Colloqui di Dipartimento / Physics Colloquia
from
Sunday 1 January 2023 (15:00)
to
Sunday 31 December 2023 (17:00)
Monday 26 December 2022
Tuesday 27 December 2022
Wednesday 28 December 2022
Thursday 29 December 2022
Friday 30 December 2022
Saturday 31 December 2022
Sunday 1 January 2023
Monday 2 January 2023
Tuesday 3 January 2023
Wednesday 4 January 2023
Thursday 5 January 2023
Friday 6 January 2023
Saturday 7 January 2023
Sunday 8 January 2023
Monday 9 January 2023
Tuesday 10 January 2023
Wednesday 11 January 2023
Thursday 12 January 2023
Friday 13 January 2023
Saturday 14 January 2023
Sunday 15 January 2023
Monday 16 January 2023
Tuesday 17 January 2023
09:00
GRB221009A, the brightest gamma-ray burst ever or: how I started worrying about cosmological explosions
-
Cristiano Guidorzi
(
UniFe
)
GRB221009A, the brightest gamma-ray burst ever or: how I started worrying about cosmological explosions
Cristiano Guidorzi
(
UniFe
)
09:00 - 09:20
Room: 412C
On October 9, 2022, the Earth was flashed for ten minutes by GRB221009A, the brightest and one of the longest gamma-ray bursts yet observed since the birth of gamma-ray astronomy 50 years ago. The gamma-ray (keV to MeV energy band) flux was so intense that it saturated almost all of the detectors aboard a number of space missions. Remarkably, it caused a sudden ionospheric disturbance in the lower layers of the Earth's sunlit ionosphere (60-100 km in altitude): this is exceptional for a source that lies two billion light-years away from us. Had it gone off in the centre of our Galaxy (at ~30 thousand light-years from us), it would have probably caused a mass extinction on Earth. The exceptional nature of this event was the result of two rare properties: (i) intrinsically very luminous and energetic (among the top 1% of all times) and (ii) relatively close to us (among the 4% nearest ones out of ~600 events with measured distance). The estimated rate of comparably bright bursts is about one in a few (1 to 5) centuries. The gamma-rays were produced by a massive star, whose core collapsed to a black hole, which in turn developed a relativistic jet pointed towards us, and whose energy was (partly) dissipated into the gamma-rays that flashed us two billion years later. Many very-high energy photons (>100 MeV) were detected from GRB221009A, with >5000 photons with energy beyond 500 GeV all the way up to the most energetic photon yet observed from a GRB with an energy of 18 TeV half an hour after the GRB. These observations set important constraints on the extreme acceleration processes produced by these relativistic shocks. In addition, the observation of a 18-TeV photon from a source at cosmological distance, thus escaping pair creation along the way, sets important constraints on the diffuse background light and on possible new physics. In this talk I explain how the study of this event can help shed light on the secrets of these mind-boggling cosmological explosions that are still shrouded in mystery and whether gamma-ray bursts might be a source of concern for us.
