Essays about: "MM theory"

Showing result 16 - 20 of 42 essays containing the words MM theory.

  1. 16. Modelling Graphene Field-Effect Transistors

    University essay from Lunds universitet/Institutionen för elektro- och informationsteknik

    Author : Sofia Sjölander; [2017]
    Keywords : Graphene; FET; GFET; Field Effect-transistor; QMUL; Technology and Engineering;

    Abstract : Today, transistors with 20 nanometer (nm) channel length are in mass production and many researchers believe that we are reaching a limit with downsizing conventionally used silicon metal-oxide-semiconductor field-effect transistors (MOSFETs) [1]. To keep up with the trend of making the transistor smaller, new channel materials are studied, and graphene has come into the spotlight. READ MORE

  3. 17. Investigation of Wide Band mm-Wave Radome

    University essay from KTH/Elektroteknisk teori och konstruktion

    Author : Shreyasi Bhowmik; [2017]
    Keywords : ;

    Abstract : “Radome” is a necessary shield for any type of antenna. Itsshape, thickness, mechanical and electrical properties defineits application. This thesis mainly revolves around thetechniques, used for radome analysis in W-band with thehelp of electromagnetic solvers of High Frequency StructureSimulator (HFSS) and CST Microwave Studio. READ MORE

  4. 18. Investigation of phase conjugation for medical imaging

    University essay from Lunds universitet/Fysiska institutionen; Lunds universitet/Atomfysik

    Author : Ivan Sytcevich; [2017]
    Keywords : Phase conjugation; Ultrasound Optical Tomography; Rare-Earth-Doped Crystals.; Physics and Astronomy;

    Abstract : With the development of extremely precise spectral filters based on spectral hole burning and slow light effects, the idea of their implementation in an Ultrasound Optical Tomography (UOT) medical imaging technique arose. Simulations have shown that the resulting Contrast-to-Noise (CNR) ratio is fairly good at depths up to 5 cm but decreases dramatically when probing deeper in tissue. READ MORE

  5. 19. Model-Based Design of a Fork Control System in Very Narrow Aisle Forklifts

    University essay from Linköpings universitet/Reglerteknik

    Author : Erik Bodin; Henric Davidsson; [2017]
    Keywords : truck; forklift; turret; head; turret-head; hydraulics; proportional valve; model-based design; model-based; control; toyota;

    Abstract : This thesis explains the model-based design of a fork control system in a turret head operated Very Narrow Aisle forklift in order to evaluate and push the limits of the current hardware architecture. The turret head movement consists of two separate motions, traversing and rotation, which both are hydraulically actuated. READ MORE

  6. 20. Screaming screw tightenings

    University essay from KTH/Maskinkonstruktion (Inst.)

    Author : Jacob Andersson; Fredrik Danielsson; Wilhelm Löwen; [2017]
    Keywords : scream; screw joints; stick-slip; skrik; skruvförband; stick-slip;

    Abstract : This paper is a bachelor thesis in machine design where screaming screw tightenings are discussed. The research was initiated with a preliminary study in screw mechanics and the tightening process, as well as the stick-slip phenomenon. READ MORE