell , et al. · 2023

Purpose: Epigenetic dysregulation is known to be an important contributor to myeloma pathogenesis but, unlike other B-cell malignancies, the full spectrum of somatic mutations in epigenetic modifiers has not been reported previously…

Tuning metal/superconductor to insulator/superconductor coupling via control of proximity enhancement between NbSe2 monolayers Open

Olivio Chiatti, Klara Mihov, Theodor U Griffin, Corinna Grosse, Matti B. Alemayehu , et al. · 2023

The interplay between charge transfer and electronic disorder in transition-metal dichalcogenide multilayers gives rise to superconductive coupling driven by proximity enhancement, tunneling and superconducting fluctuations, of a yet unwie…

Targeted synthesis of predicted metastable compounds using modulated elemental reactants Open

Mellie Lemon, Fischer Harvel, Renae N. Gannon, Ping Lu, Sven P. Rudin , et al. · 2023

Three metastable compounds predicted to be kinetically stable using an “island” approach were successfully synthesized from designed modulated elemental reactants. Fe0.8V0.2Se2 was synthesized by depositing ultrathin elemental layers in a …

Method to Determine the Distribution of Substituted or Intercalated Ions in Transition-Metal Dichalcogenides: FexVSe2 and Fe1–xVxSe2 Open

Mellie Lemon, Renae N. Gannon, Ping Lu, Samuel Richard Battey, Sven P. Rudin , et al. · 2022

Multiple techniques are combined to determine the amount of intercalation and/or substitution in transition-metal dichalcogenides. Kiessig fringes in the X-ray reflectivity pattern are used to calculate thickness. Laue oscillations in the …

Identifying Limitations of the Lithium Metal Anode through Laser Plasma Focused Ion Beam Cross-Sectional Imaging. Open

Laura C. Merrill, Renae N. Gannon, Katherine Jungjohann, Steven Randolph, Subrahmanyam Goriparti , et al. · 2022

Growth of Crystallographically Aligned PbSe Films of Controlled Thickness on Amorphous Substrates Open

Renae N. Gannon, Marisa A. Choffel, Hannah R. Blackwood, Niklas Wolff, Andriy Lotnyk , et al. · 2022

Lead selenide (PbSe) has extensively been investigated due to its thermoelectric and photoconductive properties. More recently, predictions of emergent properties have focused synthetic efforts on preparing ultra‐smooth layers of crystallo…

Extracting information from X-ray diffraction patterns containing Laue oscillations Open

Aaron Miller, Mellie Lemon, Marisa A. Choffel, Sarah R. Rich, Fischer Harvel , et al. · 2022

The presence of Laue oscillations in a film grown on a solid surface is broadly taken as indicating a high quality, crystallographically aligned film of the targeted compound. In this paper we briefly review the origins of both Laue oscill…

Conductivity in Open-Framework Chalcogenides Tuned via Band Engineering and Redox Chemistry Open

Jacob McKenzie, Khoa N. Le, Dylan Bardgett, Kelsey A. Collins, Thomas Ericson , et al. · 2022

"Open-framework chalcogenides" are an important class of materials that combine porosity with semiconductor behavior, and yet fundamental aspects of their conductivity remain unexplored. Here, we report a combined experimental–computationa…

Challenges in synthesis of heterostructures Open

Aaron Miller, David C. Johnson · 2022

This article reviews synthetic approaches used to prepare heterostructures, outlining key steps, how experimental parameters are used to control reaction pathways, and challenges in controlling structure and composition at near-atomic scal…

Synthesis and Electrical Properties of a New Compound (BiSe)0.97(Bi2Se3)1.26(BiSe)0.97(MoSe2) Containing Metallic 1T-MoSe2 Open

Marisa A. Choffel, Renae N. Gannon, Fabian Göhler, Aaron Miller, Douglas L. Medlin , et al. · 2021

The synthesis and electrical properties of a new misfit compound containing BiSe, Bi₂Se₃, and MoSe₂ constituent layers are reported. The reaction pathway involves competition between the formation of (BiSe)…

