Wide-Range Thickness Dependent Friction Behavior in 2D CuInP2S6-In4/3P2S6 Nanosheets: Implications for Tribology Applications

Lei Wang; Dawei Zhang; Zheng Dong Luo; Jianbo Tang; Pankaj Sharma; Jan Seidel

doi:10.1021/acsanm.4c03149

Wide-Range Thickness Dependent Friction Behavior in 2D CuInP₂S₆-In_4/3P₂S₆ Nanosheets: Implications for Tribology Applications

Lei Wang, Dawei Zhang, Zheng Dong Luo, Jianbo Tang, Pankaj Sharma, Jan Seidel

College of Science and Engineering

Research output: Contribution to journal › Article › peer-review

Abstract

Friction has been recognized and studied for a long time due to its fundamental significance in the processes of human manufacturing and production. However, friction behavior at the nanoscale sometimes violates the conventional classical friction theory. Thickness-dependent friction behavior has been reported in nonpolar van der Waals materials but only within the few-layer range. Here, we report a wide thickness range of thickness-dependent friction behavior in functional van der Waals copper-deficient CuInP₂S₆ (Cu_0.2In_1.26P₂S₆), which exhibits spontaneous phase separation of ferroelectric and paraelectric phases. The friction gradually decreases with the increase of the thickness within the range of 20-230 nm. A higher adhesion force and phononic damping collectively contribute to higher friction in thinner nanoflakes.

Original language	English
Pages (from-to)	19297-19304
Number of pages	8
Journal	ACS Applied Nano Materials
Volume	7
Issue number	16
Early online date	7 Aug 2024
DOIs	https://doi.org/10.1021/acsanm.4c03149
Publication status	Published - 23 Aug 2024

Keywords

adhesion force
CuInP2S6
friction
phononic damping
thickness

Access to Document

10.1021/acsanm.4c03149Licence: In Copyright

Cite this

@article{67a48a431a194c9b897ed2289036893c,

title = "Wide-Range Thickness Dependent Friction Behavior in 2D CuInP2S6-In4/3P2S6 Nanosheets: Implications for Tribology Applications",

abstract = "Friction has been recognized and studied for a long time due to its fundamental significance in the processes of human manufacturing and production. However, friction behavior at the nanoscale sometimes violates the conventional classical friction theory. Thickness-dependent friction behavior has been reported in nonpolar van der Waals materials but only within the few-layer range. Here, we report a wide thickness range of thickness-dependent friction behavior in functional van der Waals copper-deficient CuInP2S6 (Cu0.2In1.26P2S6), which exhibits spontaneous phase separation of ferroelectric and paraelectric phases. The friction gradually decreases with the increase of the thickness within the range of 20-230 nm. A higher adhesion force and phononic damping collectively contribute to higher friction in thinner nanoflakes.",

keywords = "adhesion force, CuInP2S6, friction, phononic damping, thickness",

author = "Lei Wang and Dawei Zhang and Luo, {Zheng Dong} and Jianbo Tang and Pankaj Sharma and Jan Seidel",

year = "2024",

month = aug,

day = "23",

doi = "10.1021/acsanm.4c03149",

language = "English",

volume = "7",

pages = "19297--19304",

journal = "ACS Applied Nano Materials",

issn = "2574-0970",

publisher = "American Chemical Society",

number = "16",

}

TY - JOUR

T1 - Wide-Range Thickness Dependent Friction Behavior in 2D CuInP2S6-In4/3P2S6 Nanosheets

T2 - Implications for Tribology Applications

AU - Wang, Lei

AU - Zhang, Dawei

AU - Luo, Zheng Dong

AU - Tang, Jianbo

AU - Sharma, Pankaj

AU - Seidel, Jan

PY - 2024/8/23

Y1 - 2024/8/23

N2 - Friction has been recognized and studied for a long time due to its fundamental significance in the processes of human manufacturing and production. However, friction behavior at the nanoscale sometimes violates the conventional classical friction theory. Thickness-dependent friction behavior has been reported in nonpolar van der Waals materials but only within the few-layer range. Here, we report a wide thickness range of thickness-dependent friction behavior in functional van der Waals copper-deficient CuInP2S6 (Cu0.2In1.26P2S6), which exhibits spontaneous phase separation of ferroelectric and paraelectric phases. The friction gradually decreases with the increase of the thickness within the range of 20-230 nm. A higher adhesion force and phononic damping collectively contribute to higher friction in thinner nanoflakes.

AB - Friction has been recognized and studied for a long time due to its fundamental significance in the processes of human manufacturing and production. However, friction behavior at the nanoscale sometimes violates the conventional classical friction theory. Thickness-dependent friction behavior has been reported in nonpolar van der Waals materials but only within the few-layer range. Here, we report a wide thickness range of thickness-dependent friction behavior in functional van der Waals copper-deficient CuInP2S6 (Cu0.2In1.26P2S6), which exhibits spontaneous phase separation of ferroelectric and paraelectric phases. The friction gradually decreases with the increase of the thickness within the range of 20-230 nm. A higher adhesion force and phononic damping collectively contribute to higher friction in thinner nanoflakes.

KW - adhesion force

KW - CuInP2S6

KW - friction

KW - phononic damping

KW - thickness

UR - http://www.scopus.com/inward/record.url?scp=85200803598&partnerID=8YFLogxK

U2 - 10.1021/acsanm.4c03149

DO - 10.1021/acsanm.4c03149

M3 - Article

AN - SCOPUS:85200803598

SN - 2574-0970

VL - 7

SP - 19297

EP - 19304

JO - ACS Applied Nano Materials

JF - ACS Applied Nano Materials

IS - 16

ER -

Wide-Range Thickness Dependent Friction Behavior in 2D CuInP₂S₆-In_4/3P₂S₆ Nanosheets: Implications for Tribology Applications

Abstract

Keywords

Access to Document

Other files and links

Fingerprint

Cite this