Sökning: "Two-dimensional spectroscopy"

Visar resultat 1 - 5 av 6 uppsatser innehållade orden Two-dimensional spectroscopy.

  1. 1. Study of the vibronic mixing in chlorophylls with multidimensional spectroscopy

    L3-uppsats, Lunds universitet/Kemiska institutionen

    Författare :Ignacio Martínez Casasús; [2021]
    Nyckelord :Two-dimensional spectroscopy; Ultrafast spectroscopy; Chlorophyll a; Chlorophylls; Photosynthesis; Light harvesting; Vibronic mixing; Quantum coherence; Chemical physics; Chemistry;

    Sammanfattning : Chlorophylls comprise one of the most important families of molecules for the photosynthetic process. Chlorophyll-like molecules have been classically interpreted under the Gouterman model, being thought to feature two independent transitions, Qy(S1) and Qx(S2). LÄS MER

  2. 2. Aqueous self-assembly behaviour alteration derived from primary structure changes of model peptides

    Master-uppsats, Lunds universitet/Kemiska institutionen

    Författare :Marcus Bäcklund; [2020]
    Nyckelord :Model peptides; self-assembly; SAXS; FTIR; CD; physical chemistry; fysikalisk kemi; Chemistry;

    Sammanfattning : Understanding of the self-assembly behaviour of peptides is of great interest within several different areas such as neurodegenerative diseases, biotechnology, and peptide pharmaceuticals. In this work we have compared the impact on the self-assembly behaviour derived from systematic changes of the primary structure of A8K, where A denotes alanine and K lysine. LÄS MER

  3. 3. Development of 3D Spectrometry using Compressive Sensing

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

    Författare :Jonas Ravelid; [2018]
    Nyckelord :Compressive Sensing; 3D; Spectroscopy; Imaging; Multi-spectral; CS; TwIST; Mask; Physics and Astronomy;

    Sammanfattning : Multi-spectral imaging is a powerful approach in spectral analysis of objects with spatial details. However, such approaches are most often time consuming and experimentally complex since both spectral and spatial information in two dimensions are to be resolved. LÄS MER

  4. 4. Compression and Shaping of Femtosecond Laser Pulses for Coherent Two-Dimensional Nanoscopy

    Master-uppsats, Lunds universitet/Fysiska institutionen; Lunds universitet/Synkrotronljusfysik

    Författare :Lukas Wittenbecher; [2016]
    Nyckelord :Femtosecond pulse shaping; Ultrafast optics; Liquid crystal spatial light modulator; Coherent two-dimensional nanoscopy; Dispersion compensation; Physics and Astronomy;

    Sammanfattning : Femtosecond pulse shaping is a versatile tool that enables the generation of ultrashort laser pulses with nearly arbitrary temporal shapes. Among others, the technique is of use in ultrafast spectroscopy experiments where it can be employed for dispersion control and the generation of well-defined laser pulse sequences. LÄS MER

  5. 5. Design and Implementation of a 2-Channel High Precision and High Speed Digitizing system

    Master-uppsats, Lunds universitet/Institutionen för elektro- och informationsteknik

    Författare :Albert Llimós Muntal; [2016]
    Nyckelord :Analog; Digital; ADC; Digitizing; data acquisition; two channel; precision; resolution; speed; Technology and Engineering;

    Sammanfattning : Recently, new spectroscopic techniques have been developed such as photocurrent detected two-dimensional spectroscopy [1], which measure the response from a sample that is excited by a high intensity laser pulses. The responses are linear and nonlinear signals that have very different amplitudes; the linear signal can be from 103 to 105 times larger than the nonlinear signal. LÄS MER