Zobrazeno 1 - 10
of 17
pro vyhledávání: '"Juraj Vavro"'
Publikováno v:
2016 11th International Conference on Advanced Semiconductor Devices & Microsystems (ASDAM).
A helium implantation is a common technique used for electron and hole lifetime control in semiconductor devices. Siemieniec [1] shows that suitable annealing conditions after the helium implantation lead to an increased conductivity of N-type silico
Autor:
Michelle Chen, Pascale Launois, Stéphane Badaire, Juraj Vavro, Vincent Pichot, Philippe Poulin, John E. Fischer, Cécile Zakri, Csaba Guthy
Publikováno v:
Journal of Applied Physics. 96:7509-7513
We report structure-property correlations in single-wall carbon nanotube (SWNT) fibers, among electrical, thermal, and chemical parameters with respect to stretch-induced preferential SWNT alignment along the fiber axis. Purified HiPco (high-pressure
Autor:
Wei Zhou, Rajesh K. Saini, Howard K. Schmidt, Myung Jong Kim, John E. Fischer, Sivarajan Ramesh, Virginia A. Davis, Wen Fang Hwang, Matteo Pasquali, Robert H. Hauge, Richard Booker, Juraj Vavro, Csaba Guthy, Richard E. Smalley, Joseph A. Sulpizio, Carter Kittrell, YuHuang Wang, Hua Fan, Lars M. Ericson, A. Nicholas G. Parra-Vasquez, Gerry Lavin, W. E. Billups, W. Wade Adams, Haiqing Peng
Publikováno v:
Science. 305:1447-1450
Well-aligned macroscopic fibers composed solely of single-walled carbon nanotubes (SWNTs) were produced by conventional spinning. Fuming sulfuric acid charges SWNTs and promotes their ordering into an aligned phase of individual mobile SWNTs surround
Autor:
Julia Fischer, Wei Zhou, Rajesh K. Saini, Robert H. Hauge, Sivarajan Ramesh, Matteo Pasquali, Virginia A. Davis, Lars M. Ericson, Richard E. Smalley, Juraj Vavro, Csaba Guthy, Carter Kittrell, Karen I. Winey
Publikováno v:
Journal of Applied Physics. 95:649-655
Fibers of single wall carbon nanotubes extruded from super-acid suspensions exhibit preferred orientation along their axes. We characterize the alignment by x-ray fiber diagrams and polarized Raman scattering, using a model which allows for a complet
Autor:
Wei Zhou, Juraj Vavro, Richard E. Smalley, M. C. Llaguno, Reto Haggenmueller, John E. Fischer, D. E Walters, Csaba Guthy, M. J. Casavant
Publikováno v:
Journal of Applied Physics. 93:2157-2163
Thick films of single wall carbon nanotubes (SWNT) exhibiting in-plane preferred orientation have been produced by filter deposition from suspension in strong magnetic fields. We characterize the field-induced alignment with x-ray fiber diagrams and
Publikováno v:
Applied Physics Letters. 80:1450-1452
We report measurements of electrical resistivity, thermopower, and thermal conductivity of highly C60-filled single-wall carbon nanotubes and unfilled controls, from 1.5 to 300 K. The data suggest that the C60 chains provide additional conductive pat
Autor:
Katalin Kamarás, Wei Zhou, John E. Fischer, Juraj Vavro, Norbert M. Nemes, David B. Tanner, Ferenc Borondics
Publikováno v:
Physical Review B. 71
The electronic properties of $p$-doped single-walled carbon nanotube (SWNT) bulk samples were studied by temperature-dependent resistivity and thermopower, optical reflectivity, and Raman spectroscopy. These all give consistent results for the Fermi
Publikováno v:
Physical Review B. 71
We find strong evidence for a metal-insulator sMId transition in macroscopic single wall carbon nanotube sSWNTd conductors. This is revealed by systematic measurements of resistivity and transverse magnetoresistance sMRd in the ranges 1.9‐300 K and
Autor:
Michelle Chen, John E. Fischer, Vincent Pichot, Juraj Vavro, Stéphane Badaire, Csaba Guthy, Philippe Poulin, Pascale Launois, Cécile Zakri
Publikováno v:
Scopus-Elsevier
Structural, electrical and thermal methods are applied to characterize single-walled carbon nanotube (SWNT) fibers with post-extrusion stretching as the independent variable. HiPco SWNTs are dispersed in water using sodium dodecyl sulfate (SDS), and
Autor:
Richard E. Smalley, Robert H. Hauge, Lars M. Ericson, Virginia A. Davis, John E. Fischer, Sivarajan Ramesh, Rajesh K. Saini, M. C. Llaguno, Juraj Vavro, Matteo Pasquali
Publikováno v:
Physical Review Letters. 90
We measured thermoelectric power S of bulk single-wall carbon nanotube materials p doped with acids. In contrast to oxygen-exposed or degassed samples, S is very small at the lowest temperatures, increases superlinearly above a characteristic and sam