Large and Pressure-Dependent c-Axis Piezoresistivity of Highly Oriented Pyrolytic Graphite near Zero Pressure
The c-axis piezoresistivity is a fundamental and important parameter of graphite, but its value near zero pressure has not been well determined. Herein, a new method for studying the c-axis piezoresistivity of van der Waals materials near zero pressure is developed on the basis of in situ scanning electron microscopy and finite element simulation. The c-axis piezoresistivity of microscale highly oriented pyrolytic graphite (HOPG) is found to show a large value of 5.68 × 10-5 kPa-1 near zero pressure and decreases by 2 orders of magnitude to the established value of ∼10-7 kPa-1 when the pressure increases to 200 MPa. By modulating the serial tunneling barrier model on the basis of the stacking faults, we describe the c-axis electrical transport of HOPG under compression. The large c-axis piezoresistivity near zero pressure and its large decrease in magnitude with pressure are attributed to the rapid stiffening of the electromechanical properties under compression.
| Medienart: |
E-Artikel |
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| Erscheinungsjahr: |
2024 |
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| Erschienen: |
2024 |
| Enthalten in: |
Zur Gesamtaufnahme - year:2024 |
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| Enthalten in: |
Nano letters - (2024) vom: 25. März |
| Sprache: |
Englisch |
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| Beteiligte Personen: |
Wang, Bingjie [VerfasserIn] |
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| Links: |
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| Themen: |
C-axis piezoresistivity |
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| Anmerkungen: |
Date Revised 25.03.2024 published: Print-Electronic Citation Status Publisher |
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| doi: |
10.1021/acs.nanolett.4c00687 |
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| funding: |
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| Förderinstitution / Projekttitel: |
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| PPN (Katalog-ID): |
NLM370154738 |
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| 245 | 1 | 0 | |a Large and Pressure-Dependent c-Axis Piezoresistivity of Highly Oriented Pyrolytic Graphite near Zero Pressure |
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| 500 | |a Citation Status Publisher | ||
| 520 | |a The c-axis piezoresistivity is a fundamental and important parameter of graphite, but its value near zero pressure has not been well determined. Herein, a new method for studying the c-axis piezoresistivity of van der Waals materials near zero pressure is developed on the basis of in situ scanning electron microscopy and finite element simulation. The c-axis piezoresistivity of microscale highly oriented pyrolytic graphite (HOPG) is found to show a large value of 5.68 × 10-5 kPa-1 near zero pressure and decreases by 2 orders of magnitude to the established value of ∼10-7 kPa-1 when the pressure increases to 200 MPa. By modulating the serial tunneling barrier model on the basis of the stacking faults, we describe the c-axis electrical transport of HOPG under compression. The large c-axis piezoresistivity near zero pressure and its large decrease in magnitude with pressure are attributed to the rapid stiffening of the electromechanical properties under compression | ||
| 650 | 4 | |a Journal Article | |
| 650 | 4 | |a c-axis piezoresistivity | |
| 650 | 4 | |a c-axis stress | |
| 650 | 4 | |a graphite | |
| 650 | 4 | |a in situ SEM | |
| 650 | 4 | |a indentation | |
| 700 | 1 | |a Li, Juyao |e verfasserin |4 aut | |
| 700 | 1 | |a Fang, Zheng |e verfasserin |4 aut | |
| 700 | 1 | |a Jiang, Yifan |e verfasserin |4 aut | |
| 700 | 1 | |a Li, Shuo |e verfasserin |4 aut | |
| 700 | 1 | |a Zhan, Fangyuan |e verfasserin |4 aut | |
| 700 | 1 | |a Dai, Zhaohe |e verfasserin |4 aut | |
| 700 | 1 | |a Chen, Qing |e verfasserin |4 aut | |
| 700 | 1 | |a Wei, Xianlong |e verfasserin |4 aut | |
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