Radio is made from atomic-scale defects in diamond
Researchers from the Harvard John A. Paulson School of Engineering and Applied Sciences (SEAS) have made the world’s smallest radio receiver – built out of an assembly of atomic-scale defects in pink diamonds.
This tiny radio — whose building blocks are the size of two atoms — can withstand extremely harsh environments and is biocompatible, meaning it could work anywhere from a probe on Venus to a pacemaker in a human heart.
The radio uses tiny imperfections in diamonds called nitrogen-vacancy (NV) centers. To make NV centers, researchers replace one carbon atom in a tiny diamond crystal with a nitrogen atom and remove a neighboring atom — creating a system that is essentially a nitrogen atom with a hole next to it. NV centers can be used to emit single photons or detect very weak magnetic fields. They have photoluminescent properties, meaning they can convert information into light, making them powerful and promising systems for quantum computing, phontonics and sensing.
Radios have five basic components — a power source, a receiver, a transducer to convert the high-frequency electromagnetic signal in the air to a low-frequency current, speaker or headphones to convert the current to sound and a tuner.
In the Harvard device, electrons in diamond NV centers are powered, or pumped, by green light emitted from a laser. These electrons are sensitive to electromagnetic fields, including the waves used in FM radio. When NV center receives radio waves it converts them and emits the audio signal as red light. A common photodiode converts that light into a current, which is then converted to sound through a simple speaker or headphone.
An electromagnet creates a strong magnetic field around the diamond, which can be used to change the radio station, tuning the receiving frequency of the NV centers.
Shao and Loncar used billions of NV centers in order to boost the signal, but the radio works with a single NV center, emitting one photon at a time, rather than a stream of light.
The radio is extremely resilient, thanks to the inherent strength of diamond. The team successfully played music at 350 degrees Celsius — about 660 Fahrenheit.
“Diamonds have these unique properties,” said Loncar. “This radio would be able to operate in space, in harsh environments and even the human body, as diamonds are biocompatible.”
[osd_subscribe categories=’nanoelectronics’ placeholder=’Email Address’ button_text=’Subscribe Now for any new posts on the topic “NANOELECTRONICS”‘]
Receive an email update when we add a new NANOELECTRONICS article.
The Latest on: Nanoelectronics
via Google News
The Latest on: Nanoelectronics
- Russian Scientists Synthesize a New Ultra-Hard Materialon May 13, 2022 at 3:04 am
Russian scientists have synthesized a new ultra-hard material containing scandium and carbon. It consists of polymerized fullerene molecules with scandium and carbon atoms inside. The work paves the ...
- Electronic Skin Develops a Human Touchon May 12, 2022 at 9:54 am
The electronic skin created by researchers in Germany is the first to anticipate and perceive touch from all directions. The breakthrough has tremendous potential in robotics and regenerative medicine ...
- What is Ferroelectricity and How Does it Apply Nanotechnology?on May 10, 2022 at 1:09 pm
In this article, an overview of ferroelectricity and its current development in the realm of ferroelectric-based nanoelectronics is given. Opposite charges are attracted to one another and desire to ...
- ITMO: ITMO Researchers Explore Direct Laser Writing of Nanolatticeson May 6, 2022 at 11:13 pm
Researchers from ITMO’s Faculty of Nanoelectronics together with their colleagues from the Lebedev Physical Institute, D. Mendeleev University of Chemical Technology of Russia, and the National Resear ...
- Controlling Graphene’s Properties for Nanoelectronicson May 3, 2022 at 5:00 pm
Now researchers in Denmark have solved one of the biggest challenges in the way of developing useful and effective graphene-based nanoelectronics, paving the way for future design of these devices, ...
- Graphene Nanoelectronics (3 of 3) (IMAGE)on May 3, 2022 at 11:56 am
A representation of conduction channels on a graphene nanoribbon interfaced with gold contacts. When graphene is synthesized, it generally results in a mix of metallic and semiconductor materials.
- Nanoelectronics Market Analysis by Size, Share, Trends, Growth, Future Scope, Revenue and Forecast to 2029on April 13, 2022 at 7:28 am
Global Nanoelectronics market research report proves to be an inventive and novel solution for the businesses in today’s changing market place with which they can reach to the new horizons of ...
- EECE.5590 Introduction to Nanoelectronics (Formerly 16.459/559)on July 9, 2021 at 6:25 pm
This course introduces the use of nanomaterials for electronic devices such as sensors and transistors. Synthesis methods for nanoparticles, nanotubes, nanowires, and 2-D materials such as graphene ...
- Engineering Science (Nanoelectronics) MSon May 20, 2021 at 3:11 am
This innovative program is designed to provide students with the necessary knowledge and skills to develop application specific data and electronic systems, from basic building blocks implemented in ...
via Bing News