Strain-induced modulation of the local conductance in MoS2 layers on gold nanoparticles

IF 6.3 2区材料科学 Q2 CHEMISTRY, PHYSICAL

Surfaces and Interfaces Pub Date : 2025-09-20 DOI:10.1016/j.surfin.2025.107725

Zoltán Osváth, András Pálinkás, György Molnár, Péter Kun, Antal A. Koós

引用次数: 0

Abstract

Strained mono- and multilayer MoS₂ structures were synthesized via exfoliation onto thin gold films followed by annealing at 400 °C. Annealing transformed the gold film into nanoparticles, leading to suspended MoS₂ regions. Raman spectroscopy revealed enhanced local strain in suspended monolayer regions compared to those supported by the SiO₂ substrate. Tunneling atomic force microscopy (TUNA) measurements showed that the conductance in monolayers is modulated by both strain and charge transfer from gold nanoparticles. In contrast, the conductance of multilayer MoS₂ showed variations primarily reflecting the effects of strain, indicating local strain-induced narrowing of the bandgap.

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金纳米颗粒上MoS2层局部电导的应变诱导调制

通过在金薄膜上剥落，然后在400℃下退火，合成了应变的单层和多层MoS 2结构。退火将金膜转化为纳米颗粒，导致悬浮的MoS₂区域。拉曼光谱显示，与二氧化硅衬底支撑的区域相比，悬浮单层区域的局部应变增强。隧道原子力显微镜（TUNA）的测量结果表明，单分子层的电导率受到金纳米颗粒的应变和电荷转移的调制。相比之下，多层MoS 2的电导变化主要反映了应变的影响，表明局部应变导致带隙缩小。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Surfaces and Interfaces Chemistry-General Chemistry

CiteScore

8.50

自引率

6.50%

发文量

753

审稿时长

35 days

期刊介绍： The aim of the journal is to provide a respectful outlet for ''sound science'' papers in all research areas on surfaces and interfaces. We define sound science papers as papers that describe new and well-executed research, but that do not necessarily provide brand new insights or are merely a description of research results. Surfaces and Interfaces publishes research papers in all fields of surface science which may not always find the right home on first submission to our Elsevier sister journals (Applied Surface, Surface and Coatings Technology, Thin Solid Films)