Sökning: "silicon area"

Visar resultat 21 - 25 av 177 avhandlingar innehållade orden silicon area.

1. 21. Mid-infrared photonic devices for on-chip optical gas sensing

   Författare :Floria Ottonello Briano; Kristinn B. Gylfason; Delphine Marris-Morini; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; mid-infrared; mid-IR; photonics; silicon photonics; gas sensing; optical sensing; optical gas sensing; spectroscopy; absorption; dispersion; carbon dioxide; CO2; CO2 sensing; trace gas; ethanol sensing; alcohol sensing; waveguide; photonic waveguide; ring resonator; nanowire; nanoheater; emitter; thermal source; bolometer; microbolometer; thermal detector; high frequency; 3 omega method; plasmonic; platinum; Kanthal; silicon-on-insulator; micro-electro-mechanical systems MEMS ; microfabrication; microsystems; microtechnology; nanotechnology; Optik och fotonik; Optics and Photonics; Electrical Engineering; Elektro- och systemteknik;

   Sammanfattning : Gas detection is crucial in a wide range of fields and applications, such as safety and process control in the industry, atmospheric sciences, and breath diagnostics. Optical gas sensing offers some key advantages, compared to other sensing methods such as electrochemical and semiconductor sensing: high specificity, fast response, and minimal drift. LÄS MER

3. 22. Fractionation of the stable silicon isotopes : analytical method developments and selected applications in geochemistry

   Författare :Emma Engström; Luleå tekniska universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Applied Geology; Tillämpad geologi;

   Sammanfattning : During the last few decades, variations in the 'natural' isotopic abundances of stable elements (termed 'fractionation') have received considerable interest from the scientific community. Though analytical methods and techniques for the measurement of isotopic abundances with adequate figures of merit have been available for light elements (e.g. LÄS MER

4. 23. Luminescent Silicon Nanocrystals: From Single Quantum Dot to Light-harvesting Devices

   Författare :Jingjian Zhou; Ilya Sychugov; Jan Linnros; Peter Schall; KTH; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; silicon quantum dots; photoluminescence; quantum yield; internal quantum efficiency; luminescent solar concentrator; Optics and Photonics; Optik och fotonik;

   Sammanfattning :       Silicon (Si) serves as the basic material of the system-on-a-chip industry and photovoltaic panels nowadays. This is mostly thanks to its high abundance in the earth’s crust, thereby low cost, virtually non-toxicity, and superior stability. LÄS MER

5. 24. Implementation of Flash Analog-to-Digital Converters in Silicon-on-Insulator Technology

   Författare :Erik Säll; Mark Vesterbacka; Bengt E. Jonsson; Linköpings universitet; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; flash analog-to-digital converter; ADC; silicon-on-insulator; SOI; top-down design; dynamic element matching; DEM; thermometer-to-binary encoder; flash ADC modeling; Electronics; Elektronik;

   Sammanfattning : High speed analog-to-digital converters (ADCs) used in, e.g., read channel and ultra wideband (UWB) applications are often based on a flash topology. The read channel applications is the intended application of this work, where a part of the work covers the design of two different types of 6-bit flash ADCs. LÄS MER

7. 25. Implementation of Flash Analog-to-Digital Converters in Silicon-on-Insulator CMOS Technology

   Författare :Erik Säll; Mark Vesterbacka; Bengt E. Jonsson; Linköpings universitet; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; analog-to-digital converters; ADC; silicon-on-insulator; SOI; Electronics; Elektronik;

   Sammanfattning : A 130 nm partially depleted silicon-on-insulator (SOI) complementary metal oxide semiconductor (CMOS) technology is evaluated with respect to analog circuit implementation. We perform the evaluation through implementation of three flash analog-to-digital converters (ADCs). LÄS MER