Thermal conductivity coefficients of water and heavy water in the liquid state up to 370.degree.C

Neindre, B. Le; Bury, P.; Tufeu, R.; Vodar, B.

doi:10.1021/je60070a018

Cited by 20 publications

(10 citation statements)

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“…where Q abs is the absorbed/dissipated power and k(T s ) the thermal conductivity of heavy water. 25 Solving this equation for the surface temperature, T s gives a analytical approximation which is in a good agreement with the full numerical model using COMSOL R (Fig. 3b).…”

Section: Resultssupporting

confidence: 64%

Rotational Dynamics and Heating of Trapped Nanovaterite Particles

et al. 2016

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We synthesise, optically trap and rotate individual nanovaterite crystals with a mean particle radius of 423 nm. Rotation rates of up to 4.9 kHz in heavy water are recorded. Laser-induced heating due to residual absorption of the nanovaterite particle results in the superlinear behaviour of the rotation rate as a function of trap power. A finite element method based on the Navier-Stokes model for the system allows us to determine the residual optical absorption coefficient for a trapped nanovaterite particle. This is further confirmed by the theoretical model. Our data show that the translational Stokes drag force and rotational Stokes drag torque needs to be modified with appropriate correction factors to account for the power dissipated by the nanoparticle.

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Section: Resultssupporting

confidence: 64%

Rotational Dynamics and Heating of Trapped Nanovaterite Particles

et al. 2016

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“…13 At the same time, temperature may play a role as the thermal conductivity coefficient of liquid D 2 O is larger than of H 2 O. 34 This should assist heat dissipation and may contribute to our observation as usually gas solubility (H 2 or D 2 ) decreases as temperature increases. 33 In addition to bulk effects, surface effects may contribute to our observations.…”

Section: Discussionmentioning

confidence: 86%

Longer-Lasting Electron-Based Microscopy of Single Molecules in Aqueous Medium

et al. 2018

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Use of electron-based microscopy in aqueous media has been held back because aqueous samples tend to suffer from water radiolysis and other chemical degradation caused by the high energy of incident electrons. Here we show that aqueous liquid pockets in graphene liquid cells at room temperature display significantly improved stability when using deuterated water, DO. Reporting transmission electron microscopy (TEM) experiments based on common imaging conditions, we conclude that use of DO outperforms adding radical scavengers to HO regardless of imaging details; it increases the lifetime of dissolved organic macromolecules by a factor of 2-5, and it delays by even longer the appearance of radiolysis-induced bubbles, by a factor of time up to 10. We quantify statistically the consequences of minimizing the electron voltage and dose and conclude that the DO environment increases sample longevity without noticeable sacrifice of contrast that is critical for direct imaging of weakly scattering organic macromolecules and biomolecules.

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“…Heat transfer by laminar convection in a vertical coaxial cylinder cell will not significantly involve the emitter if the conductivity gap is sufficiently extended in each direction by long guards. Such equipment has been used by Ziebland [12], and Johannin, Le Neindre and other workers at the Laboratoire des Hautes Pressions of the eNRS at Bellevue, France [13,14]. A large fraction of thermal conductivity measurements at high density, however, have been reported for equipment for which neither adequate experimental precautions nor appropriate treatment of data were used.…”

Section: Discussionmentioning

confidence: 99%

Thermal conductivity of gases. III. Some values of thermal conductivities of argon, helium, and nitrogen from 0 C to 75 C at pressures of 1 x 10^5 to 2.5 x 10^7 pascals

Guildner¹

1975

J. RES. NATL. BUR. STAN. SECT. A.

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Acc urate meas ureme nts of th e t herm al co ndu c ti viti e.s of Ar an d He ag ree with th e th eor.e ti cal va lu e of 2.51>7)c,. (7) = viscos it y, c,. =s pec i/l c hea t ca pacit y a t co ns ta nt vo lum e 1> is a nu m~e r s hghtl y gre ate r th a n 1 de pe ndin g u po n th e inte rm olec ul ar pote nti a l). Me as u!·e m e nts of th e the r ma l co nd~c.ti viti es of N, at 9.6 a nd 75°C as a fu ncti on of press ure up to 2.53 X 10' Pa help to app raIse th e va lt d lt y of o th e r meas ure me nt s of th e th e rm al co nd uc ti viti es of de nse gases. T he excess co nd uctI VIt y of nItroge n (th e ad diti o na l co nd uc ti vity resu ltin g fro m press ure) is s hown to be a fun c ti o n of o nl y th e de ns ity of th e nitroge n fro m 0 to 700 °C a nd pre ss ures u p to 1.3 X 10 8 P a.... . Key wo rd s : Ex cess th e rma l co nd ucti vit y of N2; th e rm a l co ndu ctI VIt y of Ar; th e r ma l co nd uc ll vlt y of He; th e rm a l co nd uc ti vit y of N,.

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Thermal conductivity coefficients of water and heavy water in the liquid state up to 370.degree.C

Cited by 20 publications

References 4 publications

Rotational Dynamics and Heating of Trapped Nanovaterite Particles

Rotational Dynamics and Heating of Trapped Nanovaterite Particles

Longer-Lasting Electron-Based Microscopy of Single Molecules in Aqueous Medium

Thermal conductivity of gases. III. Some values of thermal conductivities of argon, helium, and nitrogen from 0 C to 75 C at pressures of 1 x 10^5 to 2.5 x 10^7 pascals

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