In a recent discovery, researchers in Shanghai learned that a human hand can act as a powerless infrared radiation (IR) source.
Just recently, a group of researchers from Shanghai Jiao Tong University discovered that using the human hand as a powerless infrared radiation source is feasible in various types of applications.
In their published paper in Proceedings of the National Academy of Sciences, the researchers mentioned that the study established that capturing the radiation that the human hand naturally emitted was possible; moreover, the collected energy could be used.
Electromagnetic radiation is a form of energy classified as both waves and particle quantum that surrounds us, and it takes on many forms, including infrared. As electromagnetic radiation, the infrared region has wavelengths longer than the region of visible light; hence why the energy is not visible to the human eye even though our bodies constantly emit IR due to the heat we produce.
In recent times, electromagnetic radiation is utilized in many applications, including in microwave ovens, medical imaging machines, radio broadcasting, and more. In particular, technologies have taken advantage of using apparatuses to detect infrared light, including night vision goggles, medical devices to treat burn patients, and spectroscopy.
Human Bodies and Infrared Radiation
The human body, including the hands, emits electromagnetic radiation within the infrared region. Thus, the body is basically a source of radiation. Moreover, the researchers discovered that the energy could be captured and utilized in encryption systems, signal generation, and more.
The researchers also noted that due to the hands having multiple fingers, the emitted infrared radiation could be multiplexed.
The research began with creating an instrument that could separate the infrared radiation emitted by a human hand from the IR in the surroundings. Then, they got an aluminum base and sprayed it with a low-reflective material. The researchers discovered that when together, the two devices could be utilized in encrypting messages at ambient temperatures.
Further, they observed that when the human hand was utilized as a light source for the instrument, the infrared radiation emissions were reflected by all regions, including those with high infrared radiation. Moreover, the higher rise in IR enabled the device to differentiate infrared radiance, allowing a decryption process to have a means for building.
The researchers demonstrate that their device validates that infrared radiation generated from a human hand can suffice in building infrared radiation-based devices. Moreover, they stated that using fingers as encryption keys could be possible by modifying their device.
Research is an important skill that has allowed us to progress as humans. Owing to this skill, we have gained more knowledge about our world, and with research came the advancements in technology that have undeniably made human life more convenient.