Published in Nanotechnology
The thermal conductivities of pristine and defective single-layer tungsten diselenide (WSe2) are investigated by using equilibrium molecular dynamics method. The thermal conductivity of WSe2 increases dramatically with size below a characteristic of ~5 nm and levels off for broader samples and reaches a constant value of ~2 W/mK. By introducing ato...
Published in Journal of hazardous materials
The use of aerogels to selectively recover oil from oily wastewater is effective but challenging. In this study, a new carboxylated carbon nanotube/chitosan aerogel (CCNT/CA) with switchable wettability was developed as a smart adsorbent for fast oil absorption and oil recovery. Vinyltrimethoxysilane and thermoresponsive poly(N-isopropylacrylamide)...
This study examines the interacting influence of different pore structure parameters on the thermal conductivity of porous building blocks with pores of micrometer and nanometer magnitudes. A first exploratory study varies the pore structure parameters over a wide spectrum, and reveals that total porosity and matrix conductivity are most dominant. ...
The objective of this research is to examine how ultrasonication time affects agglomeration, stability, thermal conductivity, and viscosity of CuO nanofluid. Using different reaction conditions, distinct shaped CuO nanoparticles are synthesised and dispersed in an EG: DW (70:30) ratio with 0.3 vol%. Microscopic and TEM images are used to analyze co...
Published in Journal of molecular modeling
The structural properties and thermal conductivity of graphene-based SiC heterostructures are investigated using the reverse nonequilibrium molecular dynamics. The C/SiC/C heterostructure has the greatest value of cohesive energy due to the effect of vdW interactions between layers. The surfaces of heterostructures begin to ripple as a direct conse...
Published in Journal of clinical medicine
Sleep bruxism (SB), snoring, and excessive daytime sleepiness are often associated with obstructive sleep apnea (OSA). OSA, which is characterized by a repetitive collapse of the upper airway during sleep, can cause oxygen desaturation and lead to adverse medical conditions, such as cardiovascular events, hypertension, heart attack, and stroke. In ...
This study explores the potentialities of Scanning Thermal Microscopy (SThM) technique as a tool for measuring thermal transporting properties of carbon-derived materials issued from thermal conversion of organic polymers, such as the most commonly known polyimide (PI), Kapton. For quantitative measurements, the Null Point SThM (NP-SThM) technique ...
Published in Applied Physics A
Heusler-type Fe2V0.90+xTa0.10Al1−x alloys have been processed by high-pressure torsion (HPT) to improve the thermoelectric performance via a significant decrease in thermal conductivity. Before HPT processing, the x = 0.08 alloy (Fe2V0.98Ta0.10Al0.92) has a thermal conductivity of 6.0 W m−1 K−1 at 300 K and a dimensionless figure of merit up to ZT ...
Published in International Journal of Materials Research
Der Beitrag beschreibt das Potential und wesentliche Einflussgrößen von thermisch leitfähig modifizierten Thermoplasten, die als Funktionskunststoffe zur direkten Wärmezu- und -abfuhr beispielsweise im Spritzgießverfahren zu komplexen Bauteilen geformt bzw. darin lokal integriert werden können. Durch eine gezielte Zugabe sehr gut wärmeleitender met...
Published in Measurement Science and Technology
Studying the thermo-optical properties of construction materials (i.e. thermal conductivity, optical reflectance, optical transmittance, and optical absorbance) is essential for improving human comfort within a building. Typically, these properties are measured independently using specific equipment. The emergence of new innovative construction str...