Wednesday 18 January 2023
Thursday 19 January 2023
Friday 20 January 2023
Saturday 21 January 2023
Sunday 22 January 2023
Monday 23 January 2023
Tuesday 24 January 2023
Wednesday 25 January 2023
Thursday 26 January 2023
Friday 27 January 2023
Saturday 28 January 2023
Sunday 29 January 2023
Monday 30 January 2023
Tuesday 31 January 2023
Wednesday 1 February 2023
Thursday 2 February 2023
Friday 3 February 2023
Saturday 4 February 2023
Sunday 5 February 2023
Monday 6 February 2023
Tuesday 7 February 2023
Wednesday 8 February 2023
Thursday 9 February 2023
Friday 10 February 2023
Saturday 11 February 2023
Sunday 12 February 2023
Monday 13 February 2023
Tuesday 14 February 2023
Wednesday 15 February 2023
Thursday 16 February 2023
Friday 17 February 2023
Saturday 18 February 2023
Sunday 19 February 2023
Monday 20 February 2023
Tuesday 21 February 2023
16:00
Silk/magnetic nanostructures hybrid materials: applications in flexible elctronics and nanomedicine. ...how nature inspires technology
-
Federico Spizzo
(
UniFe
)
Silk/magnetic nanostructures hybrid materials: applications in flexible elctronics and nanomedicine. ...how nature inspires technology
Federico Spizzo
(
UniFe
)
16:00 - 17:00
Room: 412C
Hybrid materials, combining inorganic and organic components, are the subject of an intense research activity, in particular for their technological potential. They display novel properties (e.g. mechanical, magnetic, or bioactive), which stem from the synergy between their constituent phases. In this intriguing research field, an original group of hybrid materials is represented by those made of magnetic nanostructures interfaced/mixed with bio-inspired matrices. In this contribution, two different hybrid systems are presented and discussed. They are based on silk, a natural biopolymer made of protein (i.e. fibroin) fibers highly biocompatible, elastic and tougher than steel. The first material was prepared for the field of flexible electronics, it was obtained from spider silk threads, and our analysis show that it represents a prototype with potential applications in the field of soft robotics. The second hybrid system was based on silkworm silk and was intended for the field of regenerative medicine. Our results prove that it can be used for biomedical applications, for instance as bio-active coating of orthopedic implants.
Wednesday 22 February 2023
Thursday 23 February 2023
Friday 24 February 2023
Saturday 25 February 2023
Sunday 26 February 2023
Monday 27 February 2023
Tuesday 28 February 2023
Wednesday 1 March 2023
Thursday 2 March 2023
Friday 3 March 2023
Saturday 4 March 2023
Sunday 5 March 2023
Monday 6 March 2023
Tuesday 7 March 2023
Wednesday 8 March 2023
Thursday 9 March 2023
Friday 10 March 2023
Saturday 11 March 2023
Sunday 12 March 2023
Monday 13 March 2023
Tuesday 14 March 2023
Wednesday 15 March 2023
Thursday 16 March 2023
Friday 17 March 2023
Saturday 18 March 2023
Sunday 19 March 2023
Monday 20 March 2023
Tuesday 21 March 2023
16:00
Stranger things ….. a new ``season’’ of stars?
-
Alessandro Drago
(
UniFe & INFN Ferrara
)
Stranger things ….. a new ``season’’ of stars?
Alessandro Drago
(
UniFe & INFN Ferrara
)
16:00 - 17:00
Room: 412C
In 1984 Edward Witten, in a famous paper, formulated the hypothesis that the absolute ground state of matter is not 56Fe, but a cluster of up, down and strange quarks, an idea which became known as the “strange quark matter hypothesis”. In that seminal paper he also speculated that strange quark matter can constitute dark matter and that it can exist in chunks of all sizes, from small ones containing maybe just a few hundred quarks up to objects having the mass of the Sun and called strange quark stars. After almost 40 years we are still investigating Witten’s hypothesis, which, if true, would have consequences in nuclear physics, in astrophysics, in cosmology and, potentially, could even open a new path to producing energy. I will clarify what Witten’s hypothesis is and how it relates to a variety of observables, ranging from properties of compact stars, to features of explosive astrophysical processes, to properties of dark matter and I will discuss how strange quark matter can be searched for. In the last years a few observations have suggested that some specific objects can be identified as strange quark stars. In particular, one of the two objects in the merger GW190814 has a mass too large to be an ordinary neutron star [1,2], while the masses of SAX1808.4-3658 [3] and of HESS J1731-347 [4] are too small. We have shown instead that all of those objects can easily be interpreted as strange quark stars [5,6,7]. [1] Abbott et al. ApJ 896:L44 (2020) [2] F. J. Fattoyev et al., Phys. Rev. C 102, 065805 [3] T. Di Salvo et al., MNRAS 483, 767–779 (2019) [4] G.Pühlhofer & A. Santangelo, Nature Astronomy doi.org/10.1038/s41550-022-01800-1 [5] I. Bombaci, A. Drago, D. Logoteta, G. Pagliara and I. Vidaña, PRL 126, 162702 (2021) [6] F. Di Clemente, A. Drago, P. Char, G. Pagliara, 2207.08704 [7] F. Di Clemente, A. Drago, G. Pagliara, 2211.07485
