Harvard scientists created the world's smallest radio receiver. This small radio device has components built on the atomic scale that use tiny atomic-scale defects in pink diamonds. Researchers at the John Paulson School of Engineering and Applied Science at Harvard University placed the radio receiver assembly in two atomic-scale components that could withstand extreme conditions. This component is also biocompatible, meaning that it can be placed in the body. This diamond defect is called the nitrogen vacancy (NV) center.
The team created the NV center by replacing one of the carbon atoms in the diamond crystal with nitrogen atoms and then removing the adjacent nitrogen atoms. This creates a system that is a nitrogen atom with a hole next to it. These NV centers can emit a single photoelectron or detect a weak magnetic field. The NV center also has photoluminescent properties.
The last point means that the NV center can convert information into light, making it a large and potential system for quantum computing, photonics, and sensing. Building a radio receiver requires five components, including power supplies, receivers, transducers, speakers, and tuners. Scientists use green lasers to energize the NV center.
When powered, electrons are sensitive to electromagnetic fields including FM waves. When this audio signal is received, it is emitted as red light, which can be interpreted by the photodiode and converted into a current. This current is then converted into sound through speakers or headphones. An electromagnet can then be used to tune the radio station, producing a great radio receiver that can operate at about 660°F.
Diamond Wire For Magnetic Material Cutting
When the electroplated Diamond Wire is cut, the workpiece is scratched by the diamond abrasive particles on the circumferential surface. Electroplated diamond wire cutting is widely used in the field of hard and brittle material processing due to its high cutting efficiency and little damage to raw materials. Compared with other hard and brittle materials, magnetic materials such as neodymium, iron and boron have similarities and differences. Magnetic materials such as neodymium, iron and boron are mostly made by powder metallurgy process, and there are large lattices and voids inside the materials. It has a certain influence on the electroplated diamond cutting wire.
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