German SME designing aberration correctors and precision electron optical systems for next-generation transmission electron microscopes.
CEOS GmbH designs and manufactures aberration correctors and precision electron optical components for transmission electron microscopes (TEM). Their hardware directly enables atomic-resolution imaging and spectroscopy — without their correctors, modern high-resolution electron microscopy at leading research facilities would not be possible. As a technology SME, they contribute not just components but deep engineering expertise in electron optics, including the design of novel spectrometers capable of resolving the momentum and energy of quasiparticles in advanced materials. In the MORE-TEM project, they are building a fundamentally new type of TEM instrument optimized for studying quantum phenomena in 2D materials and heterostructures.
The company name itself — Corrected Electron Optical Systems — reflects their founding mission, and both ESTEEM3 and MORE-TEM rely on their aberration-correction hardware and optics expertise.
MORE-TEM (2021–2027) is explicitly building a momentum- and position-resolved EELS microscope, with CEOS contributing the electron optical design of the new instrument.
ESTEEM3 (2019–2023) is a pan-European research infrastructure network for electron microscopy, where CEOS participated as an industrial technology partner.
MORE-TEM targets phonons, plasmons, excitons, and hierarchical quantum matter — application domains CEOS has entered through their MORE-TEM instrumentation role.
In their earliest H2020 engagement (ESTEEM3, 2019), CEOS operated as an enabling technology supplier within a broad infrastructure context — general TEM capabilities covering imaging, diffraction, metrology, and in-situ spectroscopy across ICT, energy, and health applications. By 2021, their focus had sharpened dramatically toward a specific scientific frontier: momentum-resolved electron energy loss spectroscopy (EELS) for quantum materials, with keywords like phonons, plasmons, excitons, and 2D heterostructures replacing the broad infrastructure language. This signals a deliberate move from being a general TEM hardware supplier toward becoming the go-to engineering partner for next-generation, scientifically specialized instruments at the frontier of condensed matter physics.
CEOS is moving toward bespoke instrument development for frontier quantum materials research, positioning themselves as the engineering partner of choice when existing commercial TEM instruments cannot meet the scientific requirements.
CEOS participates exclusively as a specialist partner — they have never coordinated an H2020 project, which is consistent with the role of a precision hardware SME that joins consortia when their unique electron optics expertise is essential. Their participation in consortia of 26 partners across 14 countries suggests they are comfortable operating within large, internationally distributed research teams where their contribution is well-defined and technical. They appear to be brought in to solve specific instrumentation problems that no academic group could solve alone.
Despite only two projects, CEOS has built connections with 26 unique consortium partners spanning 14 countries — an unusually broad network for a two-project SME, reflecting the large pan-European consortia typical of research infrastructure projects like ESTEEM3. Their network is geographically European in scope, centered on the electron microscopy and condensed matter physics communities.
CEOS occupies a rare niche: they are one of very few companies globally that can design and manufacture aberration correctors for electron microscopes, making them technically irreplaceable in high-end TEM instrument development. As an SME, they combine the deep specialization of a research institute with the ability to deliver engineered hardware — a combination that large instrument manufacturers (FEI/Thermo Fisher, JEOL) do not offer for custom or experimental configurations. For any consortium needing to push TEM technology beyond what is commercially available, CEOS is effectively the only European SME that can fill that role.
