Search for dissertations about: "Piezo"

Showing result 1 - 5 of 31 swedish dissertations containing the word Piezo.

  2. 1. Ultrasonic Fluid and Cell Manipulation

    Author : Mathias Ohlin; Martin Viklund; Hans Hertz; Peter Glynne-Jones; KTH; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; 3D cell culture; Acoustic streaming; Acoustofluidics; Cell manipulation; High-resolution imaging; Multi-well; Microplate; Natural killer cell; Piezo; Radiation force; Solid tumor; Solubilization; Spheroid; Standing wave; Temperature control; Transducer; Trapping; Ultrasonic; Fysik; Physics; Biological Physics; Biologisk fysik;

    Abstract : During the last decade, ultrasonic manipulation has matured into an important tool with a wide range of applications, from fundamental cell biological research to clinical and industrial implementations. The contactless nature of ultrasound makes it possible to manipulate living cells in a gentle way, e.g. READ MORE

  4. 2. A Study on Spray-Guided Stratified Charge Systems for Gasoline DI Engines

    Author : Mikael Skogsberg; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; multi-hole; DISC; direct injection; MIE; spray-guided; air-assisted; GDI; PDA; SI Engines; swirl; LIF; piezo injector;

    Abstract : Innovative technologies are required to meet ongoing challenges to reduce the CO2 emissions from passenger cars and their fuel consumption. Such technologies are usually complex and require detailed analyses to deliver efficient, reliable systems. READ MORE

  5. 3. Hollow cone gasoline/ethanol sprays under cold start conditions

    Author : Jonas Wärnberg; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; SIDI; Cold start; PIV; Piezo-injector; PDA; Ethanol; SI; SGDI; E85; Direct injection stratified charge; LIF; Spark ignition; Mie;

    Abstract : To decrease the release of CO2 from fossil fuels into the atmosphere, within the transportation sector the efficiency of vehicles and their engines must be increased. Additionally renewable fuels may be used to further decrease our reliance on fossil fuels. READ MORE

  6. 4. Low Emission Concepts for Diesel Engines

    Author : Arjan Helmantel; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; post injection; adjustable valve timing; two-colour pyrometry; Homogeneous Charge Compression Ignition; emissions; piezo injector; swirl; combustion; Diesel; HCCI; endoscope;

    Abstract : In the recent past, the Diesel engine has been improved considerably in the areas of performance, fuel efficiency and exhaust emissions. In Europe, these improvements have resulted in a strong increase in the sales of passenger cars equipped with a Diesel engine. READ MORE

  7. 5. Low phase noise voltage controlled micro- and millimeter wave oscillators

    Author : Stefan Andersson; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; radio; anti series; microstrip resonator; silicon bipolar transistor; amplitude limiter; cavity resonator; varactor; transposed gain; MESFET; automatic gain control; VCO; delay line; laser; RF; oscillation criteria; millimetre wave; oscillator; mm-wave; noise; multiplier; fibre optic; SAW; DRO; PLL; surface acoustic wave; Si BJT; 1 f noise; FM noise; HEMT; clipping diode; HBT; YIG sphere; device; terfenol; gunn diode; stabilised; YIG film; quarts crystal; phase locked loop; magnetostrictive; resonator; phase error; whispering gallery mode; sapphire resonator; Fabry-Perot resonator; PHEMT; microwave; HFET; phase noise; DR; dielectric resonator; PM noise; balanced oscillator; piezo electric; AGC; frequency discriminator;

    Abstract : .... READ MORE