Wednesday 22 March 2023
Thursday 23 March 2023
Friday 24 March 2023
Saturday 25 March 2023
Sunday 26 March 2023
Monday 27 March 2023
Tuesday 28 March 2023
Wednesday 29 March 2023
Thursday 30 March 2023
Friday 31 March 2023
Saturday 1 April 2023
Sunday 2 April 2023
Monday 3 April 2023
Tuesday 4 April 2023
Wednesday 5 April 2023
Thursday 6 April 2023
Friday 7 April 2023
Saturday 8 April 2023
Sunday 9 April 2023
Monday 10 April 2023
Tuesday 11 April 2023
Wednesday 12 April 2023
Thursday 13 April 2023
Friday 14 April 2023
Saturday 15 April 2023
Sunday 16 April 2023
Monday 17 April 2023
Tuesday 18 April 2023
16:00
Seeing Through Matter: innovation in biomedical imaging through X-rays energy and phase
-
Paolo Cardarelli
(
INFN Sezione di Ferrara
)
Seeing Through Matter: innovation in biomedical imaging through X-rays energy and phase
Paolo Cardarelli
(
INFN Sezione di Ferrara
)
16:00 - 17:00
Room: 412C
On November 8th, 1895, W. C. Roentgen serendipitously discovered X-rays, which have since become a fundamental tool for investigating the inner structure of matter in a non-destructive way. While significant progress has been made in the engineering of radiographic systems, the basic operating principles have remained unchanged to this day. In recent years, technological advancements in photon detection and radiation production have paved the way for innovative techniques beyond conventional radiography, such as spectral and phase-sensitive X-ray imaging. These techniques provide a more detailed and accurate evaluation of the composition and structure of the materials, aiming to achieve a better diagnostic power or reduce the radiation dose. This seminar will explore the evolution and applications of X-ray technology, reviewing recent research by our medical physics group, to address present challenges and future perspectives in biomedical X-ray imaging.
Wednesday 19 April 2023
Thursday 20 April 2023
Friday 21 April 2023
Saturday 22 April 2023
Sunday 23 April 2023
Monday 24 April 2023
Tuesday 25 April 2023
Wednesday 26 April 2023
Thursday 27 April 2023
Friday 28 April 2023
Saturday 29 April 2023
Sunday 30 April 2023
Monday 1 May 2023
Tuesday 2 May 2023
Wednesday 3 May 2023
Thursday 4 May 2023
Friday 5 May 2023
Saturday 6 May 2023
Sunday 7 May 2023
Monday 8 May 2023
Tuesday 9 May 2023
Wednesday 10 May 2023
Thursday 11 May 2023
Friday 12 May 2023
Saturday 13 May 2023
Sunday 14 May 2023
Monday 15 May 2023
Tuesday 16 May 2023
16:00
Lithium ion batteries: the latest results on the germanium anodes developed by UNIFE
-
Donato Vincenzi
(
UniFe
)
Lithium ion batteries: the latest results on the germanium anodes developed by UNIFE
Donato Vincenzi
(
UniFe
)
16:00 - 17:00
Room: 412C
Energy storage systems have undergone a true revolution since the beginning of the 90s thanks to lithium ion batteries, enabling the technology breakthrough that led to smartphones, laptops and, most recently to the electric mobility. However, the current challenges cannot be met by the traditional storage technology, and new materials are required that could be capable of storing more charge and energy per unit of mass of the battery system. In this context, the photovoltaic laboratory of the University of Ferrara is developing a new anodic material, based on germanium, to push forward the limits of this storage system. The electrodes are fabricated thanks to a two-step process: firstly, a thin germanium layer is realized by means of a chemical vapor deposition assisted by a plasma. This thin layer can’t be directly used as anodic material, due a huge volumetric variation during lithium exchange in the battery. For this reason, a nano-structuration step is performed to remove part of the germanium film by means of electrochemical etching with hydrofluoric acid. The resulting electrodes revealed a capacity over three times higher than standard graphite and an impressive stability over cycling, throughout hundreds of cycles. This presentation will give an overview of the fabrication process, and of the most recent and interesting results.
