Object's details: Wykorzystanie spektroskopii Ramana w badaniach materiałów niskowymiarowych

Provider:Repozytorium Uniwersytetu Łódzkiego

Description

Title:
Wykorzystanie spektroskopii Ramana w badaniach materiałów niskowymiarowych
Creator:
Piskorski, Michał
Contributor:
Uniwersytet Łódzki, Wydział Fizyki i Informatyki Stosowanej, Katedra Fizyki Ciała Stałego;
michal.piskorski@uni.lodz.pl
Description:
The presented dissertation focuses on the application of Raman spectroscopy in the study of low-dimensional systems. The main objectives included the integration of the Raman spectrometer with systems operating under controlled conditions, such as a glovebox with an inert gas atmosphere and an ultrahigh vacuum low-temperature scanning tunneling microscope system, as well as conducting investigations of low-dimensional materials using the developed system. The dissertation consists of five chapters, the last of which is a summary. Chapter 1 discusses research motivations, study objectives, and the theoretical foundations of the Raman effect, along with technical aspects of Raman spectroscopy. Chapter 2 details the design of a mapping Raman spectrometer integrated with a glovebox for argon-atmosphere measurements. Only essential components are placed inside. Subchapter 2.4 highlights the benefits of a protective atmosphere using hygroscopic Re₂O₇. Chapter 3 explores low-dimensional TMDC flakes of various polytypes. Data analysis enabled determining absorption coefficients and flake thickness. Anomalous Raman intensity dependence was examined, while tellurium-based flakes revealed unexpected metallic tellurium, prompting further studies. Chapter 4 discusses ultrahigh vacuum and low-temperature measurements, as well as the spectrometer’s integration with the vacuum system. A low-intensity silicon reference spectrum was obtained. Angle-dependent optical studies clarified results. Future work will expand the system for Tip-Enhanced Raman Spectroscopy mapping.;
The PhD research was conducted as part of the project "STM-tip enhanced Raman spectroscopy of single chiral molecules" funded by the National Science Centre under the Sonata Bis 7 program (2017/26/E/ST8/00987).
Object availability:
free access
Date:
2025.01.31;
2024;
2025.03.12
Type:
PhD/Doctoral Dissertation
Language:
Polish
Format:
application/pdf
Subject:
Raman spectroscopy;
Raman scattering maps;
low-dimensional materials
Identifier: http://hdl.handle.net/11089/54444
Data provider:
Repozytorium Uniwersytetu Łódzkiego

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