Sökning: "PZT"

Visar resultat 1 - 5 av 6 avhandlingar innehållade ordet PZT.

  1. 1. Actuators for autonomous microrobots

    Författare :Niklas Snis; Stefan Johansson; Urban Simu; Alvo Aabloo; Uppsala universitet; []
    Nyckelord :Engineering physics; Locomotion; Microrobot; PZT; P VDF-TrFE ; Autonomous; Multilayer; Actuator; Teknisk fysik;

    Sammanfattning : This thesis presents actuators used in autonomous microsystems. Characteristic for all actuators presented is the low drive voltage and the low power consumption. Different motion mechanisms have been studied and applied in various locomotion modules for microrobots. LÄS MER

  3. 2. Physics of piezoelectric shear mode inkjet actuators

    Författare :Jürgen Brünahl; KTH; []
    Nyckelord :;

    Sammanfattning : This thesis describes work on piezoelectric shear modeactuators used in dropon- demand ink printing applications.These actuators comprise an array of ink channels micromachinedinto bulk Pb(ZrxTi1-x)O3(PZT) ceramics. LÄS MER

  4. 3. Design and process issues of junction- and ferroelectric-field effect transistors in silicon carbide

    Författare :Sang-Mo Koo; KTH; []
    Nyckelord :;

    Sammanfattning : In today’s solid-state electronics, Si and SiO2 are thedominant materials used. However, new materials such as SiC orferroelectrics are required for some special applications sincesuperior characteristics can be achieved in electronic devices. LÄS MER

  5. 4. Ferroelectric Thin Films on Si-substrate for Tunable Microwave Applications

    Författare :Saeed Abadei; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Phase shifter; BaxSr1-xTiO3; Tunable microwave device; Ferroelectric Varactor; Paraelectric; Filter; Na0.5K0.5NbO3; Integrated ferroelectric device; SrTiO3; Ferroelectric;

    Sammanfattning : The thesis presents the development of microwave tunable devices based onferroelectric thin films. The main tasks in this work are the fabrication, optimization, andintegration of ferroelectric thin film into Si-MMIC. LÄS MER

  7. 5. Nanoscale studies of functional materials using scanning probe microscopy

    Författare :Jesper Wittborn; KTH; []
    Nyckelord :;

    Sammanfattning : This thesis deals with developing suitable modifications ofScanning Probe Microscopy (SPM) for investigations offunctional properties of materials. In order to make itpossible to investigate a number of properties of variousfunctional systemsusing SPM the following new techniques have beendeveloped:    A magnetic force microscope (MFM) having capability ofboth dc- and ac-mode detection. LÄS MER