thermal conductivity of bismuth telluride nanowire array epoxy composite

... ZT value of the nanowire, ␬mis the thermal conductivity of the matrix,␬nwis thermal conductivity of the nanowire, and fnwis the volumeﬁlling fraction of the nanowires in the composite. ... Nanotechnology CenterBirck and NCN PublicationsPurdue Libraries Year 2009 Thermal conductivity of bismuth telluride nanowire array- epoxy composite Kalapi G. Biswas∗Timothy D. Sands†Baratunde Cola‡Xianfan ... detrimental effects of the matrix, the nanowire volumefraction should be maximized and the thermal conductivity of the matrix should be minimized.If the lattice thermal conductivity of the nanowire can...

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thermal conductivity of bismuth telluride nanowire array epoxy composite

... ZT value of the nanowire, ␬mis the thermal conductivity of the matrix,␬nwis thermal conductivity of the nanowire, and fnwis the volumeﬁlling fraction of the nanowires in the composite. ... Nanotechnology CenterBirck and NCN PublicationsPurdue Libraries Year 2009 Thermal conductivity of bismuth telluride nanowire array- epoxy composite Kalapi G. Biswas∗Timothy D. Sands†Baratunde Cola‡Xianfan ... detrimental effects of the matrix, the nanowire volumefraction should be maximized and the thermal conductivity of the matrix should be minimized.If the lattice thermal conductivity of the nanowire can...

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mode wise thermal conductivity of bismuth telluride

... 80% of thetotal lattice thermal conductivity. Figure 6(b) shows the contribu-tions to lattice thermal conductivity of different phonon wave-lengths, indicating that about 80% of the thermal conductivity ... Integration of the wholecylindrical disk to estimate the total thermal conductivity. Fig. 5 Inverse of lattice thermal conductivity obtained basedon Eq. (10) as a function of the inverse of simulation ... Phonon Transport in Bismuth Telluride, ” Phys. Rev.B, 77, p. 125209.[8] Qiu, B., and Ruan, X. L., 2009, “Molecular Dynamics Simulations of Lattice Thermal Conductivity of Bismuth Telluride Using...

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thermomechanical and thermal contact characteristics of bismuth telluride films electrodeposited on carbon nanotube arrays

... CNT array porosity. However, solidsolutions of Bi2Te3or other classes of TE materials with reduced thermal conductivity might still beneﬁt from this strategy. Forexample, the thermal conductivity ... interfaceresistance was about 3% of the TE ﬁlm thermal resistance(0.23 K WÀ1, corresponding to a measured thermal conductivity of 1.5 W (m K)À1at 350 K). The higher thermal resistance at theTE/CNT/M/Si ... thermal interface resistances of CNT-TEsamples is $55% of the intrinsic resistance of the TE ﬁlm itself(0.55 K WÀ1, corresponding to a measured thermal conductivity of 1.8 W (m K)À1at 350 K)....

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growth of monoclinic wo3 nanowire array for highly

... under a pressure of 13–15 Torr with anair ﬂow of 200 sccm at a temperature of 1000C. Fig. 1 showstypical FESEM images of an as-synthesized nanowire array grown on Si substrate. Nanowires are ... temperature. The nanowire grew on top of WO3nanoparticle seed layers, forming a quasi-aligned nanowire array. The nanowires were single crystallinewith monoclinic structure. The nanowire array gas ... inﬂuence the nanowire array growth. The nanowire array was employed directly for gas sensor fabrication using photolithography.The gas sensing experiments revealed that the nanowire array sensors...

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measurement of in plane thermal conductivity of ultrathin films using micro raman spectroscopy

... scattering for reducing the in-plane thermal conductivity of Bi ﬁlms. The measured in-plane thermal conductivity value of the ∼20-nm ﬁlms, 11 W/mK, is close to those of the thickest Bi ﬁlms measured ... thein-plane thermal conductivity of Bi ﬁlms.Downloaded by [Purdue University] at 09:34 21 April 2014 IN-PLANE THERMAL CONDUCTIVITY 1910123456780 5 10 15 20 25 30 35In-plane Thermal Conductivity ... Klemens, Thermal Conductivity, TPRCDataSeries, Vol. 2, Plenum, New York, 1970.23. A.L. Moore, M.T. Pettes, F. Zhou, and L. Shi, Thermal Conductivity Suppression in Bismuth Nanowires, Journal of Applied...

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thermal conductivity of nanoparticle fluid mixture

... consideredaEffective thermal conductivity of the mixtureke, thermal conductivity of the  uidkf, ratio of thermal conductivity of particle to thermal conductivity o f  uid ®, and volumefraction of particles ... shows theratios of the thermal conductivity o f the mixtureketo the thermal conductivityof the correspondingbase  uidkf. For all of the  uids,the thermal conductivity of the mixture increases ... uids.Fig. 3a Thermal conductivity as a function of volume fraction of CuOpowders in ethylene glycol and water.Fig. 3b Thermal conductivity ratio as a function of volume fraction of CuO powders...

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thermal conductivity of nanoparticle fluid mixture

... consideredaEffective thermal conductivity of the mixtureke, thermal conductivity of the  uidkf, ratio of thermal conductivity of particle to thermal conductivity o f  uid ®, and volumefraction of particles ... shows theratios of the thermal conductivity o f the mixtureketo the thermal conductivityof the correspondingbase  uidkf. For all of the  uids,the thermal conductivity of the mixture increases ... uids.Fig. 3a Thermal conductivity as a function of volume fraction of CuOpowders in ethylene glycol and water.Fig. 3b Thermal conductivity ratio as a function of volume fraction of CuO powders...

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thermal conductivity of nanoparticle fluid mixture

... consideredaEffective thermal conductivity of the mixtureke, thermal conductivity of the  uidkf, ratio of thermal conductivity of particle to thermal conductivity o f  uid ®, and volumefraction of particles ... shows theratios of the thermal conductivity o f the mixtureketo the thermal conductivityof the correspondingbase  uidkf. For all of the  uids,the thermal conductivity of the mixture increases ... uids.Fig. 3a Thermal conductivity as a function of volume fraction of CuOpowders in ethylene glycol and water.Fig. 3b Thermal conductivity ratio as a function of volume fraction of CuO powders...

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Fabrication of a porous polyimide membrane using a silicon nanowire array as a template

... describe the preparation of a porous polyimide membrane using avertically oriented silicon nanowire (SiNW) array as a template. Sincethe diameters and densities of silicon nanowires can be controlled,polyimide ... silicon nanowire arrays as templates; (a) synthesis of silicon nanowires, (b) polyimide coating,(c) polyimide etching with O2plasma, and (d) silicon etching with XeF2. A schematic of a cross ... portions of nanowireswithout appreciably damaging the supporting polyimide. An SEMimage of the exposed portion is shown in Fig. 1c. Having exposed thenanowires, the Au nanoparticles at the nanowire...

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