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How a chorus of synchronized frequencies helps you digest your food

Researchers at the University of California San Diego found that oscillators operating at similar frequencies lock onto each other in succession, creating a staircase effect in the gut. This new mathematical solution answers two longstanding biological questions, shedding light on how food moves through the digestive tract and is churned.

SourceUniversity of California - San Diego·JournalPhysical Review Letters·TypeExperimental study·DateOct 30, 2025

"High notes from one side, deep tones from the other" – Janus-like wave transmission

A research team has experimentally demonstrated a nonlinear wave phenomenon that changes its frequency depending on the direction of incoming waves. The system exhibits different responses to waves entering from one side versus the other, with potential applications in medical ultrasound imaging and noise control.

SourcePohang University of Science & Technology (POSTECH)·JournalPhysical Review Letters·DateJul 24, 2025

A new approach to detecting Alzheimer’s disease

Researchers at Lancaster University have developed a new method to detect Alzheimer's disease by analyzing changes in brain oxygenation dynamics and neuronal function. The study found that individuals with Alzheimer's disease exhibit altered respiratory frequency, which may be an early indicator of the condition.

SourceLancaster University·JournalBrain Communications·TypeExperimental study·DateFeb 2, 2025

Symmetry breaking by ultrashort light pulses opens new quantum pathways for coherent phonons

Researchers at Max Born Institute find that ultrafast mid-infrared excitation of electrons in bismuth reduces crystal symmetry, opening new quantum pathways for coherent phonon excitation. This leads to bidirectional atomic motions and oscillations with a frequency different from low-excitation levels.

SourceMax Born Institute for Nonlinear Optics and Short Pulse Spectroscopy (MBI)·JournalPhysical Review B·TypeExperimental study·DateMay 30, 2023

Helpful disturbance: How non-linear dynamics can augment edge sensor time series

Engineers at Tokyo Institute of Technology have developed a technique to support the classification performance of neural networks operating on sensor time series by feeding recorded signals into elementary non-linear dynamical systems. This approach increases the classification performance by augmenting the data through additional tim...

SourceTokyo Institute of Technology·JournalChaos Solitons & Fractals·TypeExperimental study·DateJan 25, 2023

Researchers succeeded in developing a light source that produced two entangled light beams

Scientists successfully created a light source that produced two entangled light beams using rubidium atoms. The entanglement was achieved by adding new detection steps to measure the quantum correlations in the amplitudes and phases of the fields generated, enabling applications in quantum computing, encryption, and metrology.

The whole in a part: Synchronizing chaos through a narrow slice of spectrum

The study demonstrates that chaos synchronization can occur even under constraints of narrow frequency intervals, giving rise to phenomena that could be leveraged for useful operations in ensembles of distant nodes. This breakthrough has potential applications in distributed sensing, such as gathering readings from distant sensors.

SourceTokyo Institute of Technology·JournalChaos Solitons & Fractals·TypeExperimental study·DateNov 25, 2022