Search for dissertations about: "electrical contact"

Showing result 1 - 5 of 268 swedish dissertations containing the words electrical contact.

  1. 1. High resolution electrical characterization of III-V materials and devices

    Author : Olivier Douheret; Srinivasan Anand; Wilfried Vandervorst; KTH; []
    Keywords : ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; Electrical engineering; condensed matter; electrics; electrical; materials science; Elektroteknik; elektronik och fotonik; Electrical engineering; electronics and photonics; Elektroteknik; elektronik och fotonik;

    Abstract : The continuing shrinkage of semiconductor devices towards nanoscale features and increased functionality has prompted a strong need for high-resolution characterization tools capable of mapping the electrical properties with nanoscale lateral resolution. In this regard, scanning capacitance microscopy (SCM) scanning spreading resistance microscopy (SSRM) and Kelvin probe force microscopy (KPFM) have emerged as powerful techniques. READ MORE

  2. 2. Synthesis, Characterization, and Evaluation of Ag-based Electrical Contact Materials

    Author : Fang Mao; Ulf Jansson; Mikael Olsson; Uppsala universitet; []
    Keywords : ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; electrical contact; bulk; coating; Ag-based alloys; Ag-based delafossite; AgI; graphene; graphene oxide; combinatorial material science; dc magnetron sputtering; friction; wear; hardness; contact resistance;

    Abstract : Ag is a widely used electrical contact material due to its excellent electrical properties. The problems with Ag are that it is soft and has poor tribological properties (high friction and wear in Ag/Ag sliding contacts). READ MORE

  3. 3. Microwave Frequency Stability and Spin Wave Mode Structure in Nano-Contact Spin Torque Oscillators

    Author : Anders Eklund; B. Gunnar Malm; Johan Åkerman; Mikael Östling; Erik Wahlström; KTH; []
    Keywords : NATURAL SCIENCES; NATURVETENSKAP; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; NATURVETENSKAP; TEKNIK OCH TEKNOLOGIER; NATURAL SCIENCES; ENGINEERING AND TECHNOLOGY; spintronics; microwave oscillators; magnetization dynamics; spin waves; phase noise; device modelling; electrical characterization; X-ray microscopy; STXM; XMCD; Physics; Fysik; Electrical Engineering; Elektro- och systemteknik;

    Abstract : The nano-contact spin torque oscillator (NC-STO) is an emerging device for highly tunable microwave frequency generation in the range from 0.1 GHz to above 65 GHz with an on-chip footprint on the scale of a few μm. READ MORE

  4. 4. Elastic interconnection micro contact stuctures-manufacture and characterisation

    Author : Slavko Dejanovic; Mittuniversitetet; []
    Keywords : ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; elastic contact; silicone elastomer; chip socket; contact resistance; via hole; RIE; dry etch; Electrical engineering; electronics and photonics; Elektroteknik; elektronik och fotonik;

    Abstract : ...The task that was put to the author of this thesis was to find solutions for manufacturing of single elastic micro bump contacts as well as complete elastic sockets and interconnections down to the carrier substrate. READ MORE

  5. 5. Condition measuring and lifetime modelling of electrical power transmission equipment

    Author : Per Westerlund; Patrik Hilber; Tommie Lindquist; Carl-Ejnar Sölver; KTH; []
    Keywords : ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; disconnectors; circuit breakers; reliability; lifetime; electric contacts; electric power transmission; Electrical Engineering; Elektro- och systemteknik;

    Abstract : The electric grid is important in modern society, so the outages should be few. The transmission grid should have a real high availability, since it transports electrical energy across the country. Then, it is difficult to plan outages for maintenance and installation. READ MORE