Université de Fribourg

Modeling analysis of ultrasonic attenuation and angular scattering measurements of suspended particles

Fleckenstein, Peter ; Storti, Giuseppe ; Deschwanden, Fabian ; Gruber, Peter ; Lattuada, Marco

In: The Journal of the Acoustical Society of America, 2018, vol. 143, no. 2, p. 1049–1063

A combination of two models previously developed by Faran, and Atkinson and Kytömaa (Faran-AK model) was used to calculate the ultrasonic attenuation and the backscattering signal of a suspension of particles. The model of Atkinson and Kytömaa yielded the viscoelastic contributions while the model of Faran yielded the scattering contribution. A comparison with the more fundamental model by...

Université de Fribourg

Modeling of the degradation of poly(ethylene glycol)-co-(lactic acid)-dimethacrylate hydrogels

Diederich, Vincent E. G. ; Villiger, Thomas ; Storti, Giuseppe ; Lattuada, Marco

In: Macromolecules, 2017, vol. 50, no. 14, p. 5527–5538

Because of their similarity with extracellular matrix, hydrogels are ideal substrates for cell growth. Hydrogels made of synthetic polymers are excellent alternatives to natural ones and offer the key advantage of precisely controllable degradation times. In this work, hydrogels have been prepared from modified poly(ethylene glycol) macromonomers, functionalized on both ends first with a few...