Metamaterials are materials constructed to have extraordinary properties (electromagnetic, optical, mechanical, acoustic), which go beyond the properties of natural materials. Metamaterials are made by organizing the same basic units made with common materials, such as metal or plastic, according to mathematical symmetries. The secret lies in the construction of periodic patterns at scales typically smaller than the wavelengths treated. Therefore the properties of metamaterials derive from their structure, regardless of the material they are made of. It is possible to design specific structures to manipulate the waves, divert them, block them, absorb them with an effectiveness unthinkable for conventional materials.
This webinar aims to give a simple and informative presentation of the potential of metamaterials in acoustics, with particular regard to the research in progress as part of the research project of national interest PRIN 2017, coordinated by the University of Bologna and which sees the participation of the University of Ferrara, the University of Campania, the University of Roma Tre and the INRIM of Turin.
Massimo Garai, (moderator) graduated in Physics, PhD, full professor at the University of Bologna. President of the Acoustics and Vibrations Commission of UNI, coordinator of two CEN working groups and expert member of ISO for acoustics. Author of more than 280 scientific papers published internationally or nationally, chairman and invited speaker at numerous international conferences. He carries out research on the following topics: signal processing, properties of materials and metamaterials, propagation of sound in the external environment, architectural acoustics, building acoustics, noise control in the workplace, environmental sustainability assessments. He is or has been responsible for several competitive research projects, including the PRIN 2017 project on sustainable materials and metamaterials for acoustics.
Matteo Cingolani, After a three-year degree in Biomedical Engineering from the Polytechnic University of Marche, he graduated in Electronic Engineering from the Alma Mater Studiorum in Bologna. She collaborated with the Applied Acoustics group during the thesis period: the paper, entitled “Multi-layer MPP as innovative sound absorbing materials: theory, algorithm, measurements” is focused on the study and design of microperforated panels. Currently a new doctoral student in Health Sciences and Technologies at the Department of Industrial Engineering of the University of Bologna, he deals with environmental noise reduction and Active Noise Control, in collaboration with the Department of Medical and Surgical Sciences and the Italian company RCF.
Gino Iannace, since 2001 he is Associate Professor of Environmental Technical Physics at the University of Campania “Luigi Vanvitelli”, ordinary member and founder of the academic spin-off “Sun Energy Europe”. The scientific research activity aims to design and manufacture components for noise control and applied acoustics applications. He has created applications for the acoustic correction of environments with traditional materials, with eco-compatible materials and with materials from the nanomaterials (pvp / gel) supply chain. He dealt with the study of the acoustics of ancient Greek and Roman theaters with measurements of acoustic parameters and related virtual acoustic reconstructions. He dealt with the noise pollution generated by the operation of wind power plants. He is the author of over sixty publications in international Scopus indexed journals.
Cristina Marescotti, graduated in mechanical engineering, she obtained a PhD in Engineering Sciences in 2018 and is currently a research fellow at the Acoustics Group of the University of Ferrara ( UNIFE). She mainly deals with vibro-acoustics in the mechanical field: from the experimental and numerical analysis of the sound emission of machines or components (with possible sound optimization of the product) to the characterization of the acoustic properties of materials (single or multilayer). She also deals with the experimental part concerning the measurement laboratories, applying the protocols defined in the different measurement standards (sound power, sound absorption, sound insulation).
Andrea Prato, he graduated in Physics in 2011 at the University of Turin. In 2012, as a PhD student in Metrology (title later obtained in 2015), he joined the Applied Acoustics group of the National Institute of Metrological Research (INRIM) and worked on issues relating to building and architectural acoustics. He is currently a post-doc research fellow at INRIM, within the Applied Metrology and Engineering Division, in the Mechanical Measurements group. He is the author of several articles in scientific journals and contributions to national and international conferences and he is a collaborator in the courses of “Experimental statistics and mechanical measurements”, “Sound engineering” and “Building physics” of the Turin Polytechnic.
Alessandro Toscano, he is Full Professor of Electromagnetic Fields at the Engineering Department of the Roma Tre University and Vice Rector for Innovation and Technology Transfer. The scientific research activity of Alessandro Toscano has the ultimate goal of conceiving, designing and manufacturing electromagnetic components of an innovative type and with a high technological content that exhibit performances superior to those obtainable with traditional technologies and to respond to the need for protection. environment and human protection. He is the author of more than one hundred and fifty publications on ISI or Scopus indexed international journals; of these five are in the top 0.1 percentile worldwide, nine in the top 1 percentile worldwide and twenty-five in the top 5 percentile worldwide in terms of number of citations and journal quality.
13: 30-13: 40 Introduces and moderates
Massimo Garai – Department of Industrial Engineering (DIN) University of Bologna
13: 40-13: 45 Presentation of the speakers
13: 45-14: 35 Presentation of specific topics by the 5 speakers:
“Non-porous acoustic absorbers: MPP and compact resonators”
M. Cingolani, University of Bologna
“Development of sound-absorbing metaphoric materials”
C. Marescotti, University of Ferrara
“Design, realization and characterization of a metamaterial with high sound absorption in fine band”
A. Prato, INRiM of Turin
“Acoustic metasurfaces studied with the analogy between acoustics and electromagnetism”
A. Toscano, Roma Tre University
“Sound attenuation of a barrier with metamaterials”
G. Iannace, University of Campania
14: 35-14: 55 Questions and answers among the speakers
14.55-15.15 Questions from the audience
- Introduction
-
Metamaterials are materials constructed to have extraordinary properties (electromagnetic, optical, mechanical, acoustic), which go beyond the properties of natural materials. Metamaterials are made by organizing the same basic units made with common materials, such as metal or plastic, according to mathematical symmetries. The secret lies in the construction of periodic patterns at scales typically smaller than the wavelengths treated. Therefore the properties of metamaterials derive from their structure, regardless of the material they are made of. It is possible to design specific structures to manipulate the waves, divert them, block them, absorb them with an effectiveness unthinkable for conventional materials.
