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

Happy Earth Day! This Year, There’s More Reasons To Be Hopeful

April 22, 2026

Today is Earth Day 2026, and while the headlines about our planet can feel overwhelming, there is genuine, data-backed reason to celebrate. The theme this year is “Our Power, Our Planet”, a rallying cry for the global clean energy movement, and the numbers show that movement is winning. According to

Read More
Happy News

The Artemis II Crew Just Told The World What It Was Really Like To Come Home From The Moon

April 22, 2026

The four Artemis II astronauts held their first press conference since returning from the Moon this week, and the mood at NASA’s Johnson Space Center in Houston was one of genuine pride and relief, with the crew offering glowing reviews of their spacecraft and setting the stage for what comes

Read More
Happy News

A Fuel Cell Powered By Dirt That Could Replace Batteries In Farms Forever

April 22, 2026

Scientists at Northwestern University have developed a fuel cell the size of a paperback book that runs entirely on the microbes living naturally in soil, potentially eliminating the need for batteries in the vast networks of underground sensors used to monitor farmland and natural environments around the world. The device

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.