Skip to main content

Scientists Discover Way to Send Information into Black Holes Without Using Energy

3 comments

MIT Create a Material That Can Instantly Change Its Electrical Conductivity With Light

Imagine a material as soft as human skin but smart enough to change how it behaves instantly when light shines on it. This is no longer science fiction. Scientists at Massachusetts Institute of Technology (MIT) have developed a groundbreaking soft gel that can dramatically change its electrical properties using light. This innovation could transform how humans interact with machines and open doors to futuristic technologies like soft robots and intelligent wearable devices.

Soft vs Hard: Bridging Two Different Worlds

One of the biggest differences between living systems and traditional electronics is their physical nature. Living tissues—like skin, muscles, and organs—are soft, flexible, and dynamic. On the other hand, electronic devices are typically hard, rigid, and inflexible.

This mismatch creates a major challenge when trying to connect machines with the human body. For example, wearable health devices or implants must interact smoothly with soft biological tissues. That’s where a new and exciting field called Ionotronics comes into play.

What Is Ionotronics?

Ionotronics is a field that uses ions—charged particles like sodium and potassium—to transmit signals. Interestingly, this is exactly how our bodies naturally communicate. Nerve signals, brain activity, and muscle movements all rely on ions moving through cells.

Traditional electronics, however, use electrons to carry signals. While this works well for machines, it doesn’t perfectly match the way biological systems function. Ionotronics aims to bridge this gap, allowing smoother interaction between electronics and living tissues.

A Material That Responds to Light

The MIT researchers have taken ionotronics a step further by creating a soft material that reacts to light. This material is a flexible gel made from polyurethane rubber, infused with special compounds called Photo-ion generators.

When exposed to light, these compounds release ions, which increases the material’s ability to conduct electricity. In simple terms, the gel can switch from being an insulator (blocking electricity) to a conductor (allowing electricity to pass) just by shining light on it.

What makes this discovery remarkable is the scale of change. The conductivity of the material can increase by up to 400 times when activated by light. That’s a huge shift for such a soft and flexible material.

How It Works

The process begins by dissolving a photo-ion generator into a solvent. This mixture is then absorbed into a soft rubber material through a swelling process. The result is a uniform, flexible gel that contains light-sensitive components.

When light hits the material:

  • The photo-ion generators activate

  • They release ions into the gel

  • The number of charge carriers increases

  • The material becomes much more conductive

This ability to control ion movement dynamically is a major breakthrough. According to lead researcher Thomas J. Wallin, this system can “self-adapt” to environmental changes—in this case, light.

Why This Matters

This innovation could lead to a new generation of smart materials that behave more like living systems. Instead of being static, these materials can respond, adapt, and process signals in real time.

Here are some key areas where this technology could have a major impact:

1. Soft Wearable Technology

Imagine wearable devices that feel like a second skin and adjust their behavior based on light or environment. These could monitor health, track movement, or even assist in medical treatments.

2. Human-Machine Interfaces

Future interfaces could become more natural and seamless. Instead of rigid sensors, soft materials could directly interact with human tissues, improving comfort and performance.

3. Soft Robotics

Soft robots made from flexible materials could move more like living organisms. With light-controlled conductivity, these robots could respond instantly to their surroundings without complex wiring.

4. Biomedicine

Medical devices could become safer and more compatible with the human body. For example, implants or prosthetics could better communicate with nerves and tissues.

A Step Toward Intelligent Materials

Currently, the change in conductivity in this material is irreversible—it only switches in one direction. However, researchers are optimistic that future versions will be able to switch back and forth, making them even more versatile.

The possibilities don’t stop at light. According to lead author Xu Liu, future materials could respond to other environmental factors such as:

  • Heat

  • Magnetic fields

  • Mechanical pressure

This means we could eventually create materials that react to multiple stimuli, making them even smarter and more adaptive.

The Birth of a New Field

This research has introduced the concept of soft photo-ionotronics—a new subfield that combines soft materials, ion-based communication, and light-responsive behavior.

