Sökning: "liquid alloy"

Visar resultat 1 - 5 av 65 avhandlingar innehållade orden liquid alloy.

1. 1. Soft Intelligence : Liquids Matter in Compliant Microsystems

   Författare :Seung Hee Jeong; Zhigang Wu; Zhi-Bin Zhang; Michael D. Dickey; Uppsala universitet; []
   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; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Liquid; Elastomer; Cross-linking; Liquid alloy; PDMS; Adaptability; Compliance; Interface; Patterning; Printing; Surface energy; Wetting; Composite; Modulus; Stretchability; Viscoelasticity; Thermal conductivity; Contact resistance; Adhesion; Packaging; Integration; Microsystems; Microfluidics; Strain sensor; Thermoelectrics; Inductive coupling; Wireless communication; Stretchable electron-ics; Epidermal electronics; Skin electronics; Soft robotics; Wearable electronics; Teknisk fysik med inriktning mot mikrosystemteknik; Engineering Science with specialization in Microsystems Technology; Engineering Science with specialization in Materials Science; Teknisk fysik med inriktning mot materialvetenskap;

   Sammanfattning : Soft matter, here, liquids and polymers, have adaptability to a surrounding geometry. They intrinsically have advantageous characteristics from a mechanical perspective, such as flowing and wetting on surrounding surfaces, giving compliant, conformal and deformable behavior. LÄS MER

3. 2. Tailoring of Liquid Phase Sintering and Microstructure of Sintered Steel

   Författare :Walid Khraisat; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; thermodynamics and persistent liquid; ferrous powder; liquid forming additives; liquid phase sintering; high speed steel powder;

   Sammanfattning : The present study intends to interpret the effects of alloying elements on microstructure and mechanical properties via liquid phase sintering of iron and steel powders. The tools involved are thermodynamic modelling, tailoring of powder properties and processing, and optimisation of sintering. LÄS MER

4. 3. Direct conversion of methane-to-methanol: transition-metal dimer sites in small-pore zeolites: First-principles calculations and microkinetic modeling

   Författare :Unni Engedahl; Chalmers tekniska högskola; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; partial methane oxidation; microkinetic modeling; SSZ-13; CHA; alloy; transition metals; zeolites; density functional theory;

   Sammanfattning : Direct conversion of methane to methanol is a highly desired reaction. Partially oxidizing methane into a liquid fuel at ambient temperature and pressure would enable utilization of natural gas and biogas to a much larger extent than what is possible today. LÄS MER

5. 4. Integrated Antenna Solutions for Wireless Sensor and Millimeter-Wave Systems

   Författare :Shi Cheng; Anders Rydberg; Paul Hallbjörner; Zhining Chen; Uppsala universitet; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; harmonic radar HR ; liquid alloy; millimeter-wave; micromachining; phase shifters; planar inverted cone antennas PICA ; printed circuit boards PCB ; quasi-Yagi antennas; radio frequency microelectromechanical system RF MEMS ; stretchable antennas; substrate integrate waveguides SIW ; T-matched dipole antennas; tapered slot antennas; traveling wave array antennas; ultrawideband UWB ; wireless sensor networks.; Electrical engineering; Elektroteknik; Elektronik; Electronics;

   Sammanfattning : This thesis presents various integrated antenna solutions for different types of systems and applications, e.g. wireless sensors, broadband handsets, advanced base stations, MEMS-based reconfigurable front-ends, automotive anti-collision radars, and large area electronics. LÄS MER

7. 5. Alloy element redistribution during sintering of powder metallurgy steels

   Författare :Abdul Malik Tahir; Gustav Amberg; Jose Manuel Torralba; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Cu redistribution kinetics; diffusion; phase field modeling; powder metallurgy; swelling; liquid phase sintering; Teknisk materialvetenskap; Materials Science and Engineering; Engineering Mechanics; Teknisk mekanik;

   Sammanfattning : Homogenization of alloying elements is desired during sintering of powder metallurgy components. The redistribution processes such as penetration of liquid phase into the interparticle/grain boundaries of solid particles and subsequent solid-state  diffusion of alloy element(s) in the base powder, are important for the effective homogenization of alloy element(s) during liquid phase sintering of the mixed powders. LÄS MER