Essays about: "upconversion nanoparticles"

Found 4 essays containing the words upconversion nanoparticles.

1. 1. Impact of nanoparticle plasmons on photoluminescense and upconversion processes in ZnO

   University essay from Uppsala universitet/Solcellsteknik; Uppsala universitet/Fysikalisk kemi

   Author : Axel Gudmundsson; [2023]
   Keywords : Photoluminescence; Upconversion; Plasmons; ZnO;

   Abstract : The increasing prevalence of glass windows in modern buildings has raised the demand for solar control windows that possess climate-appropriate properties. Glass windows made of abundant and low-cost materials which can both decrease the heating energy consumption as well as enhance the light climate indoors would sufficiently meet the goals of economical yet uplifting buildings. READ MORE

3. 2. 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

4. 3. Dye sensitzation effects on lanthanide upconversion nanoparticles

   University essay from KTH/Fysik

   Author : Dag Albin Bäck; Andreas Jörgensen; [2022]
   Keywords : Dye sensitization; lanthanide upconversion nanoparticles; upconversion nanoparticles; UCNP; IR806;

   Abstract : In this report we studied the properties of the dye IR806 and possible mechanisms of the dye sensitization effect on ytterbium-erbium co-doped upconversion nanoparticles. We found that the dye IR806 has two primary emission peaks in the NIR spectral range at around 850 nm and at around 950 nm. READ MORE

5. 4. 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