NSF PAR Search | NSF Public Access Repository

Note: When clicking on a Digital Object Identifier (DOI) number, you will be taken to an external site maintained by the publisher. Some full text articles may not yet be available without a charge during the embargo (administrative interval).
What is a DOI Number?

Some links on this page may take you to non-federal websites. Their policies may differ from this site.

Inductively Coupled Nonthermal Plasma Synthesis of Size-Controlled γ-Al2O3 Nanocrystals

https://doi.org/10.3390/nano13101627

Xiong, Zichang; Andaraarachchi, Himashi P.; Held, Jacob T.; Dorn, Rick W.; Jeong, Yong-Jin; Rossini, Aaron; Kortshagen, Uwe R. (May 2023, Nanomaterials)

Gamma alumina (γ-Al2O3) is widely used as a catalyst and catalytic support due to its high specific surface area and porosity. However, synthesis of γ-Al2O3 nanocrystals is often a complicated process requiring high temperatures or additional post-synthetic steps. Here, we report a single-step synthesis of size-controlled and monodisperse, facetted γ-Al2O3 nanocrystals in an inductively coupled nonthermal plasma reactor using trimethylaluminum and oxygen as precursors. Under optimized conditions, we observed phase-pure, cuboctahedral γ-Al2O3 nanocrystals with defined surface facets. Nuclear magnetic resonance studies revealed that nanocrystal surfaces are populated with AlO6, AlO5 and AlO4 units with clusters of hydroxyl groups. Nanocrystal size tuning was achieved by varying the total reactor pressure yielding particles as small as 3.5 nm, below the predicted thermodynamic stability limit for γ-Al2O3.
more » « less
Full Text Available
Challenges to magnetic doping of thin films of the Dirac semimetal ${Cd}_{3} {As}_{2}$

https://doi.org/10.1103/PhysRevMaterials.6.024203

Xiao, Run; Held, Jacob T.; Rable, Jeffrey; Ghosh, Supriya; Wang, Ke; Mkhoyan, K. Andre; Samarth, Nitin (February 2022, Physical Review Materials)

Full Text Available
Nonthermal Plasma-Enhanced Chemical Vapor Deposition of Two-Dimensional Molybdenum Disulfide

https://doi.org/10.1021/acsomega.0c02947

Beaudette, Chad A.; Held, Jacob T.; Mkhoyan, K. Andre; Kortshagen, Uwe R. (September 2020, ACS Omega)

Full Text Available
Magnetic structure of ${Fe}_{16} N_{2}$ determined by polarized neutron diffraction on thin-film samples

https://doi.org/10.1103/PhysRevB.102.104402

Hang, Xudong; Matsuda, Masaaki; Held, Jacob T.; Mkhoyan, K. Andre; Wang, Jian-Ping (September 2020, Physical Review B)

Full Text Available
Thermal transport in ZnO nanocrystal networks synthesized by nonthermal plasma

https://doi.org/10.1103/PhysRevMaterials.4.086001

Wu, Xuewang; Greenberg, Benjamin L.; Zhang, Yingying; Held, Jacob T.; Huang, Dingbin; Barriocanal, Javier G.; Mkhoyan, K. Andre; Aydil, Eray S.; Kortshagen, Uwe; Wang, Xiaojia (August 2020, Physical Review Materials)
null (Ed.)
Full Text Available
Separating Electrons and Donors in BaSnO ₃ via Band Engineering

https://doi.org/10.1021/acs.nanolett.9b03825

Prakash, Abhinav; Quackenbush, Nicholas F.; Yun, Hwanhui; Held, Jacob; Wang, Tianqi; Truttmann, Tristan; Ablett, James M.; Weiland, Conan; Lee, Tien-Lin; Woicik, Joseph C.; et al (October 2019, Nano Letters)

Full Text Available
Plasmonic nanocomposites of zinc oxide and titanium nitride

https://doi.org/10.1116/1.5142858

Beaudette, Chad A.; Held, Jacob T.; Greenberg, Benjamin L.; Nguyen, Phong H.; Concannon, Nolan M.; Holmes, Russell J.; Mkhoyan, K. Andre; Aydil, Eray S.; Kortshagen, Uwe R. (July 2020, Journal of Vacuum Science & Technology A)

Search for: All records