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Andrew R. Konicek
Researcher at ExxonMobil
Publications - 32
Citations - 1451
Andrew R. Konicek is an academic researcher from ExxonMobil. The author has contributed to research in topics: Diamond & Amorphous carbon. The author has an hindex of 15, co-authored 29 publications receiving 1223 citations. Previous affiliations of Andrew R. Konicek include University of Pennsylvania & National Institute of Standards and Technology.
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Journal ArticleDOI
Mechanisms of antiwear tribofilm growth revealed in situ by single-asperity sliding contacts
Nitya Nand Gosvami,J.A. Bares,Filippo Mangolini,Andrew R. Konicek,Dalia G. Yablon,Robert W. Carpick +5 more
TL;DR: Atomic force microscopy monitoring in ZDDP-containing lubricant base stock at elevated temperatures monitored the growth and properties of the tribofilms in situ in well-defined single-asperity sliding nanocontacts, highlighting the critical role of stress and thermal activation.
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Origin of ultralow friction and wear in ultrananocrystalline diamond
Andrew R. Konicek,David S. Grierson,Pupa U. P. A. Gilbert,W. G. Sawyer,Anirudha V. Sumant,Robert W. Carpick +5 more
TL;DR: This work finds ultralow friction and wear for ultrananocrystalline diamond surfaces even in dry environments, and observes negligible rehybridization except for a modest, submonolayer amount under the most severe conditions (high load, low humidity).
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Influence of surface passivation on the friction and wear behavior of ultrananocrystalline diamond and tetrahedral amorphous carbon thin films
Andrew R. Konicek,David S. Grierson,Anirudha V. Sumant,T. A. Friedmann,J. P Sullivan,Pupa U. P. A. Gilbert,Wallace Gregory Sawyer,Robert W. Carpick +7 more
TL;DR: In this paper, the effect of water vapor on friction and wear was examined as a function of applied normal force for two such materials in thin film form: one that is fully amorphous in structure (tetrahedral ammorphous carbon, or ta-C) and one that was polycrystalline with $l 10$ nm grains [ultrananocrystalline diamond (UNCD)].
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Surface composition, bonding, and morphology in the nucleation and growth of ultra-thin, high quality nanocrystalline diamond films
Anirudha V. Sumant,Pupa U. P. A. Gilbert,David S. Grierson,Andrew R. Konicek,Mike Abrecht,James E. Butler,Tatyana Feygelson,Shlomo S. Rotter,Robert W. Carpick +8 more
TL;DR: In this article, the morphology, composition, and bonding character of continuous, ultra-thin (thickness ∼60 nm) nanocrystalline diamond (NCD) membranes are reported.
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Thermal Stability and Rehybridization of Carbon Bonding in Tetrahedral Amorphous Carbon
David S. Grierson,Anirudha V. Sumant,Andrew R. Konicek,T. A. Friedmann,J. P Sullivan,Robert W. Carpick +5 more
TL;DR: In this article, the authors performed a quantitative investigation of the energy of thermally induced sp3→sp2 conversion of carbon-carbon bonds in tetrahedral amorphous carbon (ta-C) films by using near-edge x-ray absorption fine structure (NEXAFS) and Raman spectroscopy.