Characterization of the photothermal deflection densitometer

1985 ◽  
Vol 57 (7) ◽  
pp. 1359-1362 ◽  
Author(s):  
Konan. Peck ◽  
Fotios K. Fotiou ◽  
Michael D. Morris
Keyword(s):  
Photothermal Deflection

Characterization of Micron-Sized, Optical Coating Defects by Photothermal Deflection Microscopy

2008 ◽  
pp. 385-385-8
Author(s):  
JA Abate ◽  
AW Schmid ◽  
MJ Guardalben ◽  
DJ Smith ◽  
SD Jacobs
Keyword(s):  
Optical Coating ◽  
Photothermal Deflection

Thermal diffusivity maps: Case studies in ceramics

1997 ◽  
Vol 12 (9) ◽  
pp. 2381-2387 ◽  
Author(s):  
Lanhua Wei ◽  
Grady S. White
Keyword(s):  
Experimental Data ◽  
Thermal Diffusivity ◽  
Case Studies ◽  
Composite Structures ◽  
Contact Damage ◽  
Fiber Reinforced Composite ◽  
Microcrack Density ◽  
Reinforced Composite ◽  
Photothermal Deflection

A new methodology for mapping thermal diffusivity using a photothermal deflection method is introduced. Two case studies are made: fiber-reinforced composite structures and contact damage zones in alumina. In the former, characterization of thermal microstructural features is demonstrated; in the latter, microcrack density is quantified. Experimental data are analyzed and compared with literature results. Advantages and limitations of the technique are discussed.

Thermophysical characterization of artificially aged papers by means of the photothermal deflection technique

1999 ◽  
Vol 85 (5) ◽  
pp. 2881-2887 ◽  
Author(s):  
M. Bertolotti ◽  
S. Ligia ◽  
G. Liakhou ◽  
R. Li Voti ◽  
S. Paoloni ◽  
...  
Keyword(s):  
Photothermal Deflection ◽  
Thermophysical Characterization

scholarly journals Characterization Of Thermally Stable Dye-Doped Polyimide Based Electrooptic Materials

1993 ◽  
Vol 328 ◽  
Author(s):  
Michael B. Meinhardt ◽  
Paul A. Cahill ◽  
Carl H. Seager ◽  
Allyson J. Beuhler ◽  
David A. Wargowski
Keyword(s):  
Dye Degradation ◽  
Curing Process ◽  
Polyimide Films ◽  
Scanning Calorimetry ◽  
Thermal Stabilities ◽  
Photothermal Deflection Spectroscopy ◽  
Dye Aggregation ◽  
Donor Acceptor ◽  
Photothermal Deflection

ABSTRACTPreparation and characterization of novel dye-doped polyimide films for electrooptics is described. Thermal stabilities of donor-acceptor 2,5-diaryl oxazoles were evaluated by differential scanning calorimetry. Absorptive losses in thin films of Ultradel 9000D® doped with donor-acceptor oxazoles were measured by photothermal deflection spectroscopy. Absorptive losses at high doping levels may be explainable by dye-dye aggregation or dye degradation during the curing process. Lower doping levels, however, show losses of ≤ 3.0 dB/cm at 830 nm and ≤ 2.4 dB/cm at 1320 nm.

Thermal characterization of Li-ion cell electrodes by photothermal deflection spectroscopy

2016 ◽  
Vol 325 ◽  
pp. 104-115 ◽  
Author(s):  
André Loges ◽  
Sabrina Herberger ◽  
Daniel Werner ◽  
Thomas Wetzel
Keyword(s):  
Thermal Characterization ◽  
Photothermal Deflection Spectroscopy ◽  
Li Ion ◽  
Photothermal Deflection

Theoretical Adjustment of Necessary Conditions for Enhancing Figure of Merit of Thin Thermoelectric Layers

2017 ◽  
Vol 139 (9) ◽  
Author(s):  
Taher Ghrib ◽  
Munirah Abdullah Almessiere ◽  
Amal Lafy Al-Otaibi ◽  
Sami Brini ◽  
Radhouane Chtourou
Keyword(s):  
Figure Of Merit ◽  
Diffusion Length ◽  
Necessary Conditions ◽  
Preparation Process ◽  
Experimental Conditions ◽  
Simple Method ◽  
Thermal Properties Of Materials ◽  
Properties Of Materials ◽  
Photothermal Deflection

This work presents a simple method based on electrical and thermal properties of materials. It permits researchers, in the field of manufacturing and characterization of thin and thick films in solid state to take appropriate experimental conditions before the preparation process. The calculation of the thermal diffusion length, its comparison with thicknesses of the substrate, the thin layer deposited on the substrate, the use of photothermal deflection technique, and the Cahill's law permit to highlight the necessary conditions that allow researchers to manufacture samples with high thermoelectric power such as the required thickness, electric conductivity, and thermal conductivity.

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