Heinz Sturm

TL;DR: In this article, the growth of a grating perpendicular to the polarization vector consisting of nearly wavelength-sized periodic lines was observed with an increasing number of pulses per spot, up to 100, and the formation of equally oriented ripples with a spatial period close to half the laser wavelength.

TL;DR: A critical evaluation of two vibrational spectroscopies, Raman and Fourier transform infrared (FTIR) spectroscopy and two extraction methods showed that in designing and selecting the right methodology, the scientific question that determines what needs to be understood is significant, and should be considered carefully prior to analysis.

TL;DR: In this article, the pyrolysis and fire behavior of glass-fiber reinforced poly(butylene terephthalate) (PBT/GF) with two different metal phosphinates as flame retardants in combination with and without melamine cyanurate (MC) were analyzed by means of thermogravimetry, thermograimetry coupled with infrared spectroscopy, flammability, and cone calorimeter tests as well as scanning electron microscopy/energy dispersive X-ray spectrographs.

TL;DR: In this article, the influence of the laser pulse number and peak fluence on surface damage was investigated by means of several surface analytical techniques (optical microscopy, dynamic friction atomic force microscopy and scanning Auger electron microscopy for chemical analysis).

TL;DR: In this paper, a model of sample deformations that extends the basic equations of the elastic continuum contact theories to the plastic deformations is presented, which gives several insights into the processes of deformation of soft samples and permits to calculate not only the parameters of the Williams−Landel−Ferry equation but also the Young's modulus and the yielding force of the polymer as a function of temperature and/or probe rate.