Mechanical and Thermal Properties of Linear Carbon Chains Encapsulated by Multi- and Double -Walled Carbon Nanotubes

As a field of study, optics have been a critical to the development of material’s science. The interaction between light and matter is often non-destructive and non-invasive; making it powerful in the determination of materials’ compositions, and their properties at the electronic and vibrational levels. In the present work, we have broadened the use of light spectroscopy as a technique to determine, accurately, mechanical and thermal properties of molecular systems. More specifically, pressure (P) and temperature (T)-dependent Raman spectroscopy allowed us to access elusive mechanical (Young’s modulus (E), Grüneisen parameter (γ), and mechanical strain (ε)) and thermal properties (coefficient of thermal expansion (α), specific heat capacity (c_v), and thermal strain (ε_T)) of linear carbon chains (LCCs), which are one-atom thick linear carbon molecules. The results show that all these quantities follow universal relations that are solely dependent on P, T, and on the number of carbon atoms (N). In Appendix 01 we also describe how spectral derivative analysis combined with absorption and photo-luminescence spectroscopies allowed for unravelling elusive electronic and vibronic transition in free base 5,10,15,20-meso-tetra(pyridyl)-21H,23H-porphyrin (H2TPyP).

Grantor dc:publisher

University of Alabama Libraries

Year dc:date.issued

2021

Author dc:creator

• Sharma, Keshav

Advisor dc:contributor.advisor

• Araujo, Paulo T.

Contributors dc:contributor

• Hauser, Adam J
• Barbosa, Newton Mb
• Schwiete, Georg
• Okada, Nobuchika
• Gupta, Subhadra

• Anharmonicity
• Lattice Dynamics
• Linear Carbon Chains
• Mechanical Properties
• Raman Spectroscopy
• Thermal Properties

Statement dc:rights

• All rights reserved by the author unless otherwise indicated.

Language dc:language.iso

en_US, English

Dc Identifier Other

http://purl.lib.ua.edu/181543
u0015_0000001_0003982
Sharma_alatus_0004D_14503

OAI identifier oai:identifier

oai:ir.ua.edu:123456789/8214