IR characterization of graphite black-coating for cryogenic detectors

Mellouki, I.; Bennaji, N.; Yacoubi, N.

doi:10.1016/j.infrared.2006.05.002

Cited by 34 publications

(18 citation statements)

References 17 publications

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“…The  T of PU composite with 50 wt% CNP incorporation was 0.86. The decrease seems to be caused by an increase in thermal reflectance from the graphite-like quasi-crystalline domains while thermal transmission decreased to nearly zero at 2 wt % CNP as shown in equation 2 [9,10]:…”

Section: Resultsmentioning

confidence: 99%

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Nanostructured solar irradiation control materials for solar energy conversion

et al. 2013

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Tailoring the solar absorptivity ( s ) and thermal emissivity ( T ) of materials constitutes an innovative approach to solar energy control and energy conversion. Numerous ceramic and metallic materials are currently available for solar absorbance/thermal emittance control. However, conventional metal oxides and dielectric/metal/dielectric multi-coatings have limited utility due to residual shear stresses resulting from the different coefficient of thermal expansion of the layered materials. This research presents an alternate approach based on nanoparticle-filled polymers to afford mechanically durable solar-absorptive and thermally-emissive polymer nanocomposites. The  s and  T were measured with various nano inclusions, such as carbon nanophase particles (CNPs), at different concentrations. Research has shown that adding only 5 wt% CNPs increased the  s and  T by a factor of about 47 and 2, respectively, compared to the pristine polymer. The effect of solar irradiation control of the nanocomposite on solar energy conversion was studied. The solar irradiation control coatings increased the power generation of solar thermoelectric cells by more than 380% compared to that of a control power cell without solar irradiation control coatings.

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Section: Resultsmentioning

confidence: 99%

“…In addition, due to delocalization of  electrons, CNPs present unique reflectance, absorbance, and transmittance properties against electromagnetic waves. CNPs exhibit uniquely high  s and  T accordingly [9,10].…”

Section: Introductionmentioning

confidence: 99%

Nanostructured solar irradiation control materials for solar energy conversion

et al. 2013

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“…These include metallic thin films [2], quarter wavelength resonant cavities [3], metal blacks [4]- [6], carbon or graphite blacks [7], [8], and nanostructured metamaterials [9]. While good IR absorption characteristics have been obtained following these approaches, the reported IR absorbers are either temperature unstable, have a narrow absorption spectrum, or need to be deposited in a thick film to achieve high absorption.…”

Section: Theorymentioning

confidence: 99%

A Thin-Film Infrared Absorber using CNT/Nanodiamond Nanocomposite

Sui

Gokhale

Shenderova³

et al. 2012

MRS Proc.

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This paper reports on the fabrication and characterization of thin-film nanocomposites comprised of tangled carbon nanotubes in a polymer matrix. The density of nanotubes in the polymer was significantly increased using detonation nanodiamonds. Nanodiamonds reduce the surface forces between the polymer and the nanotubes and mitigate the agglomeration problem of nanotubes in polymer. This resulted in thinner, more uniform networks that serve as efficient absorbers of infrared energy over a broad spectrum, ranging from the visible to the midwavelength infrared. An infrared absorbance of 97% was achieved for a 1.6 µm thick nanocomposite film across the spectral range of 714 nm to 5 µm. The films are electrically insulating, mechanically and thermally stable up to 300 ˚C, and can be integrated with microbolometers to enhance their responsivity.

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“…A similar strategy we adopted to heat one end of the aluminum oscillator by facing it to an infrared heater. Since we need to guarantee good coupling even below 6 µm to cover the emission spectrum of the source, in this case we used a different surface treatment and sprayed a graphite black-coating [6,7] on the portion of the oscillator surface facing the source.…”

Section: The Experimental Setupmentioning

confidence: 99%