Sökning: "Understanding technology"

Visar resultat 1 - 5 av 4875 avhandlingar innehållade orden Understanding technology.

1. 1. Environing Technology : Swedish Satellite Remote Sensing in the Making of Environment 1969–2001

   Författare :Johan Gärdebo; Nina Wormbs; Sabine Höhler; Edward Jones-Imhotep; KTH; []
   Nyckelord :HUMANITIES; HUMANIORA; HUMANIORA; HUMANITIES; COPUOS; environing; environmental diplomacy; infrastructure; satellite remote sensing; SPOT; Spot Image; sustainable development; Sweden; Swedish Space Corporation; History of Science; Technology and Environment; Historiska studier av teknik; vetenskap och miljö;

   Sammanfattning : The state-owned Swedish Space Corporation established a satellite remote sensing infrastructure and defined uses for the technology both within and beyond Sweden during the latter part of the twentieth century. This thesis studies Swedish satellite remote sensing as an environing technology – a technology that environs, that produces environments and our perceptions of the environment. LÄS MER

3. 2. Tailoring the Optical Response of III-V Nanowire Arrays

   Författare :Mahtab Aghaeipour; Håkan Pettersson; Mats-Erik Pistol; Nicklas Anttu; Lars Samuelson; Constance J. Chang-Hasnain; NanoLund: Center for Nanoscience; []
   Nyckelord :NATURAL SCIENCES; NATURVETENSKAP; NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; III-V nanowires; absorption; optical modes; photovoltaics; III-V nanowires; absorption; optical modes; photovoltaics; Fysicumarkivet A:2017:Aghaeipour;

   Sammanfattning : Semiconductor nanowires show a great deal of promise for applications in a wide range of important fields, including photovoltaics, biomedicine, and information technology. Developing these exciting applications is strongly dependent on understanding the fundamental properties of nanowires, such as their optical resonances and absorption spectra. LÄS MER

4. 3. InGaAs Nanowire and Quantum Well Devices

   Författare :Lasse Södergren; NanoLund: Center for Nanoscience; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; nanowire; quantum well; cryogenic; III-V; InGaAs; MOSFET; MOVPE; Hall; mobility; ballistic; RF;

   Sammanfattning : To fulfill the increasing demand for high-speed electronics used for computation or communication is one everlasting challenge for the semiconductor industry. Emerging fields such as quantum computation also has a need for circuits operating at cryogenic temperatures. LÄS MER

5. 4. Optical Studies of Polytypism in GaAs Nanowires

   Författare :Neimantas Vainorius; NanoLund: Center for Nanoscience; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Photoluminescence; Raman scattering; Polytypism; Quantum confinement; GaAs nanowires; Fysicumarkivet A:2017:Vainorius;

   Sammanfattning : Semiconductor nanowires are often regarded as having potential to be building blocks for novel applications. Their geometry allows defect-free combinations of materials that have a high degree of lattice mismatch. III-V semiconductor nanowires can also be grown in the wurtzite crystal phase, which is not stable in bulk material or thin films. LÄS MER

7. 5. Growth of Semiconductor Nanowires for Solar Cell Applications

   Författare :Magnus Heurlin; Fasta tillståndets fysik; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; TEKNIK OCH TEKNOLOGIER; NATURAL SCIENCES; ENGINEERING AND TECHNOLOGY; MOVPE; Aerotaxy; III-V semiconductor materials; nanowire; solar cells; photovoltaics; Fysicumarkivet A:2015:Heurlin;

   Sammanfattning : Nanowires have the ability to absorb light much more efficient than conventional thin film layers. This makes them candidates for the development of new types of solar cells that have higher efficiency and lower material usage than current technologies. LÄS MER