This webinar aims to give a simple and informative presentation of the potential of metamaterials in acoustics, with particular regard to the research in progress as part of the research project of national interest PRIN 2017, coordinated by the University of Bologna and which sees the participation of the University of Ferrara, the University of Campania, the University of Roma Tre and the INRIM of Turin.
- Speaker
-
Massimo Garai, (moderator) graduated in Physics, PhD, full professor at the University of Bologna. President of the Acoustics and Vibrations Commission of UNI, coordinator of two CEN working groups and expert member of ISO for acoustics. Author of more than 280 scientific papers published internationally or nationally, chairman and invited speaker at numerous international conferences. He carries out research on the following topics: signal processing, properties of materials and metamaterials, propagation of sound in the external environment, architectural acoustics, building acoustics, noise control in the workplace, environmental sustainability assessments. He is or has been responsible for several competitive research projects, including the PRIN 2017 project on sustainable materials and metamaterials for acoustics.
Matteo Cingolani, After a three-year degree in Biomedical Engineering from the Polytechnic University of Marche, he graduated in Electronic Engineering from the Alma Mater Studiorum in Bologna. She collaborated with the Applied Acoustics group during the thesis period: the paper, entitled “Multi-layer MPP as innovative sound absorbing materials: theory, algorithm, measurements” is focused on the study and design of microperforated panels. Currently a new doctoral student in Health Sciences and Technologies at the Department of Industrial Engineering of the University of Bologna, he deals with environmental noise reduction and Active Noise Control, in collaboration with the Department of Medical and Surgical Sciences and the Italian company RCF.
Gino Iannace, since 2001 he is Associate Professor of Environmental Technical Physics at the University of Campania “Luigi Vanvitelli”, ordinary member and founder of the academic spin-off “Sun Energy Europe”. The scientific research activity aims to design and manufacture components for noise control and applied acoustics applications. He has created applications for the acoustic correction of environments with traditional materials, with eco-compatible materials and with materials from the nanomaterials (pvp / gel) supply chain. He dealt with the study of the acoustics of ancient Greek and Roman theaters with measurements of acoustic parameters and related virtual acoustic reconstructions. He dealt with the noise pollution generated by the operation of wind power plants. He is the author of over sixty publications in international Scopus indexed journals.
Cristina Marescotti, graduated in mechanical engineering, she obtained a PhD in Engineering Sciences in 2018 and is currently a research fellow at the Acoustics Group of the University of Ferrara ( UNIFE). She mainly deals with vibro-acoustics in the mechanical field: from the experimental and numerical analysis of the sound emission of machines or components (with possible sound optimization of the product) to the characterization of the acoustic properties of materials (single or multilayer). She also deals with the experimental part concerning the measurement laboratories, applying the protocols defined in the different measurement standards (sound power, sound absorption, sound insulation).
Andrea Prato, he graduated in Physics in 2011 at the University of Turin. In 2012, as a PhD student in Metrology (title later obtained in 2015), he joined the Applied Acoustics group of the National Institute of Metrological Research (INRIM) and worked on issues relating to building and architectural acoustics. He is currently a post-doc research fellow at INRIM, within the Applied Metrology and Engineering Division, in the Mechanical Measurements group. He is the author of several articles in scientific journals and contributions to national and international conferences and he is a collaborator in the courses of “Experimental statistics and mechanical measurements”, “Sound engineering” and “Building physics” of the Turin Polytechnic.
Alessandro Toscano, he is Full Professor of Electromagnetic Fields at the Engineering Department of the Roma Tre University and Vice Rector for Innovation and Technology Transfer. The scientific research activity of Alessandro Toscano has the ultimate goal of conceiving, designing and manufacturing electromagnetic components of an innovative type and with a high technological content that exhibit performances superior to those obtainable with traditional technologies and to respond to the need for protection. environment and human protection. He is the author of more than one hundred and fifty publications on ISI or Scopus indexed international journals; of these five are in the top 0.1 percentile worldwide, nine in the top 1 percentile worldwide and twenty-five in the top 5 percentile worldwide in terms of number of citations and journal quality.
- Programme
-
13: 30-13: 40 Introduces and moderates
Massimo Garai – Department of Industrial Engineering (DIN) University of Bologna13: 40-13: 45 Presentation of the speakers
13: 45-14: 35 Presentation of specific topics by the 5 speakers:
“Non-porous acoustic absorbers: MPP and compact resonators”
M. Cingolani, University of Bologna“Development of sound-absorbing metaphoric materials”
C. Marescotti, University of Ferrara“Design, realization and characterization of a metamaterial with high sound absorption in fine band”
A. Prato, INRiM of Turin“Acoustic metasurfaces studied with the analogy between acoustics and electromagnetism”
A. Toscano, Roma Tre University“Sound attenuation of a barrier with metamaterials”
G. Iannace, University of Campania14: 35-14: 55 Questions and answers among the speakers
14.55-15.15 Questions from the audience
- Registration