Unlike traditional electronics, which rely on rigid circuits, these systems could process information in a more organic way, similar to how living organisms function. This could lead to entirely new types of machines that are flexible, adaptive, and energy-efficient.

Challenges and Future Potential

While the discovery is promising, there are still challenges to overcome:

  • Making the conductivity change reversible

  • Improving durability for real-world applications

  • Scaling production for commercial use

However, the flexibility of the system offers a huge advantage. The current material uses just one type of polymer, one solvent, and one photo-ion generator. But there are countless combinations possible, meaning researchers can continue improving and customizing these materials.

Conclusion

The development of a light-responsive soft gel marks a significant step forward in merging the worlds of biology and electronics. By using ions—the same language as our bodies—this technology brings us closer to seamless human-machine integration.

From smart wearables to soft robots and advanced medical devices, the possibilities are vast. As research continues, we may soon see materials that not only respond to light but think, adapt, and interact like living systems.

In a world where technology is becoming more personal and integrated into our daily lives, innovations like this could redefine what it means to connect humans and machines.

Reference: Liu, X., Adelmund, S.M., Safaee, S. et al. Soft photo-ionotronics. Nat Commun (2026). https://doi.org/10.1038/s41467-026-69427-8

Comments

Post a Comment

Popular

Scientists Discover Way to Send Information into Black Holes Without Using Energy

For years, scientists believed that adding even one qubit (a unit of quantum information) to a black hole needed energy. This was based on the idea that a black hole’s entropy must increase with more information, which means it must gain energy. But a new study by Jonah Kudler-Flam and Geoff Penington changes that thinking. They found that quantum information can be teleported into a black hole without adding energy or increasing entropy . This works through a process called black hole decoherence , where “soft” radiation — very low-energy signals — carry information into the black hole. In their method, the qubit enters the black hole while a new pair of entangled particles (like Hawking radiation) is created. This keeps the total information balanced, so there's no violation of the laws of physics. The energy cost only shows up when information is erased from the outside — these are called zerobits . According to Landauer’s principle, erasing information always needs energy. But ...
3 comments
Read more

Black Holes That Never Dies

Black holes are powerful objects in space with gravity so strong that nothing can escape them. In the 1970s, Stephen Hawking showed that black holes can slowly lose energy by giving off tiny particles. This process is called Hawking radiation . Over time, the black hole gets smaller and hotter, and in the end, it disappears completely. But new research by Menezes and his team shows something different. Using a theory called Loop Quantum Gravity (LQG) , they studied black holes with quantum corrections. In their model, the black hole does not vanish completely. Instead, it stops shrinking when it reaches a very small size. This leftover is called a black hole remnant . They also studied something called grey-body factors , which affect how much energy escapes from a black hole. Their findings show that the black hole cools down and stops losing mass once it reaches a minimum mass . This new model removes the idea of a “singularity” at the center of the black hole and gives us a better ...
Post a Comment
Read more

How Planetary Movements Might Explain Sunspot Cycles and Solar Phenomena

Sunspots, dark patches on the Sun's surface, follow a cycle of increasing and decreasing activity every 11 years. For years, scientists have relied on the dynamo model to explain this cycle. According to this model, the Sun's magnetic field is generated by the movement of plasma and the Sun's rotation. However, this model does not fully explain why the sunspot cycle is sometimes unpredictable. Lauri Jetsu, a researcher, has proposed a new approach. Jetsu’s analysis, using a method called the Discrete Chi-square Method (DCM), suggests that planetary movements, especially those of Earth, Jupiter, and Mercury, play a key role in driving the sunspot cycle. His theory focuses on Flux Transfer Events (FTEs), where the magnetic fields of these planets interact with the Sun’s magnetic field. These interactions could create the sunspots and explain other solar phenomena like the Sun’s magnetic polarity reversing every 11 years. The Sun, our closest star, has been a subject of scient...
Post a Comment
Read more