Wednesday 17 May 2023
Thursday 18 May 2023
Friday 19 May 2023
Saturday 20 May 2023
Sunday 21 May 2023
Monday 22 May 2023
Tuesday 23 May 2023
Wednesday 24 May 2023
Thursday 25 May 2023
Friday 26 May 2023
Saturday 27 May 2023
Sunday 28 May 2023
Monday 29 May 2023
Tuesday 30 May 2023
Wednesday 31 May 2023
Thursday 1 June 2023
Friday 2 June 2023
Saturday 3 June 2023
Sunday 4 June 2023
Monday 5 June 2023
Tuesday 6 June 2023
Wednesday 7 June 2023
Thursday 8 June 2023
Friday 9 June 2023
Saturday 10 June 2023
Sunday 11 June 2023
Monday 12 June 2023
Tuesday 13 June 2023
Wednesday 14 June 2023
Thursday 15 June 2023
Friday 16 June 2023
Saturday 17 June 2023
Sunday 18 June 2023
Monday 19 June 2023
Tuesday 20 June 2023
16:00
Quantum Computing, or: How I learned to Stop Worrying and Love the Qubit
-
Concezio Bozzi
(
Istituto Nazionale di Fisica Nucleare
)
Quantum Computing, or: How I learned to Stop Worrying and Love the Qubit
Concezio Bozzi
(
Istituto Nazionale di Fisica Nucleare
)
16:00 - 17:00
Room: 412C
The technology to build computing devices using quantum-mechanical effects has seen a tremendous acceleration in the past few years. The advantage of quantum computers over classical devices lies in the possibility of using quantum superposition and entanglement of qubits to perform exponentially growing computations in parallel. This effect makes it possible to reduce the computational complexity of certain classes of problems, such as optimisation, sampling, combinatorial or factorisation problems. Research in High-Energy Physics is becoming more and more constrained by computing resources. Increasing dataset sizes and complexity call for a change of paradigm that could be met by quantum computation. Quantum algorithms have been proposed that require large scale fault-tolerant quantum computers. In contrast, today, we have access to the Noisy Intermediate-Scale Quantum (NISQ) hardware dominated by short coherence time (noise), a small number of qubits (from a few tens up to few thousands, in the case of quantum annealers) and limited connectivity. These limitations led to numerous investigations towards the design and optimisation of NISQ algorithms to demonstrate their viability and a possible quantum advantage over the current hardware. Some examples of potentially promising HEP applications are given.
Wednesday 21 June 2023
Thursday 22 June 2023
Friday 23 June 2023
Saturday 24 June 2023
Sunday 25 June 2023
Monday 26 June 2023
Tuesday 27 June 2023
Wednesday 28 June 2023
Thursday 29 June 2023
Friday 30 June 2023
Saturday 1 July 2023
Sunday 2 July 2023
Monday 3 July 2023
Tuesday 4 July 2023
Wednesday 5 July 2023
Thursday 6 July 2023
Friday 7 July 2023
Saturday 8 July 2023
Sunday 9 July 2023
Monday 10 July 2023
Tuesday 11 July 2023
Wednesday 12 July 2023
Thursday 13 July 2023
Friday 14 July 2023
Saturday 15 July 2023
Sunday 16 July 2023
Monday 17 July 2023
Tuesday 18 July 2023
Wednesday 19 July 2023
Thursday 20 July 2023
Friday 21 July 2023
Saturday 22 July 2023
Sunday 23 July 2023
Monday 24 July 2023
Tuesday 25 July 2023
Wednesday 26 July 2023
Thursday 27 July 2023
Friday 28 July 2023
Saturday 29 July 2023
Sunday 30 July 2023
Monday 31 July 2023
Tuesday 1 August 2023
Wednesday 2 August 2023
Thursday 3 August 2023
Friday 4 August 2023
Saturday 5 August 2023
Sunday 6 August 2023
Monday 7 August 2023
Tuesday 8 August 2023
Wednesday 9 August 2023
Thursday 10 August 2023
Friday 11 August 2023
Saturday 12 August 2023
Sunday 13 August 2023
Monday 14 August 2023
Tuesday 15 August 2023
Wednesday 16 August 2023
Thursday 17 August 2023
Friday 18 August 2023
Saturday 19 August 2023
Sunday 20 August 2023
Monday 21 August 2023
