Past Events

Seminar Announcement: Tatsuya Mori

posted Dec 7, 2017, 12:00 AM by Stefano Varas   [ updated Dec 7, 2017, 12:00 AM ]

Wednesday, 6 December 2017, 15:00
Sala Grande Palazzina B via alla Cascata 56/C

Boson peak investigation of glassy materials by terahertz time-domain spectroscopy

Tatsuya Mori
Division of Materials Science Faculty of Pure and Applied Sciences
University of Tsukuba, 1-1-1 Tennoudai, Tsukuba, Ibaraki 305-8573, Japan

The boson peak (BP) has been one of the unsolved problems on glass physics, and it appears in the THz region as a universal excitation. The BP is famously detected by inelastic neutron or X-ray scattering, low-frequency Raman scattering, and low-temperature specific heat measurements. On the other hand, there have been few experimental investigations by far-infrared spectroscopy, although the technique is complemental method of Raman spectroscopy.
Recently, we showed that THz time-domain spectroscopy is suitable technique for the detection of the BP [M. Kabeya, T.M. et al., Phys. Rev. B 2016]. One of the advantages of the THz spectroscopy is the ability to determine the absolute value of the infrared light-vibration coupling coefficient (CIR).
In this lecture, we evaluate the CIR of the glassy glucose using Taraskin’s universal model [S. N. Taraskin et al., Phys. Rev. Lett. 2006]. We will see that the large absorption in the vicinity of the BP of the glassy glucose is caused by both the “light mass” effect and the disordered charge distribution.


posted Dec 4, 2017, 1:16 AM by Stefano Varas

7th International Workshop on Photoluminescence in Rare Earths (PRE'17): Photonic Materials and Devices
November 30 - December 2, 2017 | Rome, Italy

PRE’17 is the seventh event in the series of International Workshops covering a wide range of research topics concerning the properties and applications of rare-earth ions in optoelectronics and photonics. The series begun in Trento, Italy in May 2005 (PRE’05), followed by PRE’07 again in Trento, PRE’10 in Firenze (Italy), PRE’12 in Kyoto (Japan), PRE’14 in San Sebastián (Spain), PRE’16 in Greenville (USA). The next event, after the decision to move the Workshop to the odd years, will be held in Rome, Italy, at the end of 2017.

More than 600 scientists and students from more than 30 countries, in total, have attended the previous Workshops. The average size of each event, around 100 people, makes for a collegial environment where students and world experts can mingle and talk in an informal and effective way.

Over the past decade, an increasing number of luminescent materials have been reported, based on the properties of rare earth ions embedded in different matrices (crystalline, amorphous and glass ceramics; oxides, fluorides, chalcogenides, organics, ….) or contained in molecular complexes.
These materials have already been been widely employed in light sources and amplifiers, optical displays, fluorescent probes, luminescent labels, frequency converters, detectors, and so on, thus covering fields ranging from telecommunication to sensing, from medical diagnosis to energy. Despite of it, there are still increasing demands for novel functions to further extend their practical applications.

This PRE Workshop, like the previous ones, aims at providing a forum for material scientists, chemists and physicists where to debate about the state of the art and the perspectives of the photonic materials based on rare earth ions. Both fundamental photoluminescence properties and application oriented material investigations will be considered.
We would like to welcome all the interested experts from different countries in the world to PRE’17, which will be held on November 30 - December 2, 2017 in one of the most ancient and beautiful cities in the world: Roma.

Dominik Dorosz, Maurizio Ferrari, Laeticia Petit
PRE’17 co-chairs

Giancarlo C. Righini
PRE’17 honorary chair

Esploratori della Fotonica

posted Nov 20, 2017, 12:16 AM by Stefano Varas   [ updated Nov 20, 2017, 12:16 AM ]

Presentato al Liceo Galilei il progetto coordinato dall' Istituto di Fotonica e Nanotecnologie in collaborazione con la Fondazione Bruno Kessler

7 novembre 2017 - Attivita di Outreach: Workshop “La Fotonica per le scuole”

posted Nov 20, 2017, 12:14 AM by Stefano Varas

L’ IFN-CNR Trento nell’ambito del progetto di outreach Esploratori della Fotonica, concernente la divulgazione e disseminazione della Fotonica, il giorno 7 novembre 2017, terrà un workshop per gli insegnanti delle scuole secondarie di secondo grado sull’impiego di nuove metodologie per l’insegnamento della Fotonica con l’ausilio di kit didattici.

SHIFT 2017

posted Nov 20, 2017, 12:12 AM by Stefano Varas

Spectral sHapIng For biomedical and energy applicaTions
Tenerife, Canary Islands, Spain
November, 13-17, 2017

Important dates
Abstract submission: open from december 2016

Spectral shaping of light is an emerging route for enhancing the efficiency of various solar energy harvesting, storage and conversion processes facing the increasing demand for energy supply, from photovoltaics to photocatalysis, natural and artificial photosynthesis and solar fuels generation, where usually large parts of the solar spectrum are not efficiently utilized. Moreover the use of light in life sciences, within the well-known infrared therapeutic windows (deeper penetration and lower tissue damage) and subsequent wavelength transformation to higher or lower energies provides ground-breaking applications in photodynamic cancer therapy and bio-imaging. Interdisciplinary efforts from physics, chemistry, biology, medicine, materials science and engineering will certainly be required to overcome current challenges leading the way for spectral shaping of light to be a future key technology.

"SHIFT 2017" International Conference shows up as a cutting-edge multidisciplinary platform to gather presentations and discussions of recent achievements by leading researchers in wavelength shifting luminescence processes (quantum cutting, down-shifting, up–conversion...), as a very promising and not yet fully explored route.

