Size effect of the thermal expansion of nanostructural copper oxide

Krynetskiĭ, I. B.; Gizhevskiĭ, B. A.; Наумов, С. В.; Козлов, Е. А.

doi:10.1134/s1063783408040264

Cited by 32 publications

(24 citation statements)

References 3 publications

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“…However, for some materials, the α p (N) value may decrease with an isothermal decrease in N at low temperatures. Perhaps specifically this situation was found in [2].…”

Section: On Nanocrystal Thermodynamicsmentioning

confidence: 82%

“…temperature at constant v and N values, the specific entropy and the product of the thermal expansion coefficient and the isothermal elastic modulus can be written as [6] , (2) (…”

Section: On Nanocrystal Thermodynamicsmentioning

confidence: 99%

“…Here, V is the system volume, T is temperature, and P is pressure. At the same time, it is known that, under certain conditions, the B T value of some materials increases [3] and the α p value decreases [2] with a decrease in the nanocrystal size. This dual behavior of the above functions has not been explained yet, which is due to the absence of analytical expressions describing the isothermal dependences of the functions B T and α p on both the nanocrystal size and shape at different temperatures.…”

Section: Introductionmentioning

confidence: 99%

“…It is known from experimental studies that the isothermal elastic modulus B T = -V(∂P/∂V) T decreases with a decrease in the nanocrystal size [1], whereas the isobaric thermal expansion coefficient α p = [∂ln(V)/∂T] P increases [2]. Here, V is the system volume, T is temperature, and P is pressure.…”

Section: Introductionmentioning

confidence: 99%

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On dependences of the thermoelastic properties on size and shape of an iron nanocrystal

Magomedov

2015

Nanotechnol Russia

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Dependences of the elastic modulus (B T ), Poisson ratio (μ), thermal expansion coefficient (α p ), and specific heat (c v and c p ) on the size and shape of the simple matter nanocrystal with a free surface have been studied using the model of nanocrystal in the form of a rectangular parallelepiped with a variable surface shape (RP model). Specific calculations have been carried out for bcc iron. It is shown that the elastic modulus decreases with an isomorphic (at a constant nanocrystal shape) decrease in the nanocrystal size (number N of atoms), whereas the functions μ(N), α p (N), c v (N), c p (N), and c p (N)-c v (N) increase along the isotherm. The larger the deviation of the nanocrystal shape is from the most energetically stable form (cube for the RP model), the more noticeably the change in these functions is with a decrease in nanocrystal size along the isotherm. It is shown that the size compression of the lattice parameter for a bcc iron nanocrystal increases with a decrease in the nanocrystal size, with a decrease in temperature, or with an increase in the nanocrystal shape deviation from the most energetically stable form.

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“…However, for some materials, the α p (N) value may decrease with an isothermal decrease in N at low temperatures. Perhaps specifically this situation was found in [2].…”

Section: On Nanocrystal Thermodynamicsmentioning

confidence: 82%

“…temperature at constant v and N values, the specific entropy and the product of the thermal expansion coefficient and the isothermal elastic modulus can be written as [6] , (2) (…”

Section: On Nanocrystal Thermodynamicsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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On dependences of the thermoelastic properties on size and shape of an iron nanocrystal

Magomedov

2015

Nanotechnol Russia

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“…CuO nanoparticles exhibit unique optical, electrical, and magnetic properties based on the effects of grain size and quantum dots size as the surface contribution becomes dominant [16][17][18][19] . Positron annihilation spectroscopy (PAS) has been used as a sensitive probe to characterize surface and interface defects in nanoctystalline metals [20][21][22] and semiconductor nanoparticles [23][24][25] .…”

Section: Introductionmentioning

confidence: 99%

Positron Annihilation Spectroscopy Study on Annealing Effect of CuO Nanoparticles

et al. 2016

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Sub‐Diffraction Correlation of Quantum Emitters and Local Strain Fields in Strain‐Engineered WSe₂ Monolayers

Xu,

Vong,

Utama

et al. 2024

Advanced Materials

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Strain‐engineering in atomically thin metal dichalcogenides is a useful method for realizing single‐photon emitters (SPEs) for quantum technologies. Correlating SPE position with local strain topography is challenging due to localization inaccuracies from the diffraction limit. Currently, SPEs are assumed to be positioned at the highest strained location and are typically identified by randomly screening narrow‐linewidth emitters, of which only a few are spectrally pure. In this work, hyperspectral quantum emitter localization microscopy is used to locate 33 SPEs in nanoparticle‐strained WSe2 monolayers with sub‐diffraction‐limit resolution (∼30 nm) and correlate their positions with the underlying strain field via image registration. In this system, spectrally pure emitters are not concentrated at the highest strain location due to spectral contamination; instead, isolable SPEs are distributed away from points of peak strain with an average displacement of 240 nm. These observations point toward a need for a change in the design rules for strain‐engineered SPEs and constitute a key step toward realizing next‐generation quantum optical architectures.This article is protected by copyright. All rights reserved

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Size effect of the thermal expansion of nanostructural copper oxide

Cited by 32 publications

References 3 publications

On dependences of the thermoelastic properties on size and shape of an iron nanocrystal

On dependences of the thermoelastic properties on size and shape of an iron nanocrystal

Positron Annihilation Spectroscopy Study on Annealing Effect of CuO Nanoparticles

Sub‐Diffraction Correlation of Quantum Emitters and Local Strain Fields in Strain‐Engineered WSe₂ Monolayers

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Size effect of the thermal expansion of nanostructural copper oxide

Cited by 32 publications

References 3 publications

On dependences of the thermoelastic properties on size and shape of an iron nanocrystal

On dependences of the thermoelastic properties on size and shape of an iron nanocrystal

Positron Annihilation Spectroscopy Study on Annealing Effect of CuO Nanoparticles

Sub‐Diffraction Correlation of Quantum Emitters and Local Strain Fields in Strain‐Engineered WSe2 Monolayers

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Sub‐Diffraction Correlation of Quantum Emitters and Local Strain Fields in Strain‐Engineered WSe₂ Monolayers