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ISAE-SUPAERO Researchers Receive IEEE NSREC 2025 Outstanding Paper Award for Advance in Space Imaging Sensor Physics

Publication Date

26 May 2026

Category

Research

Researchers from ISAE-SUPAERO and their partners have received the Outstanding Conference Paper Award at the IEEE (Institute of Electrical and Electronics Engineers) Nuclear and Space Radiation Effects Conference 2025 (NSREC) in Nashville, Tenessee, the most important international conference dedicated to radiation effects in electronic systems for space and nuclear applications.

A major scientific advance

This award recognises a major scientific advance: the direct observation, characterisation and simulation of individual radiation-induced defects in silicon, using very high-sensitivity CMOS imaging sensors.

From left to right: Vincent Goiffon, Anne Hémeryck, Aubin Antonsanti, Richard Monflier, Antoine Salih Alj, Clémentine Durnez, Valérian Lalucaa, Cédric Virmontois, and Antoine Jay (not pictured: Vera Kharchenkova)

A new window on the physics of defects in space sensors

For decades, semiconductor defects induced by radiation or manufacturing processes have been extremely difficult to study on the scale of a single defect. Yet they play a decisive role in the degradation of imaging sensors used in space, affecting image quality, noise and long-term stability.

By exploiting the exceptional sensitivity of modern CMOS sensors, the research team has transformed each pixel into a micro-detector capable of tracking the behaviour of individual defects, typically involving one or two atoms, directly within a fully functional device.

The study shows that very simple atomic defects can generate complex temporal fluctuations in the signal, resulting in pixels flashing at random in the images. These effects have been linked to specific types of defect, providing a novel experimental understanding of their physical origin and behaviour.

Figure 4: Illustration of the creation of a point defect (size < 1 nm) in a pixel (typical size 1 µm on a side) and its impact on an image.

Important work for future space missions

The aim of this research is to improve fundamental understanding of radiation-induced defects in semiconductors. This knowledge is essential for :

  • improve the performance and reliability of semiconductor devices after manufacture,
  • improve the robustness of space imaging sensors exposed to radiation,
  • develop more predictive and physical models of the effects of radiation in space systems.

These results are particularly important for future space missions, where imaging performance and detector stability are critical in increasingly demanding radiation environments.

Figure 5: Atomic-scale simulation of a point defect in silicon. Mesh parameter = 0.5 nm.

ISAE-SUPAERO at the cutting edge

This breakthrough was achieved at ISAE-SUPAERO because it required a rare combination of skills: mastery of advanced CMOS imaging sensor technologies and in-depth expertise in the effects of radiation in semiconductors. These two fields have been at the heart of the activities of the Capteurs d’IMage Intégrés (CIMI) group within the DEOS department for more than two decades.

The work has also benefited from access to advanced semiconductor technologies, state-of-the-art characterisation resources and irradiation facilities, enabling a comprehensive analysis of the physical phenomena induced by radiation.

Figure 6: Illustration of a flashing pixel signal induced by the instability of one or two atoms in a pixel.

Strong scientific collaboration

This research was made possible by close collaboration with several major partners:

  • Centre National d’Études Spatiales (CNES): access to advanced technologies, irradiation facilities and key expertise in the space radiation environment;
  • LAAS-CNRS: expertise in atomistic simulation (ab initio), essential for interpreting the results;
  • CEA DAM: particle-matter interaction simulations, expertise in irradiation-induced defects in semiconductors
  • Sodern: expertise in the effects of radiation in imaging detectors and semiconductor defects.

Towards more robust space imaging technologies

Beyond this award, this work opens up new perspectives for understanding and controlling semiconductor defects in advanced technologies. Current and future research will aim to identify in detail the different types of defects generated during manufacture or under irradiation, to gain a better understanding of the physical origin of pixel flicker phenomena, and to improve prediction of the behaviour of future imaging technologies in the space environment.

These advances will contribute to the development of more robust and efficient imaging systems for future space missions, as well as for the general public, while advancing our knowledge of the expression of semiconductor defects at the atomic scale and their fundamental behaviour.

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Videos

Discover... the ISAE-SUPAERO irradiator

ISAE-SUPAERO – as a centre for training through research, research training and innovation – has a wide range of research equipment used within its six research departments. Today, we present the irradiator! As part of its research activities, ISAE-SUPAERO develops electronic components and systems for scientific and space applications. Space is a very aggressive environment, particularly because high-energy particles emitted by the sun or trapped in radiation belts threaten the health of astronauts, the properties of materials and the proper functioning of electronic chips. In order to reproduce the effects of this ionising radiation on electronic technologies in the laboratory, ISAE-SUPAERO has acquired an X-ray irradiation chamber with an energy of up to 320 keV. This video shows a typical use of this equipment: an electronic component to be tested is placed in the irradiation chamber, the X-ray tube is switched on, and the effects on the component's operation (in this case, an image sensor) are observed and measured in real time.

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Communication and Information Theory (ComiT) Scientific Group

The “Communication and Information Theory” (ComiT) scientific group is involved in the disciplines of digital communications, radar, and channel access techniques. Its fields of application include space systems, civil and military aviation, terrestrial cellular networks and the Internet of Things (IoT).

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Doctoral program

Doctoral student

News

Researchers from ISAE-SUPAERO contributed to the success of the first images from ESA's Sentinel 2c observation satellite.

The Sentinel 2c Earth observation satellite, launched on 5 September as part of ESA's Copernicus mission, has delivered its first images. This success is partly due to the image sensor research team (CIMI) at ISAE-SUPAERO, which designed and oversaw the manufacture of the visible image sensors.

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Space

News

An exceptional scholarship for an innovative project

Naomi Murdoch, a researcher in physics and planetology at ISAE-SUPAERO, has just been awarded the prestigious Consolidator Grant from the European Research Council (ERC) for her planetary body study project called GRAVITE. This ambitious scientific project aims to design a variable gravity machine that will enable the simulation and study of extraterrestrial soils.

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Scholarship

Space