Size effects in the structural phase transition of<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant="normal">VO</mml:mi></mml:mrow><mml:mrow><mml:mn>2</mml:mn></mml:mrow></mml:msub></mml:mrow></mml:math>nanoparticles

López, René; Haynes, T. E.; Boatner, L. A.; Feldman, L. C.; Haglund, Richard F.

doi:10.1103/physrevb.65.224113

Cited by 341 publications

(192 citation statements)

References 23 publications

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“…[17,18,34] In addition, the heterogeneous phase transition in these crystals occurs from the end surfaces and proceeds with phase boundary motion. [33] This is different from the recent report by Lopez et al, [24] where MIT is initiated by heterogeneous nucleation at extrinsic defect sites within the crystal.…”

contrasting

confidence: 53%

“…[21,24] These authors postulated that the defects in VO2 nano-particles can act as nucleation sites for the phase transition.…”

mentioning

confidence: 99%

“…the Gibbs free energy difference per unit volume between metal and insulator phases. [24,37] If we further assume that phase transition occurs when F had the same (or most probable) probability regardless of size in Figure 2b, . From this analysis, the hysteresis is expected to increase with the decrease of the crystal width.…”

mentioning

confidence: 99%

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Controlling the Temperature and Speed of the Phase Transition of VO₂ Microcrystals

Yoon

Kim

Chen

et al. 2016

ACS Appl. Mater. Interfaces

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We investigate the control of two important parameters in VO2 crystals -the temperature and speed of phase transition -by varying the crystal size. By decreasing the width of the square cylinder-shaped microcrystals from ~80 to ~1 μm, the phase transition temperature varies as much as 26.1 °C (19.7 °C) during heating (cooling) while the phase transition speed increases by a factor of 37 from 4.6 × 10 2 to 1.7 × 10 4 μm/s. The interplay between phase transition temperature and size of VO2 microcrystals can be explained through the statistical behavior of first-order phase transition and size dependent thermal dissipation effect.

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contrasting

confidence: 53%

“…[21,24] These authors postulated that the defects in VO2 nano-particles can act as nucleation sites for the phase transition.…”

mentioning

confidence: 99%

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Controlling the Temperature and Speed of the Phase Transition of VO₂ Microcrystals

Yoon

Kim

Chen

et al. 2016

ACS Appl. Mater. Interfaces

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“…One should mention that recent femtosecond laser investigations have been carried out to study the dynamic response of the VO 2 refractive index as well to measure the structural transition duration which was found to occur within Ϸ500 fs (45)(46). Such an ultrafast change in complex refractive index with temperature should enable ultra-fast optical switching devices based on VO 2 (47).…”

Section: Elocal Eincidentmentioning

confidence: 99%

Surface Plasmon Resonance Tunability in Au−VO2 Thermochromic Nano-composites

Mâaza

Nemraoui²,

Sella

et al. 2005

Gold Bull

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A new type of photo-active nano-composite material appropriate for Ultra-fast Nonlinear Optical (3) ( ) applications has been synthesized and optically characterized. Compared to standard noble metal particles-oxide nano-composites exhibiting a superior effective (3) ( ) due to the enhancement of the local electric field, these Au-VO 2 nano-composites display an additional reversibly tunable surface plasmon frequency under external temperature stimuli. Such a smart plasmon tunability is correlated to the Mott's type semiconducting/metallic 1st order transition of the host VO 2 matrix. The nano-gold surface plasmon wavelength shifts reversibly from 645 nm to 598nm when the Au-VO 2 nano-composites temperature varies from 25°C to 120°C.

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“…The origin of this behavior is rooted in the heterogeneous nature of the phase transition. Smaller precipitates show larger hysteresis due to the statistically small probability of finding a phasetransition nucleation site within a smaller nanoparticle volume [87].…”

Section: Smart Nanocompositesmentioning

confidence: 99%

Structure and Properties of Nanoparticles Formed by Ion Implantation

Meldrum

López

Magruder

et al. 2009

Topics in Applied Physics

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Abstract. This chapter broadly describes the formation, basic microstructure, and fundamental optoelectronic properties of nanocomposites synthesized by ion implantation. It is not meant as a complete literature survey and by no means includes all references on a subject that has seen a considerable amount of research effort in the past 15 years. However, it should be a good starting point for those new to the field and in a concise way summarize the main lines of research by discussing the optical, magnetic, and "smart" properties of these nanoparticles and the dependence of these properties on the overall microstructure. The chapter concludes with an outlook for the future.

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Size effects in the structural phase transition ofVO2nanoparticles

Cited by 341 publications

References 23 publications

Controlling the Temperature and Speed of the Phase Transition of VO₂ Microcrystals

Controlling the Temperature and Speed of the Phase Transition of VO₂ Microcrystals

Surface Plasmon Resonance Tunability in Au−VO2 Thermochromic Nano-composites

Structure and Properties of Nanoparticles Formed by Ion Implantation

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Size effects in the structural phase transition ofVO2nanoparticles

Cited by 341 publications

References 23 publications

Controlling the Temperature and Speed of the Phase Transition of VO2 Microcrystals

Controlling the Temperature and Speed of the Phase Transition of VO2 Microcrystals

Surface Plasmon Resonance Tunability in Au−VO2 Thermochromic Nano-composites

Structure and Properties of Nanoparticles Formed by Ion Implantation

Contact Info

Product

Resources

About

Controlling the Temperature and Speed of the Phase Transition of VO₂ Microcrystals

Controlling the Temperature and Speed of the Phase Transition of VO₂ Microcrystals