Crack analysis of nano-sized thermoelectric material structures

Sládek, J.; Sládek, V.; Repka, Miroslav�; Schmauder, Siegfried

doi:10.1016/j.engfracmech.2020.107078

Cited by 12 publications

(7 citation statements)

References 37 publications

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“…When applied to similar problems involving nanosized structures, classic electromechanical coupling theories, on the other hand, fail to describe the size-dependent phenomenon observed experimentally. 89 It may be utilized for precise temperature detection at the nanoscale. The principal TE properties of single-walled carbon nanotubes (SWCNTs), NT-based composites, and TE gadgets arranged from these materials are investigated in Blackburn et al 90 It is demonstrated that the characteristic electronic properties of graphene strips can be completely recovered, and their TE effectiveness was clearly improved by methods for atomistic counts.…”

Section: Creating An Electric Potential Via Te Materialsmentioning

confidence: 99%

Smart materials for changing the electrical properties of nanostructures

Abbas

2021

Composites and Advanced Materials

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Smart materials have an important role in modern applications. They have contributed to improving various applications in several fields. One of the areas most affected by the improvement of smart materials is nanostructures. These materials are created by basic techniques, such as arrangement manipulation. Significant efforts have been made to enhance smart materials so that they resemble natural materials in terms of accuracy, design, and utility. Here, a review of the latest research on smart materials that can alter the electrical properties of nanostructures is presented. The main objective of this review is to introduce the role of smart materials in controlling the electrical performance of nanostructures. Furthermore, this review proposes an analysis of the integration and cooperation of previous research, such as the use of a piezoelectric motor in the design of structural magnetic nanodevices to control these devices. Piezoelectric actuators can also be used to develop a new method for controlling PV modulators for fabricating a single-wall nanotube. This new proposal could alter the properties of many nanoscale systems serving several medical and engineering fields. Moreover, this review proposes a novel methodology for nanocoating by introducing an antireflective coating with multiple layers. This method can effectively enhance the functions of the nanoscale coating.

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Section: Creating An Electric Potential Via Te Materialsmentioning

confidence: 99%

Smart materials for changing the electrical properties of nanostructures

Abbas

2021

Composites and Advanced Materials

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“…The finite element method, coupled with a collocation technique for enforcing kinematic constraints between strains and displacements, was employed to investigate issues related to nanosized cracks in thermoelectric materials. The study aimed to assess the impact of size effects on the changes in crack opening displacements in relation to stress intensity factors (SIFs) at the tips of the cracks [13]. They effectively tackled a two-dimensional issue in their research, concentrating on the behavior of limitless thermoelectric materials.…”

Section: Introductionmentioning

confidence: 99%

Stress Intensity Factors for Thermoelectric Bonded Materials Weakened by an Inclined Crack

Muhammad Haziq Iqmal Mohd Nordin,

Khairum Hamzah,

Nik Mohd Asri Nik Long

et al. 2024

ARAM

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Thermoelectric Bonded Materials (TEBM) weakened by an Inclined Crack Problems (ICP) subjected to remote stress was presented in this study. The problems are addressed by employing the Modified Complex Variable Function (MCVF) method, which incorporates the Continuity Conditions (CC) for the Resultant Electric Force (REF) and Displacement Electric Function (DEF) to formulate the Hypersingular Integral Equations (HSIEs) associated with these problems. By applying the curved length coordinate method, the unknown functions of Crack Opening Displacement (COD), Electric Current Density (ECD), and Energy Flux Load (EFL) are mapped onto the square root singularity function. The resulting equations are then numerically solved using appropriate quadrature formulas, with the traction along the crack utilized as the right-hand term. The obtained COD, ECD and EFL functions is then used to compute the dimensionless Stress Intensity Factors (SIFs) in order to determine the stability behavior of TEBM weakened by an ICP. The numerical results provided demonstrate the dimensionless SIFs at the crack tips. These results exhibit excellent agreement with previous studies conducted on the subject. Additionally, it is observed that the dimensionless SIFs at the crack tips are influenced by factors such as the ratio of Elastic Constants (ECR), the geometry of the cracks, and the coefficients associated with the Electric Current Density (ECD).

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“…In addition, some researchers have utilized nanocracks themselves in nanopatterning, 9 nanofluidic, 10 and thermoelectric device applications. 11 Recently, there have been several reports on an emergent phenomena from nanocracks in insulating oxide materials. 12−16 For examples, Abdollahi et al theoretically predicted the relationship between the direction of the polar axis and crack propagation in the piezoelectric material.…”

mentioning

confidence: 99%

“…In addition, some researchers have utilized nanocracks themselves in nanopatterning, 9 nanofluidic, 10 and thermoelectric device applications. 11 …”

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confidence: 99%

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Nanoscale Enhancement of the Local Optical Conductivity near Cracks in Metallic SrRuO₃ Film

Roh

Chang

et al. 2023

ACS Nano

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Cracking has been recognized as a major obstacle degrading material properties, including structural stability, electrical conductivity, and thermal conductivity. Recently, there have been several reports on the nanosized cracks (nanocracks), particularly in the insulating oxides. In this work, we comprehensively investigate how nanocracks affect the physical properties of metallic SrRuO3 (SRO) thin films. We grow SRO/SrTiO3 (STO) bilayers on KTaO3 (KTO) (001) substrates, which provide +1.7% tensile strain if the SRO layer is grown epitaxially. However, the SRO/STO bilayers suffer from the generation and propagation of nanocracks, and then, the strain becomes inhomogeneously relaxed. As the thickness increases, the nanocracks in the SRO layer become percolated, and its dc conductivity approaches zero. Notably, we observe an enhancement of the local optical conductivity near the nanocrack region using scanning-type near-field optical microscopy. This enhancement is attributed to the strain relaxation near the nanocracks. Our work indicates that nanocracks can be utilized as promising platforms for investigating local emergent phenomena related to strain effects.

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Crack analysis of nano-sized thermoelectric material structures

Cited by 12 publications

References 37 publications

Smart materials for changing the electrical properties of nanostructures

Smart materials for changing the electrical properties of nanostructures

Stress Intensity Factors for Thermoelectric Bonded Materials Weakened by an Inclined Crack

Nanoscale Enhancement of the Local Optical Conductivity near Cracks in Metallic SrRuO₃ Film

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Crack analysis of nano-sized thermoelectric material structures

Cited by 12 publications

References 37 publications

Smart materials for changing the electrical properties of nanostructures

Smart materials for changing the electrical properties of nanostructures

Stress Intensity Factors for Thermoelectric Bonded Materials Weakened by an Inclined Crack

Nanoscale Enhancement of the Local Optical Conductivity near Cracks in Metallic SrRuO3 Film

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Product

Resources

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Nanoscale Enhancement of the Local Optical Conductivity near Cracks in Metallic SrRuO₃ Film