Seminar Announcement: Monica Bollani

posted Oct 12, 2020, 2:40 AM by Stefano Varas   [ updated Oct 12, 2020, 2:41 AM ]

Monday, 19 October 2020, 15:00
Sala Grande Palazzina B via alla Cascata 56/C

"Solid-state dewetting of Si(Ge)-based complex nano-architectures and their applications in photonics and bio/chemical sensing"

Monica Bollani
Institute for Photonics and Nanotechnologies, CNR,
Laboratorio LNESS,
via Anzani 42,
22100 Como, Italy

Silicon-based nanocrystals represent a promising resource both for next generation electronic devices and for nano-photonics applications but require precise size, shape and position control. However, owing to their large surface-area-to-volume ratio, thin semiconductor solid films are often unstable upon annealing. Under the action of surface diffusion, the film breaks eventually forming isolated islands. This is one of the main factors impeding the use of ultra-thin silicon films on insulators (UT-SOI) for the further miniaturization of electronic components. Today we propose to exploit the natural instability of thin solid films (solid state dewetting of silicon and germanium) to form complex patterns and nano-architectures (e.g. monocrystalline atomically-smooth structures, disordered hyperuniform metamaterials) that cannot be implemented with conventional methods. These patterns are used as: i) epitaxial platforms for the growth of light-emitting III-V compounds; ii) hard-masters for nano-imprint lithography of metal oxides (e.g. TiO) deposited via sol-gel dip-coating (soft-NIL) and printed on arbitrary substrates, with tunable chemical and physical properties (e.g. composition, porosity, wettability). Methods and structures are optimized towards their exploitation in two main domains of application: 1) photonic devices (e.g. anti-reflection coatings, colour-filters, random lasers, quantum emitters) and 2) micro-fluidic devices for bio/chemical sensing and water filtering. The research activity is performed in the framework of the EU H2020 FET-OPEN NARCISO (Grant No. 828890)

Maurizio Mazzola

posted Aug 1, 2020, 1:32 AM by Stefano Varas   [ updated Aug 24, 2020, 6:32 AM ]

Dear Maurizio,
we are indebted with you for your friendship, your willingness and for the effective technical contribution to IFN Trento.
We wish you pleasant times and many satisfactions!
Your Friends

Specil Issue FLEXIBLE PHOTONICS: a multidisciplinary tool enabling sustainable development

posted Jul 14, 2020, 6:22 AM by Stefano Varas   [ updated Jul 14, 2020, 6:23 AM ]

FLEXIBLE PHOTONICS: a multidisciplinary tool enabling sustainable development

Final deadline for submission: 30-September-2020
Final deadline for acceptance: 31-December-2020

More detailed information can be found on the webpage:

Special Issue Photonic Glass-Ceramics: Fabrication, Properties and Applications

posted Jul 14, 2020, 6:20 AM by Stefano Varas   [ updated Jul 14, 2020, 6:21 AM ]

A special issue of Applied Sciences (ISSN 2076-3417). This special issue belongs to the section "Optics and Lasers".
Deadline for manuscript submissions: 30 November 2020.

More detailed information can be found on the webpage:

Certificate of Excellent Reviewer Awarded to Alessandro Vaccari

posted Jul 10, 2020, 3:45 AM by Stefano Varas   [ updated Jul 10, 2020, 4:20 AM ]

We are pleased to congratulate with our External Collaborator Alessandro Vaccari, who has been awarded with the certificate of appreciation for acting as an excellent reviewer for Optical Materials.

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