Essays about: "nära infrarött ljus"

Showing result 1 - 5 of 10 essays containing the words nära infrarött ljus.

1. 1. Photo-physical properties of up-converting NaYF4:Yb-Er,Yb-Mn nanocrystals

   University essay from KTH/Tillämpad fysik

   Author : Hongjian Wu; [2022]
   Keywords : Appled Physics; Tillämpad fysik;

   Abstract : Rare earth-doped upconversion nanoparticles can emit light with various wavelength from ultraviolet to infrared when excited by near-infrared light. The superior properties including long luminescence lifetime, narrow emission spectra, low toxicity and high chemical stability makes it a promising optical material in bioimaging and other applications. READ MORE

3. 2. CNN-Based Methods for Tree Species Detection in UAV Images

   University essay from Linköpings universitet/Datorseende

   Author : Olle Sievers; [2022]
   Keywords : Machine Learning; CNN; UAV; Tree Species; Deep Learning; Tree Species Detection; Detection;

   Abstract : Unmanned aerial vehicles (UAVs) with high-resolution cameras are common in today’s society. Industries, such as the forestry industry, use drones to get a fast overview of tree populations. READ MORE

4. 3. Towards a high resolution view of infrared line formation

   University essay from Lunds universitet/Astronomi - Genomgår omorganisation

   Author : Martin Schmidt Montelius; [2021]
   Keywords : Spectroscopy; Near infrared; K giants; Galactic archeaology; Galactic chemical evolution; Abundances; Milky Way; Physics and Astronomy;

   Abstract : Observing in the infrared has many benefits, such as seeing through the interstellar dust in the galaxy, easier use of adaptive optics, and better flux ratios for direct observations of exoplanets. Before the infrared spectral range can be utilised for highly accurate stellar spectroscopy there is a need for a better understanding of both stellar modelling and the atomic physics that go into forming spectral lines. READ MORE

5. 4. Towards the detection of single photons in the mid-infrared

   University essay from KTH/Tillämpad fysik

   Author : Bruno Lopez; [2021]
   Keywords : mid-infrared; single-photon; superconducting; nanowire; nanotechnology; quantum technologies; imaging; mitten av infraröd; enfoton; supraledande; nanotråd; nanoteknik; kvantteknologi; avbildning;

   Abstract : In this project, the fabrication of single-photon detectors based on superconducting nanowires is presented, with great focus on extending their operation range to the mid infrared. In particular, Niobium Titanium Nitride (NbTiN) and Molybdenum Silicide (MoSi), superconducting materials with different properties, are presented, studied and used as fabrication platforms. READ MORE

6. 5. 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