Microwaved Grapes Spark Advances in Quantum Sensing Technology
TEHRAN (Tasnim) – Halved grapes, known for producing plasma in microwaves, are being explored as potential microwave resonators to enhance quantum sensing, according to a recent study published in Physical Review Applied.
A popular internet experiment involving microwaved halved grapes has taken a scientific turn. Researchers have discovered that this phenomenon, which generates sparks and plasma, could pave the way for innovative quantum sensing technologies.
The study, led by Ali Fawaz, a graduate student at Macquarie University, highlights the unique properties of grapes in concentrating microwave energy. “We showed that grape pairs can also enhance magnetic fields which are crucial for quantum sensing applications,” said Fawaz. These applications span fields like satellite technology, masers, microwave photon detection, and quantum computing.
Using nanodiamonds embedded with defect centers that act as tiny magnets, the researchers demonstrated how placing these diamonds between two grapes amplified magnetic fields. The experiment involved shining green laser light through a glass fiber holding the nanodiamond, which emitted red fluorescence proportional to the magnetic field strength. The results revealed that grapes doubled the magnetic field strength compared to setups without them.
The size and shape of the grapes were critical; they needed to be around 27 millimeters long to achieve optimal microwave energy concentration. However, the researchers noted challenges in stability and energy efficiency, suggesting that future studies might uncover more reliable materials with similar properties.
This breakthrough builds on previous research from 2019, which clarified the role of electromagnetic “hot spots” in plasma generation. The effect isn't limited to grapes—it has also been observed in gooseberries, large blackberries, quail eggs, and water-soaked hydrogel beads. The study’s findings reinforce the potential of unconventional materials in advancing quantum technology.
The findings, published in Physical Review Applied, underscore the surprising utility of everyday objects in cutting-edge scientific applications.
