Observing the Universe by looking at matter at the scale of 10^-20 M

17 maggio 2023
Orario di inizio 
Polo Ferrari 1 - Via Sommarive 5, Povo (Trento)
Aula A204
Organizzato da: 
Dipartimento di Fisica
Comunità universitaria
Ingresso libero
Prof. Albino Perego
Segreteria del Dipartimento di Fisica
+39 0461 281504


Prof. Gianpietro Cagnoli - Institut Lumière Matière, UMR5306 CNRS, Université Claude Bernard Lyon1


Eight years after the first detection of Gravitational Waves, the scientific community has begun to think about the next generation of GW detectors that will be able to probe the visible Universe and beyond to the Dark Age, when stars were not yet born. To achieve this goal requires a huge effort to improve the performance of all detector subsystems. The seminar will focus on reducing thermal noise that limits the detector in the frequency band where it is most sensitive. Reducing the dissipation processes within the materials used in the mirrors and their suspensions offers the possibility of acquiring unique information about black holes and neutron stars on the other side of the Universe. The status of materials research for the Virgo and LIGO detectors and the prospects for future detectors such as the Einstein Telescope and the Cosmic Explorer will be explained.


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- R.O. Pohl et al. (2002), "Low-temperature thermal conductivity and acoustic attenuation in amorphous solids" Rev. Mod. Phys. 74 991-1013
- K.S. Gilroy and W.A. Phillips (1981), "An asymmetric double-well potential model for structural relaxation processes in amorphous materials" Phil. Mag. B 43 (5) 735-746
- S. Gelin et al. (2019), "Microstructural origin of compressive in situ stresses in electron-gun-evaporated silica thin films" Phys. Rev. Materials 3, 055608

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