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Role of graphene topography in the initial stages of pentacene layer growth
Manisha Chhikara, Gvido Bratina, Egon Pavlica, 2023, izvirni znanstveni članek

Ključne besede: graphene, topography, pentacene layer growth
Objavljeno v RUNG: 25.08.2023; Ogledov: 314; Prenosov: 3
.pdf Celotno besedilo (6,75 MB)
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Nanoscopic Roughness Characterization of Chitosan with Buried Graphene Oxide for Fuel Cell Application
Ahmed Kreta, Egon Pavlica, Mojca Božič, Gvido Bratina, 2023, objavljeni znanstveni prispevek na konferenci

Ključne besede: AFM, chitosan, graphene oxide, fuel cells, membrane, roughness
Objavljeno v RUNG: 01.03.2023; Ogledov: 844; Prenosov: 0
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Investigation of graphene oxide in diesel soot
Swapna Mohanachandran Nair Sindhu, Sankararaman S, 2017, izvirni znanstveni članek

Opis: Graphene has emerged as a potential material in various scientific disciplines, ranging from material science, engineering, and more recently biomedicine. The paper describes the investigation of the presence of graphene and graphene oxide (GO) in the carbon soot of internal combustion diesel engines. The UV-Visible, Fourier transform infrared (FTIR), X- ray diffraction (XRD), Photoluminescent (PL) and Raman spectroscopic analysis of the sample provided a conclusive evidence of the formation of graphene and GO. The Field Emission Scanning Electron Microscopy (FESEM) and Energy Dispersive Spectrum (EDX) of the sample show carbon nanoparticles (CNPs) of size less than 50nm. The High -Resolution Transmission Electron Microscopy (HR-TEM) analysis confirmed the formation of graphene sheets with carbon nanospheres attached to it. The study reveals the possible exploitation of the diesel soot for potential applications in science and technology
Ključne besede: Graphene, Graphene oxide, Carbon nanoparticles, Combustion, Carbon nanotube
Objavljeno v RUNG: 30.06.2022; Ogledov: 908; Prenosov: 0
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Through-plane and in-plane thermal diffusivity determination of graphene nanoplatelets by photothermal beam deflection spectrometry
Humberto Cabrera, Dorota Korte, Hanna Budasheva, Behnaz Abbasgholi N. Asbaghi, Stefano Bellucci, 2021, izvirni znanstveni članek

Opis: In this work, in-plane and through-plane thermal diffusivities and conductivities of a freestanding sheet of graphene nanoplatelets are determined using photothermal beam deflection spectrometry. Two experimental methods were employed in order to observe the effect of load pressures on the thermal diffusivity and conductivity of the materials. The in-plane thermal diffusivity was determined by the use of a slope method supported by a new theoretical model, whereas the through-plane thermal diffusivity was determined by a frequency scan method in which the obtained data were processed with a specifically developed least-squares data processing algorithm. On the basis of the determined values, the in-plane and through-plane thermal conductivities and their dependences on the values of thermal diffusivity were found. The results show a significant difference in the character of thermal parameter dependence between the two methods. In the case of the in-plane configuration of the experimental setup, the thermal conductivity decreases with the increase in thermal diffusivity, whereas with the through-plane variant, the thermal conductivity increases with an increase in thermal diffusivity for the whole range of the loading pressure used. This behavior is due to the dependence of heat propagation on changes introduced in the graphene nano-platelets structure by compression.
Ključne besede: graphene nanoplatelets, thermal diffusivity, thermal conductivity, photothermal spectrometry
Objavljeno v RUNG: 30.11.2021; Ogledov: 1458; Prenosov: 61
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Initial stages of growth of organic semiconductor on graphene
Manisha Chhikara, 2011, objavljeni povzetek znanstvenega prispevka na konferenci

Ključne besede: graphene, pentacene
Objavljeno v RUNG: 10.08.2021; Ogledov: 1331; Prenosov: 7
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Far-infrared spectroscopy of graphene under uniaxial strain
Manisha Chhikara, 2016, objavljeni povzetek znanstvenega prispevka na konferenci

Ključne besede: graphene, PET
Objavljeno v RUNG: 20.07.2021; Ogledov: 1533; Prenosov: 7
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