Tuesday 22 August 2023
Wednesday 23 August 2023
Thursday 24 August 2023
Friday 25 August 2023
Saturday 26 August 2023
Sunday 27 August 2023
Monday 28 August 2023
Tuesday 29 August 2023
Wednesday 30 August 2023
Thursday 31 August 2023
Friday 1 September 2023
Saturday 2 September 2023
Sunday 3 September 2023
Monday 4 September 2023
Tuesday 5 September 2023
Wednesday 6 September 2023
Thursday 7 September 2023
Friday 8 September 2023
Saturday 9 September 2023
Sunday 10 September 2023
Monday 11 September 2023
Tuesday 12 September 2023
Wednesday 13 September 2023
Thursday 14 September 2023
Friday 15 September 2023
Saturday 16 September 2023
Sunday 17 September 2023
Monday 18 September 2023
Tuesday 19 September 2023
Wednesday 20 September 2023
Thursday 21 September 2023
Friday 22 September 2023
Saturday 23 September 2023
Sunday 24 September 2023
Monday 25 September 2023
Tuesday 26 September 2023
Wednesday 27 September 2023
Thursday 28 September 2023
Friday 29 September 2023
Saturday 30 September 2023
Sunday 1 October 2023
Monday 2 October 2023
Tuesday 3 October 2023
Wednesday 4 October 2023
Thursday 5 October 2023
Friday 6 October 2023
Saturday 7 October 2023
Sunday 8 October 2023
Monday 9 October 2023
Tuesday 10 October 2023
Wednesday 11 October 2023
Thursday 12 October 2023
Friday 13 October 2023
Saturday 14 October 2023
Sunday 15 October 2023
Monday 16 October 2023
Tuesday 17 October 2023
16:00
HPC for Computational Physics
-
Sebastiano Fabio Schifano
(
Department of Environmental and Prevention Sciences Ferrara University and INFN
)
HPC for Computational Physics
Sebastiano Fabio Schifano
(
Department of Environmental and Prevention Sciences Ferrara University and INFN
)
16:00 - 17:00
Room: 412C
High Performance Computing (HPC) systems, as the name explains, are what computer technology is capable of building more powerful than conventional computers. For over 50 years, their extreme capabilities have led to considerable progress in academic and industry research, enabling numerical simulations to model several physical phenomena at any scale, and making it possible to understand their behavior and predict the evolution. Digital simulations, together with the newest paradigms of artificial intelligence, are going to be more and more at the base of any technological innovation, but also of social progress, making improvements in crucial fields such as health, food, energy transition and monitoring of climate changes. These "Formula 1" computers allow researchers trained to use their exceptional computational capabilities to achieve otherwise unachievable results. In this talk we discuss the architecture of most recent HPC systems, and the issues to unleash their computational power, and some results.
Wednesday 18 October 2023
Thursday 19 October 2023
Friday 20 October 2023
Saturday 21 October 2023
Sunday 22 October 2023
Monday 23 October 2023
Tuesday 24 October 2023
Wednesday 25 October 2023
Thursday 26 October 2023
Friday 27 October 2023
Saturday 28 October 2023
Sunday 29 October 2023
Monday 30 October 2023
Tuesday 31 October 2023
Wednesday 1 November 2023
Thursday 2 November 2023
Friday 3 November 2023
Saturday 4 November 2023
Sunday 5 November 2023
Monday 6 November 2023
Tuesday 7 November 2023
Wednesday 8 November 2023
Thursday 9 November 2023
Friday 10 November 2023
Saturday 11 November 2023
Sunday 12 November 2023
Monday 13 November 2023
Tuesday 14 November 2023
Wednesday 15 November 2023
Thursday 16 November 2023
Friday 17 November 2023
Saturday 18 November 2023
Sunday 19 November 2023
Monday 20 November 2023
Tuesday 21 November 2023
16:00
The Strong Crystalline Field: or how to play with particle beams using tiny crystals!
