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Label-Free Characterization of Organic Nanocarriers

A technique developed at the ALS enables accurate characterization of organic nanocarriers (molecules that encapsulate other molecules) without the need for disruptive labeling. The method will enable faster, more precise development of exciting new technologies, ranging from targeted drug delivery to oil-spill remediation. Read more »PPT-icon-35 PDF-icon-35

Scientists Uncover a Different Facet of Fuel-Cell Chemistry

Solid oxide fuel cells are a promising technology for cleanly converting chemical energy to electrical energy. To improve the efficiency of these devices, researchers studied a model electrode material in a new way—by exposing a different facet of its crystal structure to oxygen gas at operating pressures and temperatures. Read more »

Artificial Spin Ice Toggles Twist in X-Ray Beams on Demand

ALS studies helped scientists understand how a nanoscale magnetic lattice (an artificial spin ice) acts as a toggle switch for x-ray beams with spiral character. The findings represent an important step toward the development of a versatile new tool for probing or controlling exotic phenomena in electronic and magnetic systems. Read more »PPT-icon-35 PDF-icon-35

Programmable Micromagnets for Single-Cell Sorting

Researchers demonstrated that electrically induced mechanical strain can control the magnetic state of tiny magnets used to sort biological cells. The work lays the foundation for a programmable, single-cell sorting platform to support a wide variety of biotechnology applications, including personalized cancer treatments. Read more »PPT-icon-35 PDF-icon-35

Graphene Outperforms Metal Junctions for 2D Semiconductors

Researchers found that graphene performs ten times better than metal in transmitting a photoinduced current across interfaces with 2D semiconductors. Nanoscale-resolution band-structure measurements provided a deeper understanding of charge transport in these systems and will help in engineering more efficient contacts. Read more »

To Design Truly Compostable Plastic, Scientists Take Cues From Nature

Researchers have designed an enzyme-activated compostable plastic that could diminish microplastics pollution and holds great promise for plastics upcycling. The material can be broken down to its building blocks—small individual molecules called monomers—and then reformed into a new compostable plastic product. Read more »

The Spintronics Technology Revolution Could Be Just a Hopfion Away

Scientists have long treated skyrmions as merely 2D objects. Recent studies, however, have suggested that 2D skyrmions could actually be the genesis of a 3D spin pattern called hopfions. Now, a team of researchers has reported the first demonstration and observation of 3D hopfions emerging from skyrmions at the nanoscale in a magnetic system. Read more »