Sökning: "vertical integration"

Visar resultat 41 - 45 av 119 avhandlingar innehållade orden vertical integration.

1. 41. Compound semiconductor materials and processing technologies for photonic devices and photonics integration

   Författare :Carl Reuterskiöld Hedlund; Mattias Hammar; Mikael Östling; Sebastian Lourdudoss; Harri Lipsanen; KTH; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Informations- och kommunikationsteknik; Information and Communication Technology;

   Sammanfattning : The advancement of semiconductor optoelectronics relies extensively on materials and processing technologies of ever-increasing sophistication, such as nanometer-range lithography, epitaxial growth methods with monatomic layer control, and anisotropic etching procedures that allows for the precise sculpturing of device features even in the limit of extreme aspect ratios. However, upcoming application needs puts requirements on optimized designs or device performances, e. LÄS MER

3. 42. Leveraging HVPE for III-V/Si Integration and Mid-Infrared Photonic Device Fabrication

   Författare :Axel Strömberg; Yan-Ting Sun; Sebastian Lourdudoss; Mattias Hammar; Charles Cornet; KTH; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; HVPE; III-V Si; Photovoltaics; PEC; MIR; non-linear optics; QPM; QCL; Energiteknik; Energy Technology;

   Sammanfattning : This work covers the implementation of highly specialized epitaxial techniques enabled by the near-equilibrium hydride vapor-phase epitaxy growth process in III-V/Si integration for Si-based tandem solar cells and photoelectrochemical reactions, quasi phase matching GaP structures on GaAs substrates, and regrowth of InP:Fe on quantum cascade lasing structures.III-V/Si integration is an important topic in several fields of research with a significant one being solar energy harvesting. LÄS MER

4. 43. Value Creation and Structural Change during the Third industrial Revolution. The Swedish Economy from a Vertical Perspective

   Författare :Daniel Lind; Ekonomisk-historiska institutionen; []
   Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Structural change; technology; inter-industry linkages; production processes; deindustrialization; service duality; business services; global value chains; productivity.;

   Sammanfattning : This thesis analyses structural changes and the role of technology in the Swedish economy since the 1970s. With the attention directed towards interdependencies between sectors, a vertical perspective is applied on the economy. LÄS MER

5. 44. Study on electroabsorption modulators and grating couplers for optical interconnects

   Författare :Yongbo Tang; Urban Westergren; Dries Van Thourhout; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Photonic integrated circuit; optical interconnect; transmission line; traveling-wave; electro-absorption modulator; hybrid silicon evanescent platform; grating coupler; vertical coupling scheme; optical antenna; lag effect; polarization beam splitter; Photonics; Fotonik; SRA - ICT; SRA - Informations- och kommunikationsteknik;

   Sammanfattning : Decades of efforts have pushed the replacement of electrical interconnects by optical links to the interconnects between computers, racks and circuit boards. It may be expected that optical solutions will further be used for inter-chip and intra-chip interconnects with potential benefits in bandwidth, capacity, delay, power consumption and crosstalk. LÄS MER

7. 45. Makten över regionen : En idékritisk studie av svensk regiondebatt 1963–1996

   Författare :Tobias Krantz; Urban Strandberg; Uppsala universitet; []
   Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Political science; region; demos; federalism; regionalisation; vertical distribution of power; county governors; local federations; county councils; Statsvetenskap; Political science; Statsvetenskap; statskunskap; Political Science;

   Sammanfattning : Who should exercise power over the region? A governor appointed by the central state, a directly elected regional assembly or municipalities in co-operation? For almost four decades this has been a highly contested issue in Swedish decision-making bodies as well as in editorial pages. Not least in the 1990s, as Sweden has got closer to the intensified process of European integration, has the regional question been an important subject on the political agenda. LÄS MER