Sökning: "Raman spectroscopy"

Visar resultat 11 - 15 av 111 uppsatser innehållade orden Raman spectroscopy.

  1. 11. Structural modifications of polyester fibres induced by thermal and chemical treatments to obtain high-performance fibres

    Master-uppsats, KTH/Fiber- och polymerteknologi

    Författare :Kartikeya Sharma; [2021]
    Nyckelord :PET fibres; P3HB fibres; Radial gradient; Chemical modification; Thermal annealing; High-performance fibres; PET-fibrer; P3HB-fibrer; Radiell lutning; Kemisk modifiering; termisk glödgning; högpresterande fibrer;

    Sammanfattning : Del A: Polyetylentereftalat fibrer I detta arbete presenteras olika metoder för att framställa monofilament av polyetylentereftalat (PET) (diameter: 30-50 µm) med en radiell gradient. Nyutvecklad Raman-spektroskopiteknik har använts för att kartlägga dessa inducerade radiella gradienter i t.ex. kristallinitet. LÄS MER

  3. 12. Quantification using SERS on a colloidal substrate

    Uppsats för yrkesexamina på avancerad nivå, Uppsala universitet/Fasta tillståndets fysik

    Författare :Kasper Eliasson; [2021]
    Nyckelord :SERS; spectrometry; nano technology; plasmonics;

    Sammanfattning : This thesis explores the practical usefulness of surface enhanced Raman spectroscopy on a colloidal substrate for quantification of organic analytes in a water matrix. The method evaluated is very simple and accessible as it utilizes a commercially available hand held Raman spectrometer and citrate reduced silver colloid substrate. LÄS MER

  4. 13. Reconstruction of Hyperspectral Images Using Generative Adversarial Networks

    Master-uppsats, Linköpings universitet/Reglerteknik

    Författare :Jacob Eek; [2021]
    Nyckelord :Coded aperture snapshot spectral imaging; CASSI; Raman; Raman spectroscopy; Explosive; Detection; Hyperspectral Image; HSI; Compressed sensing; Compressive Sensing; CS; Machine Learning; Reconstruction; Inverse problem; Generative Adversarial Network; GAN; CGAN; BEGAN; Latent variable optimization;

    Sammanfattning : Fast detection and identification of unknown substances is an area of interest for many parties. Raman spectroscopy is a laser-based method allowing for long range no contact investigation of substances. LÄS MER

  5. 14. Raman spectroscopy in neurosurgery

    Uppsats för yrkesexamina på avancerad nivå, Luleå tekniska universitet/Institutionen för teknikvetenskap och matematik

    Författare :Saga Bergqvist; [2020]
    Nyckelord :Raman spectroscopy; brain tumor; diagnosis;

    Sammanfattning : Brain tumors or brain cancer is a disease than affects people of all ages. The median age of a person living with a brain tumor is 60 years, it is however a disease that affects children and young adults in high grade. LÄS MER

  7. 15. Raman Spectroscopy for Characterizing Porous carbon

    Magister-uppsats, Lunds universitet/Fysiska institutionen; Lunds universitet/Förbränningsfysik

    Författare :Rima Zuriah Amdani; [2020]
    Nyckelord :Raman Spectroscopy; Porous Carbon; Biochar; Carbonization; Aromaticity; Physics and Astronomy; Technology and Engineering; Chemistry;

    Sammanfattning : Porous carbon obtained from low cost and abundant biomass has gained attention as renewable material feedstock. In this study, porous carbon biochar produced through pyrolysis was investigated by Raman spectroscopy to disclose the structural properties. LÄS MER