-
LAURA BANDIERA
(
Istituto Nazionale di Fisica Nucleare
)
The Strong Crystalline Field: or how to play with particle beams using tiny crystals!
LAURA BANDIERA
(
Istituto Nazionale di Fisica Nucleare
)
16:00 - 17:00
Room: 412C
Exploring the interaction between particles and crystalline structures offers intriguing insights at the intersection of particle and solid state physics, with significant applications. Crystals present a distinctively simple environment for the investigation of strong electromagnetic fields. When energetic particles interact with crystals near their major crystallographic directions, the crystal lattice's coherence can induce extremely strong electric fields in the particle's rest frame, potentially surpassing the so-called Schwinger field or quantum critical field. This Strong Crystalline Field yields a host of applications for particle accelerators, ranging from generating intense radiation sources and steering particle beams. These applications extend across a broad spectrum of fields, including particle physics at major facilities like the CERN and Fermilab, as well as material science and nuclear medicine. Moreover, Strong Crystalline Fields are integral to the advancement of innovative ultra-compact detectors, specifically tailored for the precise detection of high-energy gamma rays. These new detectors find application in accelerator and satellite experiments, mainly for research into physics Beyond the Standard Model and the indirect detection of Dark Matter.
Wednesday 22 November 2023
Thursday 23 November 2023
Friday 24 November 2023
Saturday 25 November 2023
Sunday 26 November 2023
Monday 27 November 2023
Tuesday 28 November 2023
Wednesday 29 November 2023
Thursday 30 November 2023
Friday 1 December 2023
Saturday 2 December 2023
Sunday 3 December 2023
Monday 4 December 2023
Tuesday 5 December 2023
Wednesday 6 December 2023
Thursday 7 December 2023
Friday 8 December 2023
Saturday 9 December 2023
Sunday 10 December 2023
Monday 11 December 2023
Tuesday 12 December 2023
16:00
The left hand of lightness: how we get to understand neutrinos (and other particles) by hunting for the most ancient light in the Universe
-
Martina Gerbino
(
Istituto Nazionale di Fisica Nucleare
)
The left hand of lightness: how we get to understand neutrinos (and other particles) by hunting for the most ancient light in the Universe
Martina Gerbino
(
Istituto Nazionale di Fisica Nucleare
)
16:00 - 17:00
Room: 412C
Neutrinos are copiously produced in the early stages of the Universe history. They are the second most abundant species after cosmic photons to been wandering through the cosmic web for billions of years. They are also the most puzzling particles within the standard model of particle physics. Many of their properties - and the physical origin of these properties - are still mysterious. We have never measured their total mass (but we know for sure they have mass), we cannot explain where it comes from, we do not know whether neutrinos are their own antiparticles. However, we do know that neutrinos played - and still play - an important role in shaping the Universe as we observe it today. In this colloquium, we will discover how the observation of the cosmic microwave background (CMB) - the relic radiation from the Big Bang - can unveil the mysteries of neutrinos. On top of this, throughout its long history, the Universe may have seen the birth of new relic particles still to be discovered, or even the manifestation of exotic properties of known particles still to be detected. We will learn how cosmology promises to open the window to the beyond-the-standard-model landscape that physicists have been longing for.
Wednesday 13 December 2023
Thursday 14 December 2023
Friday 15 December 2023
Saturday 16 December 2023
Sunday 17 December 2023
Monday 18 December 2023
Tuesday 19 December 2023
Wednesday 20 December 2023
Thursday 21 December 2023
Friday 22 December 2023
Saturday 23 December 2023
Sunday 24 December 2023
Monday 25 December 2023
Tuesday 26 December 2023
Wednesday 27 December 2023
Thursday 28 December 2023
Friday 29 December 2023
Saturday 30 December 2023
Sunday 31 December 2023