National Repository of Grey Literature 7 records found  Search took 0.01 seconds. 
Characterization of 1-D Nanostructures by SPM Methods
Škoda, David ; Čech, Vladimír (referee) ; Pavlík, Jaroslav (referee) ; Dub, Petr (advisor)
The thesis is aimed at the characterization of carbon nanotubes and silver nanowires by Scanning Probe Microscopy, namely Scanning Tunneling Microscopy (STM), Atomic Force Microscopy (AFM), Conductive AFM (CAFM) and Scanning Near-Field Optical Microscopy (SNOM). Carbon nanotubes were analyzed by STM, AFM and CAFM microscopy. In a designed apparatus the silver nanowires were fabricated by template assisted deposition and were analyzed with respect to their geometry (AFM), local conductivity (CAFM) and optical properties (SNOM, microreflex spectroscopy). It was found that preferential type of carbon nanowires depends on the fabrication process. The measurements of local conductivity of the nanotubes revealed the similarity with the STM measurements. The AFM measurements of silver nanowires confirmed their growth inside the pores of polycarbonate template. Single nanowires exhibits the semiconducting behavior according to I--V measurement and localized plasmon resonances.
Fabrication of Nanowires into Porous Alumina by Electrolysis
Staňo, Michal ; Čechal, Jan (referee) ; Škoda, David (advisor)
This thesis deals with preparation of metal nanowires based on electrodeposition from aqua solution of metallic salts into porous dielectric aluminium oxide templates. The theoretical part covers various bottom-up methods of nanowire preparation using a template, electrochemistry and electrodeposition overview. The Experimental part is focused on the nanowire (Ag, Cu, Ni-H) preparation by means of direct current and alternating current electrodepositon and geometrical characterization of fabricated nanowires by scanning electron and atomic force microscopy. Defects of commercially available and prepared porous alumina templates are mentioned. Branching and coalescence of nanowires are briefly discussed as well.
Fabrication and Characterization of Templates for Fabrication of Nanowires
Lednický, Tomáš ; Čechal, Jan (referee) ; Škoda, David (advisor)
The bachelor thesis is focused on fabrication of alumina templates by anodization of pure aluminium. The theoretical part discusses the growing process of anodized oxide layers and its dependency on the crucial parameters (solutions, anodization voltage, time). The theoretical part is particularly based on literature retrieval. The experimental part is aimed to the fabrication of alumina membranes: the apparatus design, aluminium foils preparation, aluminium anodization, membrane modifications for next applications (nanowires deposition) and membrane characterization.
Scanning Tunneling Microscopy STM
Michele, Ondřej ; Škoda, David (referee) ; Průša, Stanislav (advisor)
The work deals with STM microscopy. The commercial Nanosurf easyScan2 STM microscope was activated and methodology of STM tip preparation by PtIr wire cutting and W wire etching was established.
Characterization of nanostructures by the near-field optical microscopy (SNOM)
Pagáčová, Lenka ; Kalousek, Radek (referee) ; Škoda, David (advisor)
The bachelor theses is aimed to the characterizaton of nanostructures by scanning near-field optical microscopy (SNOM). There is a presentation of physical principles of SNOM and the description of the experimental set-up of the microscopy. The experimental part discusses the results of determination of transmission coefficient and characterizaton of the lithography structures prepared by focused ion beam etching method.
Fabrication of Nanostructures Using Atomic Force Microscopy
Doupal, Antonín ; Škoda, David (referee) ; Bartošík, Miroslav (advisor)
This bachelor thesis deals with fabrication of nanostructures using atomic force microscopy. The theoretical part gives a brief introduction into atomic force microscopy and local anodic oxidation and it is based on literature retrieval. The experimental part is concentrated on investigation of influence of operational parameters (tip-sample voltage, speed of the tip) on dimensions of LAO nanostructures on Si(111). Further the selective growth of cobalt and gallium on such oxide nanostructures is observed and analysed.
Fabrication of Metallic Nanowires by Electrochemical Deposition
Ostřížek, Petr ; Čechal, Jan (referee) ; Škoda, David (advisor)
In this work we are studied possibitities of preparing of metalic nanowires by using template methods. Second part of this work was design of simple electrolytical cell for electrochemical deposition of nanostructures through polycarbonate membrane. Finally, we are tried to prepare metalic nanowires via pressure injection.

See also: similar author names
9 Škoda, Dominik