In laser droplet generation a laser pulse, composed of primary and detachment part, is used to form and detach a pendant droplet from the end of a metal wire. We analyze the dynamics of laser droplet generation process in dependence on the detachment pulse power. Dynamically three different dripping regimes have been observed: spontaneous, forced and intermittent dripping regime. We characterize these behaviors by means of recurrence plots and their quantification and argue that dynamics is getting more irregular with increasing the detachment pulse power, resembling an intermittent chaos-to-chaos transition.
COBISS.SI-ID: 11808795
This paper presents results of the influence of cryogenic machining on the process stability. The stability diagrams are obtained experimentally using the coarse-grained entropy rate estimator for chatter detection from measured cutting forces. In comparison with conventional machining, enlarged stability windows are observed for the case of cryogenic machining. Based on the defined specific force models in turning operations, it is shown that a higher machining stability is achievable in cryogenic machining due to the reduction of specific cutting force components, in comparison with dry machining.
COBISS.SI-ID: 11827739
Emerging fields such as nanomedicine and nanotoxicology, demand new information on the effects of nanoparticles on biological membranes and lipid vesicles are suitable as an experimental model for bio-nano interaction studies. This paper describes image processing algorithms which stitch video sequences into mosaics and recording the shapes of thousands of lipid vesicles, which were used to assess the effect of CoFe2O4 nanoparticles on the population of 1-palmitoyl-2-oleoyl-sn-glycero-3-phosphatidylcholine lipid vesicles. The applicability of this methodology for assessing the potential of engineered nanoparticles to affect morphological properties of lipid membranes is discussed.
COBISS.SI-ID: 6589049