Search

Search

这页已由机器翻译。其他页面可能仍然显示为英文。 View in English

首页
...
研究领域工程学纳米技术纳米学
揭示使用中心到边缘滚动机制制造的MoS₂纳米晶体中奇拉光发光的巨大极化比率

揭示使用中心到边缘滚动机制制造的MoS₂纳米晶体中奇拉光发光的巨大极化比率

Rahul Kesarwani ^1,2, Miroslav Veverka ¹, Martin Žáček ¹, Vaibhav Varade ¹, Ladislav Fekete ³, Martin Kalbac ², Jana Vejpravova ¹

Rahul Kesarwani ^1,2, Miroslav Veverka ¹, Martin Žáček ¹

¹Department of Condensed Matter Physics, Faculty of Mathematics and Physics, Charles University, Ke Karlovu 5, 121 16 Prague 2, Czech Republic. jana.vejpravova@matfyz.cuni.cz.
²Department of Low-Dimensional Systems, J. Heyrovsky Institute of Physical Chemistry, Dolejskova 3, 182 23 Prague 8, Czech Republic.
³Department of Analysis of Functional Materials, Institute of Physics of the Czech Academic of Sciences, Na Slovance 2, 182 00 Prague 8, Czech Republic.

⁰Department of Condensed Matter Physics, Faculty of Mathematics and Physics, Charles University, Ke Karlovu 5, 121 16 Prague 2, Czech Republic. jana.vejpravova@matfyz.cuni.cz.

Nanoscale Horizons +

|

2025年八月29日

相关实验视频

These videos have been matched automatically. Contact us if they are not relevant.

Polarization-Sensitive Two-Photon Microscopy for a Label-Free Amyloid Structural Characterization

Polarization-Sensitive Two-Photon Microscopy for a Label-Free Amyloid Structural Characterization

Published on: September 8, 2023

Automation of Mode Locking in a Nonlinear Polarization Rotation Fiber Laser through Output Polarization Measurements

Automation of Mode Locking in a Nonlinear Polarization Rotation Fiber Laser through Output Polarization Measurements

Published on: February 28, 2016

Experimental Methods for Spin- and Angle-Resolved Photoemission Spectroscopy Combined with Polarization-Variable Laser

Experimental Methods for Spin- and Angle-Resolved Photoemission Spectroscopy Combined with Polarization-Variable Laser

Published on: June 28, 2018

See all related videos

在PubMed上查看摘要

概括

此摘要是机器生成的。

机械应变将二硫化 (MoS2) 卷成纳米结构,从而产生异构的光学特性. 这种纳米滚动可以为先进的光电子设备提供量身定制的光过.

科学领域

材料科学
凝聚物质物理学
纳米技术

背景情况

像二硫化 (MoS2) 这样的二维材料具有独特的电子和光学特性.
控制MoS2的纳米结构对于定制其光电子行为至关重要.
在变形的二维材料中理解光学异构性是设备应用的关键.

研究的目的

研究机械应变诱导的滚动对单层MoS2的光学性能的影响.
分析滚动的MoS2纳米结构中的异构和对称性破坏.
探索纳米滚动MoS2在光电子设备中的潜力.

主要方法

使用机械应变将单层MoS2系统地成纳米结构.
极化分辨光发光 (PL) 和拉曼光谱用于光学分析.
取决于角度的PL测量以量化极化比率.

主要成果

与平面区域不同的是,制的MoS2区域具有显著的光学异质性.
拉曼光谱显示出一个明显的E2g/A1g强度比 (约. 0.25) 在制区域.
在制的MoS2中,增强了28%的线性极化比率 (LPR) 和37%的圆性极化比率 (CPR).

结论

滚动诱导的变形极大地改变了MoS2中的激子极化,破坏了对称性.
纳米滚动的MoS2表现出强烈的光学异质性,使得光线能够精确过.
这项工作为下一代光电子提供了基础,

相关实验视频

这些视频已自动匹配 Contact us 如果它们不相关

Polarization-Sensitive Two-Photon Microscopy for a Label-Free Amyloid Structural Characterization

Polarization-Sensitive Two-Photon Microscopy for a Label-Free Amyloid Structural Characterization

Published on: September 8, 2023

Automation of Mode Locking in a Nonlinear Polarization Rotation Fiber Laser through Output Polarization Measurements

Automation of Mode Locking in a Nonlinear Polarization Rotation Fiber Laser through Output Polarization Measurements

Published on: February 28, 2016

Experimental Methods for Spin- and Angle-Resolved Photoemission Spectroscopy Combined with Polarization-Variable Laser

Experimental Methods for Spin- and Angle-Resolved Photoemission Spectroscopy Combined with Polarization-Variable Laser

Published on: June 28, 2018

See all related videos

相关概念视频

Molecules with Multiple Chiral Centers

Molecules with Multiple Chiral Centers

Molecules that possess multiple chiral centers can afford a large number of stereoisomers. For instance, while some molecules like 2-butanol have one chiral center, defined as a tetrahedral carbon atom with four different substituents attached, several molecules like butane-2,3-diol have multiple chiral centers. A simple formula to predict the number of stereoisomers possible for a molecule with n chiral centers is 2n. However, there can be a lower number where some of the stereoisomers are...

Share

X
Facebook
LinkedIn
YouTube

ABOUT JoVE

Overview
Leadership
Blog
JoVE Help Center

AUTHORS

Publishing Process
Editorial Board
Scope & Policies
Peer Review
FAQ
Submit

LIBRARIANS

Testimonials
Subscriptions
Access
Resources
Library Advisory Board
FAQ

RESEARCH

JoVE Journal
Methods Collections
JoVE Encyclopedia of Experiments
Archive

EDUCATION

JoVE Core
JoVE Business
JoVE Science Education
JoVE Lab Manual
Faculty Resource Center
Faculty Site

Terms & Conditions of Use
Privacy Policy
Policies