Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Precipitate Formation and Particle Size Control01:16

Precipitate Formation and Particle Size Control

5.8K
In precipitation gravimetry, the precipitating agent should react specifically or selectively with the analyte. While a specific reagent reacts with the analyte alone, a selective reagent can react with a limited number of chemical species.
The obtained precipitate should be either a pure substance of known composition or easily converted to one by a simple process, such as ignition or drying. In addition, the precipitate should be insoluble and easily filterable. In general, filterability...
5.8K
The de Broglie Wavelength02:32

The de Broglie Wavelength

25.6K
In the macroscopic world, objects that are large enough to be seen by the naked eye follow the rules of classical physics. A billiard ball moving on a table will behave like a particle; it will continue traveling in a straight line unless it collides with another ball, or it is acted on by some other force, such as friction. The ball has a well-defined position and velocity or well-defined momentum, p = mv, which is defined by mass m and velocity v at any given moment. This is the typical...
25.6K

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Extreme abiotics drive sediment biocomplexity along pH gradients in a shallow submarine volcanic vent.

Marine pollution bulletin·2024
Same author

g-fractional diffusion models in bounded domains.

Physical review. E·2023
Same author

Optical diffraction tomography of 3D microstructures using a low coherence source.

Optics express·2022
Same author

Run-and-tumble motion in one dimension with space-dependent speed.

Physical review. E·2019
Same author

Critical phenomena in active matter.

Physical review. E·2016
Same author

Holographic tracking and sizing of optically trapped microprobes in diamond anvil cells.

Optics express·2016

Related Experiment Video

Updated: Apr 26, 2026

Live Cell Imaging of F-actin Dynamics via Fluorescent Speckle Microscopy FSM
19:16

Live Cell Imaging of F-actin Dynamics via Fluorescent Speckle Microscopy FSM

Published on: August 5, 2009

15.2K

Run-and-tumble particles in speckle fields.

M Paoluzzi1, R Di Leonardo, L Angelani

  • 1CNR-IPCF, UOS Roma, Dipartimento di Fisica, Università Sapienza, P.le Aldo Moro 2, I-00185, Rome, Italy.

Journal of Physics. Condensed Matter : an Institute of Physics Journal
|August 9, 2014
PubMed
Summary
This summary is machine-generated.

Speckle fields can trap micro-particles. Molecular dynamics simulations reveal a crossover in bacteria suspension behavior when speckle forces match bacterial propulsion.

More Related Videos

Three-dimensional Particle Tracking Velocimetry for Turbulence Applications: Case of a Jet Flow
13:02

Three-dimensional Particle Tracking Velocimetry for Turbulence Applications: Case of a Jet Flow

Published on: February 27, 2016

12.1K
Laboratory Drop Towers for the Experimental Simulation of Dust-aggregate Collisions in the Early Solar System
09:44

Laboratory Drop Towers for the Experimental Simulation of Dust-aggregate Collisions in the Early Solar System

Published on: June 5, 2014

15.6K

Related Experiment Videos

Last Updated: Apr 26, 2026

Live Cell Imaging of F-actin Dynamics via Fluorescent Speckle Microscopy FSM
19:16

Live Cell Imaging of F-actin Dynamics via Fluorescent Speckle Microscopy FSM

Published on: August 5, 2009

15.2K
Three-dimensional Particle Tracking Velocimetry for Turbulence Applications: Case of a Jet Flow
13:02

Three-dimensional Particle Tracking Velocimetry for Turbulence Applications: Case of a Jet Flow

Published on: February 27, 2016

12.1K
Laboratory Drop Towers for the Experimental Simulation of Dust-aggregate Collisions in the Early Solar System
09:44

Laboratory Drop Towers for the Experimental Simulation of Dust-aggregate Collisions in the Early Solar System

Published on: June 5, 2014

15.6K

Area of Science:

  • Physics, Soft Matter
  • Biophysics

Background:

  • Speckle fields create random energy landscapes for micro-particle manipulation.
  • Active suspensions, like swimming bacteria, exhibit complex behaviors.

Purpose of the Study:

  • Investigate static and dynamic properties of bacteria in speckle patterns.
  • Identify behavioral changes based on the interplay between speckle forces and bacterial propulsion.

Main Methods:

  • Utilized molecular dynamics simulations.
  • Analyzed density fluctuations and equilibrium density profiles of bacteria.

Main Results:

  • Observed a crossover phenomenon in the active suspension.
  • The crossover occurs when speckle forces balance bacterial propulsion forces.

Conclusions:

  • Speckle fields offer a method for controlling active matter.
  • The balance of forces dictates the emergent properties of bacterial suspensions in random landscapes.