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Addleman, Raymond Shane

Publications and source records attributed to Addleman, Raymond Shane.

7 records
All sourcesNASA NTRSDOE OSTI
DOE OSTI2024

Enhancing Lifetime and Reducing Costs for Fish Diversion Netting Structures (Final Report)

In this effort Pacific Northwest National Laboratory (PNNL) developed and demonstrated an anti-fouling coating that is effective on fish diversion structures. The coating was based on a previously developed superhydrophobic lubricant infused composite (SLIC) coating but modified for application to flexible substrates. We showed that the new reformulated coating – FlexiSLIC – can be applied to flexible fibrous structures to significantly reduce biofouling of netting and anchor lines, to enable longer operational lifetimes, reduced costs, and more reliable operations. The coating developed in this effort was tested on relevant fish diversion structural netting and rope materials (e.g. nylon, Dyneema, polypropylene) to reduce biofouling. Engagement with industry in the development and demonstration further supported progress toward commercialization of the materials.

36 MATERIALS SCIENCE↗
DOE OSTI2024

Advanced Mineral Extraction and Water Processing: Application Development of Mesofluidic Separation Technology

This project explored the development of mesofluidic devices and methods to provide a range of new capabilities with a focus on selective mineral extraction and cost-effective water treatment systems. Mineral separation and water treatment technologies are typically slow, bulky, expensive, time and energy intensive processes. This leads to very large, expensive processing plants that are often inefficient and produce low quality products and large volumes of waste. Technologies used in mineral extraction and water treatment have changed little in the last 50-100 years. The new technology, based upon mesofluidic separation devices, could disruptively change the state of the art and alter long established economics. The new technologies explored will provide systems with much smaller footprints, higher throughput, modular components easily integrated into existing industrial processes and plants, lower cost, and novel separation capabilities. The results from this effort contributed to a wide range of new capabilities and numerous inventions disclosures.

42 ENGINEERING↗
DOE OSTI2022

Durable Super-Repellant Materials for Stretchable and Flexible Personal Protective Equipment

The goal of this report is to summarize findings from development of new flexible protective coatings with superhydrophobic properties. For many practical applications, the durability of such coatings must far exceed what it currently possible. We aimed to develop coatings that can be integrated into personal protective equipment to provide an additional barrier that can shed and reduce the spread of infectious liquids. The COVID-19 pandemic has revealed the importance of PPE for frontline healthcare workers. Developing durable protective coatings could have both immediate impacts during the pandemic and long-term benefits in multiple industries.

36 MATERIALS SCIENCE↗
DOE OSTI2021

Hydrothermal Liquid Recovery of Rare Earth Elements and Critical Materials

This project demonstrated the technical viability of using tunable hydrothermal liquid (HTL) solutions to recover valuable minerals from a range of source materials. The effort focused upon rare earth elements (REE) and other minerals critical to the industrial security of the United States. This effort demonstrated, for the first time, that s, supercritical water (SCW) in particular, can: Extract critical and valuable minerals from a range of matrices ranging from rock ore to biomass; The process can be used to recover a wide range of minerals; This novel extraction chemistry can be cheap, simple, and nontoxic/”green”: The chemical extraction uses water, the cheapest industrial acid (sulfuric), and simple salts (i.e. sodium sulfate). However, other acids, salts, and additives could be used as appropriate. This Laboratory Directed Research and Development (LDRD) project identified that the process is complex with many interacting factors, but the benefits are significant if the complexities can be resolved. Challenges remain in the development of this technology and are described in this report. However, the results are positive, and commercial partners have already expressed interest. In summary, a novel, green, inexpensive mineral extraction process has been developed and demonstrated in a small batch reactor system. The effort provided information for an invention disclosure, proposal to DOE, and will support future business development efforts.

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CH↗
DOE OSTI2019

Polyfunctional sorbent materials

Disclosed herein is a material comprising a functionalized solid support surface, wherein the functionalization comprises a thioalkylene linker bound to the support surface and the thioalkylene linker is coupled to a moiety derived from a ligand, wherein the ligand includes a terminal alkenyl and at least one first functional group configured to bind to at least one predetermined target species.

Nell, Kara↗
DOE OSTI2019

Rapid nondestructive measurement of bacterial cultures with 3D interferometric imaging

The agar culture plate has played a crucial role in bacteriology since the origins of the discipline. However, plating, inoculating, and waiting for microbes to develop colonies that are visible is time-consuming. In this work, we explored if white-light interferometry (WLI) would be a practical tool for reducing the wait time required before colonies can be identified and counted. High resolution surface profile imaging was used for non-destructive characterization and counting of bacterial colonies on agar before they became visible to the naked eye. The three-dimensional (3D) morphology of Gram-negative ( Pseudomonas fluorescens ) and Gram-positive ( Bacillus thuringiensis ) bacterial species were visualized over time by collecting surface profiles of colonies on agar plates with high vertical resolution (3-5 nanometers) and large field of view (3-5 mm). This unique combination of sensitive vertical resolution at low magnification enabled simultaneous detection of hundreds of microcolonies. The colonies were accurately counted within the first few hours after plating with results comparing favorably to counts made by traditional methods. Since the imaging is non-destructive it was used to track single cells multiplying into small colonies and the volumetric changes in the colony were used to accurately measure colony growth rates over time. Based on the results herein, bioimaging with WLI was demonstrated as a powerful bacterial culture assay. Fast non-destructive counting of colony-forming units in a culture and simultaneous measurement of bacterial growth rates with this method suggest that it may lead to beneficial future applications in research, clinical, and other settings.

59 BASIC BIOLOGICAL SCIENCES↗