An international research team has achieved a breakthrough in the field of thermal energy management. This new material is capable of more than just conducting or insulating heat; it can "remember" settings, redirect thermal radiation, and operate without continuous power consumption.
A Revolution in Heat Management
Until now, controlling thermal radiation was governed by the principle of reciprocity, where a material absorbed and emitted heat in identical ways. This fundamental limitation has long hindered the development of truly "smart" thermoregulation systems.
Professor Koichi Okamoto and Dr. Shunsuke Murai from the Osaka Metropolitan University Graduate School of Engineering have found a solution. They developed a device that combines two distinct types of materials:
1. Magneto-optical material — changes its properties when exposed to a magnetic field
2. GST phase-change material (germanium-antimony-tellurium) — capable of switching between different states
Together, these components create a system that can direct thermal radiation as desired, toggle this mode on or off, and, most importantly, retain its settings even after the power is disconnected.
"Making Heat Behave Smarter"
"We have forced thermal radiation to behave in a 'smarter' manner. Achieving these capabilities in a working model paves the way for a new generation of efficient infrared emitters, thermal energy devices, sensors, and photonic memory technologies," explains Dr. Murai.
Professor Okamoto adds:
"Our ultimate goal is to develop compact devices that can actively control thermal radiation in the same way that electronic circuits control the flow of electricity."
Where Will This Be Applied?
The technology opens up promising prospects in several key areas:
🔹 Smart infrared sensors — more precise and energy-efficient detectors for medicine, security, and industrial applications
🔹 Next-generation energy systems — devices capable of redistributing heat with minimal loss
🔹 Photonic memory — storing information using light and heat instead of electrical charges, which promises greater speed and reliability
🔹 Building thermoregulation — "smart" materials for walls and windows that adapt to temperature changes automatically
Why Is This Important?
Today, electronics are approaching the physical limits of miniaturization. Scientists are searching for alternative methods for processing and storing information. Utilizing heat and light instead of electricity could become one such solution.
Furthermore, efficient thermal energy management is critical for the fight against climate change. Devices that waste less energy and utilize heat more effectively will help reduce global resource consumption.
The study was published in 2026 and has already attracted significant attention from specialists in materials science, energy, and photonics.
Source: Osaka Metropolitan University, ScienceDaily, July 2026
