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Keywords: thermal conductivity
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Proceedings Papers

Proc. ASME. MNHMT2019, ASME 2019 6th International Conference on Micro/Nanoscale Heat and Mass Transfer, V001T09A004, July 8–10, 2019
Publisher: American Society of Mechanical Engineers
Paper No: MNHMT2019-4029
... Abstract Polymers have been widely used due to low cost, light weight, chemical inertness and easy of processing. However, bulk polymers are usually considered as thermal insulators owing to their low thermal conductivity. In this paper, the 3D polyethylene (PE) structure based on knitting...
Proceedings Papers

Proc. ASME. MNHMT2019, ASME 2019 6th International Conference on Micro/Nanoscale Heat and Mass Transfer, V001T02A002, July 8–10, 2019
Publisher: American Society of Mechanical Engineers
Paper No: MNHMT2019-3980
..., Universidad de Santiago de Chile Santiago, Chile ABSTRACT The present work in nanofluids is focusing into using the electro- kinetic phenomenal occurring around nanoparticles immersed in a base fluid as a method to stabilize a nanofluid and enhance its thermal conductivity. The electro-kinetic physic...
Proceedings Papers

Proc. ASME. MNHMT2019, ASME 2019 6th International Conference on Micro/Nanoscale Heat and Mass Transfer, V001T10A001, July 8–10, 2019
Publisher: American Society of Mechanical Engineers
Paper No: MNHMT2019-3901
... to the variations of film thickness, distribution of temperature, and phonon transport frequency are all included in the physic based model. Phonon energy and effective thermal conductivity distributions are shown in the two-dimensional (2D) space. The spatial distributions of temperatures and thermal...
Proceedings Papers

Proc. ASME. MNHMT2019, ASME 2019 6th International Conference on Micro/Nanoscale Heat and Mass Transfer, V001T10A005, July 8–10, 2019
Publisher: American Society of Mechanical Engineers
Paper No: MNHMT2019-4087
... Abstract This work provides a molecular dynamics simulation of the thermal conductivity and viscosity of thin water film. The results show that the average normal thermal conductivity and viscosity of thin water film is about an order of magnitude lower than those of bulk water...
Proceedings Papers

Proc. ASME. MNHMT2019, ASME 2019 6th International Conference on Micro/Nanoscale Heat and Mass Transfer, V001T09A002, July 8–10, 2019
Publisher: American Society of Mechanical Engineers
Paper No: MNHMT2019-3911
... Abstract Due to the small size of low-dimensional materials, traditional experimental methods can hardly meet the requirements of accurate measurement. This paper presented a method for measuring the thermal conductivity of low-dimensional materials based on DC heating. This method adopted...
Proceedings Papers

Proc. ASME. MNHMT2013, ASME 2013 4th International Conference on Micro/Nanoscale Heat and Mass Transfer, V001T10A007, December 11–14, 2013
Publisher: American Society of Mechanical Engineers
Paper No: MNHMT2013-22269
... thermal contact condition when the thermal pulse propagates towards a substrate material with low thermal conductivity value. The results also indicate that the thermo-physical properties of substrate material have more pronounced effects on the temperature distributions than heat flux and temperature...
Proceedings Papers

Proc. ASME. MNHMT2012, ASME 2012 Third International Conference on Micro/Nanoscale Heat and Mass Transfer, 283-290, March 3–6, 2012
Publisher: American Society of Mechanical Engineers
Paper No: MNHMT2012-75049
... extraordinarily high thermal conductivity along the heat transport direction, and controllable stiffness to conform to surfaces with different roughness and hardness, greatly improving the overall heat transfer performance. In addition, vertically connected solder layers can lock the graphite layers in place...
Proceedings Papers

Proc. ASME. MNHMT2009, ASME 2009 Second International Conference on Micro/Nanoscale Heat and Mass Transfer, Volume 2, 483-486, December 18–21, 2009
Publisher: American Society of Mechanical Engineers
Paper No: MNHMT2009-18008
... University, Nanjing, China 211189 ABSTRACT Monte Carlo model is used to study the roughness effects on lattice thermal conductivity of silicon nanowires. Based on the Matthiessen s rule, a roughness influence coefficient is adopted to amend the relaxation time. Individual silicon nanowires growing by vapour...
Proceedings Papers

Proc. ASME. MNHMT2009, ASME 2009 Second International Conference on Micro/Nanoscale Heat and Mass Transfer, Volume 2, 383-389, December 18–21, 2009
Publisher: American Society of Mechanical Engineers
Paper No: MNHMT2009-18076
... This paper has experimentally studied thermal conductivity measurement accuracy of unconsolidated porous media with a Hot Disk thermal constant analyzer and water distribution and evolution at pore scale by a Charge Coupled Device (CCD) combined with a microscope. It found that thermal...
Proceedings Papers

Proc. ASME. MNHMT2009, ASME 2009 Second International Conference on Micro/Nanoscale Heat and Mass Transfer, Volume 2, 507-511, December 18–21, 2009
Publisher: American Society of Mechanical Engineers
Paper No: MNHMT2009-18063
... Thermal conductivity of (5,5) and (3,3) carbon nanotubes with Stone-Wales (SW) defects is investigated by molecular dynamics simulation. Non-equilibrium molecular dynamics method is employed and the reactive empirical bond order potential is chosen. In the simulation, the temperature difference...
Proceedings Papers

