Thermal characterization of surface-micromachined silicon nitride membranes for thermal infrared detectors

1997 ◽  
Vol 6 (1) ◽  
pp. 55-61 ◽  
Author(s):  
P. Eriksson ◽  
J.Y. Andersson ◽  
G. Stemme
Keyword(s):  
Silicon Nitride ◽  
Infrared Detectors ◽  
Thermal Characterization ◽  
Thermal Infrared

scholarly journals Processing and Characterization of Silicon Nitride Nanofiber Paper

2013 ◽  
Vol 2013 ◽  
pp. 1-7 ◽  
Author(s):  
Kei-Peng Jen ◽  
Ronald Warzoha ◽  
Ji Guo ◽  
Michael Tang ◽  
Sridhar Santhanam
Keyword(s):  
Silicon Nitride ◽  
Thermal Insulation ◽  
Reduction Process ◽  
Thermal Characterization ◽  
Nitride Phase ◽  
Mechanical Stiffness ◽  
Precursor Material ◽  
Processing Step

Papers of silicon nitride nanofibers were synthesized by a carbothermal reduction process. These nanofiber papers were synthesized in situ and did not require a secondary processing step. The process utilized silica nanopowders and silica gel as the precursor material. Processing geometry played a crucial role in regulating the growth of the nanofiber papers. Characterization of the nanofiber papers indicated that the nanofibers were of the alpha silicon nitride phase. Both mechanical stiffness and strength of the nanofiber papers were measured. Thermal conductivity and specific heat of the papers were also measured and were found to be lower than many common thermal insulation materials at much smaller thicknesses and were comparable to those values that are typically reported for carbon-nanotube-based buckypaper. Results of the mechanical and thermal characterization indicate that these silicon nitride nanofiber papers can be utilized for specialized thermal insulation applications.

Deposition and characterization of gold black coatings for thermal infrared detectors

2010 ◽  
Author(s):  
S. Ilias ◽  
P. Topart ◽  
C. Larouche ◽  
P. Beaupré ◽  
D. Gay ◽  
...  
Keyword(s):  
Infrared Detectors ◽  
Thermal Infrared

scholarly journals Integrated Approach for Detecting Convection Effects in Geothermal Environments Based on TIR Camera Measurements

2021 ◽  
Vol 11 (7) ◽  
pp. 3185
Author(s):  
Susana Del Pozo ◽  
Cristina Sáez-Blázquez ◽  
Ignacio Martín Nieto ◽  
Susana Lagüela
Keyword(s):  
Thermal Conductivity ◽  
Infrared Camera ◽  
Heat Rate ◽  
Thermal Characterization ◽  
Thermal Infrared ◽  
Integrated Approach ◽  
Geothermal System ◽  
Radiometric Calibration ◽  
Geothermal Systems

Thermal characterization of soils is essential for many applications, including design of geothermal systems. Traditional devices focus on the computation of thermal conductivity, omitting the analysis of the convection effect, which is important for horizontal geothermal systems. In this paper, a procedure based on the monitoring of the surface of the soil with a thermal infrared (TIR) camera is developed for the evaluation of the global thermal imbalance on the surface and in-depth. This procedure allows for the computation of thermal conductivity and global convection heat rate, consequently constituting a complete thermal characterization of the geothermal system. The validation of the results is performed through the evaluation of the radiometric calibration of the thermal infrared camera used for the monitoring and the comparison of the thermal conductivity values obtained in-depth, with traditional methods, and for the surface of the system.

Random pseudo promptings applied to the thermal characterization of a wet porous material

1999 ◽  
Vol 6 (1) ◽  
pp. 101-108 ◽  
Author(s):  
E. Delacre ◽  
D. Defer ◽  
E. Antczak ◽  
B. Duthoit
Keyword(s):  
Porous Material ◽  
Thermal Characterization

Photoacoustic thermal characterization of the dehydration process of Agar-SiO2emulsions

2005 ◽  
Vol 125 ◽  
pp. 177-180
Author(s):  
T. Lopez ◽  
M. Picquart ◽  
G. Aguirre ◽  
Y. Freile ◽  
D. H. Aguilar ◽  
...  
Keyword(s):  
Thermal Characterization ◽  
Dehydration Process
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