|
|
Design of a micromanipulator for repairs of printed circuit boards
Kopřiva, Pavel ; Skácel, Josef (referee) ; Otáhal, Alexandr (advisor)
This thesis deals with design and construction of micromanipulator based on pantographic mechanism with electronic control. The theoretical part presents possible principles of construction and control of micromanipulators. The practical part contains design of the pantographic mechanism. Furthermore, stepper motor based electrical drive section was designed and appropriate control circuits and power supply were selected. Finally, the micromanipulator was constructed.
|
|
| |
|
|
Fabrication and testing of MEMS device components for micromanipulation
Binková, Petra ; Prášek, Jan (referee) ; Liška, Jiří (advisor)
This diploma thesis deals with the production and testing of MEMS devices intended for micromanipulations with a possibility of their usage in a scanning electron microscope, which includes manipulation of microobjects such as metal microparticles, microfibres or even biological samples. The first chapter contains a detailed study of microsystems and MEMS devices. The next chapter describes various types of micromanipulations, including MEMS. The third chapter deals with possible techniques of microfabrication. The fourth chapter contains experimental part of this work, in which two versions of silicon microgrippers were proposed. Considering available solutions of micromanipulators, principal and spatial limitations in the electron microscope, the piezoelectric actuator was chosen as the gripping principle. Direct write laser lithography and deep reactive ion etching were used to produce the microgrippers, and it was necessary to optimize these techniques for selected application. During the optimizations, various problems were solved, including the elimination of black silicon formation, unsuccessful etching of narrow deep structures, etc. Prototype of one of the proposed microgripper was successfully created. The manufactured micromanipulators were subsequently tested under an optical microscope. During testing, it was necessary to modify the position of the actuator in the device to ensure that the jaws of the manipulator are clamped.
|
|
|
Design of micromanipulator for scanning electron microscope
Palouda, Adam ; Dostál, Zbyněk (referee) ; Nováček, Zdeněk (advisor)
This thesis describes the process of design, manufacture and testing of a device for the detection of cathodoluminescent effect in scanning electron microscope. Firstly, it summarizes the basics of electron microscopy, specifically the design and manufacture of vacuum systems. It also deals with ways of using 3D printing in the prototyping of vacuum components. Then it describes the process of development of a device, which enables the user to measure cathodoluminescence in an electron microscope. The device consists of a feedthrough for optical fibre and a micromanipulator which allows the user to position the tip of the fibre to the sample. The signal from the fibre is processed in a photomultiplier for which a case is designed as a part of this thesis, or in a spectrophotometer. During the development process the device is being tested by performing some measurements and is adjusted to increase functionality and user comfort.
|
|
|
Design of a micromanipulator for repairs of printed circuit boards
Kopřiva, Pavel ; Skácel, Josef (referee) ; Otáhal, Alexandr (advisor)
This thesis deals with design and construction of micromanipulator based on pantographic mechanism with electronic control. The theoretical part presents possible principles of construction and control of micromanipulators. The practical part contains design of the pantographic mechanism. Furthermore, stepper motor based electrical drive section was designed and appropriate control circuits and power supply were selected. Finally, the micromanipulator was constructed.
|
|
| |
guest ::