Proc. ASME. MNHMT2009, ASME 2009 Second International Conference on Micro/Nanoscale Heat and Mass Transfer, Volume 3, 111-117, December 18–21, 2009
Publisher: American Society of Mechanical Engineers
Paper No: MNHMT2009-18182
... is not very high. The heat flux in carbon nanotubes (CNTs) may be as high as 10 12 W/m 2 . In this case Fourier’s law no longer holds. However, what is estimated through the ratio of the heat flux to the temperature gradient by MD simulations or experiments is only the apparent thermal conductivity (ATC...
Proceedings Papers

Proc. ASME. MNHMT2009, ASME 2009 Second International Conference on Micro/Nanoscale Heat and Mass Transfer, Volume 3, 279-282, December 18–21, 2009
Publisher: American Society of Mechanical Engineers
Paper No: MNHMT2009-18414
...MNHMT2009-18414 THE INFLUENCE OF EDGE STRUCTURE ON THE THERMAL CONDUCTIVITY OF GRAPHENE Kedong Bi, Yunfei Chen, Yujuan Wang, Minhua Chen School of Mechanical Engineering and Jiangsu Key Laboratory for Design and Manufacture of Micro-Nano Biomedical Instruments, Southeast University, Nanjing, 211189...
Proceedings Papers

Proc. ASME. MNHMT2009, ASME 2009 Second International Conference on Micro/Nanoscale Heat and Mass Transfer, Volume 3, 643-652, December 18–21, 2009
Publisher: American Society of Mechanical Engineers
Paper No: MNHMT2009-18553
..., while others report no enhancement or a deleterious effect on heat transfer when applying nanoparticles in the working fluids. In the current work, the thermal conductivity and kinematic viscosity of aqueous alumina nanofluids are measured at concentrations of 0 vol%, 0.05 vol%, 0.5 vol%, 1 vol...
Proceedings Papers

Proc. ASME. MNHMT2009, ASME 2009 Second International Conference on Micro/Nanoscale Heat and Mass Transfer, Volume 3, 231-236, December 18–21, 2009
Publisher: American Society of Mechanical Engineers
Paper No: MNHMT2009-18339
... We theoretically find that embedding silicide nanoparticles in Si x Ge 1- x alloys is able to considerably improve the figure of merit ( ZT ). We have computed the thermal conductivity as a function of the sizes of NiSi 2 and CoSi 2 nanoparticles. We find that the optimal nanoparticle...
Proceedings Papers

Proc. ASME. MNHMT2009, ASME 2009 Second International Conference on Micro/Nanoscale Heat and Mass Transfer, Volume 3, 125-129, December 18–21, 2009
Publisher: American Society of Mechanical Engineers
Paper No: MNHMT2009-18208
... Equilibrium molecular dynamics method is performed to calculate the lattice thermal conductivities of solid argon doped with krypton in different geometrical distributions. The effects of centralization doping, monolayer doping, uniform doping, non-uniform doping, random doping and cubic pattern...
Proceedings Papers

Proc. ASME. MNHMT2009, ASME 2009 Second International Conference on Micro/Nanoscale Heat and Mass Transfer, Volume 3, 483-487, December 18–21, 2009
Publisher: American Society of Mechanical Engineers
Paper No: MNHMT2009-18410
...) at the cooling rate of 20°C/min and warming rate of 10°C/min. The change of density of above solutions with temperature was determined by using a straw that can reveal the volume change of solutions. The thermal conductivity was calculated based on the experimental data. A device that can be used to measure...
Proceedings Papers

Proc. ASME. MNHMT2009, ASME 2009 Second International Conference on Micro/Nanoscale Heat and Mass Transfer, Volume 1, 461-466, December 18–21, 2009
Publisher: American Society of Mechanical Engineers
Paper No: MNHMT2009-18177
... by using polyoxyethylene lauryl ether and polyoxyethylene sorbitan monolaurate as surfactant. To stabilize the nanoemulsions in a strong electrolyte, polymeric stabilizer (gum Arabic) is used as a steric stabilizer. The droplet size and the thermal conductivity of binary nanoemulsions are measured...
Proceedings Papers

Proc. ASME. MNHMT2009, ASME 2009 Second International Conference on Micro/Nanoscale Heat and Mass Transfer, Volume 1, 591-598, December 18–21, 2009
Publisher: American Society of Mechanical Engineers
Paper No: MNHMT2009-18445
... 18 10 2010 Nanofluids have attracted increasing interest for more than a decade. A number of studies have demonstrated that nanofluids presented intriguing heat transfer enhancement performances. We produced a series of nanofluids and measured their thermal conductivities. The most...
Proceedings Papers

Proc. ASME. MNHMT2009, ASME 2009 Second International Conference on Micro/Nanoscale Heat and Mass Transfer, Volume 1, 599-605, December 18–21, 2009
Publisher: American Society of Mechanical Engineers
Paper No: MNHMT2009-18464
... 18 10 2010 The aim of this study is to understand the temperature and viscosity effects on the thermal conductivity of ferro-nanofluid. The base-fluid of ferro-nanofluid is made of polydimethyl-siloxane (PDMS) and diesel fuel which have similar thermal property but different viscosity...
Proceedings Papers

Proc. ASME. MNHMT2009, ASME 2009 Second International Conference on Micro/Nanoscale Heat and Mass Transfer, Volume 1, 555-560, December 18–21, 2009
Publisher: American Society of Mechanical Engineers
Paper No: MNHMT2009-18406
.... The statistical analysis indicates that the Brownian motion of nanoparticles play important role in thermal properties of the copper nanofluids. Including the Brownian motion, the thermal conductivity of the copper nanofluids is calculated. Copper nanofluids Speckle Statistical analysis Brownian motion...