Collaborative Research: Friction in Flatland - Contact, Adhesion, and Friction of 2D Materials

合作研究：平地摩擦 - 二维材料的接触、粘附和摩擦

基本信息

批准号：
1761874
负责人：
Robert Carpick
金额：
$ 37.4万
依托单位：
University of Pennsylvania
依托单位国家：
美国
项目类别：
Standard Grant
财政年份：
2018
资助国家：
美国
起止时间：
2018-07-15 至 2022-06-30
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=1761874&HistoricalAwards=false
关键词：
Collaborative Research Friction Flatland Contact

项目摘要

Two-dimensional materials are layered materials having atomic- to nano-scale thickness. They are increasingly being explored and used for a multitude of applications that take advantage of the materials' layered structure. However, the properties of the interfaces between the layers are still poorly understood, due in part to challenges associated with direct measurement of such properties at very small length scales. The goal of this project is to obtain a fundamental understanding of the effect of material properties, including composition, phase, and crystallinity, on the critical properties of interfacial contact, adhesion, and friction. This will have broad technological impact, since investigation of layered materials is needed to optimize and transform their use in applications that rely on these critical properties to function effectively. The focus of this research is on layered materials that are relevant to current and emerging applications, including those in the automotive, aerospace, and electronics industries, thereby promoting the progress of science; advancing the national health, prosperity, and welfare; and securing the national defense. The research objectives of this project will be complemented by activities focused on providing opportunities for students from underrepresented groups, including involving the large Hispanic population at University of California Merced and leveraging successful outreach programs at University of Pennsylvania. The team will also engage with pre-college audiences, building on the PIs' track records of public and youth engagement.This project will focus on the nanoscale interfacial contact, adhesion, and friction behavior of transition metal dichalcogenides, including molybdenum disulfide. Research on these materials will be carried out through optimally-matched atomic force microscopy and accelerated molecular dynamics simulations, taking advantage of the unique capabilities of the PIs. Optimal matching allows simulations to be validated by experiments, and experimental findings to be fully explored in atomically-resolved detail by simulations. Availability of probe tips and substrates coated with well-defined, ultrathin transition metal dichalcogenides using recently developed techniques will enable isolation of the effects of composition, phase, and crystallinity for both self-mated and heterostructure interfaces. This novel approach will yield fundamental insights into the mechanical properties of transition metal dichalcogenide interfaces that are needed for rational and predictive design of materials, devices, and systems composed of these materials.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

二维材料是具有原子至纳米级厚度的层状材料。它们越来越多地被探索并用于利用材料层状结构的多种应用。然而，人们对层间界面的性质仍然知之甚少，部分原因是在非常小的长度尺度上直接测量这些性质所面临的挑战。该项目的目标是从根本上了解材料特性（包括成分、相和结晶度）对界面接触、粘附和摩擦等关键特性的影响。这将产生广泛的技术影响，因为需要对层状材料进行研究，以优化和转变它们在依赖这些关键特性有效发挥作用的应用中的使用。这项研究的重点是与当前和新兴应用相关的层状材料，包括汽车、航空航天和电子行业的应用，从而促进科学进步；促进国民健康、繁荣和福利；并确保国防。该项目的研究目标将辅以旨在为代表性不足群体的学生提供机会的活动，包括让加州大学默塞德分校的大量西班牙裔人口参与进来，并利用宾夕法尼亚大学成功的外展项目。该团队还将与大学预科生进行互动，以 PI 的公众和青少年参与记录为基础。该项目将重点研究过渡金属二硫化物（包括二硫化钼）的纳米级界面接触、粘附和摩擦行为。对这些材料的研究将利用 PI 的独特功能，通过最佳匹配的原子力显微镜和加速分子动力学模拟进行。最佳匹配允许通过实验验证模拟，并通过模拟以原子分辨率的细节充分探索实验结果。使用最近开发的技术，涂有明确的超薄过渡金属二硫族化物的探针尖端和基底的可用性将能够隔离自配合和异质结构界面的成分、相和结晶度的影响。这种新颖的方法将对过渡金属二硫族化物界面的机械性能产生基本的见解，这是对由这些材料组成的材料、设备和系统进行合理和预测设计所需的。该奖项反映了 NSF 的法定使命，并被认为值得通过以下方式获得支持：使用基金会的智力价值和更广泛的影响审查标准进行评估。

项目成果

期刊论文数量（10）

专著数量（0）

科研奖励数量（0）

会议论文数量（0）

专利数量（0）

AFM at the Macroscale: Methods to Fabricate and Calibrate Probes for Millinewton Force Measurements

宏观尺度的 AFM：用于毫牛顿力测量的探针的制造和校准方法

DOI：
10.1007/s11249-019-1134-2
发表时间：
2019-03
期刊：
Tribology Letters
影响因子：
3.2
作者：
Garabedian, N. T.;Khare, H. S.;Carpick, R. W.;Burris, D. L.
通讯作者：
Burris, D. L.

Origin of Nanoscale Friction Contrast between Supported Graphene, MoS 2 , and a Graphene/MoS 2 Heterostructure

支撑石墨烯、MoS 2 和石墨烯/MoS 2 异质结构之间纳米级摩擦对比的起源

DOI：
10.1021/acs.nanolett.9b02035
发表时间：
2019-07
期刊：
Nano Letters
影响因子：
10.8
作者：
Vazirisereshk, Mohammad R.;Ye, Han;Ye, Zhijiang;Otero;Zhao, Meng;Gao, Zhaoli;Johnson, A. T.;Johnson, Erin R.;Carpick, Robert W.;Martini, Ashlie
通讯作者：
Martini, Ashlie

Linescan Lattice Microscopy: A Technique for the Accurate Measurement and Mapping of Lattice Spacing and Strain with Atomic Force Microscopy

线扫描晶格显微镜：利用原子力显微镜精确测量和绘制晶格间距和应变的技术

DOI：
10.1021/acs.langmuir.1c01019
发表时间：
2021-07
期刊：
Langmuir
影响因子：
3.9
作者：
McClimon, J. Brandon;Milne, Zac;Hasz, Kathryn;Carpick, Robert W.
通讯作者：
Carpick, Robert W.

Experiments and simulations of the humidity dependence of friction between nanoasperities and graphite: The role of interfacial contact quality

纳米粗糙体和石墨之间摩擦的湿度依赖性的实验和模拟：界面接触质量的作用

DOI：
10.1103/physrevmaterials.2.126001
发表时间：
2018-12-07
期刊：
Physical Review Materials
影响因子：
3.4
作者：
K. Hasz;Z. Ye;A. Martini;R. Carpick
通讯作者：
R. Carpick

A modified multibond model for nanoscale static friction

改进的纳米级静摩擦多重键模型

DOI：
10.1098/rsta.2021.0342
发表时间：
2022-09
期刊：
Physical and Engineering Sciences
影响因子：
0
作者：
Milne, Zachary B.;Hasz, Kathryn;McClimon, J. B.;Castro, Juan;Carpick, Robert W.
通讯作者：
Carpick, Robert W.