Search for dissertations about: "VLS"

Showing result 1 - 5 of 20 swedish dissertations containing the word VLS.

  2. 1. Nanoscale Crystal Growth: The Importance of Interfaces and Phase Boundaries Kristallväxt på Nanometer Skala: Vikten av Ytor och Gränser

    Author : Brent Wacaser; Fasta tillståndets fysik; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; kristallografi; fasjämvikt; Semiconductory physics; Halvledarfysik; thermal and mechanical properties; crystallography; phase equilibria; Kondenserade materiens egenskaper:struktur; egenskaper termiska och mekaniska ; Condensed matter:stucture; Fysik; Physics; epitaxy; VLS; MOVPE; CBE; nanostructures; crystal growth; nanowires; III-V semiconductors; growth mechanism; MBE; Material technology; Materiallära; materialteknik;

    Abstract : Surfaces and interfaces have a special significance to nanotechnology because the surface/volume ratio of nanomaterials is larger than for bulk materials. Therefore, interfaces of nanomaterials are usually more important to the properties of nanomaterials than for larger scale materials. READ MORE

  4. 2. Epitaxial growth of semiconductor nanowires

    Author : Ann Persson; Fasta tillståndets fysik; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; materialteknik; nanowires; nanostructures; growth mechanism; Materiallära; Material technology; Halvledarfysik; Semiconductory physics; nanoelectronics; Au; VSS; VLS; surface diffusion; band gap engineering; InP; ternary system; GaAs; heterostructures; InAs; CBE; epitaxy;

    Abstract : This thesis describes the results obtained from investigations carried out on epitaxially grown III-V semiconductor nanowires aimed at improving our understanding of and knowledge on the growth mechanism of nanowires. This is important to be able to control their growth, in order to make future applications possible. READ MORE

  5. 3. Preparation and characterisation of refractory whiskers and selected alumina composites

    Author : Mats Carlsson; Mats Johnsson; Tor Grande; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; VLS-growth; Characterisation; Whiskers; Sintering; Ceramic composites; Inorganic chemistry; Oorganisk kemi;

    Abstract : A whisker is a common name of single crystalline inorganic fibre of small dimensions, typically 0.5-1 μm in diameter and 20-50 μm in length. Whiskers are mainly used as reinforcement of ceramics. This work describes the synthesis and characterisation of new whisker types. READ MORE

  6. 4. Silicon nanowire based devices for More than Moore Applications

    Author : Ganesh Jayakumar; Per-Erik Hellström; Mikael Östling; Luca Selmi; KTH; []
    Keywords : silicon nanowire; biosensor; CMOS; sequential integration; lab-on-chip; LOC; high-K; high-K integration on SiNW biosensor; ALD; fluid gate; back gate; SiNW; SiNW pixel matrix; FEOL; pattern transfer lithography; sidewall transfer lithography; STL; multi-target bio detection; BEOL; nanonets; silicon nanonets; SiNN-FET; SiNW-FET; CMOS integration of nanowires; CMOS integration of nanonets; monolithic 3D integration of nanowires; above-IC integration of nanowires; DNA detection using SiNW; SiNW biosensor; dry environment DNA detection; DNA hybridization detection using SiNW; SiNW functionalization; SiNW silanization; SiNW grafting; FEOL integration of SiNW; BEOL integration of SiNW; sequential multiplexed biodetection; biodetection efficiency of SiNW; front end of line integration of SiNW; back end of line integration of SiNW; SiNW dry environment functionalization; APTES cross-linker; accessing SiNW test site; fluorescence microscopy of SiNW; geometry of SiNW; SiNW biosensor variability; top-down fabrication of SiNW; bottom-up fabrication of SiNW; VLS method; ams foundry CMOS process; adding functionality in BEOL process; sensor integration in BEOL process; hafnium oxide; HfO2; aluminium oxide; Al2O3; TiN backgate; Nickel source drain; ISFET; ion sensitive field effect transistor; Overcoming Nernst limit of detection using SiNW; SiNW sub-threshold region operation; ASIC; SOC; SiGe selective epitaxy; epitaxial growth of SiNW; epitaxial growth of nanowires; epitaxial growth of nanonets; nickel silicide contacts; salicide process; high yield SiNW fabrication; high volume SiNW fabrication; silicon ribbon; SiRi pixel; SiRi biosensor; SiRi DNA detection; monolithic 3D integration of nanonets; above-IC integration of nanonets; impact of back gate voltage on silicon nanowire; impact of back gate voltage on SiNW; FDSOI; fully depleted silicon on insulator technology; metal backgate; wafer scale integration of SiNW; wafer scale integration of nanonets; impact of backgate voltage on CMOS inverter circuit; frequency divider; D flip-flop; Informations- och kommunikationsteknik; Information and Communication Technology;

    Abstract : Silicon nanowires (SiNW) are in the spotlight for a few years in the research community as a good candidate for biosensing applications. This is attributed to their small dimensions in nanometer scale that offers high sensitivity, label-free detection and at the same time utilizing small amount of sample. READ MORE

  7. 5. Carbothermal synthesis of transition metal carbide and carbonitride whiskers via a Vapour-Liquid-Solid (VLS) growth mechanism

    Author : Niklas Ahlén; Jan Otto Carlsson; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; oorganisk kemi; Inorganic Chemistry;

    Abstract : A route for the synthesis of TiC, TiCyN1-y, TaxTi1-xC and TaxTi1-xCyN1-y whiskers via a carbothermal Vapour-Liquid-Solid (VLS) growth mechanism, yielding 70-90 vol.% whiskers, has been established. The whiskers were uniform in diameter (0.3-0. READ MORE