Essays about: "biophotonics"

Showing result 1 - 5 of 13 essays containing the word biophotonics.

  1. 1. Elastic hyperspectral lidar for detecting coherent backscatter from insects

    University essay from Lunds universitet/Förbränningsfysik; Lunds universitet/Fysiska institutionen

    Author : Lauro Müller; [2022]
    Keywords : Nanosopy; Thin film physics; Hyperspectral; Lidar; Super continuum; Insects; Coherent scattering; Infrared Spectroscopy; Hyperspectral Imaging; Biophotonics; Technology and Engineering;

    Abstract : Insects play a major role in the ecosystem and are an important factor for biodiversity. Using laser remote sensing to distinguish and monitor the millions of insects in-situ, holds large potential to speed up and improve the otherwise time consuming process of trapping and subsequent analysis. READ MORE

  3. 2. In-vivo assessment of unwanted tissue heating during near infrared laser light emission

    University essay from Lunds universitet/Atomfysik; Lunds universitet/Fysiska institutionen

    Author : Martin Molin; [2020]
    Keywords : tissue heating; laser heating; NIR window; biophotonics; spectroscopy; Medicine and Health Sciences;

    Abstract : In this work, potential adverse tissue heating in conjunction with near infrared (NIR) laser spectroscopy was studied. The tissue heating from laser light within the NIR optical window is currently a relatively unexplored field. READ MORE

  4. 3. High Accuracy Relative Luminescence Quantum Yield Measurements of Upconverting Nanoparticles

    University essay from Lunds universitet/Fysiska institutionen; Lunds universitet/Atomfysik

    Author : Björn Thomasson; [2016]
    Keywords : Upconverting Nanoparticles; Biomedical imaging; Luminescence tomography; Luminescence imaging; Engineering; Physics; Engineering Physics; Photonics; Cancer; Cancer detection; Cancer diagnostics; Laser Engineering; quantum yield; imaging; upconverting; Biophotonics; Single Point Tomography; Relative Luminescence Quantum Yield Measurements; Energy transfer upconversion; Nanoscience; Luminescence; Imaging of biological tissue; Upconversion; Beam profile evaluation; Beam profile; UCNP; UCNPs; Nanoparticles; Technology and Engineering;

    Abstract : The name Upconverting nanoparticles refers to a novel category of luminescence emitters that are capable of generating visible luminescence upon excitation with noncoherent and longer wavelength monochromatic near-infrared light, at excitation fluence rates as low as 1-103 W/cm2. This unique optical behaviour is of great interest to researchers as it could potentially allow for virtually autofluorescence free luminescence imaging of living tissue. READ MORE

  5. 4. Development of an Upconverting Nanoparticles Quantum Yield Measurement System

    University essay from Lunds universitet/Atomfysik; Lunds universitet/Fysiska institutionen

    Author : Meng Li; [2016]
    Keywords : UCNPs; upconverting nanoparticles; QY; quantum yield; fluorescence; luminescence; Physics and Astronomy;

    Abstract : Fluorescence imaging is a growing biomedical technique; it can be used to localize the luminescent biomarkers inside the tissue. Lanthanide-doped upconverting nanoparticles (UCNPs) are promising luminescent probes for multiple applications in biophotonics. They allow acquiring autofluorescence-free recordings with high spatial resolution. READ MORE

  6. 5. Diffuse Reflectance Spectroscopy: Using a Monte Carlo method to determine chromophore compositions of tissue

    University essay from Lunds universitet/Atomfysik; Lunds universitet/Fysiska institutionen

    Author : Lisa Kobayashi Frisk; [2016]
    Keywords : Photonics; Biophotonics; Diffuse Reflectance; Spectroscopy; Monte Carlo; Diffusion; Physics and Astronomy;

    Abstract : In this work, inverse diffusion equation and Monte Carlo methods are used in conjunction with diffuse reflectance spectroscopy to develop a protocol for evaluating the chromophore compositions of tissue mimicking liquid phantoms. A novel two spectrometer system is used which provides real time calibration of any intensity fluctuations of the light source. READ MORE