Essays about: "optics"

Showing result 36 - 40 of 203 essays containing the word optics.

  1. 36. Numerical Simulations of Wave Propagation between a Left-Handed Material and a Right-Handed Material

    University essay from KTH/Skolan för elektroteknik och datavetenskap (EECS)

    Author : Balwan Rana; [2021]
    Keywords : Negative-Index Material; NIM; Positive-Index Material; RHM; Backward- Wave Propagation; Step-Index Interface; Graded-Index Interface; Left-Handed Material; LHM; Right-Handed Material; RHM; Analytical Solution; Validation; Negativt-Index Material; NIM; Positivt-Index Material; PIM; Bakåtvåg-utbredning; Steg-Index Gränssnitt; Gradering-Index Gränssnitt; Vänsterhänt Material; LHM; Högerhänt Material; RHM; Analytisk Lösning; Validering;

    Abstract : The discovery of metamaterials has led to major advances in different fields of physics including optics, microwave engineering and acoustics. Specific to theoretical electromagnetism, the introduction of metamaterials have led to the development of negative-index materials (NIMs) with simultaneous negative permittivity and negative permeability with backward-wave propagation. READ MORE

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

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

    Author : Thomas Joseph Grandsaert Jr; [2021]
    Keywords : Physics and Astronomy;

    Abstract : 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. READ MORE

  4. 38. Structural Investigations of Novel Heliostat Designs based upon the Hydraulic Infinite Linear  Actuator (HILA)

    University essay from Linköpings universitet/Mekanik och hållfasthetslära

    Author : Venkata Nikhil Nandigama; [2021]
    Keywords : Structural Analysis; Heliostat; Mechanics; Topology optimization; Finite element methods; concentrated solar power; renewable energy.;

    Abstract : A heliostat is a device that reflects the sun’s rays to a stationary object. There are two different types of heliostat serial and parallel type. The most used is the serial type of heliostat with Azimuthal-Elevation(Az-El) drive. READ MORE

  5. 39. Venous Component Separation From a Pulse Oximeter Signal using Blind Source Separation with Ultrasound Imaging as Reference

    University essay from Lunds universitet/Avdelningen för Biomedicinsk teknik

    Author : Björn Walter; Stefan Piiroinen; [2021]
    Keywords : Photoplethysmogram; PPG; Ultrasound; Blind Source Separation; PCA; SOBI; venous component; Technology and Engineering;

    Abstract : Intradialytic hypotension (IDH) is a major drawback of haemodialysis and occurs in more than every fifth dialysis treatment. There is a need for real-time measurement, with an ability to detect IDH before it occurs. Photoplethysmography (PPG) may provide sufficient information about hemodynamic status to prevent IDH. READ MORE

  6. 40. Designing an Aftermarket Head Up Display

    University essay from KTH/Skolan för industriell teknik och management (ITM)

    Author : Leo Södergren; [2021]
    Keywords : Head Up Display; HUD; Automotive; Road safety; Nomadic device; Optics; Product development; Head Up Display; HUD; Automotive; Road safety; Nomadic device; Optics; Product development;

    Abstract : Road safety is one of the world’s largest challenges. New technologies have made roads both safer, but also more dangerous as people to a greater extent drive distracted. The Swedish startup Consenz AB aims to solve this by creating a hardware/software system of connected Head Up Displays (HUDs). READ MORE