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Search Publications

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Displaying 1901 - 1925 of 73697

Autonomous cementitious materials formulation for critical infrastructure repair

January 17, 2024
Author(s)
Howie Joress, Rachel Cook, Austin McDannald, Mark Kozdras, Jason hattrick-simpers, Aron Newman, Scott Jones
Despite the long history of cement and concrete, there are still large gaps in fundamental knowledge of their properties development. The dire need for improved cementitious repair materials, requires a revolution in the way they are formulated and tested

AM Bench 2022 Macroscale Tensile Challenge at Different Orientations (CHAL-AMB2022-04-MaTTO) and Summary of Predictions

January 16, 2024
Author(s)
Newell Moser, Jake Benzing, Orion Kafka, Jordan Weaver, Nicholas Derimow, Ross Rentz, Nik Hrabe
The additive manufacturing benchmarking challenge described in this work was aimed at the prediction of average stress–strain properties for tensile specimens that were excised from blocks of non-heat-treated IN625 manufactured by laser powder bed fusion

Morphological Characterization of Self-Amplifying mRNA Lipid Nanoparticles

January 16, 2024
Author(s)
Jacob Thelen, Wellington Leite, Volker Urban, Hugh O'Neill, Alexander Grieshaev, Joseph E. Curtis, Susan N. Krueger, Maria M. Castellanos
The mRNA technology has emerged as a rapid modality to develop vaccines during pandemic situations with the potential to protect against endemic diseases. The success of mRNA in producing an antigen is dependent on the ability to deliver mRNA to the cells

Per- and Polyfluoroalkyl Substances in Firefighter Turnout Gear Textiles Exposed to Abrasion, Elevated Temperature, Laundering, or Weathering

January 16, 2024
Author(s)
Andrew Maizel, Andre Thompson, Meghanne Tighe, Samuel Escobar Veras, Alix Rodowa, Ryan Falkenstein-Smith, Bruce A. Benner Jr., Kathleen Hoffman, Michelle K. Donnelly, Olivia Hernandez, Nadine Wetzler, Trung Ngu, Jessica Reiner, Benjamin Place, John Kucklick, Kate Rimmer, Rick D. Davis
Textiles used in the construction of structural firefighter turnout gear jackets and pants have been found to contain per- and polyfluoroalkyl substances (PFAS) as well as fluoropolymer membranes and treatments containing fluorinated polymers. Additionally

Toward a Standard Data Architecture for Additive Manufacturing

January 16, 2024
Author(s)
Shengyen Li, Shaw C. Feng, Alexander Kuan, Yan Lu
To advance the additive manufacturing (AM) technologies, R&D projects may evaluate new facilities and different processes that need a scalable data architecture to accommodate the progressing knowledge. This work introduces a data pedigree to enable the

Visible to Ultraviolet Frequency Comb Generation in Lithium Niobate Nanophotonic Waveguides

January 15, 2024
Author(s)
Tsung Han Wu, Luis Ledezma, Connor Fredrick, Pooja Sekhar, Ryoto Sekine, Quishi Guo, Ryan Briggs, Alireza Marandi, Scott Diddams
The introduction of nonlinear nanophotonic devices to the field of optical frequency comb metrology has enabled new opportunities for low-power and chip-integrated clocks, high-precision frequency synthesis, and broad bandwidth spectroscopy. However, most

Comprehensive Quantum Calculation of the First Dielectric Virial Coefficient of Water

January 12, 2024
Author(s)
Giovanni Garberoglio, Chiara Lissoni, Luca Spagnoli, Allan H. Harvey
We present a complete calculation, fully accounting for quantum effects and for molecular flexibility, of the first dielectric virial coefficient of water and its isotopologues. The contribution of the electronic polarizability is computed from a state-of

Morphology of Thin-Film Nafion on Carbon as an Analogue of Fuel Cell Catalyst Layers

January 11, 2024
Author(s)
Corey Randall, Lianfeng Zou, Howard Wang, Jingshu Hui, Joaquin Rodriguez-Lopez, Melodie Chen-Glasser, Joseph A. Dura, Steven DeCaluwe
Species transport in thin-film Nafion heavily influences proton exchange membrane (PEMFC) performance, particularly in low-platinum-loaded cells. Literature suggests phase-segregated nano-structures in hydrated Nafion thin films can reduce species mobility

Multi-code Benchmark on Ti K-edge X-ray Absorption Spectra of Ti-O Compounds

January 11, 2024
Author(s)
Fanchen Meng, Benedikt Maurer, Fabian Peschel, Sencer Selcuk, Xiaohui Qu, Mark S Hybertsen, Christian Vorwerk, Claudia Draxl, John Vinson, Deyu Lu
X-ray absorption spectroscopy (XAS) is an element-specific materials characterization technique that is sensitive to structural and electronic properties. First-principles simulated XAS has been widely used as a powerful tool to interpret experimental

Calculating Pairwise Similarity of Polymer Ensembles via Earth Mover's Distance

January 10, 2024
Author(s)
Jiale Shi, Dylan Walsh, Weizhong Zou, Nathan Rebello, Michael Deagen, Katharina Fransen, Xian Gao, Debra Audus, Bradley Olsen
Synthetic polymers, in contrast to small molecules and deterministic biomacromolecules, are typically ensembles composed of polymer chains with varying numbers, lengths, sequences, chemistry, and topologies. While numerous approaches exist for measuring

Characterizing Styrene Monomer and Oligomers by SEC/MALS/VISC/DRI

January 10, 2024
Author(s)
Andre Striegel
Worldwide polystyrene (PS) production in 2020 was approximately 27 million metric tons, distributed among many nations, making it one of the most heavily imported and exported chemicals. Commercially produced PS usually possesses a broad molar mass

Threshold and Laser Conversion in Nanostructured-Resonator Parametric Oscillators

January 10, 2024
Author(s)
Haixin Liu, Grant Brodnik, Jizhao Zang, David Carlson, Jennifer Black, Scott Papp
We explore optical parametric oscillation (OPO) in nanophotonic resonators, enabling arbitrary, nonlinear phase matching and nearly lossless control of energy conversion. Such pristine OPO laser converters are determined by nonlinear light-matter

Photonic Online Learning

January 9, 2024
Author(s)
Sonia Buckley, Adam McCaughan, Bakhrom Oripov
Training in machine learning necessarily involves more operations than inference only, with higher precision, more memory, and added computational complexity. In hardware, many implementations side-step this issue by designing "inference-only" hardware
Displaying 1901 - 1925 of 73697
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