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Search Publications by: Aaron Johnston-Peck (Fed)

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Displaying 1 - 25 of 49

Phase Composition and Phase Transformation of Additively Manufactured Nickel Alloy 718 AM Bench Artifacts

February 5, 2024
Author(s)
Fan Zhang, Aaron Johnston-Peck, Lyle E. Levine, Michael Katz, Kil-Won Moon, Maureen E. Williams, Sandra W. Young, Andrew J. Allen, Olaf Borkiewicz, Jan Ilavsky
Additive Manufacturing (AM) technologies offer unprecedented design flexibility but are limited by a lack of understanding of the material microstructure formed under their extreme and transient processing conditions and its subsequent transformation

Stability-Enhanced Cisplatin Gold Nanoparticles as Therapeutic Anticancer Agents

December 22, 2023
Author(s)
Tae Joon Cho, Vytas Reipa, John Pettibone, Justin Gorham, Allesandro Tona, Aaron Johnston-Peck, Bryant C. Nelson, Vincent Hackley
Using dendron chemistry, we developed stability-enhanced carboxylate surfacemodified (negatively charged dendron) AuNPs (Au-NCD). Since the carboxylate surface of Au- NCD is optimal for complexation with cisplatin (Pt) moieties, we further synthesized Pt

Long Range and Collective Impact of Au Surface Adatoms on Nanofin Growth

November 3, 2023
Author(s)
Babak Nikoobakht, Aaron Johnston-Peck, Jerry Tersoff
In the Au-catalyzed vapor-liquid-solid (VLS) growth of semiconductor nanowires, individual Au nanodroplets can result in single nanowires per site. However, growth of single nanofins per site using the same process becomes unpredictable. Our results show