Obor: Materials

Měření rychlosti šíření trhliny v trubkovém PE

Důkladně zmapovaný mechanismus šíření trhliny je základem pro přesné predikce životnosti různých součástí. Zatímco postupy měření rychlosti šíření trhlin jsou pro kovové materiály poměrně dobře rozvinuté a mechanismy jsou také dobře popsané, v případě polymerních materiálů tomu tak není. Tato práce je zaměřena na měření rychlosti šíření trhliny v různých typech vzorků z vysokohustotního polyetylenu (HDPE), který se…

Unlocking the Potential of 2D Materials

Are you fascinated by the potential of emerging 2D materials and their diverse applications across various fields? Join us in exploring the extraordinary features of these materials and unlocking their full potential! At our lab, we focus on the tuning of the properties of 2D materials to optimize their performance for specific applications. One of…

Aplikace molekulární dynamiky v materiálovém výzkumu

Molekulární dynamika (MD) je počítačová simulační metoda, která popisuje pohyb atomů a molekul. Nejčastěji se trajektorie atomů a molekul určují numerickým řešením Newtonových pohybových rovnic pro systém interagujících částic, kdy síly mezi částicemi a jejich potenciální energie se často počítají pomocí meziatomových potenciálů nebo molekulárně mechanických silových polí. Metoda se používá především v chemii, fyzice, nauce…

Ph.D. thesis: Microscopic processes at the fatigue crack tip

Fatigue crack growth is a process that is described macroscopically by quantities such as the stress intensity factor, J-integral or plastic part of the J-integral. There are many models of crack propagation at the microscopic level that consider plastic deformation around the crack tip, but which differ in details. Advances in experimental methods allow more…

Photoswitches – graphene functionalization using chiral organic molecules

In the current project, we are particularly interested in the covalent attachment of small organic molecules to 2D materials[i] and the linking of the latter via the former. While in most of our projects, the organic molecules used for surface modification are commercially available or readily available from such, some projects require more extensive synthetic efforts.…

Photovoltaic devices and light emitting diodes

This topic connected with fabrication of solar cells, photodiodes, emitting diodes. The student will get acquainted with vacuum technology, thin film deposition methods in vacuum as well as by spin coating method. The student will start to work with vacuum setups for thin film deposition. As a result of the work, a device (photodiode or…

Supercapacitors based on 2D material Ti3C2 MXene

This topic connected with energy storage. In this project, student will use the 2D Ti3C2 MXene flakes for fabrication of supercapacitor. MXene is a new 2D material and has unusual electronic, mechanical and optical properties. The student will know the principle of the supercapacitor as well as how to fabricate it. The main parameters of…

Self-cleaning surfaces by laser micro and nanostructuring

The optimal combination of surface topography and chemistry will result in superhydrophobic properties on hard-to-process materials. These properties will be further tested for self-cleaning behavior by the fast camera and image analysis. The candidate will learn the basics of laser technology, learn general information about other technologies. The student will work on literature research and…

Laser nanostructuring for medical applications

State-of-the-art multi-beam and beam-shaping techniques will be utilized for the development of functional surface micro and nanostructures. These structures will be evaluated with respect to anti-bacterial or anti-microbial properties and cell growth. The candidate will learn the basics of laser technology, learn general information about other technologies. The student will work on literature research and…

Advanced glass processing and functionalization

Advanced microscopic and diffraction or interference optical systems will be used for micro-drilling and cutting of glass and similar materials. In addition, functional micro and nanostructures will be developed for anti-reflection, superhydrophobic or oleophobic properties. Optical, SEM, and AFM analysis will be performed for the determination of optimal processing window and analysis of surface topography.…