Our article “Integration of High-Tc Superconductors with High-Q-Factor Oxide Mechanical Resonators” has been accepted for publication on Advanced Functional Materials."

We realized a micro-mechanical resonator showing both high mechanical Q-factor and superconductivity at 77 K. This result was achieved by integrating a high-Tc superconductor YBa2Cu3O7 (YBCO) with a high Q-factor micro-bridge resonators made of single-crystal LaAlO3 (LAO) thin films. Bare LAO resonators are tensile strained, with a stress of about 350 MPa, and show a mechanical Q-factor above 200k at room temperature. Additionally, they have low surface roughness. A YBCO film was then grown ex-situ by pulse laser deposition on top of the suspended bridges. Final devices show zero resistance below 78 K and mechanical properties similar to those of bare LAO ones. These results open new possibilities towards the development of advanced transducers, such as bolometers or magnetic field detectors, as well as experiments in solid state physics, material science, and quantum opto-mechanics.

For further readings:

N. Manca, A. Kalaboukhov, A. E. Plaza, L. Cichetto Jr., E. Wahlberg, E. Bellingeri, F. Bisio, F. Lombardi, D. Marré, L. Pellegrino, “Integration of High-Tc Superconductors with High-Q-Factor Oxide Mechanical Resonators” Adv. Funct. Mater. 2024, 2403155.

Luca Pellegrino gave an oral presentation at the online NFFA-DI workshop “Growth of epitaxial thin films and multilayers by pulsed laser deposition, with real-time and in-situ monitoring of the process and post-deposition analyses” organized on 10 July 2024 by Alessia Sambri (Cnr-Spin).

The title of the talk was “Fabrication of suspended epitaxial oxide thin films for micro & nanoelectromechanical transducers”.

Results from the OXiNEMS project have been presented at the 19th International Workshop on Nanomechanical Sensing (NMC24) in Vienna, Austria on June 24-27, 2024. This year the workshop has been organized by Prof. Silvan Schmid from TU Wien.

Luca Pellegrino gave the talk A Hybrid Superconductor/Nanomechanical Magnetic Field Detector for Biomagnetism” and Nicola Manca presented the poster “Integration of High-TC Superconductor with High Q Factor Oxide Mechanical Resonators” and the poster "(La,Sr)MnO3 trampoline resonator for room-temperature bolometers".

The OXiNEMS project is officially over! However, we will continue to communicate the developments of our activities through social media and the website

Enjoy right now our submitted article on “Integration of High-Tc Superconductors with High Q Factor Oxide Mechanical Resonators” on arXiv ! [OPEN]

 

Giving a look into literature about magnetism, one may ask a question: Which comes first? The new naming of the phenomenon, or the use of an already existing word adapted in order to describe the phenomenon?

Enjoy the paper written by Grazia Biorci from CNR-IRCrES, where she analyses the term “magnetism” in the language and literature and gives some hints on how the linguistic transmission runs along two parallel paths, in balance between the progress of scientific knowledge and the specialization of its language.

This article has been inspired by a collaboration between Grazia Biorci and the OXiNEMS project in the framework of the 20th edition of the Genoa Science Festival for the exhibition “we are all magnetic”, dealing with magnetometers for consumer applications and biomagnetism. The OXiNEMS team acknowledge Grazia for her precious support!

download article

 

Luca Pellegrino visited on 22.11.23 the Collaborative Research Centre CRC 1261 at the Faculty of Engineering of Kiel University and present the recent OXiNEMS results with a talk.

LINK to the event

Three talks at conferences by the OXiNEMS members have been done in the last month!

 

On September 8th Nicola Manca gave an oral contribution entitled  "Functional Oxides for Enriched MEMS" at the CMD30-FisMat2023 joint  conference in Milan (IT) about recent advancements in oxide nano-mechanics and the OXiNEMS project.

 

A Hybrid Superconductor/Nanomechanical Magnetic Field Detector for Biomagnetism” has been presented by Luca Pellegrino at EUCAS23 in Bologna (IT) on September 7th at 10.00 with a contributed talk.

 

 

Luca Pellegrino gave an invited talk at ICCGE20 on August 4th in Napoli (IT) with the title “The role of epitaxy in microelectromechanical systems made with transition metal oxide films”.

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