Search Results - "Floro, J. A"

Origin of compressive residual stress in polycrystalline thin films by Chason, E, Sheldon, B W, Freund, L B, Floro, J A, Hearne, S J

“…We present a model for compressive stress generation during thin film growth in which the driving force is an increase in the surface chemical potential caused…”
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In situ measurements of the critical thickness for strain relaxation in AlGaN∕GaN heterostructures by Lee, S. R., Koleske, D. D., Cross, K. C., Floro, J. A., Waldrip, K. E., Wise, A. T., Mahajan, S.

“…Using in situ wafer-curvature measurements of thin-film stress, we determine the critical thickness for strain relaxation in AlxGa1−xN∕GaN heterostructures…”
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Ordered-Phase Equilibria in the Eutectoid Region of Bulk Fe-Pd by Savovici, A., Jensen, W., Soffa, W. A., Floro, J. A.

“…This report is the first analysis of the coexistence and microstructure of the equilibrium phases in the Fe-Pd L1 0  + L1 2 eutectoid region. Coexistence of L1…”
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Origins of growth stresses in amorphous semiconductor thin films by Floro, J A, Kotula, P G, Seel, S C, Srolovitz, D J

“…Stress evolution during deposition of amorphous Si and Ge thin films is remarkably similar to that observed for polycrystalline films. Amorphous semiconductors…”
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Site-selection of Si1−xGex quantum dots on patterned Si(001) substrates by Amatya, J. M., Floro, J. A.

“…We investigate the heteroepitaxial Si0.5Ge0.5 quantum dot site-selection on a patterned Si(001) substrate by continuously varying the underlying substrate…”
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Relaxation of compressively-strained AlGaN by inclined threading dislocations by Follstaedt, D. M., Lee, S. R., Provencio, P. P., Allerman, A. A., Floro, J. A., Crawford, M. H.

“…Transmission electron microscopy and x-ray diffraction were used to assess the microstructure and strain of Al x Ga 1 − x N ( x = 0.61 - 0.64 ) layers grown on…”
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Stress evolution during metalorganic chemical vapor deposition of GaN by Hearne, S., Chason, E., Han, J., Floro, J. A., Figiel, J., Hunter, J., Amano, H., Tsong, I. S. T.

“…The evolution of stress in gallium nitride films on sapphire has been measured in real time during metalorganic chemical vapor deposition. In spite of the 16%…”
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Anion adsorption induced reversal of coherency strain by TRIMBLE, T, TANG, L, VASILJEVIC, N, DIMITROV, N, VAN SCHILFGAARDE, M, FRIESEN, C, THOMPSON, C. V, SEEL, S. C, FLORO, J. A, SIERADZKI, K

“…Experimental results are presented for stress evolution, in vacuum and electrolyte, for the first monolayer of Cu on Au(111). In electrolyte the monolayer is…”
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Beyond the heteroepitaxial quantum dot : Self-assembling complex nanostructures controlled by strain and growth kinetics by GRAY, J. L, HULL, R, LAM, Chi-Hang, SUTTER, P, MEANS, J, FLORO, J. A

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Lamellar instabilities during scanning laser melting of Al–Cu eutectic and hypoeutectic thin films by Sullivan, E.J., Tomko, J.A., Skelton, J.M., Fitz-Gerald, J.M., Hopkins, P.E., Floro, J.A.

“…•Submicron eutectic and hypoeutectic Al–Cu films were directionally laser melted.•A larger mean value of λ2v is observed in 2D eutectic Al–Cu thin films vs. 3D…”
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Self-organized growth of alloy superlattices by Tersoff, J, Venezuela, P, Floro, J. A, Chason, E, Follstaedt, D. M, Liu, Feng, Lagally, M. G

“…Patterning in nature typically occurs through self-organization, and interest has developed recently in the use of such spontaneous processes to fabricate…”
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SiGe Island Shape Transitions Induced by Elastic Repulsion by Floro, J. A., Lucadamo, G. A., Chason, E., Freund, L. B., Sinclair, M., Twesten, R. D., Hwang, R. Q.

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Kinetic size selection mechanisms in heteroepitaxial quantum dot molecules by Gray, J L, Singh, N, Elzey, D M, Hull, R, Floro, J A

“…Heteroepitaxial growth of Si(0.7)Ge(0.3)/Si(001) films under kinetically limited conditions leads to self-assembly of fourfold quantum dot molecules. These…”
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Brittle-ductile relaxation kinetics of strained AlGaN/GaN heterostructures by Hearne, S. J., Han, J., Lee, S. R., Floro, J. A., Follstaedt, D. M., Chason, E., Tsong, I. S. T.

“…We have directly measured the stress evolution during metal-organic chemical vapor deposition of AlGaN/GaN heterostructures on sapphire. In situ stress…”
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Real-time stress evolution during Si1-xGex Heteroepitaxy: Dislocations, islanding, and segregation by Floro, J. A., Chason, E., Lee, S. R., Twesten, R. D., Hwang, R. Q., Freund, L. B.

“…We have used sensitive real-time measurements of film stress during Si1-xGex molecular beam epitaxy to examine strain relaxation due to coherent island…”
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Efficacy of elemental mixing of in situ alloyed Al-33wt%Cu during laser powder bed fusion by Skelton, J.M., Sullivan, E.J., Fitz-Gerald, J.M., Floro, J.A.

“…Challenges in developing novel alloys, specifically for use in laser powder bed fusion, may be overcome by in situ alloying of elemental powders during laser…”
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SiGe Coherent Islanding and Stress Relaxation in the High Mobility Regime by Floro, J. A., Chason, E., Twesten, R. D., Hwang, R. Q., Freund, L. B.

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Evolution of microstructure and magnetic properties in Co–Pt alloys bracketing the eutectoid composition by Ghatwai, P., Vetter, E., Hrdy, M., Soffa, W.A., Floro, J.A.

“…This work correlates the evolution of magnetic properties with microstructure for aging of Co–Pt alloys with compositions bracketing the A1→L10+L12 eutectoid…”
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Epitaxial Si encapsulation of highly misfitting SiC quantum dot arrays formed on Si (001) by Petz, C. W., Yang, D., Myers, A. F., Levy, J., Floro, J. A.

“…This work examines Si overgrowth to encapsulate 3C-SiC quantum dot arrays epitaxially grown on Si substrates. Using transmission electron microscopy, we show…”
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Hierarchical structure and the origins of coercivity in exchange-coupled Co-Pt nanochessboards by Floro, J.A., Vetter, E.P., Ghatwai, P., Geng, L.D., Jin, Y.M., Soffa, W.A.

“…•The evolution of structure and properties for Co-Pt nanochessboards are reported.•Exchange-coupling is controlled by the length scale of the chessboard…”
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