The Making of Erika Harrsch’s LED Cello

Programmable panels turn a classical instrument into a video screen

5 min read
The Making of Erika Harrsch’s LED Cello
Photo: Erika Harrsch

img f2By adding panels of light-emitting diodes to a cello, the visual artist Erika Harrsch created a “living sculpture, of music and light."Photo: Erika Harrsch

It's a warm summer evening in New York City, and the visual artist Erika Harrsch is having dinner with Meric Adriansen, an engineer and managing partner of the lighting design company D3 LED. Adriansen's company specializes in sophisticated LED installations for advertising and public art. After dinner, the two stroll through Times Square, where Adriansen points out a few of his company's immense, shimmering creations and describes how the visuals are programmed.

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Wearable Ultrasound Patch Images the Heart in Real-Time

The new device can analyze cardiac health even during exercise

5 min read
a small patch is wrapped around a cylinder in front of a dark background

The wearable cardiac ultrasound imager is flexible, making it ideal for bodies in motion.

David Baillot/UC San Diego Jacobs School of Engineering

A wearable ultrasound imager for the heart that is roughly the size of a postage stamp, can be worn for up to 24 hours, and works even during exercise may one day help doctors spot cardiac problems that current medical technology might miss, a new study finds.

Heart disease is the leading cause of death among the elderly, and is increasingly becoming a problem among those who are younger as well because of unhealthy diets and other factors. The signs of heart disease are often brief and unpredictable, so long-term cardiac imaging may help spot heart anomalies that might otherwise escape detection.

For instance, patients with heart failure may at times seem fine at rest, “as the heart sacrifices its efficiency to maintain the same cardiac output,” says study co-lead author Hongjie Hu, a nanoengineer at the University of California at San Diego. “Pushing the heart towards its limits during exercise can make the lack of efficiency become apparent.”

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This Gift Will Help Your Aspiring Engineer Learn Technology

Know someone that is hard to shop for? We have the perfect gift for you.

4 min read
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