Search Results - "HWANG, R. Q"

Enhanced self-diffusion on Cu(111) by trace amounts of S: Chemical-reaction-limited kinetics by LING, W. L, BARTELT, N. C, POHL, K, DE LA FIGUERA, J, HWANG, R. Q, MCCARTY, K. F

“…We find that less than 0.01 monolayer of S can enhance surface self-diffusion on Cu(111) by several orders of magnitude. The measured dependence of…”
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Alloying at Surfaces by the Migration of Reactive Two-Dimensional Islands by Schmid, A. K., Bartelt, N. C., Hwang, R. Q.

“…We have studied the formation kinetics of the copper-tin alloy bronze when tin is deposited on the (111) surface of copper at room temperature. Low-energy…”
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Herringbone and triangular patterns of dislocations in Ag, Au, and AgAu alloy films on Ru(0 0 0 1) by Ling, W.L., Hamilton, J.C., Thürmer, K., Thayer, G.E., de la Figuera, J., Hwang, R.Q., Carter, C.B., Bartelt, N.C., McCarty, K.F.

“…We have studied the dislocation structures that occur in films of Ag, Au, and Ag 0.5Au 0.5 alloy on a Ru(0 0 0 1) substrate. Monolayer (ML) films form…”
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Crucial role of substrate steps in de-wetting of crystalline thin films by Ling, W.L., Giessel, T., Thürmer, K., Hwang, R.Q., Bartelt, N.C., McCarty, K.F.

“…Using low-energy electron microscopy, we show that de-wetting of Ag and Cu films on Ru(0 0 0 1) occurs by 3-D islands migrating across step edges in the…”
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Identifying the forces responsible for self-organization of nanostructures at crystal surfaces by Hwang, R. Q, Pohl, K, Bartelt, M. C, de la Figuera, J, Bartelt, N. C, Hrbek, J

“…The spontaneous formation of organized surface structures at nanometre scales, has the potential to augment or surpass standard materials patterning…”
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Fractal growth of two-dimensional islands : Au on Ru(0001) by HWANG, R. Q, SCHRÖDER, J, GÜNTHER, G, BEHM, R. J

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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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Self-assembly via adsorbate-driven dislocation reactions by Thürmer, K, Carter, C B, Bartelt, N C, Hwang, R Q

“…Deposition of S onto a monolayer of Ag/Ru(0001) transforms the herringbone pattern of the clean Ag film into a strikingly regular array of 2D-vacancy islands…”
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Effect of Surface Steps on the Plastic Threshold in Nanoindentation by Kiely, J. D., Hwang, R. Q., Houston, J. E.

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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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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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Strain Relaxation in Hexagonally Close-Packed Metal-Metal Interfaces by Günther, C, Vrijmoeth, J, Hwang, RQ, Behm, RJ

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Strain relief through heterophase interface reconstruction: Ag(111)/Ru(0001) by LING, W. L, DE LA FIGUERA, J, BARTELT, N. C, HWANG, R. Q, SCHMID, A. K, THAYER, G. E, HAMILTON, J. C

“…We report an experimental (scanning tunneling microscopy) and theoretical (embedded atom method) study of a heterophase interface reconstruction between…”
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Strain stabilized alloying of immiscible metals in thin films by Stevens, JL, Hwang, RQ

“…The paper reports on the structure and composition of codeposited thin silver and copper films on Ru(0001) substrate. All three metals are immiscible in their…”
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Self-limiting growth of copper islands on TiO2(110)-(1 x 1) by CHEN, D. A, BARTELT, M. C, HWANG, R. Q, MCCARTY, K. F

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Direct observation of misfit dislocation glide on surfaces by de La Figuera, J, Pohl, K, de La Fuente, O R, Schmid, A K, Bartelt, N C, Carter, C B, Hwang, R Q

“…Using scanning tunneling microscopy we have observed thermally induced dislocation glide in monolayer Cu films on Ru(0001) at room temperature. The motion is…”
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Identifying the forces responsible for self-organization of nanostructures at crystal surfaces by POHL, K, BARTELT, M. C, DE LA FIGUERA, J, BARTELT, N. C, HRBEK, J, HWANG, R. Q

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Interplay between gas adsorption and dislocation structure on a metal surface by de la Figuera, J, Carter, C.B, Bartelt, N.C, Hwang, R.Q

“…The influence of oxygen and sulfur on the dislocation patterns of the strained two monolayer Cu film on Ru was observed by scanning tunneling microscopy. Both…”
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Role of stress in thin film alloy thermodynamics: competition between alloying and dislocation formation by Thayer, G E, Ozolins, V, Schmid, A K, Bartelt, N C, Asta, M, Hoyt, J J, Chiang, S, Hwang, R Q

“…Using scanning tunneling microscopy (STM) and first-principles local-spin-density-approximation calculations to study submonolayer films of Co (1-c)Ag…”
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Interaction of adsorbates on strained metallic layers by Hrbek, J, Hwang, R.Q

“…To relieve strain, metal surfaces under tensile or compressive stress often develop periodic two-dimensional patterns of dislocations. Recently, we have seen…”
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