Radio frequency techniques encompass experimental and analytical methods that generate, manipulate, and detect electromagnetic fields in the radio frequency (RF) range, typically from kHz to tens of GHz, for probing, controlling, or characterizing physical, chemical, or biological systems. These techniques include RF spectroscopy, RF reflectometry, impedance and network analysis, RF trapping and manipulation of charged particles or spins, and RF-based imaging or sensing modalities. They rely on precisely engineered transmission lines, resonators, antennas, and matching networks to control field distributions, optimize signal-to-noise ratios, and extract quantitative parameters such as permittivity, conductivity, relaxation times, or device response functions under well-defined RF excitation conditions.
For the first time, a team of US researchers has used sensors containing highly excited Rydberg atoms to detect signals from an ordinary handheld radio. Through a careful approach to demodulating the incoming signals, Noah ...
When an electron travels through a polar crystalline solid, its negative charge attracts the positively charged atomic cores, causing the surrounding crystal lattice to deform. The electron and lattice distortion then move ...
Condensed Matter
Feb 17, 2026
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96
Keeping high-power particle accelerators at peak performance requires advanced and precise control systems. For example, the primary research machine at the U.S. Department of Energy's Thomas Jefferson National Accelerator ...
General Physics
Feb 13, 2026
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48
An international team including Cornell researcher Jake Turner has developed a novel analysis method capable of uncovering previously undetectable stellar and exoplanetary signals hidden within archival radio-astronomical ...
Astronomy
Jan 28, 2026
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5
As drones survey forests, robots navigate warehouses and sensors monitor city streets, more of the world's decision-making is occurring autonomously on the edge—on the small devices that gather information at the ends of ...
General Physics
Jan 10, 2026
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Running a synchrotron light source is a massive team effort that brings hundreds of highly skilled and specialized professionals together. The radiofrequency (RF) group at the National Synchrotron Light Source II (NSLS-II), ...
General Physics
Dec 11, 2025
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8
Highspeed Internet, autonomous driving, the Internet of Things: data streams are proliferating at enormous speed. But classic radio technology is reaching its limits: the higher the data rate, the faster the signals need ...
Condensed Matter
Dec 4, 2025
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5
Using the Tianma Radio Telescope (TMRT), researchers from the Shanghai Astronomical Observatory (SHAO) of the Chinese Academy of Sciences conducted 66 simultaneous dual‑frequency (2.25 GHz/8.60 GHz) observations of the ...
Astronomy
Nov 20, 2025
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13
A research team from Queen Mary University of London has discovered a new way to engineer thin films that can "tune" themselves much more effectively than existing materials, making them highly responsive and efficient.
Nanophysics
Nov 3, 2025
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35
A team from the Faculty of Physics and the Center for Quantum Optical Technologies at the University of Warsaw has developed a new type of all-optical radio receiver based on the fundamental properties of Rydberg atoms. The ...
Optics & Photonics
Oct 16, 2025
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