Zobrazeno 1 - 10
of 138
pro vyhledávání: '"Ferralis, Nicola."'
Rapid, non-destructive characterization of molecular level chemistry for organic matter (OM) is experimentally challenging. Raman spectroscopy is one of the most widely used techniques for non-destructive chemical characterization, although it curren
Externí odkaz:
http://arxiv.org/abs/1602.02083
The evolution of the electronic absorption edge of type I, II and III kerogen is studied by diffuse reflectance UV-Visible absorption spectroscopy. The functional form of the electronic absorption edge for all kerogens measured is in excellent agreem
Externí odkaz:
http://arxiv.org/abs/1503.00645
Publikováno v:
In Joule 16 December 2020 4(12):2693-2701
Publikováno v:
In Carbon December 2019 155:309-319
Autor:
Bernardi, Marco, Lohrman, Jessica, Kumar, Priyank V., Kirkeminde, Alec, Ferralis, Nicola, Grossman, Jeffrey C., Ren, Shenqiang
Carbon materials are excellent candidates for photovoltaic solar cells: they are Earth-abundant, possess high optical absorption, and superior thermal and photostability. Here we report on solar cells with active layers made solely of carbon nanomate
Externí odkaz:
http://arxiv.org/abs/1206.5042
We formulate, solve computationally and study experimentally the problem of collecting solar energy in three dimensions(1-5). We demonstrate that absorbers and reflectors can be combined in the absence of sun tracking to build three-dimensional photo
Externí odkaz:
http://arxiv.org/abs/1112.3266
Publikováno v:
Phys. Rev. B 83, 081410(R) (2011)
The temperature-induced shift of the Raman G line in epitaxial graphene on SiC and Ni surfaces, as well as in graphene supported on SiO2, is investigated with Raman spectroscopy. The thermal shift rate of epitaxial graphene on 6H-SiC(0001) is found t
Externí odkaz:
http://arxiv.org/abs/1101.4673
Autor:
Ferralis, Nicola
The use of Raman scattering techniques to study the mechanical properties of graphene films is reviewed here. The determination of Gruneisen parameters of suspended graphene sheets under uni- and bi-axial strain is discussed and the values are compar
Externí odkaz:
http://arxiv.org/abs/1005.4900
Publikováno v:
Phys. Rev. Lett. 103 (2009), 256102
The spreading of a bilayer gold film propagating outward from gold clusters, which are pinned to clean Si(111), is imaged in real time by low energy electron microscopy. By monitoring the evolution of the boundary of the gold film at fixed temperatur
Externí odkaz:
http://arxiv.org/abs/0912.0761
The evolution in the surface morphology of epitaxial graphene films and 6H-SiC(0001) substrates is studied by electron channeling contrast imaging. Whereas film thickness is determined by growth temperature only, increasing growth times at constant t
Externí odkaz:
http://arxiv.org/abs/0810.5171