scholarly journals An extended thermodynamic model for size-dependent thermoelectric properties at nanometric scales: Application to nanofilms, nanocomposites and thin nanocomposite films

2016 ◽  
Vol 40 (3) ◽  
pp. 2143-2160 ◽  
Author(s):  
H. Machrafi
Keyword(s):  
Thermoelectric Properties ◽  
Thermodynamic Model ◽  
Nanocomposite Films ◽  
Size Dependent ◽  
Extended Thermodynamic

Microstructure and Optical Properties of Au–Y2O3-stabilized ZrO2 Nanocomposite Films

2005 ◽  
Vol 20 (9) ◽  
pp. 2516-2522 ◽  
Author(s):  
George Sirinakis ◽  
Rezina Siddique ◽  
Christos Monokroussos ◽  
Michael A. Carpenter ◽  
Alain E. Kaloyeros
Keyword(s):  
Optical Properties ◽  
Au Nanoparticles ◽  
Annealing Temperature ◽  
Rutherford Backscattering Spectrometry ◽  
Nanocomposite Films ◽  
Au Nanoparticle ◽  
X Ray Diffraction ◽  
Working Pressure ◽  
Optical Absorption Band ◽  
Size Dependent

Nanocomposite films consisting of gold nanoparticles embedded in an yttria stabilized zirconia (YSZ) matrix were synthesized at room temperature by radio-frequency co-sputtering from YSZ and Au targets at a 5 mTorr working pressure. The films were subsequently annealed for 2 h in 1 atm argon, with the annealing temperature varied from 600 to 1000 °C in steps of 100 °C. The composition, microstructure, and optical properties of the films were characterized as a function of annealing temperature by Rutherford backscattering spectrometry, scanning electron microscopy, Auger electron spectroscopy, x-ray diffraction, and absorption spectroscopy. An optical absorption band due to the surface plasmon resonance (SPR) of the Au nanoparticles was observed around a wavelength of 600 nm. Furthermore, the SPR band full width at half-maximum exhibited an inverse linear dependence on the radius of the Au nanoparticle, with a slope parameter A = 0.18, indicating a weak interaction between the YSZ matrix and the Au nanoparticles. The experimentally observed SPR dependence on nanoparticle size is discussed within the context of the Mie theory and its size-dependent optical constants.

Size dependent nonlinear optical properties of spin coated zinc oxide-polystyrene nanocomposite films

2012 ◽  
Vol 285 (24) ◽  
pp. 5433-5439 ◽  
Author(s):  
Pullarkat P. Jeeju ◽  
S. Jayalekshmi ◽  
K. Chandrasekharan ◽  
P. Sudheesh
Keyword(s):  
Zinc Oxide ◽  
Optical Properties ◽  
Nonlinear Optical ◽  
Nonlinear Optical Properties ◽  
Nanocomposite Films ◽  
Size Dependent

Size-dependent optical properties of transparent, spin-coated polystyrene/ZnO nanocomposite films

2011 ◽  
Vol 60 (8) ◽  
pp. 1263-1268 ◽  
Author(s):  
Pullarkat P Jeeju ◽  
Augustine M Sajimol ◽  
Vallath G Sreevalsa ◽  
Sreekanth J Varma ◽  
S Jayalekshmi
Keyword(s):  
Optical Properties ◽  
Nanocomposite Films ◽  
Size Dependent

Improving the thermoelectric power factor of CNT/PEDOT:PSS nanocomposite films by ethylene glycol treatment

RSC Advances ◽  
2016 ◽  
Vol 6 (58) ◽  
pp. 53339-53344 ◽  
Author(s):  
Woohwa Lee ◽  
Young Hun Kang ◽  
Jun Young Lee ◽  
Kwang-Suk Jang ◽  
Song Yun Cho
Keyword(s):  
Ethylene Glycol ◽  
Thermoelectric Power ◽  
Thermoelectric Properties ◽  
Power Factor ◽  
Treatment Method ◽  
Nanocomposite Films ◽  
Thermoelectric Power Factor

This study investigates a treatment method with ethylene glycol for improving the thermoelectric properties of CNT/PEDOT:PSS nanocomposite films.

On some remarkable properties of an extended thermodynamic model for dense gases and macromolecular fluids

2010 ◽  
Vol 466 (2118) ◽  
pp. 1645-1666 ◽  
Author(s):  
M. C. Carrisi ◽  
M. A. Mele ◽  
S. Pennisi
Keyword(s):  
Exact Solution ◽  
Thermodynamic Model ◽  
Conservation Law ◽  
Entropy Density ◽  
Extended Thermodynamics ◽  
Dense Gases ◽  
Galilean Relativity ◽  
Extended Thermodynamic ◽  
Entropy Principle ◽  
The Moment

Recently, the 14 moments model of extended thermodynamics for dense gases and macromolecular fluids has been considered and an exact solution, of the restrictions imposed by the entropy principle and that of Galilean relativity, has been obtained without using Taylor's expansions. Here, we prove the uniqueness of the above solution and exploit other pertinent conditions such as the convexity of the function h ′ related to the entropy density, the problem of subsystems and the fact that the flux in the conservation law of mass must be the moment of order 1 in the conservation law of momentum. The results present interesting aspects which were not suspected when only approximated solutions of this problem were known.

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