Effect of shock waves on thermophysical properties of ADP and KDP crystals

Sivakumar, A.; Suresh, S.; Balachandar, S.; Thirupathy, J.; Sundar, Jeyaperumal Kalyana; Dhas, S. A. Martin Britto

doi:10.1016/j.optlastec.2018.10.001

Cited by 85 publications

(30 citation statements)

References 31 publications

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“…The phase-transition behavior of materials in solid–solid, liquid–solid, or solid–liquid transition under shock wave compression situations can provide in-depth information of the mechanism involved in it along with direct key evidence, which could lead to the pathway of understanding the material properties, which may help us to develop new structural models. − Over the past 50 years, research on the influence of shock waves impact on materials has been in the forefront as it could throw light on several usual and unusual behaviors of materials, but the clear as well as thorough understanding remains to be an area that is yet to be ventured into so as to unearth the hidden facts. Because a lot of variations are being observed in the materials’ properties under static shock compression, high pressure, and dynamic shock wave impact conditions, which have been analyzed with various characterizations, much of the facts remain in situ for years. − Based on the literature survey, it is very well evident that the acoustical shock wave effects are quite different from static pressure, plate impact, static shock compression, natural shock wave recovered conditions, etc. , …”

Section: Introductionmentioning

confidence: 99%

Phase Transformation of Amorphous to Crystalline of Multiwall Carbon Nanotubes by Shock Waves

Sivakumar

Dhas²,

Pazhanivel

et al. 2021

Crystal Growth & Design

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It has been a fascinating journey for the researchers to explore and understand the phase-transition behavior of materials under shock-wave-loaded condition as it has attained the status of being one of the prominent research topics in recent years due to its technological predominance so that it is imperative to understand the behavior of materials under high pressure and temperature. For the present investigation, multiwall carbon nanotubes (MWCNTs) are preferred over the other materials for shock wave impact study because MWCNTs are one of the most important as well as technologically interesting materials. However, despite many attempts over the years, the study of phase transition of materials under high-pressure and -temperature conditions continues to be a challenging task and its implications with respect to the applications to date have emerged as an ongoing debatable area. In this line, we have succeeded in tracking the phase-transition behavior of MWCNTs from amorphous-to-crystalline transition (ACT) influenced by the dynamic impact of shock waves with which experimental analyses have been performed and the details are presented. The data obtained from X-ray diffraction (XRD), Raman analysis, transmission electron microscopy (TEM), and selected area electron diffraction (SAED) reveal the formation of crystalline CNTs at 300 shock pulse-loaded condition. Due to the growing demand of industrial requirements for crystalline CNTs in energy storage applications, the samples have been subjected to the investigation of their electrochemical charge storage performances so as to ensure their utilization. Interestingly, the shock-loaded samples show substantial improvement in the electrochemical properties such that the maximum value of specific capacitance for the control 150 and 300 shocks-loaded CNTs are found to be 196, 215, and 294 F g–1, respectively.

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Section: Introductionmentioning

confidence: 99%

Phase Transformation of Amorphous to Crystalline of Multiwall Carbon Nanotubes by Shock Waves

Sivakumar

Dhas²,

Pazhanivel

et al. 2021

Crystal Growth & Design

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“…With the development of high-power lasers, the heat dissipation issue becomes an important design consideration. Thermophysical properties, such as the thermal expansion coefficient and thermal conductivity, play an important role in the design of novel electronic devices and high-power laser systems [ 1 , 2 ]. However, it is difficult to accurately measure thermal properties because of the strong anisotropy of thermal conduction in KDP crystal.…”

Section: Introductionmentioning

confidence: 99%

Freestanding Flexible Sensor Based on 3ω Technique for Anisotropic Thermal Conductivity Measurement of Potassium Dihydrogen Phosphate Crystal

Qiu

Ouyang

et al. 2021

Sensors

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A new freestanding sensor-based 3ω technique is presented here, which remarkably expands the application of traditional 3ω technology to anisotropic materials. The freestanding flexible sensor was fabricated using the mature flexible printed circuit production technique, which is non-destructive to the samples and applicable to porous surfaces. The thermal conductivities of potassium dihydrogen phosphate (KDP) crystal along the (100), (010) and (001) crystallographic planes were measured based on this new sensor at room temperature. We found that the freestanding flexible sensor has considerable application value for thermal properties’ characterization for crystals with anisotropic thermophysical properties and other structures for which the traditional 3ω technique is not applicable.

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“…On the one hand, the crystallographic features due to the effect of pressure compression on ferrite NPs have been quite well known while on the other hand, the effect of pressure compression impacted on the ferrite materials' functional properties such as optical transmittance, dielectric constant, capacitance and electrical conductivity are relatively unknown as compared to the crystallographic details. The remarkable response of nanoparticles on their physical and chemical properties to the external stimuli of high pressure, temperature, gamma rays, and shock waves is quite well known [11][12][13][14][15].…”

Section: Introductionmentioning

confidence: 99%

Raman Spectroscopic and Electrochemical Measurements of Dynamic Shocked MnFe2O4 Nano-crystalline Materials

Sivakumar

Dhas²,

Sivaprakash

et al. 2021

J Inorg Organomet Polym

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Divalent ferrite nano-crystalline materials subjected to shock wave recovery analysis have received nondebatable attention among the materials scientists due to their outstanding contribution that has fueled the enrichment of high-pressure ferrites science which act as the focal-point of the current research theme. On those lines, we intend to provide the Raman spectroscopic and electrochemical measurements of manganese ferrite nanoparticles (MnFe 2 O 4 NPs) at dynamic shocked conditions. Raman spectroscopic analysis has revealed the stability of the tetrahedral (A-site) and octahedral (B-sites) sites of Mn 2+ ions as well as Fe 3+ ions at shocked conditions. Cyclic-voltammetry (CV-analysis) and impedance spectroscopic measurements of shocked samples have demonstrated the electro-chemical properties of MnFe 2 O 4 NPs whose electrical conductivity is found to be reduced while increasing the number of shock pulses. The consolidated results provide the solid evidence that the test sample's crystal structure does not undergo any crystallographic phase transitions or mixed spinel states at shocked conditions.

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Effect of shock waves on thermophysical properties of ADP and KDP crystals

Cited by 85 publications

References 31 publications

Phase Transformation of Amorphous to Crystalline of Multiwall Carbon Nanotubes by Shock Waves

Phase Transformation of Amorphous to Crystalline of Multiwall Carbon Nanotubes by Shock Waves

Freestanding Flexible Sensor Based on 3ω Technique for Anisotropic Thermal Conductivity Measurement of Potassium Dihydrogen Phosphate Crystal

Raman Spectroscopic and Electrochemical Measurements of Dynamic Shocked MnFe2O4 Nano-crystalline Materials

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