SIDIS

Simulation of Dielectric Spectra

 Coordinatore UNIVERSITAT WIEN 

 Organization address address: UNIVERSITATSRING 1
city: WIEN
postcode: 1010

contact info
Titolo: Dr.
Nome: Christian
Cognome: Schroeder
Email: send email
Telefono: 431428000000
Fax: 431428000000

 Nazionalità Coordinatore Austria [AT]
 Totale costo 248˙379 €
 EC contributo 248˙379 €
 Programma FP7-PEOPLE
Specific programme "People" implementing the Seventh Framework Programme of the European Community for research, technological development and demonstration activities (2007 to 2013)
 Code Call FP7-PEOPLE-2012-IEF
 Funding Scheme MC-IEF
 Anno di inizio 2013
 Periodo (anno-mese-giorno) 2013-04-01   -   2015-03-31

 Partecipanti

# participant  country  role  EC contrib. [€] 
1    UNIVERSITAT WIEN

 Organization address address: UNIVERSITATSRING 1
city: WIEN
postcode: 1010

contact info
Titolo: Dr.
Nome: Christian
Cognome: Schroeder
Email: send email
Telefono: 431428000000
Fax: 431428000000

AT (WIEN) coordinator 248˙379.60

Mappa


 Word cloud

Esplora la "nuvola delle parole (Word Cloud) per avere un'idea di massima del progetto.

relaxation    spectra    liquids    enhanced    computational    spectral    dynamics    spectroscopy    sampling    simulations    techniques    molecular    modern    dielectric   

 Obiettivo del progetto (Objective)

'Modern spectroscopic techniques allow to measure the frequency dependent dielectric permittivity of complex liquids over about 18 decades, accessing relaxation times ranging from several hours down to the picosecond scale. The central problem in interpreting dielectric spectra is to relate the spectral features to the underlying dynamics of the molecular or atomic components of the fluids. Molecular dynamics simulations could provide in this sense invaluable help. However, a large number of important relaxation processes, responsible for spectral peaks, originate from rare events, the presence of which can severely limit the potential of this simulation technique. Up until now, only standard molecular dynamics simulations have been employed to investigate dielectric spectra, and the capabilities of enhanced sampling techniques such as metadynamics or parallel tempering have been largely neglected in this field. In addition, liquids other than water have received relatively little attention in the framework of computational dielectric spectroscopy, even though plenty of important problems are still waiting for an answer. I will fill this gap by putting forward an approach which combines the knowledge of the free energy landscape provided by enhanced sampling techniques with the information accessible by molecular dynamics simulations. I will use this novel approach to tackle two compelling problems (the origin of the excess wing in liquid glycerol spectra and the ion pairing properties in room temperature ionic liquids) in the fundamental understanding of two materials which are crucial for the modern economy. The SIDIS approach is expected to have an important impact on the field of computational dielectric spectroscopy, as it will lay the foundations of a new data analysis paradigm that allows to perform assignments of spectral features never done before, therefore providing a major contribution to the advancement of this field.'

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