Thermal expansion coefficient of hydrogenated amorphous carbon | Zendy

F. C. Marques | Zendy; R.G. Lacerda | Zendy; A. Champi | Zendy; Vlad Stolojan | Zendy; David Cox | Zendy; S. Ravi P. Silva | Zendy

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Thermal expansion coefficient of hydrogenated amorphous carbon

Author(s) -

F. C. Marques,

R.G. Lacerda,

A. Champi,

Vlad Stolojan,

David Cox,

S. Ravi P. Silva

Publication year - 2003

Publication title -

applied physics letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.182

H-Index - 442

eISSN - 1077-3118

pISSN - 0003-6951

DOI - 10.1063/1.1619557

Subject(s) - thermal expansion , materials science , carbon fibers , amorphous carbon , graphite , amorphous solid , poisson's ratio , composite material , analytical chemistry (journal) , chemistry , poisson distribution , crystallography , organic chemistry , composite number , statistics , mathematics

The coefficient of thermal expansion (CTE) of hydrogenated amorphous carbon (a-C:H) was investigated as a function of the concentration of sp2 hybridization. The CTE, determined using the thermally induced bending technique, depends on the concentration of sp2 bonded carbon, increasing to the value of graphite as the sp2 concentration approaches 100%. By using a combination of the thermally induced bending technique and nanohardness measurements, we extract separately the Young’s modulus and Poisson’s ratio of the a-C:H films as function of the sp2 concentration.

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