Related Experiment Video
Updated: Jun 5, 2026

Generation and Coherent Control of Pulsed Quantum Frequency Combs
Published on: June 8, 2018
Highly nonlinear pulse splitting and recombination in a two-dimensional granular network.
C Daraio1, D Ngo, V F Nesterenko
1Aeronautics (GALCIT) and Applied Physics, California Institute of Technology, Pasadena, California 91125, USA.
Nonlinear solitary waves in granular chains exhibit complex behaviors at branch interfaces. The study reveals pulse splitting, signal chaos, and energy trapping in branched granular systems.
Area of Science:
- Physics
- Nonlinear Dynamics
- Materials Science
Background:
- Granular systems exhibit unique nonlinear wave propagation properties.
- Branched structures introduce complex interfaces affecting wave dynamics.
Purpose of the Study:
- Investigate the propagation of highly nonlinear signals in branched 2D granular systems.
- Analyze the behavior of solitary pulses at the interface of different granular chains.
Main Methods:
- Experimental investigation using chains of spherical beads in a double Y-shaped guide.
- Numerical simulations based on Hertzian interaction between particles and guide walls.
Main Results:
- Observed pulse splitting, signal chaotization, impulse redirection, and bending.
- Reported pulse and energy trapping within the branches.
- Numerical results agreed with experimental data for symmetric arrangements.
Conclusions:
- Branched granular systems demonstrate rich nonlinear dynamics.
- The geometry and material properties significantly influence wave propagation and energy distribution.
More Related Videos
11:03An Analog Macroscopic Technique for Studying Molecular Hydrodynamic Processes in Dense Gases and Liquids
Published on: December 4, 2017
09:00Visualization of Failure and the Associated Grain-Scale Mechanical Behavior of Granular Soils under Shear using Synchrotron X-Ray Micro-Tomography
Published on: September 29, 2019
Related Concept Videos
Carrier Generation and Recombination
This process is given by the generation rate G and is efficient due to the conservation of momentum between the valence band maximum and conduction band minimum.
Indirect generation involves an...
Interpreting ¹H NMR Signal Splitting: The (n + 1) Rule
¹³C NMR: ¹H–¹³C Decoupling
A broadband decoupling technique is used to simplify these complex, sometimes overlapping, signals. Broadband decoupling relies on a...
NMR Spectrometers: Radiofrequency Pulses and Pulse Sequences
Propagation of Action Potentials
Neurons (nerve cells) have a resting membrane potential, with a slightly negative charge inside compared to outside. This is maintained by ion channels, such as sodium (Na+) and potassium (K+) channels, which control the flow of ions. When a stimulus, like a touch or a signal from another neuron, triggers the neuron, sodium channels open, allowing sodium ions to...
¹H NMR Signal Multiplicity: Splitting Patterns