Sökning: "lasers"

Visar resultat 21 - 25 av 130 uppsatser innehållade ordet lasers.

1. 21. Lights for democracy: lighting as a tool for Brazilian political protests

   Magister-uppsats, KTH/Ljusdesign

   Författare :Helena Peres Caixeta Silva; [2022]
   Nyckelord :Brazilian protests; lighting; lights for democracy; projections; political lighting;

   Sammanfattning : This paper investigates the role of artificial light as a tool for spread a political message, focusing on Brazilian political scenario. Given the recent context of the weakening of many democratic institutions around the world together with Covid-19 pandemic, new ways of protesting have been transforming the character of political demonstrations. LÄS MER

3. 22. Synchrotrons as a Source for Soft X-Ray Lithography

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

   Författare :Thomas Joseph Grandsaert Jr; [2021]
   Nyckelord :Physics and Astronomy;

   Sammanfattning : To move to lower modes in extreme ultra-violet lithography (EUVL) technology (and keep up with Moore’s law), new sources of soft X-ray radiation must be developed. It is clear from previous studies that Free Electron Lasers (FELs) can easily meet the in-band power requirements at these lower wavelength modes, however detailed studies for insertion devices (undulators) as a soft X-ray lithography (SXL) source are due for a re-evaluation. LÄS MER

4. 23. Simulation of THz Quantum Cascade Lasers

   Master-uppsats, Lunds universitet/Matematisk fysik; Lunds universitet/Fysiska institutionen

   Författare :Viktor Rindert; [2021]
   Nyckelord :Physics and Astronomy;

   Sammanfattning : Quantum Cascade Lasers (QCLs) have since their invention in 1994 become a crucial source for mid-infrared and THz radiation. Mid-infrared QCLs have achieved room temperature operation while THz QCLs have not. As such, simulations are an important tool in order to achieve a THz QCL operational at room temperature. LÄS MER

5. 24. The visibility of double neutron star binaries to LISA

   Kandidat-uppsats, Lunds universitet/Astronomi - Genomgår omorganisation

   Författare :Anatole Storck; [2021]
   Nyckelord :gravitational waves; LISA; neutron stars; orbital simulations; Runge-Kutta method; Physics and Astronomy;

   Sammanfattning : Double neutron star binaries (DNSBs) in the mHz gravitational wave (GW) regime are an important group of objects which the GW detector LISA will be able to observe. The detection and parametrization of these objects will help develop our current understanding of neutron star formation and evolution. LÄS MER

7. 25. Comparing the Effectiveness of Punching to Laser Cutting in UltraHigh Strength Steel

   Kandidat-uppsats, KTH/Materialvetenskap

   Författare :Felix Öhman; [2021]
   Nyckelord :;

   Sammanfattning : This study examines the efficiency of punching compared to laser cutting in sheets of Ultra High Strength Steel (UHSS). The study was conducted to determine which process is more efficient with respect to sheet thickness, where the quality of the cut edge is also taken into consideration of whether punching is recommended over laser cutting. LÄS MER