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Symposium Highlights for the Scientific Press

The following presentations have been selected by symposium organizers as being especially press-worthy. The symposium highlights will be updated throughout the week.

Note to Symposium Organizers: If you have newsworthy sessions of interest for the press, please take a few minutes to complete the online form.

Contact Jenny MacBeth, Marketing Communications Coordinator, with questions.

Symposium EL15: Radiation—Hard and Lightweight Next-Generation Semiconductor Electronics

EL15.01.03 Radiation Effects in Quantum Well Multi-Junction Solar Cell
This talk will present the latest results on a pioneering research direction where quantum confined nanostructures are used to improve radiation resilience of III-V solar cells for space applications.

 

EL15.02.04 Low-Cost and Lightweight Oxide Barriers for Space and Terrestrial Perovskite Solar Cells
A unique ultrathin barrier layer technology will be presented that concomitantly hardens perovskite solar cells for terrestrial and space applications.

 

A comprehensive assessment of perovskite solar cells will be presented as the next-generation space photovoltaic technology with remarkable benefits over conventional space solar cells.

 

The remarkable radiation resilience of perovskite solar cells will be presented. It will be shown that this technology significantly outperforms conventional photovoltaic technologies in harsh space radiation environments.

 

This talk will present a novel solution-processed radiation sensing technology for biomedical applications.

 

An exciting, next-generation materials platform for radiation-hard semiconductor technologies based on ultrawide bandgap semiconductors will be presented.

 

Symposium SF01: High Entropy Materials Ⅲ - From Fundamentals to Potential Applications

The speaker is well known for inventing the field of multicomponent high entropy alloys and discovering the so-called "Cantor alloys". This talk will cover multicomponent high entropy alloys, including the fundamental structure of multicomponent phase space, thermodynamics, structure, and properties of multicomponent solid solutions and multicomponent dilute alloys.

 

Overcoming the strength-ductility trade-off of pure metals and alloys has always been a long-standing challenge pursued by materials scientists. In this talk, the speaker will describe a novel way to overcome the strength-ductility trade-off by designing unique microstructures to trigger one or more strengthening mechanisms. This work provides a promising approach for regulating microstructures, especially defects, and enhancing the mechanical properties of multicomponent alloys.

 

The speaker will describe a novel prospect controlling phase stability. If the size and volume fraction of precipitates is controlled well, precipitates can suppress the formation of thermal martensite during processing and heat treatment but allow martensite to form during subsequent deformation. The results show that not only is it possible to activate multiple deformation mechanisms in HEAs/MEAs but that by carefully controlling the precipitate characteristics and matrix composition, it is possible to call upon specific deformation mechanisms precisely when needed.

 

This talk will describe recent results utilizing energy-filtered diffraction, 4D-STEM, and in situ TEM nanomechanical testing to provide insight into multiscale deformation phenomena in the CrCoNi medium entropy alloy. To understand the effect of SRO on the evolution of plasticity at different deformation stages, 4D-STEM was used during in situ deformation and fracture experiments.

 

This talk will describe the multi-planar and multi-character dislocation slip in ternary multi-principal element alloys (MPEAs), MoNbTi at low homologous temperature was studied with a combination of in situ dislocation observations, microstructural investigations, and atomistic calculations. It is noteworthy that the ability of dislocations to choose the easy gliding direction and plane enables an excellent combination of strength and homogeneous plasticity in this alloy, traits that are not simultaneously observed in conventional metallic alloys.

 

This talk will cover the evolution of Short-Range Ordering (SRO) in the equiatomic Cr-Co-Ni MEA, which is studied by monitoring changes in electrical resistivity and comparing it to changes in X-ray and electron diffraction signals. It is noteworthy that the results also show the effects of SRO on the mechanical properties of single crystals of the equiatomic Cr-Co-Ni MEA in tension and compression at room temperature and liquid nitrogen temperature.

 

Symposium SF02: Materials in Space—Design and Testing

The return to the Moon through the Artemis mission and establishing a lunar base in the coming years will again capture the public’s attention and awe for space exploration. Lunar dust is one of the main threats to mission success for the Artemis mission as it poses a threat to astronauts and equipment. The dust problem becomes even more of an issue as NASA plans for longer stays on the Moon. This talk will discuss the work NASA is conducting to evaluate the risks, simulate the lunar dust, and develop mitigation strategies to address this pressing problem.

 

The commercial space industry has rapidly expanded with new launch capabilities and the development of commercial space stations just years away. The launch of the first 3D printed rocket by Relativity Space has captured the public’s attention. However, there are many open questions about how 3D printed parts will survive in the unforgiving environment of space. This talk will cover 3D printing in space to create advanced spacecraft materials and how they fare against the extreme elements of space.

 

Returning to the Moon through the Artemis mission with the intention to establish a lunar base will require new and novel materials up to the task of surviving the lunar regolith and the other extreme elements. Ultralight materials, like aerogels, that provide thermal and vibrational mitigation will be critical. This talk will discuss the opportunities for polymer aerogels for space exploration including for dust and radiation mitigation.

 

Thermal coatings are critical to the operation and survival of spacecraft. Yet, the properties of these coatings change over the lifetime of the material. Testing of such coatings by the French space agency, CNES, in low Earth orbit over many years and missions is presented in this talk. These results will better inform the burgeoning space economy.

 

As more and more spacecraft, specialized satellites, and larger satellite constellations are launched into orbit, reliability of the sensitive onboard electronics to execute the mission is of critical importance. The dangers facing these electrical systems include solar radiation, galactic cosmic radiation from outside our solar system, and the plasma of charged particles caught in the Earth’s radiation belts. This talk discusses the radiation hardening research underway at the Japanese space agency, JAXA, to combat these threats.

 

Satellites in very low Earth orbit (VLEO) offer many advantages due to their relatively low altitudes that are beneficial for Earth observation and potentially 6G internet transmission. Yet, one of the most corrosive species, atomic oxygen, is prevalent at VLEO altitudes and reduces satellite lifetimes through increased drag of the corroded surfaces. This talk introduces novel surface coatings which can mitigate atomic oxygen corrosion and potentially allow satellites to operate in this desirable orbit for prolonged lifetimes.

 

The ultimate testbed for spacecraft materials is the space environment itself. However, the expense and timelines for testing materials and devices in space can be obstacles and often do not allow for rapid iteration and innovation. The ground-based facilities developed by the European Space Agency (ESA) will be discussed to subject spacecraft materials to the gauntlet of hazards that await in the extreme space environment.

Publishing Alliance

MRS publishes with Springer Nature

 

 

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