By Pacôme Delva (Observatoire de Paris) et Guillaumle Lion (IPGP Géodésie)

Thursday the 21st of novembre 2019 at 11H00 – Salle 310 – IPGP – ÎLOT CUVIER

Abstract :
The measurement of time has always been closely related to the
observation of the Earth. Today, the best optical atomic frequency
standards can reach inacurracies around 10?18 in terms of relative
frequency. Because time flow is affected by gravity, it means optical
clock comparisons could measure gravity potential differences with an
accuracy of 0.1 m2/s2, which is equivalent to 1-cm in height difference,
opening new fields of fundamental and applied research.
In this talk, we will introduce what is an optical atomic clock and
how remote clock comparisons could help us improve the knowledge of the
Earth’s gravity field. Then, we will present various applications that
could bring the exploitation of clock measurements in geodesy:
determination of the geopotential with high spatial resolution, vertical
reference system, and we will discuss the possible applications
associated to the geodynamic processes related to mass transfers.

The Midi-Pyrénées observatory organizes a national colloquium (conferences and poster exhibition) entitled “GNSS for science”, on February 4, 2020 at the Concorde Amphitheater, building U4, Paul Sabatier University, Toulouse.

Free but mandatory registration and poster submission before 2019/12/31 on https://gnssciences.sciencesconf.org

Call for papers: Authors of research on scientific applications of GNSS methods are invited to present them in the form of posters. To submit a poster, send a summary of approximately 500 words (1 A4 page) in French. Abstracts will be distributed during and after the colloquium.

Evening tribute to Richard Biancale: Monday, February 3 from 19 hours, Osete Room, Espace Duranti, 6 Rue Lieutenant-Colonel Pélissier, Toulouse. The Midi-Pyrénées Observatory, its parent institutions and the scientific networks of the French geodesy will pay tribute to Richard Biancale. Lecture by Georges Balmino (emeritus researcher at CNES).

This event is organized by the Midi-Pyrénées Observatory with the support of its parent institutions (CNRS, IRD, Paul Sabatier University, CNES, Météo-France), and by the COMET-PDS, the G2, the GRGS, the CNFGG and the AFT.

Valentin CAMBIER will defend his PhD thesis the 6th of December 2019 in Paris on: “Mercury optical lattice clock exploiting a 2D-MOT : lifetime of the 3P0 state and frequency measurement” prepared at SYRTE under the direction of Sébastien Bize.

The defense will take place Friday the 6th of December at 2pm in salle Cassini of Observatoire de Paris (77 avenue Denfert Rochereau). The defense will be in French.

William D. Phillips, Nobel prize in Physics 1997, Univerisité of Maryland, USA, will give a general public conference in French on the impact of quantum metrology.

Tuesday December 10th 2019 at 8pm. Location: Auditorium of the Pierre and Marie Curie Campus
4 place Jussieu 75005 Paris
Free entrance after mandatory registration here

FIRST-TF and CONNEX-TF seen by Bretagne Développement Innovation (BDI), creator and manager of the Craft platform which hosts CONNEX-TF

=>More information.

The Félix Robin 2019 award, from the Société Française de Physique, goes to François Nez (LKB), for “the very good qualtiy of all his work”.

=>More information.

Paul CHAPELLIER will defend his thesis on 9th of December 2019 at 2pm on the subject “Piezoelectric MEMS for Time and Frequency applications”, realized at ONERA under the supervision of Bernard DULMET (FEMTO-ST) and Pierre Lavenus (ONERA/DPHY).

The defense will take place in salle Contensou at the ONERA centre of Châtillon, 29 avenue de la Division Leclerc, 92320 Châtillon
Please contact sylvie.nicolle-douet@onera.fr for the formalities necessary to access the site

Amina SAADANI will defend her thesis on 12th of December 2019 at 2:30 pm on the subject “bidimensional crystals for ultra-high quality factor micro/nano-piezoelectric resonators”, realized at ONERA under the supervision of Fabrice Sthal (FEMTO-ST), Olivier Le Traon and Pierre Lavenus (ONERA/DPHY).

The defense will take place in salle Ay-02-63 of the Centre de Meudon de l’ONERA, 8, rue des Vertugadins, 92190 Meudon
Please contact sylvie.nicolle-douet@onera.fr for the formalities necessary to access the site

We welcome you to IFCS-ISAF2020, a joint meeting that highlights and celebrates the shared interests and expertise of the Frequency Control and Ferroelectrics communities! Whether your interests are in atomic clocks, piezoelectric transducers, MEMS resonators, or other related topics shown below, you’ll find a welcoming and vibrant community of researchers and potential collaborators in Keystone next July.

Topics:

• Resonators, & Resonator CircuitsMaterials,
• Oscillators, Synthesizers, Noise & Circuit Techniques
• Microwave Frequency Standards & Applications
• Sensors & Transducers
• Optical Frequency Standards & Applications
• Fundamentals of Ferroelectricity and Piezoelectricity
• Materials Processing, Fabrication, and Integration
• Characterization and Measurement
• Ferroelectric-Enabled Applications
• Integrated Materials and Device Modeling and Design
• Thin Film Ferroelectrics for MEMS
• Timekeeping, Time & Frequency Transfer, GNSS Applications

2020 is the 100th Anniversary of the discovery of Ferroelectricity. Check the website for updates on Celebrations during IFCS-ISAF 2020.

Important Dates:

• Abstract Submission Deadline: February 17th
• Acceptance Notification: April 2nd
• Early Bird Registration Deadline: May 15th

=> More information.

TimeWorld en bref : 60 conférences et 5 tables rondes, 72 ateliers éducatifs et fablabs, 500 m² d’exposition, 3 spectacles d’exception.

Les quatre temps :

• Le temps mesuré : systèmes de mesure, astrophysique, cryptographie, systèmes de navigation, exploration spatiale, industrie du futur, cybersécurité.
• Le temps de l’évolution : paléontologie, biologie, géologie, médecine, biosphère, géosphère.
• Le temps perçu : neurosciences, sociologie, économie, finance, information numérique, mythanalyse.
• Le temps dans l’art : musique, littérature, science-fiction, cinéma, peinture, photographie, jeux vidéo.

21-22-23 novembre 2019, Cité des sciences et de l’industrie (Paris, France).

=> Plus d’informations, agenda, contenus, billetterie.