Publications
Sep, 2026
ORNL Report
Oxidation of Molybdenum at 800°C and 1000°C in Flowing He with 0.5 to 250ppm O2
NorthStar has developed an accelerator-based method to produce Mo-99 without the need for highly enriched uranium. The Mo disk targets will be cooled by Helium flowing at high velocity, with an expected target temperature ranging from 1000°C in the center to 400°C at the edges. Oxidation is a concern since Mo is highly reactive in O2-containing environments at T>~500°C, an…
Sep, 2026
Conference Paper
Rotary Transformer for Wound Rotor Synchronous Motors
In this study, we present a resonant rotary transformer (RT) with an integrated rectifier for brushless excitation of wound rotor synchronous motors in electric vehicle applications. The primary-side of the RT employs an LCC resonant tank with Litz-wire winding and a high-frequency ferrite backplate, while the high-speed rotating secondary integrates the coil and rectifier…
Sep, 2026
Conference Paper
Quantifying Cost Drivers and Uncertainties in Nuclear Fuel Cycle Scenarios through Integrated Modeling
Sep, 2026
Journal
Autonomous Layer Time Optimization in Large-format Additive Manufacturing through Machine Vision and Feedback Control
Proper thermal management in large-format additive manufacturing (LFAM) to maintain geometric control and mechanical integrity requires, in part, maintaining the substrate, or the previously deposited layer temperature, within a defined process window. Temperatures that are too low result in weak interlayer bonds; conversely, elevated temperatures cause geometric instabili…
Sep, 2026
Journal
Solid Solvent in Salt: All-Solid-State Batteries Based on High LiTFSI Composition
A solid solvent in salt concept is applied to all-solid-state batteries (ASSBs) using a soft solid electrolyte (SE) composed of lithium bis(trifluoromethanesulfonyl)imide, succinonitrile, and ethylene carbonate with a weight ratio of 85/11/4. The developed SE exhibits an ionic conductivity of ∼10−4 S/cm at room temperature and an electrochemical stability window of approxi…
Sep, 2026
Journal
Polyolefin blends with co-continuous architectures enabled by dynamic covalent crosslinking
Blending polymers produces brittle materials due to macrophase separation and poor interfacial adhesion, which is exemplified by mixtures of polyolefins. This presents a formidable challenge for the mechanical recycling of mixed plastic waste. Here, we demonstrate that dynamic covalent crosslinking of immiscible polyolefin blends creates macrophase separated co-continuous…
Sep, 2026
ORNL Report
Keeping it Cool: Actionable Pathways for HVAC & Cooling Systems Waste Reduction
Process cooling and HVAC systems, including rooftop units (RTUs), chillers, and air handlers, are essential to manufacturing plants, commercial buildings, and data centers, and their use continues to expand. Over a typical 15–20 year service life, a single unit can generate several tons of waste across manufacturing, installation, operations and maintenance, mid-life repai…
Sep, 2026
Journal
From Lumped to Spatially Distributed Hydrologic Modeling: A Data‐Driven Framework Evaluated Across North American Catchments
Data-driven rainfall–runoff models have advanced rapidly, yet the majority of large-scale applications still rely on lumped inputs that smooth out spatial variability in precipitation, temperature, and landscape properties. This simplification can introduce substantial biases in flood peaks, hydrograph timing, and water balance estimates. Here, we develop a deep learning f…
Sep, 2026
Journal
Promising adhesive-based joining technology for residential and commercial HVAC&R applications
Vapor compression offers a more energy-efficient method of heating compared with traditional systems. Vapor compression system not only reduces carbon emissions but also helps lower utility bills by optimizing the consumption of electricity for heating and cooling. The overall cost-effectiveness of these technologies is influenced by factors such as system design, installa…