Samir de Moraes Shubeita

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Ilex paraguariensis A. St.-Hil. is used to prepare a traditional tealike beverage widely appreciated in Argentina, Paraguay, Uruguay, and southern Brazil. In these countries, the tea is popularly known as mate or chimarrão. The aim of this work is to characterize the elemental composition of commercial Ilex paraguariensis and determine the portion of each(More)
We report a novel approach for fabricating gold nanostar-functionalized substrates for highly sensitive surface enhanced Raman spectroscopy (SERS)-based chemical sensing. Gold nanostars immobilized on a gold substrate via a Raman silent organic tether serve as the SERS substrate, and facilitate the chemical sensing of analytes that can either be chemisorbed(More)
Y. Xu, X. Zhu, H. D. Lee, C. Xu, S. M. Shubeita, A. C. Ahyi, Y. Sharma, J. R. Williams, W. Lu, S. Ceesay, B. R. Tuttle, A. Wan, S. T. Pantelides, T. Gustafsson, E. L. Garfunkel, and L. C. Feldman Institute for Advanced Materials, Devices and Nanotechnology, Rutgers University, Piscataway, New Jersey 08854, USA Department of Chemistry and Chemical Biology,(More)
Articles you may be interested in Atomic state and characterization of nitrogen at the SiC/SiO2 interface Phosphorous and nitrogen are electrically active species at the SiO 2 /SiC interface in SiC MOSFETs. We compare the concentration, chemical bonding, and etching behavior of P and N at the SiO 2 /SiC(0001) interface using photoemission, ion scattering,(More)
The formation of radiation-induced dislocation loops and voids in tantalum at 180(2), 345(3) and 590(5)°C was assessed by 3MeV proton irradiation experiments and subsequent damage characterisation using transmission electron microscopy. Voids formed at 345(3)°C and were arranged into a body centred cubic lattice at a damage level of 0.55 dpa. The low(More)
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