Join us in warm and sunny Tenerife (Canary Islands) in November 2017 to make a significant shift to state-of-the art spectral shaping for biomedical and energy applications.

The SHIFT happens in Tenerife!

Seminar Announcement: Simone Normani

posted Nov 3, 2017, 6:10 AM by Stefano Varas   [ updated Nov 3, 2017, 6:11 AM ]

Tuesday, 31 October 2017, 15:00
Sala Grande Palazzina B via alla Cascata 56/C

CaF2:Nd,Lu Crystals for High-Energy Lasers

Simone Normani
Centre de recherche sur les Ions, les Matériaux et la Photonique (CIMAP), UMR 6252
CEA-CNRS-ENSICAEN, Université de Caen, 6 Blvd Maréchal Juin, 14050 Caen,

It was recently demonstrated that efficient and broadband laser emission was possible with Nd-doped CaF2 and SrF2 single crystals around 1.05 μm. Such laser emission, known as completely quenched because of cross-relaxation in the singly doped fluorites, increases spectacularly by co-doping with non-optically active “buffer” ions like Y3+ or Lu3+. Broadband laser emission and ultra-short laser operation are therefore possible. The material is particularly appealing for large scale high peak power diode-pumped amplifiers. In the framework of the LASCAN project for the improvement of the Laser MégaJoule and Petawatt Aquitaine Laser, a deep investigation of the spectral properties of CaF2:Nd3+ crystals co-doped with various amounts of Lu3+ was performed. The cluster breaking effect of Lu3+ codoping has as a side-effect the appearance of two different contributions, identified as two different active sites, which is in agreement with recent observations. In this work, we detail the different centres’ spectroscopic properties and operational parameters for laser applications, their evolution as the lutetium concentration increases, and the thermomechanical properties of said samples. A preliminary investigation on the amplification properties and laser operation of said materials is performed as well.

Menzione Speciale - 103° Congresso Nazionale SIF 2017

posted Oct 20, 2017, 2:30 AM by Stefano Varas   [ updated Oct 20, 2017, 2:30 AM ]

We are pleased to congratulate with our colleague Andrea Chiappini, whose communication "Colloidal crystals: a suitable tool for the development of nanoscale responsive structures." at Congresso Nazionale SIF has been selected by the scientific committee as “comunicazione con menzione speciale” in the section Fisica applicata, acceleratori e beni culturali.

Seminar Announcement: Zeno Gaburro

posted Oct 13, 2017, 12:26 AM by Stefano Varas   [ updated Oct 13, 2017, 12:26 AM ]

Thursday, 12 October 2017, 15:00
Sala Grande Palazzina B via alla Cascata 56/C

"Training a new generation of leaders for Africa"

Zeno Gaburro
University of Trento and African Leadership University (Mauritius)

In 2014, Fred Swaniker has suggested that the training of a new class of leaders is the decisive step for African development. He has founded the African Leadership University (ALU), an excellence network with the mission of building 25 innovative campuses across Africa in the next decades. The first campus was opened in Mauritius in 2015, and the second this year in Rwanda. The model of these campuses is strongly pan-African. Students are purposely selected homogeneously across the 54 countries of Africa, to address and foster cultural diversity. There is strong emphasis on soft skills such as verbal and written communication, team work, and project management. All degree programs include a mandatory first year (“Leadership Core”) with courses on soft skills only. I will present my experience with the degree program in Electrical Engineering, and my vision on building partnerships between ALU and European universities and companies.

[1] Fred Swaniker, “The leaders who ruined Africa, and the generation who can fix it”, TED Global Talk, 2014.

Seminar Announcement: Bakang Moses Mothudi

posted Oct 5, 2017, 12:12 AM by Stefano Varas   [ updated Oct 5, 2017, 12:12 AM ]

Wednesday, 4 October 2017, 15:00
Sala Grande Palazzina B via alla Cascata 56/C

"Structural and optical properies evaluation of NIR up-converting Er3+ doped ZnTiO3-Zn2TiO4 nanocomposite phosphor"

Bakang Moses Mothudi
University of South África

NIR up-converting Er3+ doped ZnTiO3-Zn2TiO4 nanocomposite phosphor. ZnTiO3-Zn2TiO4 doped with 2 mol% Er3+ was synthesized via solid state reaction method. The X-ray diffractometer (XRD) confirmed the crystallization of both the hexagonal ZnTiO3 and cubic spinel Zn2TiO4 phases. The phosphors were excited in the near-infrared (NIR) region with a wavelength of 980 nm diode laser, and the corresponding up-conversion emission lines were observed in the visible range at 543, 553, 650 – 670 nm, which correspond to 2H11/2, 4S1/24I15/2 and 4F9/24I15/2 transitions of Er3+ ions, respectively.

Notte dei Ricercatori

posted Oct 2, 2017, 2:39 AM by Stefano Varas   [ updated Oct 2, 2017, 3:13 AM ]

29 settembre 2017 a partire dalle 17.00
MUSE - Museo delle Scienze
Trento - Corso del Lavoro e della Scienza, 3

In occasione della Notte dei Ricercatori, sarà presente anche CNR-IFN alla postazione n.50 al secondo piano del Muse.

L'argomento trattato sarà il progetto RECOLA "Recovery of lanthanides and other metals from WEEE"
- Il recupero di terre rare dalle miniere urbane (IFN-CNR - Maurizio Ferrari, Lidia Zur, Thi Ngoc Lam Tran, Alessandro Chiasera) -

Vieni a trovarci

Le persone di riferimento sono Lidia Zur ed Alessandro Chiasera

Photo Gallery, RECOLA - Notte dei Ricercatori - 29 September 2017

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