Month: October 2018

Congratulations Dr. Jordi Martínez: new SUMAN graduate!

Dr. Jordi Martínez from the Superconducting Materials and Large Scale Nanostructures (SUMAN) group at ICMAB, and the Chemistry Department at the UAB, successfully defended his PhD thesis on Wednesday, 31 October 2018. Congratulations!
In the photo, Jordi appears with his three supervisors, Dr. Susagna Ricart and Dr. Jordi Faraudo from the ICMAB, and Dr. Ramon Yañez from the UAB, and with the three members of the PhD Committee, Dr. Daniel Maspoch, from the ICN2, Dr. Anna Llordes,from CIC Energigune, and Prof. Maria Ibañez, from the Institute of Science and Technology (IST), Austria.

The Surface Chemistry of Metal Fluoride Nanocrystals

Date: Wednesday, 31 October 2018foto 1
Time: 11 am
Venue: Sala de Graus, Facultat de Ciències, UAB

Abstract: This thesis is mainly based on the understanding the synthesis and the final behaviour of the surface of LnF3 nanocrystals. In consequence, this knowledge will allow the control and manipulation of the bridge between synthesis and applications, currently called surface chemistry.

Starting from the successful synthesis of fifteen different types of inorganic nanocrystals, the general trends of metal fluoride nanocrystals is successfully unravelled. A new kind of ionic self-assembly in colloidal systems is postulated and  thermodynamically stable patchy nanocrystals also obtained. Using experimental techniques and molecular dynamics simulations, a self assembly mechanism also applicable to other kind of systems is postulated and we demonstrate that the different facets of the patchy nanoparticles can be modified selectively.

Supervisors:

  • Dr. Susagna Ricart, ICMAB
  • Dr. Ramon Yañez, UAB
  • Dr. Jordi Faraudo, ICMAB

PhD Committee:

  • President: Dr. Daniel Maspoch, ICREA Research Professor, Supramolecular NanoChemistry & Materials Group, ICN2
  • Secretary: Dr. Anna Llordes, Solid Electrolyte Groups, Asociate Researcher (Ikerbasque Fellow) CIC Energigune, Basque Country, Spain 
  • Vocal: Prof. Maria Ibañez, Assistant Professor, Functional Nanomaterials, Institute of Science and Technology (IST) Austria

ICMAB Periodical Lecture_Joffre Gutiérrez High temperature nanostructured superconductors: a tool for new technologies”_29 Oct_12 pm

 
Dear friends and colleagues,
 
It is a pleasure for us to invite you to the in-house ICMAB Periodical Lecture entitled:
 
High temperature nanostructured superconductors: a tool for new technologies
 
by Joffre GUTIÉRREZ ROYO, Institut de Ciencia de Materials de Barcelona (ICMAB-CSIC)
 
Monday, 29 October 2018 at 12 pm
ICMAB – Sala d’Actes Carles Miravitlles
Abstract:
Upon the revolution of high temperature superconductors, nanostructured coated conductor (a thin layer of high-temperature superconductor ceramic material deposited on top of flexible metallic substrates) emerged as a smart conception to leap forward high temperature superconductors’ cost/performance to material device integration levels.The fabrication of RE(=Y,Gd)Ba2Cu3O7-x nanostructured coated conductors by the incorporation of nanosized oxide secondary phases has been shown to strongly enhance their performances, ensuring great potential for use in a broad number of applications.
 
In this seminar we will discuss the different technological areas where high temperature superconductors are ready to outperform current technologies. In particular, we will present in detail how coated conductor nanocomposites can help in developing the future circular hadron-hadron (FCC-hh) collider. The FCC-hh is a CERN study for a next generation particle accelerator aiming at 100 TeV center-of-mass collision energy in a 100 km circumference ring. A beam screen shall absorb the synchrotron radiation generated by the proton bunches and shield the 1.9 K cooled superconducting magnets used to steer the beams. State-of-the-art Cu-based technology used in the beam screen chamber of the large hadron collider operates down to 4.2K. For the FCC-hh, having the 100 km beam screen operating at 4.2K is economically and energetically not viable.
 
A more energetically efficient and greener option is to held the beam screen at around 40K – 60K. Unfortunately, Cu in this temperature range will not provide low enough beam coupling impedance. To overcome these challenges, we propose to use RE(=Y,Gd)Ba2Cu3O7-x coated conductors to overlay the beam screen chamber.
 
Hosted by Teresa Puig, Group Leader of the SUMAN group
 
 

Superconducting materials and levitation of magnets with Teresa Puig in “Els Matins de TV3

On Thursday 11 October 2018, the programme “Els Matins de TV3”, directed by Lídia Heredia, interviewed researcher Teresa Puig about the superconducting materials, in their section devoted to science, and presented by Daniel Arbós. The section, of more than 18 minutes long, explains what superconducting materials are, what are their main applications, and shows the levitation experiment.

Enjoy the view!

 

video

Congratulations to Dr. Bernat Mundet, new SUMAN-ICMAB graduate!

Dr. Bernat Mundet defended his PhD thesis on “Atomic-scale characterization of structural distortions in perovskite oxide thin films”Monday, 9 October 2018, with great success, surrounded by his friends, family and colleagues! Congratulations!

Title: Atomic-scale characterization of structural distortions in perovskite oxide thin films

Date: Monday, 8 October 2018
Time: 4:30 pm
Venue: Sala d’Actes Carles Miravitlles, ICMAB

Abstract: In this thesis, we investigate the structural distortions appearing in three different kind of perovskite oxides that are fabricated as thin films following a chemical solution deposition process.  In the first case, we study how the YBCO lattice is distorted around its most common defect, this is the Y124 intergrowth. Secondly, we investigate which structural mechanisms help to accommodate the strain generated by the substrate mismatch in nickelate thin films. Finally, we study how the spatial confinement influences both the physical and structural properties of La0.7Sr0.3MnO3/SrTiO3 heterostructures.

Supervisor:

  • Jaume Gázquez, Superconducting Materials and Large Scale Nanostructures (ICMAB)

PhD Committee: 

  • President: Francesca Peiró (UB)
  • Secretary: Felip Sandiumenge (ICMAB)
  • Vocal: César Magén (Instituto de Ciencia de Materiales de Aragón (ICMA))

Institut de Ciència de Materials de Barcelona ICMAB CSIC

Address


Campus de la UAB, 08193 Bellaterra, Barcelona, Spain
+34 935 801 853 ext 371 
hr_suman@icmab.es