This image shows the cobalt defect fabricated by the study team. The green and yellow circles are tungsten and sulfur atoms that make up a 2D tungsten disulfide sample. The dark blue circles on the surface are cobalt atoms. The lower-right area highlighted in blue-green is a hole previously occupied by a sulfur atom. The area highlighted in reddish-purple is a defect—a sulfur vacancy filled with a cobalt atom. The scanning tunneling microscope (gray) is using electric current (light blue) to measure the defect’s atomic-scale properties. Two smiling people in blue lab coats and safety glasses. The person on the right has their arm raised in the center of the frame presenting a nickel-sized sample. Two scientists point at a figure on the computer.

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Anothai Thanachareonkit, a person with medium-length dark hair wearing glasses and a blue top. Anastasiia Butko, a person with medium-length brown hair wearing a jean jacket over a white top. Dark-haired person with glasses wearing a pink shirt, pearls, and a black blazer. Light brown nut shells. 2024 Cyclotron Road fellows: (top row) Mert Akin, Rakki Chandran, Rushin Contractor; (second row) Gabriella Dweck, Nosa Edoimioya, Advait Holkar, Nikita Khlystov; (third row) Hitesh Manglani, Pauliina Meskanen, Carla Pinzon; (fourth row) Kelly Redmond, Nicholas Sarai, John Slack, Nate Weger. The SOAR Telescope on Cerro Pachon in Chile.