THz TDS study of several sp(2) carbon materials: Graphite, needle coke and graphene oxides
Por:
Chamorro-Posada, Pedro, Vazquez-Cabo, Jose, Rubinos-Lopez, Oscar, Martin-Gil, Jesus, Hernandez-Navarro, Salvador, Martin-Ramos, Pablo, Sanchez-Arevalo, Francisco M., Tamashausky, Albert V., Merino-Sanchez, Cesar, Dante, Roberto C.
Publicada:
1 mar 2016
Categoría:
Chemistry (miscellaneous)
Resumen:
Terahertz time-domain spectroscopy has been used to probe the properties
of four carbon allotropes with a sequenced c-axis stacking order:
single-layer reduced graphene oxide, few-layer graphene oxide,
disordered needle coke and highly organized graphite. The results
obtained demonstrate a very high sensitivity to the structural
characteristics of the tested samples. The multi-layer materials show
the same type of spectral response with strong variations in the
attenuation in the whole terahertz band depending on their constructural
organization. The single-layer sample shows a distinct response where
conductive effects dominate. The results obtained are consistent with
theoretical investigations using semi-empirical quantum chemistry
methods. (C) 2015 Elsevier Ltd. All rights reserved.
Filiaciones:
Chamorro-Posada, Pedro:
Univ Valladolid, Dept Teor Senal & Comunicac & Ingn Telemat, ETSI Telecomunicac, E-47011 Valladolid, Spain
Vazquez-Cabo, Jose:
Univ Vigo, Dept Teor Senal & Comunicac, EI Telecomunicac, E-36310 Vigo, Pontevedra, Spain
Rubinos-Lopez, Oscar:
Univ Vigo, Dept Teor Senal & Comunicac, EI Telecomunicac, E-36310 Vigo, Pontevedra, Spain
Martin-Gil, Jesus:
Univ Valladolid, Adv Mat Lab, ETSIIAA, Palencia 34004, Spain
Hernandez-Navarro, Salvador:
Univ Valladolid, Adv Mat Lab, ETSIIAA, Palencia 34004, Spain
Martin-Ramos, Pablo:
Univ Valladolid, Adv Mat Lab, ETSIIAA, Palencia 34004, Spain
Sanchez-Arevalo, Francisco M.:
Univ Nacl Autonoma Mexico, Inst Invest Mat, Coyoacan 04510, DF, Mexico
Tamashausky, Albert V.:
Asbury Carbons Inc, Tech Serv, Asbury Pk, NJ 08802 USA
Merino-Sanchez, Cesar:
Grp Antolin Ingn SA, Burgos, Spain
Dante, Roberto C.:
Escuela Politec Nacl, Fac Mecan, Nanomat & Simulat Lab, Quito, Ecuador
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