Mishkat Bhattacharya

The search for the room-temperature superconductor continues. Charles O'Rear/Corbis Documentary via Getty Images

Scientists have been researching superconductors for over a century, but they have yet to find one that works at room temperature − 3 essential reads

Claims about the discovery of a coveted room-temperature superconductor peppered the news in 2023. We pulled three stories from our archives on what superconductivity is and why scientists study it.
Magnetic levitation is just one of the interesting attributes that make superconductors so interesting. Mark Garlick/Science Photo Library vie Getty Images

How do superconductors work? A physicist explains what it means to have resistance‑free electricity

Superconductors are materials that can transmit electricity without any resistance. Researchers are getting closer to creating superconducting materials that can function in everyday life.
The crests (bright) and troughs (dark) of waves spread out after they were produced. The picture applies to both light and sound waves. Titima Ongkantong

A new type of laser uses sound waves to help to detect weak forces

Most people are familiar with lasers. But what about a laser made with sound rather than light? A couple of physicists have now created one that they plan to use for measuring imperceivable forces.
A silica sphere with a radius of 50 nanometers is trapped levitating in a beam of light. J. Adam Fenster, University of Rochester

Experiments with optical tweezers race to test the laws of quantum mechanics

The discovery and development of optical tweezers won the 2018 Nobel Prize in physics. Now physicists are using this tool to crack some of the fundamental questions behind how the universe works.

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