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 Experiment Videos

Feedback control of unstable cellular solidification fronts.

A J Pons1, A Karma, S Akamatsu

  • 1Physics Department and Center for Interdisciplinary Research on Complex Systems, Northeastern University, Boston, Massachusetts 02115, USA. a.pons-rivero@neu.edu

Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics
|March 16, 2007
PubMed
Summary
This summary is machine-generated.

Related Concept Videos

You might also read

Related Articles

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

Sort by
Same author

Solidification furnace for in situ observation of bulk transparent systems and image analysis methods.

The Review of scientific instruments·2023
Same author

Microgravity studies of solidification patterns in model transparent alloys onboard the International Space Station.

NPJ microgravity·2023
Same author

Parameter and coupling estimation in small networks of Izhikevich's neurons.

Chaos (Woodbury, N.Y.)·2023
Same author

Continuous high-frequency pesticide monitoring to observe the unexpected and the overlooked.

Water research X·2021
Same author

Inferring the connectivity of coupled chaotic oscillators using Kalman filtering.

Scientific reports·2021
Same author

Experimental characterization and theoretical analysis of cell tip oscillations in directional solidification.

Physical review. E·2020
Same journal

Tension on dsDNA bound to ssDNA-RecA filaments may play an important role in driving efficient and accurate homology recognition and strand exchange.

Physical review. E, Statistical, nonlinear, and soft matter physics·2016
Same journal

Publisher's Note: Amplitude-phase coupling drives chimera states in globally coupled laser networks [Phys. Rev. E 91, 040901(R) (2015)].

Physical review. E, Statistical, nonlinear, and soft matter physics·2016
Same journal

Erratum: Shapes of sedimenting soft elastic capsules in a viscous fluid [Phys. Rev. E 92, 033003 (2015)].

Physical review. E, Statistical, nonlinear, and soft matter physics·2016
Same journal

Erratum: Attenuation of excitation decay rate due to collective effect [Phys. Rev. E 90, 022142 (2014)].

Physical review. E, Statistical, nonlinear, and soft matter physics·2016
Same journal

Publisher's Note: Role of connectivity and fluctuations in the nucleation of calcium waves in cardiac cells [Phys. Rev. E 92, 052715 (2015)].

Physical review. E, Statistical, nonlinear, and soft matter physics·2016
Same journal

Publisher's Note: Lattice Boltzmann approach for complex nonequilibrium flows [Phys. Rev. E 92, 043308 (2015)].

Physical review. E, Statistical, nonlinear, and soft matter physics·2016
See all related articles

This study introduces a feedback control method using local heating to stabilize unstable cellular patterns in binary alloy solidification. The technique successfully achieved uniform spacing below instability thresholds, confirmed by simulations and experiments.

Area of Science:

  • Materials Science
  • Physics
  • Chemical Engineering

Background:

  • Directional solidification of binary alloys often leads to unstable cellular patterns.
  • Maintaining uniform spacing in these patterns is crucial for material properties.

Purpose of the Study:

  • To develop and validate a feedback control scheme for stabilizing unstable cellular patterns.
  • To achieve uniform cell spacing below the threshold for period-doubling instability.

Main Methods:

  • Phase-field simulations were employed to model the process.
  • Experiments utilized real-time image processing to track cell tips.
  • A movable laser spot array provided local heating for feedback control.

Main Results:

Related Experiment Videos

  • The feedback control scheme effectively stabilized unstable cellular patterns.
  • Uniform cell spacing was achieved, even below the instability threshold.
  • Numerical predictions were validated by experimental results.

Conclusions:

  • Local heating feedback control is a feasible method for stabilizing cellular patterns.
  • The technique allows for the formation of uniform spacings in binary alloy solidification.
  • Minimal heating is sufficient to maintain stability.