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- Brazier, F.M. (author), Dignum, F. (author), Dignum, M.V. (author), Huhns, M.H. (author), Lessner, T. (author), Padget, J. (author), Quillinan, T. (author), Singh, M.P. (author) conference paper 2010
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- Singh, P.S. (author), Zevenbergen, M.A.G. (author), Goluch, E.D. (author), Lemay, S.G. (author) journal article 2010
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Ding, F. (author), Singh, R. (author), Plumhof, J.D. (author), Zander, T. (author), K?ápek, V. (author), Chen, Y.H. (author), Benyoucef, M. (author), Zwiller, V. (author), Dörr, K. (author), Bester, G. (author), Rastelli, A. (author), Schmidt, O.G. (author)We study the effect of an external biaxial stress on the light emission of single InGaAs/GaAs(001) quantum dots placed onto piezoelectric actuators. With increasing compression, the emission blueshifts and the binding energies of the positive trion (X+) and biexciton (XX) relative to the neutral exciton (X) show a monotonic increase. This...journal article 2010
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- Singh, P.S. (author), Zevenbergen, M.A.G. (author), Goluch, E.D. (author), Lemay, S.G. (author) journal article 2009
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Singh, S. (author)The global energy issues can be solved by the abundantly available hydrogen on earth. Light metals are a compact and safe medium for storing hydrogen. This makes them attractive for vehicular use. Unfortunately, hydrogen uptake and release is slow in light metals at practical temperature and pressure conditions. Catalysts are known to accelerate...doctoral thesis 2009
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Eijt, S.W.H. (author), Kind, R. (author), Singh, S. (author), Schut, H. (author), Legerstee, W.J. (author), Hendrikx, R.W.A. (author), Svetchnikov, V.L. (author), Westerwaal, R.J. (author), Dam, B. (author)We report positron depth-profiling studies on the hydrogen sorption behavior and phase evolution of Mg-based thin films. We show that the main changes in the depth profiles resulting from the hydrogenation to the respective metal hydrides are related to a clear broadening in the observed electron momentum densities in both Mg and Mg2Ni films....journal article 2009
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Goluch, E.D. (author), Wolfrum, B. (author), Singh, P.S. (author), Zevenbergen, M.A.G. (author), Lemay, S.G. (author)Amperometric detection is ideally suited for integration into micro- and nanofluidic systems as it directly yields an electrical signal and does not necessitate optical components. However, the range of systems to which it can be applied is constrained by the limited sensitivity and specificity of the method. These limitations can be partially...journal article 2009
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- Singh, Sowmitra (author), Kinnas, Spyros A. (author) conference paper 2009
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Singh, S. (author), Eijt, S.W.H. (author)We report ab initio calculations based on density-functional theory, of the vacancy-mediated hydrogen migration energy in bulk NaH and near the NaH(001) surface. The estimated rate of the vacancy mediated hydrogen transport, obtained within a hopping diffusion model, is consistent with the reaction rates of H-D exchange in nano-NaH at the...journal article 2008
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- Bal, M.F. (author), Singh, M. (author), Braat, J.J.M. (author) journal article 2004
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Voogd, R.J. (author), Singh, M. (author), Braat, J.J.M. (author)We present a method to optically store multiple information in one location by having angular momentum imparted to the scanning beam by optical phase objects that make up the information areas on a surface. We show that the light beam thus perturbed carries an optical vortex, the rotation of which can be detected in the near-field focal region...conference paper 2004
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- Singh, Shyam (author) other 1989
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Chen, C.J. (author), Singh, K. (author)The use of second order closure turbulence model in predicting turbulent flows is known to be more successful than the classical mixing length model. However, it is found that if the turbulence constants are not altered or modified, the second order closure turbulence model is unable to predict satisfactorily f or some flows such as round jet...report 1985