Zobrazeno 1 - 10
of 14
pro vyhledávání: '"Eva A. Dias"'
Autor:
Eva Orzechowski Dias
Publikováno v:
Working Papers em Linguística, Vol 11, Iss 0, Pp 1-19 (2010)
O presente trabalho constitui-se em um estudo sociolinguístico da variação dos segmentos fonológicos /t, d/ quando se realizam foneticamente diante de vogal alta posterior [u] na região de Florianópolis. As variantes concorrentes são as oclusi
Externí odkaz:
https://doaj.org/article/4d96e52be1094ba19a2049ff7c8dcbef
Publikováno v:
The Journal of Physical Chemistry C. 116:5407-5413
Semiconductor quantum dots are of interest as optical gain media for lasing applications. Here we report on efficient, broad bandwidth optical gain in the CdSe/ZnS/CdSe quantum dot/barrier/quantum shell nanocrystal. These nanocrystals are known to su
Publikováno v:
The Journal of Physical Chemistry C. 112:14229-14232
Single dot spectroscopy is performed on two-color CdSe/ZnS/CdSe core/barrier/shell nanostructures. Unlike quantum dots cores, these systems have two phases with which to emit and ultimately examine for blinking analysis. These particles are brighter
Publikováno v:
The Journal of Physical Chemistry C. 111:708-713
Excitation transfer pathways in colloidal core/barrier/shell nanomaterials were investigated in the CdSe/ZnS/CdSe system. Absorption of light in the outer CdSe shell results in emission from the band edge of the CdSe core. The CdSe quantum shell acts
Autor:
Eva A. Dias, Christopher B. Murray, Brenna R. Walsh, Danielle C. Reifsnyder, Michael M. Krause, Patanjali Kambhampati, Jonathan I. Saari
Publikováno v:
The journal of physical chemistry. B. 117(16)
Aging of semiconductor nanocrystals (NCs) is well-known to attenuate the spontaneous photoluminescence from the band edge excitonic state by introduction of nonradiative trap states formed at the NC surface. In order to explore charge carrier dynamic
Publikováno v:
Physical Review B. 84
Biexciton processes in semiconductor nanocrystals, e.g. optical gain, are widely treated as arising from structureless biexcitons. We challenge this view by observing the binding energies of hot biexcitons in CdSe nanocrystals. These experiments reve
Publikováno v:
Applied Organometallic Chemistry.
The direct patterning of poly(p-methoxyphenylmethylsilane) (PMPMS) and poly(p-methoxyphenylmethylgermane) (PMPMG) by interference lithography is reported. Copyright © 2011 John Wiley & Sons, Ltd.
Autor:
Eva A. Dias, D. M. Sagar, Samuel L. Sewall, Ryan R. Cooney, Kevin E. H. Anderson, Patanjali Kambhampati
Publikováno v:
The Journal of chemical physics. 129(8)
Biexcitons in strongly confined, colloidal CdSe quantum dots were investigated with excitonic state selectivity combined with 10 fs temporal precision. Within the first 50 fs, the first excited state of the biexciton was observed. By 100 ps, mixed ch
Autor:
Patanjali Kambhampati, Mirela M. Barsan, Ian S. Butler, Samuel L. Sewall, Ryan R. Cooney, Eva A. Dias, D. M. Sagar
Publikováno v:
Physical Review B. 77
Autor:
Patanjali Kambhampati, Samuel L. Sewall, Eva A. Dias, Ryan R. Cooney, D. M. Sagar, Kevin E. H. Anderson
Publikováno v:
Physical Review B. 75
Size dependent electron and hole relaxation dynamics were measured in colloidal CdSe quantum dots with state-to-state specificity. These experiments reveal the electron and hole state-to-state relaxation dynamics with a precision of $\ensuremath{\sim