Thermodynamic state of the laser-induced liquid phase and position of the triple point of carbon

Kudryashov, S. I.; Карабутов, А.А.; Зоров, Н. Б.

doi:10.1070/mc1998v008n04abeh000961

Cited by 9 publications

(5 citation statements)

References 7 publications

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“…In the ps-LAL regime such effect could indicate expulsion of larger particles, while in the case of ns-LAL one can expect expulsion of even microdroplets, [46] apart from the accompanying small-size plasmamediated dissociation/recondensation products. [71] in ns-LAL plumes (Fig. 8(c)).…”

Section: (B) (A)mentioning

confidence: 97%

Quantitative evaluation of LAL productivity of colloidal nanomaterials: Which laser pulse width is more productive, ergonomic, and economic?

Nastulyavichus¹,

Смирнов²,

Kudryashov³

2022

Chinese Phys. B

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Near-IR (wavelength ≈ 1 μm) laser ablation of bulk, chemically-inert gold in water was compared for different laser pulsewidth in broad the range of 300 fs – 100 ns, comparing a number of key ablation characteristics: mass loss, single-shot crater volume and extinction coefficient of the generated colloidal solutions taken in the spectral ranges of interband transitions and localized plasmon resonance. Comparing to related air-based ablation results, at the given fluences laser ablation in the liquid resulted in the maximum ablation yield per unit energy and maximum NP yield per pulse and per unit energy for the picosecond lasers, occurring at subcritical peak pulse powers for laser self-focusing. The self-focusing effect was demonstrated to yield in incomplete, effectively weaker focusing in the water filaments of ultrashort laser pulses with supercritical peak powers, comparing to linear (geometrical) focusing at sub-critical peak powers. At the other, nanosecond-pulse extreme the high ablation yield per pulse, but low ablation yield per unit energy and low NP yield per pulse and per unit energy were related to strong ablation plasma screening, providing mass removal according to the well-established scaling relationships for plasma. Illustrative comparison of the ablation and nanoparticle generation efficiency versus the broad fs-ns laser pulsewidth range was enabled in terms of productivity, economicity and ergonomicity, using the proposed universal quantitative criteria.

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Section: (B) (A)mentioning

confidence: 97%

Quantitative evaluation of LAL productivity of colloidal nanomaterials: Which laser pulse width is more productive, ergonomic, and economic?

Nastulyavichus¹,

Смирнов²,

Kudryashov³

2022

Chinese Phys. B

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“…Multiplying the second equation of ( 6) on ψ and substituting (10) and ( 12) into it, we express ψ in terms of M and its derivatives,…”

Section: The Quintic Complex Ginzburg-landau Equationmentioning

confidence: 99%

“…At present methods for construction of special solutions of nonintegrable systems in terms of elementary (more precisely, degenerated elliptic) and elliptic functions are actively developed [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20] (see also [21] and references therein). Some of these methods are intended for the search for elliptic solutions only [11,15]; others allow us to find either solutions in terms of elementary functions only [2][3][4]20] or both types of solutions [1, 5-10, 12-14, 16-19].…”

Section: Introductionmentioning

confidence: 99%

Elliptic solutions of the quintic complex one-dimensional Ginzburg–Landau equation

Vernov¹

2007

J. Phys. A: Math. Theor.

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The Conte-Musette method has been modified for the search of only elliptic solutions to systems of differential equations. A key idea of this a priory restriction is to simplify calculations by means of the use of a few Laurent series solutions instead of one and the use of the residue theorem. The application of our approach to the quintic complex one-dimensional Ginzburg-Landau equation (CGLE5) allows us to find elliptic solutions in the wave form. We also find restrictions on coefficients, which are necessary conditions for the existence of elliptic solutions for the CGLE5. Using the investigation of the CGLE5 as an example, we demonstrate that to find elliptic solutions the analysis of a system of differential equations is more preferable than the analysis of the equivalent single differential equation.

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“…The triple-phase point of carbon is 3727 • C [21], and graphitized carbon materials generally exhibit good high-temperature performances and excellent conductivities. Singlelayer graphitic graphene, for instance, has a conductivity as high as 1 × 10 8 S/m.…”

Section: Introductionmentioning

confidence: 99%

Design and Numerical Study of Induction-Heating Graphitization Furnace Based on Graphene Coils

Li,

Zhang,

Chu

et al. 2024

Applied Sciences

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Induction-heating graphitization furnaces are widely used to produce high-purity graphite products due to their high heating rate, high-limit temperatures, safety, cleanliness, and precise control. However, the existing induction-heating systems based on copper coils have limited energy efficiency. This paper proposes a new induction-heating graphitization furnace based on graphene coils. Due to the excellent high-temperature resistance of the macroscopic graphene material, the coil can be placed closer to the graphite heater, which improves the electromagnetic efficiency; the coil itself does not need to pass cooling water, which reduces the heat loss of the furnace and ultimately results in a higher energy efficiency of the induction furnace. In this paper, a numerical model of the induction-heating process is established and verified, the temperature-field and electromagnetic-field distributions of the heating process are analyzed by using the model, and the energy balance calculations are performed for the original furnace and the new furnace. Through a comparison, it was found that the new furnace possesses an electromagnetic efficiency of 84.87% and a thermal efficiency of 20.82%, and it can reduce the energy consumption by 33.34%, compared with the original furnace. In addition, the influence of the coil parameters on the performance of the induction furnace is discussed. By changing the coil conductivity, the induction furnace can achieve an energy efficiency of 17.76%–18.11%. This study provides new ideas for the application of macroscopic graphene materials in high-temperature induction heating.

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Thermodynamic state of the laser-induced liquid phase and position of the triple point of carbon

Cited by 9 publications

References 7 publications

Quantitative evaluation of LAL productivity of colloidal nanomaterials: Which laser pulse width is more productive, ergonomic, and economic?

Quantitative evaluation of LAL productivity of colloidal nanomaterials: Which laser pulse width is more productive, ergonomic, and economic?

Elliptic solutions of the quintic complex one-dimensional Ginzburg–Landau equation

Design and Numerical Study of Induction-Heating Graphitization Furnace Based on Graphene Coils

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