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Fabrication, Characterization, and Electromechanical Reliability of Printed Stretchable and Wearable Electronics.

Record Type:	Electronic resources : Monograph/item
Title/Author:	Fabrication, Characterization, and Electromechanical Reliability of Printed Stretchable and Wearable Electronics./
Author:	Garakani, Behnam.
Description:	1 online resource (172 pages)
Notes:	Source: Dissertations Abstracts International, Volume: 84-01, Section: B.
Contained By:	Dissertations Abstracts International84-01B.
Subject:	Materials science. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=29212482click for full text (PQDT)
ISBN:	9798834078746

Fabrication, Characterization, and Electromechanical Reliability of Printed Stretchable and Wearable Electronics.
Garakani, Behnam.

Fabrication, Characterization, and Electromechanical Reliability of Printed Stretchable and Wearable Electronics. - 1 online resource (172 pages)

Source: Dissertations Abstracts International, Volume: 84-01, Section: B.

Thesis (Ph.D.)--State University of New York at Binghamton, 2022.

Includes bibliographical references

The field of stretchable electronics has expanded the potential of conventional rigid circuit boards into a new realm of wearable devices, artificial skins, prosthetics, and IoT applications such as continuous human vital signs monitoring and wireless sensing. Stretchable electronics can conform to various stretchable surfaces and can be incorporated into a human body or smart garments while maintaining operational efficiency during extension and contraction at high strain amplitudes over tens of thousands of cycles. The robustness and functionality of the device depend directly on the fabrication process and reliability of the stretchable circuitry. Hence, it is crucial to have a deep understanding of the interaction between the fabrication process, materials, and microstructure characteristics, and the reliability of wearable and stretchable circuitry under various operating conditions. This dissertation discusses the fabrication and electromechanical response of wearable and stretchable circuitry at various operating conditions. First, the screen printing technique as an additive manufacturing process for printing stretchable conductors using conductive composite-based ink is reviewed. proposed. Then the electromechanical reliability of the printed conductors during tension fatigue is reviewed and the microstructural mechanisms for the electrical and the mechanical response are proposed. Geometric features, as well as the microstructure characteristics, dictate the rate of damage accumulation during fatigue cycling of the printed stretchable conductors. In the second part, gallium alloy-based liquid metal conductors as highly stretchable and intrinsically conductors are introduced. The electromechanical response of the liquid metal during DC and RF testing confirms fatigue-free performance for 10000 stretching cycles at a strain amplitude of 30%. Additionally, RF insertion loss of the liquid metal conductor is not significantly affected by fatigue cycling. In the third part, the multilayer leadset for continuous health monitoring as well as diffident configurations of signal and shield layers is demonstrated. The results of the triboelectric test confirm that double side shielded structure minimizes triboelectric noise which is introduced to the system. The results of defibrillation show that laminated dielectric outperforms the printed dielectric. Finally, the effect of printing parameters including pressure and speed of squeegees and snap-off distance on the electrical resistance of the screen-printed trace is discussed and a model is proposed. In addition, the effect of annealing and environmental conditions on the electromechanical response of the printed trace is discussed in detail. .

Electronic reproduction.
Ann Arbor, Mich. :
ProQuest,
2023

Mode of access: World Wide Web

ISBN: 9798834078746Subjects--Topical Terms:

543314
Materials science.
Subjects--Index Terms:

ConductorIndex Terms--Genre/Form:

542853
Electronic books.

Fabrication, Characterization, and Electromechanical Reliability of Printed Stretchable and Wearable Electronics.
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300 $a 1 online resource (172 pages)
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500 $a Source: Dissertations Abstracts International, Volume: 84-01, Section: B.
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502 $a Thesis (Ph.D.)--State University of New York at Binghamton, 2022.
504 $a Includes bibliographical references
520 $a The field of stretchable electronics has expanded the potential of conventional rigid circuit boards into a new realm of wearable devices, artificial skins, prosthetics, and IoT applications such as continuous human vital signs monitoring and wireless sensing. Stretchable electronics can conform to various stretchable surfaces and can be incorporated into a human body or smart garments while maintaining operational efficiency during extension and contraction at high strain amplitudes over tens of thousands of cycles. The robustness and functionality of the device depend directly on the fabrication process and reliability of the stretchable circuitry. Hence, it is crucial to have a deep understanding of the interaction between the fabrication process, materials, and microstructure characteristics, and the reliability of wearable and stretchable circuitry under various operating conditions. This dissertation discusses the fabrication and electromechanical response of wearable and stretchable circuitry at various operating conditions. First, the screen printing technique as an additive manufacturing process for printing stretchable conductors using conductive composite-based ink is reviewed. proposed. Then the electromechanical reliability of the printed conductors during tension fatigue is reviewed and the microstructural mechanisms for the electrical and the mechanical response are proposed. Geometric features, as well as the microstructure characteristics, dictate the rate of damage accumulation during fatigue cycling of the printed stretchable conductors. In the second part, gallium alloy-based liquid metal conductors as highly stretchable and intrinsically conductors are introduced. The electromechanical response of the liquid metal during DC and RF testing confirms fatigue-free performance for 10000 stretching cycles at a strain amplitude of 30%. Additionally, RF insertion loss of the liquid metal conductor is not significantly affected by fatigue cycling. In the third part, the multilayer leadset for continuous health monitoring as well as diffident configurations of signal and shield layers is demonstrated. The results of the triboelectric test confirm that double side shielded structure minimizes triboelectric noise which is introduced to the system. The results of defibrillation show that laminated dielectric outperforms the printed dielectric. Finally, the effect of printing parameters including pressure and speed of squeegees and snap-off distance on the electrical resistance of the screen-printed trace is discussed and a model is proposed. In addition, the effect of annealing and environmental conditions on the electromechanical response of the printed trace is discussed in detail. .
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538 $a Mode of access: World Wide Web
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650 4 $a Electrical engineering. $3 649834
650 4 $a Mechanical engineering. $3 649730
653 $a Conductor
653 $a Electromechanical
653 $a Reliability
653 $a Stretchable
653 $a Wearable
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710 2 $a State University of New York at Binghamton. $b Materials Science and Engineering. $3 3434934
773 0 $t Dissertations Abstracts International $g 84-01B.
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=29212482 $z click for full text (PQDT)