Essays about: "Graphene and Raman spectroscopy"

Showing result 1 - 5 of 16 essays containing the words Graphene and Raman spectroscopy.

  1. 1. Phonons in 1-D Graphene Nanoribbons Probed with Raman Spectroscopy : Unraveling Fundamental Properties in 9-atom-wide Graphene Nanoribbons

    University essay from KTH/Skolan för elektroteknik och datavetenskap (EECS)

    Author : Angel Victor Labordet Alvarez; [2023]
    Keywords : 9-armchair graphene nanoribbons 9-AGNRs ; polarization Raman Spectroscopy PRS ; temperature-dependent Raman spectroscopy; thermal sensitivity; thermal stability; Grüneisen parameter χ ; anharmonicities; vibrational modes G; D; RBLM .; 9-armchair grafen nanoribbons 9-AGNRs ; polarisation Raman spektroskopi PRS ; temperaturberoende Raman spektroskopi; termisk känslighet; termisk stabilitet; Grüneisen parameter χ ; anharmoniciteter; vibrationslägen G; D; RBLM .;

    Abstract : This report employs advanced Raman spectroscopy techniques to investigate the fundamental properties of 9-AGNRs comprehensively. It is divided into two main sections addressing distinct aspects of 9-AGNR behavior. In the first section, Polarization Raman spectroscopy (PRS) probes phonon mode symmetries in 9-AGNRs. READ MORE

  3. 2. Synthesis of Graphene - Carbon Nanotube Hybrid Structures

    University essay from KTH/Skolan för elektroteknik och datavetenskap (EECS)

    Author : Aniruddha Paul; [2021]
    Keywords : Graphene; Carbon nanotubes; Graphene-CNT hybrid structures; Chemical Vapor Deposition CVD ; Grafen; Kolnanorör; Grafen-CNT-hybridstrukturer; Kemisk ångdeposition CVD ;

    Abstract : Graphene and Carbon nanotubes (CNTs) have been researched for more than a decade due to their extraordinary properties and advantages towards applications like electronics, structural re-enforcements, thermal management and energy storage. Graphene-CNT hybrid structures have been predicted to further enhance the exceptional properties and overcome some of the shortcomings of the individual materials. READ MORE

  4. 3. Synthesis of single-layer graphene and studying oxidation behaviour of copper foil.

    University essay from Umeå universitet/Institutionen för fysik

    Author : Mouna Rafei; [2020]
    Keywords : ;

    Abstract : The ultimate aim of the current study is to investigate the electron transfer from copper (Cu) to single layer graphene through a thin Cu oxide layer. Therefore the project is divided into two main parts. READ MORE

  5. 4. Characterization of graphene-based sensors for forensic applications : Evaluating suitability of CVD graphene-based resistive sensor for detection of amphetamine

    University essay from KTH/Skolan för elektroteknik och datavetenskap (EECS)

    Author : Ülle-Linda Talts; [2019]
    Keywords : Sensor systems; Chemical sensors; Nanosensors; Drug screening; Nanomaterials; Sensorsystem; Kemiska sensorer; Nanosensorer; Drug screening; Nanomaterial;

    Abstract : Recent improvements in sensor technology and applications can be partly attributed to the advancements in microand nanoscale fabrication processes and discovery of novel materials. The emergence of reliable and inexpensive methods of production of monolayer materials, such as graphene, has revealed the advantageous electronic properties which when utilized in sensory elements can significantly enhance response to the input signal. READ MORE

  6. 5. Graphene Growth through Chemical Vapor Deposition - Optimization of Growth and Transfer Parameters

    University essay from Umeå universitet/Institutionen för fysik

    Author : Adam Olsson; [2017]
    Keywords : Graphene; Chemical Vapor Deposition; CVD; Acetylene; Copper; Graphene transfer;

    Abstract : The goal of this thesis work is to investigate the possibility to grow graphene by Chemical Vapor Deposition (CVD) on copper foil with acetylene as a precursor and varigon (5\% H$_2$ in Ar) as a carrier gas. The possibility of nitrogen doping by ammonia treatment during the growth process is also investigated. READ MORE