Dear Colleagues, 

We invite researchers and students to participate in the Fourth General 
Meeting of the COST Action CA21101 (COSY), COnfined Molecular SYstems: 
from a new generation of materials to the stars, to be held in Madrid 
(CSIC Central Campus), Spain, from 27-29 April 2026. Participation is free 
of charge, with an early registration deadline of 1 February 2026 
(https://fourth-general-meeting.cost-cosy.eu). 

COST (European Cooperation in Science and Technology) is a funding agency that 
supports research and innovation networks, connecting research initiatives 
across Europe and enabling scientists to develop their ideas through 
collaboration and knowledge exchange with peers (https://www.cost.eu). 
The COST Action COSY (http://www.cost.eu/actions/CA21101) is dedicated 
to advancing the understanding of key experimental and theoretical challenges 
related to the characterization of confined molecular systems. 
The Fourth General Meeting will feature scientific sessions covering the 
activities of the five Working Groups of the COST Action: 

Working Group 1: Fundamental studies of molecular interactions: new methods, 
benchmarks on confined systems. 

Working Group 2: Molecular motion in porous, biomolecular and 
environmental-confined systems via advanced simulation methods. 

Working Group 3: Advanced theory and experiments on confined metal/oxide 
clusters for catalytic and nanotechnology applications. 

Working Group 4: Time-resolved and reactive dynamics, spectroscopy, and 
simulations of molecules in He nanodroplets. 

Working Group 5: Computational, theoretical, and experimental investigation 
of the formation of molecules and matter in the interstellar medium and in 
planetary and solar atmospheres. 

The program will include invited lectures from the following speakers: 

Kestutis Aidas (Vilnius University, Lithuania)
Liudmil Antonov (Bulgarian Academy of Sciences, Bulgaria)
Malgorzata Biczysko (University of Wroclaw, Poland)
Avelino Corma Canos (UPV-CSIC, Spain)
Attila G. Csaszar (ELTE, Hungary)
Alessandro Fortunelli (CNR, Italy)
Berta Fernandez (USC, Spain)
Sonja Grubisic (University of Belgrade, Serbia)
Majdi Hochlaf (Gustave Eiffel University, France)
Lauri Halonen (University of Helsinki, Finland)
Dariusz Kedziera (Nicolaus Copernicus University, Poland)
Teodora Kirova (University of Latvia, Latvia); 
Maria J. Lopez Santodomingo (University of Valladolid, Spain)
Jorge M. C. Marques (University of Coimbra, Portugal)
Fernando Martin Garcia (UAM, Spain)
Markus Meuwly (University of Basel, Switzerland)
Francesca Mocci (Universita Degli Studi Di Cagliari, Italy)
Marcel Mudrich (University of Kassel, Germany)
Martin Quack (ETH Zurich, Switzerland)
Sergiy Perepelytsya (National Academy of Science, Ukraine)
Cristina Puzzarini (University of Bologna, Italy)
Felix G. Requejo (UNLP and CONICET, Argentina)
Maria Luisa Senent-Diez (CSIC, Spain)
Paul Scheier (University of Innsbruck, Austria)
Kaido Sillar (University of Tartu, Estonia)
Ignacio Sola (UCM, Spain)
Vladimir Sreckovic (Institute of Physics Belgrade, Serbia)
Marinella Striccoli (CNR, Italy)
Stefan Vajda (Czech Academy of Science, Czech Republic)
Niyazi Bulut (Firat University, Turkey)
Piotr Zuchowski (Nicolaus Copernicus University, Poland).

Best regards,

The organizers,

Maria Pilar de Lara-Castells (AbinitSim Unit, AbinitFot Group, IFF-CSIC, Spain)
Katarzyna M. Krupka (AbinitSim Unit, AbinitFot Group, IFF-CSIC, Spain)
Alberto Garcia-Vela (AbinitFot Group, IFF-CSIC, Spain)
Alexander Zanchet (IFF-CSIC, Spain)
Manuel Mendoza Hurtado (UCO, Spain)

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