THE 34TH JOŽEF STEFAN DAYS
Each year since 1993, at the end of March, the Institute has organised the Days of Jožef Stefan, with the aim being to popularise science and to celebrate the birthday of this great Slovenian physicist.
The 34th Jožef Stefan Days
Published: 24. mar. 2026
Programme
Monday, 23 March
13.00 (JSI Grand Lecture Hall): Opening of the 34th Days of Jožef Stefan, Prof. Dr. Leon Cizelj, director JSI
13.10 (JSI Grand Lecture Hall): Invited Lecture, Super-resolution microscopy for dynamic structural cell biology, Prof. Dr. Jonas Ries, University of Vienna, Vienna, Austria
14.30 (JSI Gallery): Exhibition opening, Directions of development: Works from the collection of the Božidar Jakac Gallery
Tuesday, 24 March
9.00 (JSI Grand Lecture Hall): Science breakfast, Interview with the author of the book on Slovenian scientists, Dr. Anton Gradišek
11.00 (JSI Grand Lecture Hall): Invited Lecture - Controlling light with light, Prof. Dr. Igor Muševič, Jožef Stefan Institute, Ljubljana, Slovenia
14.00 (ICJT P1 Lecture Hall, Brinje 40): Grand opening of the new Tandetron accelerator
18.00 (JSI Grand Lecutre Hall): Joint the event of JSI and Val 202 - The Radiovedni show live: Let the questions take the floor!
Wednesday, 25 March
11.00 (JSI Grand Lecture Hall): Presentation of RSF projects, Part 1
13.00 (JSI Grand Lecture Hall): Invited Lecture - Metals under the pressure of sustainable development, Prof. Dr. Ingrid Milošev, Jožef Stefan Institute, Ljubljana, Slovenia and Valdoltra Orthopaedic Hospital, Ankaran, Slovenia
17.00 (JSI Grand Lecture Hall): AWARD CEREMONY OF THE GOLDEN EMBLEM OF JOŽEF STEFAN
Thursday, 26 March
11.00 (JSI Grand Lecture Hall): Presentation of RSF projects, Part 2
13.00 (JSI Grand Lecture Hall): Invited Lecture - How AI learns to see, generate, and judge fairly, Prof. Dr. Nicu Sebe, University of Trento, Trento, Italy
18:00 (Kino Šiška Centre for Urban Culture): Science Slam: in collaboration with the University of Ljubljana
Friday, 27 March
9.00 – 12.00 (JSI Grand Lecture Hall and JSI laboratories): Company Representatives visit at JSI (non-public event)
13.00 (JSI Grand Lecture Hall): Invited Lecture - How communication supports us in our professional and private lives, Miha Bavec, Director of Transformacija Ltd.
Saturday, 28 March
JSI OPEN DAY 2026
Open Day at Jožef Stefan Institute is intended for the general public – anyone who wants to find out what we are researching at our institute and how this can contribute to a balanced society of the future.
The first programme section of the Open Day will start at 9am (CET) at the Jožef Stefan Institute (Jamova cesta 39). Each programme section starts at the full hour and lasts 1 hour. At 10am, 11am and 12pm, the guidance will also be in English. The last presentation will start at 1pm.
Parking will not be available at the Jožef Stefan Institute (Jamova cesta 39), but visitors will have an option to park at the parking place near the Faculty of Mathematics and Physics (Jadranska ulica 15). The number of these parking places is limited.
Visits will also take place at the Reactor center Podgorica in a close vicinity of Ljubljana (Brinje 40, 1262 Dol pri Ljubljani) in the scope of programme section 4. Presentations at the Reactor center will start at 9:30am, 10:30am, 11:30am, 12:30pm and 1:30pm. Presentations are possible also in English depending on the wishes of the visitors.
Visitors at the Reactor center have to present their ID document in order to enter. It will be possible to park near Reactor center. Free bus transport will be organized between JSI Jamova cesta 39 and Reactor center Podgorica. The number of available seats on the bus is limited.
Bus schedule: relation Jamova – Reactor: 9am, 10am, 11am, 12pm, 1pm; relation Reactor – Jamova: 9:30am, 10:30am, 11:30am, 12:30pm, 1:30pm, 2:30pm.
The number of visitors will be limited for each programme section with the aim to provide opportunity for a conversation with the researchers in each programme section. All visits are free of charge.
Visitors of the Reactor Center are kindly asked to fill out a form and give it to the security personnel at the gate. If you wish, you can print and fill out the form in advance, or you will be given a copy to fill out on the bus or at the gate. The form is valid on Open Day (28 March) only.
Visitors have to follow all requirements and recommendations. Additionally, visitors have to follow all safety instructions provided by JSI staff, especially by laboratory staff.
We kindly ask all visitors to stay in the group of each specific programme section, since visits of laboratories and other places at the Jožef Stefan Institute without JSI staff is not allowed.
Photographing inside the premises of the Institute is not allowed without consent.
Photography and/or recording will take place at the Days of Jožef Stefan for the purpose of promoting or reporting.
Cordially invited!
More informationa: https://dnevi.ijs.si/en/programme-2026/
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