The project’s investment aims to enable the creation of scientific knowledge and the provision of high-scientific services for the characterisation of materials for modern semiconductors, nano-, bio- and light technologies, in a wide spectral range of optical and mass spectroscopy methods. The project will expand and modernise the Spectroversum infrastructure of Vilnius University and the Centre for Physical Sciences and Technology of the State Research Institute (Sunrisis al.3 Vilnius), as well as provide access to high-level European research infrastructure — the Swedish National Synchrotron Radiation Laboratory MAX IV. The modernisation and development of Spectroversum infrastructure will provide an opportunity to investigate rapid diffusion processes in organic and hybrid formations used in the construction of photovoltaic cells and sensors. It will be possible to investigate structural changes in biomolecules. It is planned to significantly modernise the vibration spectroscopy equipment by extending the range of samples suitable for analysis, the range of frequencies to be recorded and the range of temperatures of the sample. It is intended to bring the unique accelerator mass spectrometer equipment closer to the user by purchasing accessories that will significantly accelerate the preparation of samples. The project contributes to the achievement of the objective of the European Union Strategy for the Baltic Sea Region to enhance the prosperity of the region, in line with the policy area “Innovation” in the EU-SBSR Action Plan approved by EC Decision SWD(2015)177 of 10 September 2015. Modernisation of SPECTROVERSUM infrastructure, opening up of the international research network and participation in MAX IV activities will strengthen interregional cooperation — enable research laboratory researchers from other countries to carry out joint projects, accelerate the exchange of new knowledge and ideas, which will increase the value of knowledge creation in participating countries. The possibility of carrying out unique spectral experiments will have an impact on the development and development of different scientific fields.