Journal article
Nanomechanical properties and wear resistance of Palladium diselenide (PdSe2) for flexible electronics
Materials science & engineering. B, Solid-state materials for advanced technology, Vol.304, 117357
06/2024
DOI: 10.1016/j.mseb.2024.117357
Abstract
•The single crystal PdSe2 maintained 83% of its original volume after undergoing abrasion, demonstrating the exceptional elasticity of its surface.•Thanks to its strain hardening and sensitivity to strain rate, PdSe2 exhibits ductility like aluminum, enabling it to withstand considerable deformation without compromising its structural integrity.•The examination of its creep behavior revealed size-dependent mechanical endurance under constant load.•Strain hardening measurements yielded n = 0.21 ± 0.07, highlighting the material's high ductility and elasticity, making it ideal for vibration-proof applications in flexible electronics.
Palladium diselenide (PdSe2), a transition-metal dichalcogenide (TMDC), has received interest for its intriguing optical and electrical characteristics. Despite its relevance for flexible electronics, its mechanical properties have been only scarcely investigated. In this work, we examined time-dependent mechanical response, wear, and nanoductility of PdSe2 grown using chemical vapor transport. Specifically, we measured hardness, elastic modulus, creep characteristics, activation volume, strain rate sensitivity, and wear resistance using nanoindentation and nanoscratch experiments. The obtained values of Young's modulus and hardness are promising for flexible electronic applications. Due to its strain hardening and strain-rate sensitivity, PdSe2 is ductile like aluminum and could endure significant deformation without losing structural integrity.
The investigation of the creep behavior showed its size-dependent mechanical endurance under steady load, which is important for device dependability. Additionally, activation volume calculations indicate dislocation dynamics and processes during deformation, revealing the material's reaction to different mechanical loading conditions.
Our nanoscratch experiments showed resilience to surface wear, confirming its suitability for durable flexible electronic devices. The significant elasticity of PdSe2, facilitating substantial recovery after deformation, renders it well-suited for flexible and wearable electronic devices requiring the maintenance of electrical continuity even under mechanical stress. The results of our mechanical characterization will open the door to the design and manufacturing of next generation PdSe2-based flexible electronic devices.
Details
- Title: Subtitle
- Nanomechanical properties and wear resistance of Palladium diselenide (PdSe2) for flexible electronics
- Creators
- Utku Uzun - Tarsus UniversityParth Kotak - University of IowaMahmudul Alam Shakib - Department of Mechanical Engineering, University of Iowa, Iowa City, IA 52242, USARabiu Onoruoiza Mamman - Department of Mechanical Engineering, University of Iowa, Iowa City, IA 52242, USASawsan Daws - University of IowaChia-Nung Kuo - National Cheng Kung UniversityChin Shan Lue - National Cheng Kung UniversityAntonio Politano - University of L'AquilaCaterina Lamuta - University of Iowa
- Resource Type
- Journal article
- Publication Details
- Materials science & engineering. B, Solid-state materials for advanced technology, Vol.304, 117357
- Publisher
- Elsevier B.V
- DOI
- 10.1016/j.mseb.2024.117357
- ISSN
- 0921-5107
- eISSN
- 1873-4944
- Grant note
- DOI: 10.13039/501100003407, name: Ministero dell’Istruzione, dell’Università e della Ricerca
- Language
- English
- Date published
- 06/2024
- Academic Unit
- Mechanical Engineering; Roy J. Carver Department of Biomedical Engineering
- Record Identifier
- 9984617009802771
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