Skip to main content

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

3 comments

Scientists Create Smart Electronic Skin That Monitors Your Health 24/7

In recent years, wearable healthcare technology has changed the way people monitor their health. From smartwatches to fitness bands, modern devices can track heart rate, sleep, oxygen level, and daily activity. However, scientists are now developing something even more advanced — electronic sensors that behave like human skin itself.

A research team led by Chen has introduced a new type of flexible and biocompatible temperature sensor that can stick to the skin comfortably for long periods without causing irritation. These ultra-thin wearable devices are soft, breathable, waterproof, and highly accurate. The innovation may transform healthcare monitoring, artificial skin technology, and even robotics in the future.

The Rise of Wearable Electronics

The idea of invisible computing was first imagined by computer scientist Mark Weiser, often called the father of ubiquitous computing. He believed that future technology would become so natural and seamless that people would use it without even noticing its presence.

Today, wearable electronics are moving toward that vision. Flexible sensors that can bend, stretch, and attach to the body are becoming essential tools in modern healthcare. These devices are often called epidermal electronics because they work like an artificial electronic layer placed directly on human skin.

Since their introduction in 2011, epidermal electronics have shown great promise in many medical applications. They can measure body temperature, monitor hydration, record muscle activity, track heart signals, and even power wearable devices through body movement. Their lightweight and stretchable structure allows them to move naturally with the human body.

Why Body Temperature Monitoring Matters

Body temperature is one of the most important indicators of human health. Even small changes in temperature can signal illness, infection, stress, hormonal changes, or recovery from surgery.

Traditional temperature measurement methods, such as mercury thermometers, are still commonly used in hospitals and homes. However, these devices are often uncomfortable and inconvenient, especially for babies, elderly patients, or individuals who require continuous monitoring.

For example, infants cannot easily hold a thermometer under their arm for several minutes. Patients under anesthesia or those recovering from illness may also need constant temperature observation. In such cases, a wearable temperature sensor attached directly to the skin becomes extremely useful.

Continuous temperature monitoring can also help in:

  • Predicting ovulation cycles in women

  • Monitoring emotional or stress-related body changes

  • Tracking recovery after surgery

  • Detecting early signs of disease

  • Supporting chronobiology and sleep research

These benefits are driving scientists to create smarter and more comfortable wearable devices.

Problems with Existing Flexible Sensors

Although many flexible temperature sensors already exist, most still face major challenges.

Some sensors rely on plastic or silicone substrates that block air from reaching the skin. When worn for long periods, they may trap sweat and moisture, leading to skin irritation, allergies, or infections.

Other devices are not waterproof. Sweat, rain, or shower water can damage them easily. This creates a serious problem for long-term healthcare monitoring because people need sensors that can survive daily activities.

In addition, many older flexible sensors are bendable but not truly stretchable or skin-friendly. Human skin constantly stretches and moves, so wearable electronics must adapt naturally to body motion.

Chen Team’s Skin-Inspired Innovation

To solve these problems, Chen and the research team designed a biocompatible flexible temperature sensor inspired by the natural properties of human skin.

The researchers used a semipermeable polyurethane film with tiny porous structures as the base material. This special film allows air and water vapor to pass through while preventing liquid water from entering. In simple words, the sensor can “breathe” like skin while still remaining waterproof.

The device is:

  • Ultra-thin

  • Soft and stretchable

  • Breathable

  • Waterproof

  • Comfortable for long-term use

The sensor was fabricated using a technique called transfer printing in solution, which helps create extremely delicate and flexible electronic structures.

Accurate and Reliable Temperature Measurement

The researchers tested the device on human volunteers by placing the sensors on the underarm and forearm.

The underarm sensor measured axillary temperature, which is commonly used in medical examinations. The forearm sensor monitored body surface temperature and environmental temperature changes.

The results were impressive.

The wearable sensor showed accuracy comparable to a traditional mercury thermometer. It successfully detected even tiny temperature changes caused by airflow from breathing or water droplets touching the skin.

This high sensitivity proves that the device can respond quickly to environmental and physiological changes.

The sensor’s temperature resistance coefficient was carefully calibrated in a water bath, ensuring reliable temperature readings during practical use.

Comfortable Enough for 24-Hour Use

One of the most important achievements of this research was the long-term skin compatibility test.

Volunteers wore the sensors continuously for 24 hours, including during two separate showers. Even after prolonged use, the skin showed no signs of irritation, maceration, or discomfort.

This happened because the porous semipermeable substrate allowed proper airflow and sweat evaporation, reducing moisture buildup beneath the device.

The sensor became almost mechanically invisible to the wearer. It moved naturally with the skin without causing pressure or discomfort.

This feature is extremely important because wearable healthcare devices must be comfortable enough for daily life. A device that irritates the skin cannot be used continuously in real-world healthcare settings.

Beyond Healthcare: Artificial Skin and Robotics

The potential applications of this technology go far beyond medical monitoring.

Because the sensor can detect tiny temperature changes and environmental interactions, it could become an important component in artificial skin systems for robots and prosthetic limbs.

Future robots equipped with such electronic skin may be able to sense heat, airflow, and touch similarly to humans. Prosthetic arms and legs could also provide sensory feedback to users through advanced skin-like sensors.

This technology may help create smarter healthcare systems, intelligent robotics, and more responsive prosthetic devices.

A Step Toward Smarter Healthcare

The development of breathable and waterproof skin-like electronics represents a major advancement in wearable medical technology.

Unlike earlier devices, Chen team’s sensor combines flexibility, stretchability, biocompatibility, and high measurement accuracy in a single platform. Its ability to work continuously for 24 hours without harming the skin demonstrates its practical value for future healthcare systems.

The research also provides a new design strategy for other wearable devices that require long-term contact with the human body.

In the future, similar technologies may be used for monitoring blood pressure, hydration, glucose levels, muscle movement, and many other health indicators.

Conclusion

Flexible electronic skin sensors are bringing healthcare closer to the human body than ever before. Chen and the research team have shown that wearable devices can become soft, breathable, waterproof, and comfortable enough for continuous daily use.

Their innovative biocompatible temperature sensor not only measures body temperature with excellent accuracy but also behaves like real skin by allowing airflow and resisting water damage.

As wearable electronics continue to evolve, such technologies could revolutionize patient monitoring, smart healthcare, artificial skin, and robotics. The dream of invisible and natural computing imagined decades ago is now becoming reality — one smart skin sensor at a time.

Reference: Chen, Y., Lu, B., Chen, Y. et al. Breathable and Stretchable Temperature Sensors Inspired by Skin. Sci Rep 5, 11505 (2015). https://doi.org/10.1038/srep11505

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