Instytutowe Seminarium Mechaniki im. W. Olszaka i A. Sawczuka

Pawińskiego 5b

 kolor czcionki + kolor tła  = plan do 7 dni.

11:00, Sala: Aula im. Wacława Olszaka, piętro II
Prof. Stéphane P. A. Bordas
University of Luxembourg

Modelling and simulation of interfaces in mechanics

I will discuss several applications where interfaces are key to the behaviour of mechanical systems, ranging from composite aircraft structures to surgical simulators. I will then present and compare different alternatives to discretise problems involving (moving and free) interfaces and focus on the importance of controlling discretisation error. To conclude, I will open up the discussion on the much more challenging problem associated with choosing the optimal model for a given problem, taking into account (partial and incomplete) data, using a Bayesian inference setting.
2017-09-18 11:00, Sala: Aula im. Wacława Olszaka, piętro II
dr Amrita Jain
Manipal University, Dubai, UAE

Supercapacitor: Types, Materials and Applications

Supercapacitors or ultracapacitors are considered as one of the most upcoming and promising candidates for power devices in future generations. Because of its appealing properties it is suitable for many advanced applications like hybrid electrical vehicles and similar other power devices and systems. In order to use this device in power applications, its energy and power density needs to be maximized. A lot of results from published work in the form of research and review papers, patents and reports are available this time. The purpose of this presentation is to introduce supercapacitors; its types, materials and applications with a focus on the energy storage capability for practical applications. Moreover, presentation will also address the principal technological challenges which the research society is facing along with some experimental results and analysis.
2017-09-11 11:00, Sala: Aula im. Wacława Olszaka, piętro II
Dr. Andrea Camposeo
NEST, Istituto Nanoscienze-CNR, Italy

Optical media based on electrospun nanofibers: enhanced emission, light diffusion and random lasing

Polymer nanofibers are innovative building blocks for a variety of scientific and technological fields, such as tissue engineering, photonics, filtration, energy harvesting and nanoelectronics. As optical media, polymer nanofibers have intriguing and specific properties: they can embed metal nanoparticles, quantum dots and molecular light sources, they can transport light among distant optically-active nanostructures and they can be deposited in 2-dimensional and 3-dimensional architectures in a controlled fashion, forming complex networks of interacting photon sources. Electrospinning technologies are especially interesting in this respect, because of the possibility of tailoring and controlling the properties of individual nanofibers and of their networks. Demonstrated photonic devices and applications include sub-wavelength photonic components and nanofiber distributed feedback lasers, and electrospun nanosystems which couple opto-mechanical properties. Here fundamentals of the electrospinning and nanopatterning methods developed in our group will be presented and discussed as well as recent results on active polymer nanofibers. Investigated properties include light-confinement, waveguiding, multiple scattering, stimulated emission, random lasing and anisotropy of energy migration. The research leading to these results has received funding from the European Research Council under the European Union’s Seventh Framework Programme (FP/2007-2013)/ERC Grant Agreement n. 306357 (ERC Starting Grant “NANO-JETS”,