Skip to content
  • Happy Health
  • Happy Mindset
  • Animal Wonders
  • About Us
    • Team
  • Subscribe
Menu
  • Happy Health
  • Happy Mindset
  • Animal Wonders
  • About Us
    • Team
  • Subscribe

Tiny Light-Activated Device Dissolves After Healing the Heart

A team of engineers at Northwestern University has developed the world’s smallest pacemaker—and it’s activated by light. Measuring just 1.8 millimeters wide, the rice-sized device can be injected with a syringe, then safely dissolves once its job is done. Designed especially for newborns and patients needing temporary pacing, it eliminates the risks of traditional devices that require wires and surgical removal.

What makes this pacemaker groundbreaking isn’t just its size. It’s powered by a battery formed from the body’s own fluids and activated by a soft, wearable patch that shines light through the chest to trigger gentle pulses. Once the patient’s heart stabilizes, the pacemaker naturally breaks down, leaving no trace behind. Researchers believe this innovation could one day lead to a new era of smart, dissolvable medical devices with applications beyond the heart.

PrevPreviousA Cleaner Coastline: Surprising Progress in Australia’s Plastic Fight
NextMacKenzie Scott Has Quietly Given Away $19 Billion, And She’s Not Done YetNext

Recent Articles

Happy News

Why Every Culture In The World Makes This Same Dish

March 10, 2026

No matter where you grew up, there is a good chance your family had a special bowl of something warm waiting for you on your worst days. Across every continent and culture, people have been simmering broths and stocks for thousands of years, and scientists and historians are still uncovering

Read More
Happy News

Turns Out We Were Wrong About When Humans Invented Writing

March 10, 2026

For more than a century, historians have agreed that human beings first began writing things down around 5,000 years ago in ancient Mesopotamia, in what is now modern-day Iraq. But a remarkable new study is turning that timeline completely on its head, and the discovery has left archaeologists genuinely stunned.

Read More
Happy News

Blind Patients Are Reading Again Thanks To This Tech

March 10, 2026

For people who have lost their central vision to eye disease, the inability to read is often one of the most devastating parts of the experience, taking away everything from books and labels to phone numbers and handwritten notes in an instant. But a tiny wireless chip smaller than a

Read More
« Previous Next »
  • Privacy Notice
  • Accessibility Notice
  • Do Not Sell or Share My Personal Information
  • Unsubscribe
  • Terms and Conditions
  • Privacy Policy
  • Privacy Notice
  • Accessibility Notice
  • Do Not Sell or Share My Personal Information
  • Unsubscribe
  • Terms and Conditions
  • Privacy Policy
Copyright © 2026 HappyNews.