Materials & Electrical Components Laboratory

The Lab provides to Europe’s space community the facilities and expertise to investigate the effects of the environment on electrical components, materials and processes in support of advanced research and development, evaluation and qualification programmes and direct project support. In the materials domain support is provided on topics such as metallic materials, polymers, ceramics, composites as well as their associated manufacturing processes, such as curing, bonding, coatings, welding, surface mount techniques as well as cleanliness and contamination effects In the electrical components domain this encompasses all aspects of reliability analysis, failure analysis and radiation effects characterisation.

In the materials domain support is provided on topics such as metallic materials, polymers, ceramics, composites as well as their associated manufacturing processes, such as curing, bonding, coatings, welding, surface mount techniques as well as cleanliness and contamination effects In the electrical components domain this encompasses all aspects of reliability analysis, failure analysis and radiation effects characterisation.

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The Lab houses a unique collection of specially-designed facilities, including:

• Synergistic Temperature Accelerated Radiation Facilities (STAR I and STAR II)– allowing the simultaneous vacuum exposure of multiple temperature-controlled samples to different space radiation sources (electromagnetic and particle sources) and several in-situ measurement systems.

• Cross 3 Facility– allowing the simultaneous (electron and/or X-ray) irradiation of temperature controlled samples under high vacuum

• Atomic Oxygen Erosion Effects (ATOX) Facility– Producing atomic oxygen with a laser to investigate its erosion effects on temperature-controlled external samples in vacuum

• UV/VUV Chambers – (Cross1 and 2 Facility and Accelerated UV Exposure Facility (BOF))
  – for ultraviolet/vacuum ultraviolet (UV/VUV) exposure and thermal aging with in-situ thermal imaging of samples and residual gas analysis of contamination using a mass spectrometer

• High Temperature Exposure System (HITES and XTES)– exposure of samples to high temperatures in high vacuum furnaces, investigating effects of long-term thermal ageing

• Ground Storage : Humidity Test Facility– subjecting samples to 5-95% humidity at temperatures up to 100°C

• Dynamic Outgassing Facilities– Measuring the dynamic outgassing of materials or components by monitoring mass change as a function of time and temperature

• Bake Out Facility (BOF 2)– able to perform controlled bake outs in order to reach cleanliness requirements for contamination critical missions and payloads

• Particle Contamination Measurements– Including airborne particle counter, particle fall-out, optical and SEM particle counting, essential for cleanliness assessment

• Gas Chromatography/Mass Spectroscopy– Determination of Molecular Organic Contamination with Fourier Transform Infrared Spectroscopy and Gas Chromatography/Mass Spectrometry

• Photospectroscopy: Portable Thermo-Optical Device– Optical investigation of materials at ambient temperatures across UV-VIS-NIR-IR wavelengths

• Electron Spin Resonance Spectroscopy– Absorption spectroscopy applied to paramagnetic species which yields information both on their concentration and structure

• Optical Microscopy and Scanning Electron Microscopy– down to 2 nm

• Raman Microscopy– Fast and localised chemical analyses of samples with chemical concentrations less than one monolayer to identify substances or defect regions

• X-ray Photoelectron Spectroscopy & Atomic Force Microscopy– XPS provides information on the top 5 nm of a sample surface; AFM produces atomic-scale 3D images of surfaces down to 0.1 nm

• Contact Angle System– Measurement of various substrates and surface free energy of liquids

• Thermal Analysis– Thermo-Gravimetric Analysis, Coupled TGA Analysis with MS/ FTIR analysis of evolved gases, Differential Scanning Calorimeter; is; Dynamic Mechanical Analysis , Dilatometer, Laser Flash Analyser and Hot Disc for thermal conductivity, diffusivity and specific heat capacity testing, Dynamic Dielectric Spectroscopy

• Broadband Dielectric Spectroscopy– Characterising material electrical properties.3D X-ray tomography– building 3D models of components and materials from radiographic scanning techniques

• Component electrical characterisation– using a large and comprehensive range of test equipment from DC to RF including RF accelerated test system, automated wafer test system and automated electrical parameter measurement system.

• Space radiation simulation– using a Cobalt60 source and various other sources including Californium252

• Focussed Ion Beam milling– Enabling sections to be performed into semiconductor surfaces with nm resolution.

• Confocal Microscopy- The 3D Confocal Microscope (compared to the traditionally used 2D equipment) allows the instrument to be used in a much more efficient and precise way for performing surface coating analysis and surface topography.Scanning Electron Microscopy– Revealing fine surface detail and coupled with Energy Dispersive Spectroscopy of X-rays (EDX) and Wavelength Dispersive X-ray Spectroscopy (WDX) to map and quantify elemental distribution.

• Laser decapsulation– For the clean and precise opening of plastic encapsulated electronic packages.

• Other equipment employed in electrical component reliability analysis – Bond pulltester, die shear, Particle Impact Noise Detection (PIND), shock, vibration, constantacceleration, gross and fine leak tester, test chambers for temperature cycling,humidity, endurance testing.

The Labs have more than 25 full-time staff with more than 300 years of experience, plus research fellows, young graduate trainees and stagiaires.

The Labs’ expertise is made available to all ESA missions and the wider European space community.

In preparation for ESA’s Cosmic Visions missions, the Labs performed preparatory testing to decide on the types of

materials most suited to extreme environments ranging from Mercury to Jupiter.

The Lab’s research findings have also led to an authoritative database of materials, hardware and processes qualified for space applications, as well as guiding the establishment of industrial

production standards.