Defects in Layered van der Waals Heterostructures: Implications for Thermoelectrics Open

Renae N. Gannon, Danielle M. Hamann, Jeffrey Ditto, Gavin Mitchson, Sage R. Bauers , et al. · 2021

Layered van der Waals heterostructures provide extraordinary opportunities for applications such as thermoelectrics and allow for tunability of optical and electronic properties. The performance of devices made from these heterostructures …

Predicting and Synthesizing Interface Stabilized 2D Layers Open

Danielle M. Hamann, Sven P. Rudin, Tomoya Asaba, F. Ronning, Dmitri Leo Mesoza Cordova , et al. · 2021

The compound (Pb₂MnSe₃)_0.6VSe₂ was predicted to be kinetically stable based on density functional theory (DFT) calculations on an island of Pb₂MnSe₃ between layers of VSe

Cryogenic Laser Ablation Reveals Short-Circuit Mechanism in Lithium Metal Batteries Open

Katherine Jungjohann, Renae N. Gannon, Subrahmanyam Goriparti, Steven Randolph, Laura C. Merrill , et al. · 2021

The dramatic 50% improvement in energy density that Li-metal anodes offer in comparison to graphite anodes in conventional lithium (Li)-ion batteries cannot be realized with current cell designs because of cell failure after a few cycles. …

UNDERSTANDING THE IMPACT OF OXYGEN CONCENTRATION AND ACTIVE PACKAGING ON CONTROLLING LIPID OXIDATION IN OIL-IN-WATER EMULSIONS Open

David C. Johnson · 2021

Estradiol, traditionally known as a hormone that communicates with distant cells in the body, is also synthesized locally in the brain to act as a neuromodulator. Neuromodulators differ from neurotransmitters in that they simultaneously af…

Understanding the Reactions Between Fe and Se Binary Diffusion Couples Open

Dylan Bardgett, Renae N. Gannon, Danielle M. Hamann, Dennice M. Roberts, Sage R. Bauers , et al. · 2021

Spurred by recent discoveries of high-temperature superconductivity in Fe-Se based materials, the magnetic, electronic, and catalytic properties of iron-chalcogenides have drawn significant attention. Furthermore, much remains to be unders…

Enhanced Low-Temperature Thermoelectric Performance in (PbSe)1+δ(VSe2)1 Heterostructures due to Highly Correlated Electrons in Charge Density Waves Open

Yu Wang, Danielle M. Hamann, Dmitri Leo Mesoza Cordova, Jihan Chen, Bo Wang , et al. · 2020

We explore the effect of charge density wave (CDW) on the in-plane thermoelectric transport properties of (PbSe)_1+δ(VSe₂)₁ and (PbSe)_1+δ(VSe₂)₂ heterostructures. In (PbSe)

Acceleration of Crystallization Kinetics in Ge‐Sb‐Te‐Based Phase‐Change Materials by Substitution of Ge by Sn Open

Peter Zalden, Christine Koch, Melf Paulsen, Marco Esters, David C. Johnson , et al. · 2020

Thin films of (Ge 1– x Sn x ) 8 Sb 2 Te 11 are prepared to study the impact of Sn‐substitution on properties relevant for application in phase‐change memory, a next‐generation electronic data storage technology. It is expected that substit…

The Instability of Monolayer-Thick PbSe on VSe2 Open

Dmitri Leo Mesoza Cordova, Shannon S. Fender, Mohammad Shahriar Hooshmand, Mina R. Buchanan, Joshua D. Davis , et al. · 2020

Two-dimensional monolayers derived from 3D bulk structures remain a relatively unexplored class of materials because of the challenge of stabilizing non-epitaxial interfaces. Here, we report an unusual reconstruction during the deposition …

Masthead: Crystal Research and Technology 7'2020 Open

Wolfgang Neumann, K. W. Benz, Marc Zastrow, Plamena Dogandzhiyski, Matt Lock , et al. · 2020