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Electrolyte gating uses ions to reversibly modify La0.5Sr0.5CoO3−δ, changing oxygen content and electrical, magnetic, and optical properties at 1–2 V. The team achieved ~100-cycle endurance with humidity control and 4 nm films switching in ~0.7 s. Prospects include tunable optics/photonics; future work targets diffusion and surface chemistry; collaborations.

This past summer, about a dozen PREM faculty and students from the University of Central Florida joined MRSEC faculty and students at the University of Washington for their annual retreat at the Pack Forest Conference Center in Washington State. Against the beautiful backdrop of Douglas firs, nearly 85 materials scientists had the opportunity to share research ideas, brainstorm solutions, and collaborate.

Last summer, 12 high school students were challenged to identify a mystery polymer. As part of a summer internship—now in its second year—they visited the chemical giant Chemours where they gained access to high-tech lab equipment rarely open to the public and were provided with relevant clues and tests to help solve the puzzle. It’s as hands on as it gets and gave this young group valuable exposure to the world of STEM.

In collaboration with Amish Patel’s group (IRG-2), researchers in the previous and current Penn MRSEC discovered that disordered packings of hydrophilic nanoparticles infiltrated with hydrophobic polymers—amphiphilic nanoporous films—can spontaneously condense and exude water droplets from undersaturated vapor under isothermal conditions.

In the world of materials science, researchers are constantly seeking new ways to create more efficient, durable, and adaptable materials. One promising avenue is the study of bottlebrush block polymers, a unique class of macromolecules that self-assemble into intricate nanostructures. Researchers at the University of Minnesota have been at the forefront of this research, uncovering new possibilities for these polymers and their applications.

A class of synthetic soft materials called liquid crystal elastomers (LCEs) can change shape in response to heat, similar to how muscles contract and relax in response to signals from the nervous system. 3D printing these materials opens new avenues to applications, ranging from soft robots and prosthetics to compression textiles.

Nickel-based spinel oxides show exceptional self-lubrication at extreme temperatures, unlocking potential for aerospace and energy applications.

Northwestern University engineers have developed a new nanoelectronic device that can perform accurate machine-learning classification tasks in the most energy-efficient manner yet. Using 100-fold less energy than current technologies, the device can crunch large amounts of data and perform artificial intelligence (AI) tasks in real time without beaming data to the cloud for analysis.

The reason microplastics are all around and even in us is because petroleum-based plastics last for hundreds of years. In our lifetimes they simply don’t go away. But degradable plastics, made from plants, do. Research at UCSD has now proven that those earth-friendly plastics disappear in a matter of a few months. Researchers ground up plant-based plastics into very small bits and tested them in several natural environments.

Helium may be the second-most abundant element in the universe, but on Earth it’s a finite, nonrenewable resource. Helium is so light that it’s not trapped by the lower levels of Earth’s atmosphere. And it’s extremely challenging to capture, since it’s relatively unreactive. Liquid helium is a critical ingredient in systems for cooling equipment used to study quantum systems and image atoms, as well as in the high-performance magnets used in MRI scanners and particle accelerators. But if it is not carefully contained, helium flies to the farthest reaches of the atmosphere or even out into space when it boils.