Zobrazeno 1 - 10
of 101
pro vyhledávání: '"Don A. Lucca"'
Autor:
Hyosim Kim, Tianyao Wang, Jonathan Gigax, Arezoo Zare, Don A. Lucca, Zhihan Hu, Yongchang Li, Trevor Parker, Lin Shao
Publikováno v:
Nano Convergence, Vol 10, Iss 1, Pp 1-9 (2023)
Abstract Amorphous metallic glasses (MGs) convert to crystalline solids upon annealing at a high temperature. Such a phase change, however, does not occur with the local melting caused by damage cascades introduced by ion irradiation, although the re
Externí odkaz:
https://doaj.org/article/4bfcff9fcdac4cbd893ac04ee79d4fc9
Autor:
Engang Fu, Jonathan G. Gigax, Don A. Lucca, Lin Shao, Kenneth L. Peddicord, A. Zare, Hyosim Kim, Jianyuan Fan, Tianyao Wang
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 451:1-5
A comparison study is performed to evaluate the feasibility of ion cutting of metallic glass (MG) by using hydrogen ion and helium ion implantation. MG Ti40Cu31Pd14Zr10Sn2Si3 is implanted with 100 keV He ions to a dose of 5 × 1017 ions/cm2 at room t
Autor:
Assel Aitkaliyeva, Guoqiang Xie, Lloyd Price, Jonathan G. Gigax, Don A. Lucca, Lin Shao, Engang Fu, Hyosim Kim, A. Zare
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 448:57-60
The paper reports formation of ordered nanocrystals in amorphous Cu50Zr45Ti5 metallic glass (MG) when exposed to ions in focused ion beam (FIB) instrument. The specimen was subjected to 30 keV Ga ion beam during trenching, lift out of a lamella, and
Autor:
David N. McIlroy, T.A. Harriman, Roberto Montealegre, Charuksha Walgama, Sadagopan Krishnan, Anuruddha Pathiranage, Jinesh Niroula, Don A. Lucca, Elena Echeverria, Mayowa Akinwale
Publikováno v:
ACS Applied Bio Materials. 2:2229-2236
Electrode materials play an important role on the electrocatalytic properties of immobilized biocatalysts. In this regard, achieving direct electronic communication between the electrode and redox sites of biocatalysts eliminates the need for additio
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 447:55-58
The microstructural relaxation caused by heat treatment of ion-irradiated silica-based thin films was investigated. Hybrid organic-inorganic silica-based thin films were synthesized via a sol-gel process and were irradiated with 125 keV H+ or 250 keV
Autor:
Jonathan G. Gigax, T.A. Harriman, A. Zare, Don A. Lucca, Lin Shao, S.A. Shojaee, Qing Su, Michael Nastasi, Nicholas F. Materer
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 446:10-14
Amorphous silicon oxycarbide (SiOC) films, fabricated by magnetron sputtering, were irradiated at room temperature with 3.5 MeV Fe ions to damage levels of 10, 20, and 50 displacements per atom (dpa). Irradiation-induced changes in the nature of the
Autor:
Chao Gu, A. Zare, Michael Nastasi, Kaisheng Ming, Yongqiang Wang, Jian Wang, Don A. Lucca, Qing Su
Publikováno v:
Journal of Nuclear Materials. 516:289-296
Amorphous SiOC films were synthesized by magnetron sputtering at room temperature with/without radio frequency (RF) bias and further improved in terms of mechanical properties by ion irradiation. As-deposited SiOC films without RF bias exhibit catast
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 444:103-106
A study of the effects of nuclear and electronic stopping powers on the ion irradiation-induced conversion of hybrid silicate thin films is presented. The films were synthesized by sol-gel processing from a combination of tetraethylorthosilicate (TEO
Publikováno v:
Scientific Reports, Vol 9, Iss 1, Pp 1-13 (2019)
Scientific Reports
Scientific Reports
This study investigates the microstructural evolution and mechanical response of sputter-deposited amorphous silicon oxycarbide (SiOC)/crystalline Fe nanolaminates, a single layer SiOC film, and a single layer Fe film subjected to ion implantation at
Publikováno v:
Acta Materialia. 140:10-19
Irradiation-induced changes in the structural and mechanical properties of nanocrystalline Fe, amorphous silicon oxycarbide (SiOC), and Fe/SiOC nanolaminate films were studied using X-ray diffraction, atomic force microscopy, scanning/transmission el