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

Group Polarization01:01

Group Polarization

39.2K
Group polarization is the strengthening of an original group attitude following the discussion of views within a group (Teger & Pruitt, 1967). That is, if a group initially favors a viewpoint, after discussion the group consensus is likely a stronger endorsement of the viewpoint. Conversely, if the group was initially opposed to a viewpoint, group discussion would likely lead to stronger opposition.
39.2K
Classifying Matter by State02:49

Classifying Matter by State

102.9K
Chemistry is the study of matter and the changes it undergoes. Matter is anything that has mass and occupies space. Matter is all around us; the air, water, soil, mountains, even our bodies are all examples of matter. Matter is divided into three states — solid, liquid, and gas — that are commonly found on earth. The fourth state of matter, plasma, occurs naturally in the interiors of stars. 
102.9K
Classifying Matter by Composition03:35

Classifying Matter by Composition

90.1K
Matter: Pure Substances and Mixtures
According to its composition, the matter can be classified into two broad categories — pure substances and mixtures. 
A pure substance is a form of matter that has a constant composition throughout with uniform properties. For example, any sample of sucrose has the same composition and same physical properties, such as melting point, color, and sweetness, regardless of the source from which it is isolated. 
A mixture is composed of two or...
90.1K
Physical and Chemical Properties of Matter02:57

Physical and Chemical Properties of Matter

165.9K
The characteristics that enable us to distinguish one substance from another are called properties.
165.9K
Molecular Shape and Polarity03:37

Molecular Shape and Polarity

75.4K
Dipole Moment of a Molecule
75.4K
The Atomic Theory of Matter02:59

The Atomic Theory of Matter

127.6K
The earliest recorded discussion of the basic structure of matter comes from ancient Greek philosophers. Leucippus and Democritus argued that all matter was composed of small, finite particles that they called atomos, meaning “indivisible.” Later, Aristotle and others came to the conclusion that matter consisted of various combinations of the four “elements” — fire, earth, air, and water — and could be infinitely divided. Interestingly, these philosophers...
127.6K

You might also read

Related Articles

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

Sort by
Same author

Pediatric Resident Post-Rounds Communication With Families Using Languages Other Than English.

Hospital pediatrics·2026
Same author

Racial and Ethnic Disparities in Length of Stay for Pediatric Bacterial Tracheostomy-Associated Infections.

Hospital pediatrics·2026
Same author

Child Opportunity Index and 30-Day Readmission Among Children Discharged With New Long-Term Mechanical Ventilation via Tracheostomy: A Pediatric Health Information System Database Study, 2014-2023.

Pediatric critical care medicine : a journal of the Society of Critical Care Medicine and the World Federation of Pediatric Intensive and Critical Care Societies·2026
Same author

Early Antibiotic Discontinuation for Children With a Positive Rapid Respiratory Viral Test Hospitalized for Suspected Bacterial Tracheostomy-Associated Infections.

Pediatric pulmonology·2026
Same author

The child opportunity index and discharge disposition among children with new tracheostomy and long-term mechanical ventilation.

Annals of the American Thoracic Society·2026
Same author

Pediatric tracheostomy-associated respiratory infections: an evolving paradigm.

Current opinion in pediatrics·2026

Related Experiment Video

Updated: Jan 28, 2026

Analyzing the Function of Small GTPases by Microinjection of Plasmids into Polarized Epithelial Cells
09:38

Analyzing the Function of Small GTPases by Microinjection of Plasmids into Polarized Epithelial Cells

Published on: May 31, 2011

11.9K

Pulsar Polarization Array Limits on Ultralight Axionlike Dark Matter.

Xiao Xue1,2,3, Shi Dai4, Hoang Nhan Luu5

  • 1Institut de Física d'Altes Energies (IFAE), The Barcelona Institute of Science and Technology, Campus UAB, 08193 Bellaterra (Barcelona), Spain.

Physical Review Letters
|January 26, 2026
PubMed
Summary

The first pulsar polarization array analysis detected ultralight axionlike dark matter (ALDM). This study provides the best limits on ALDM Chern-Simons coupling, crucial for understanding dark matter.

More Related Videos

Measuring Magnetically-Tuned Ferroelectric Polarization in Liquid Crystals
07:03

Measuring Magnetically-Tuned Ferroelectric Polarization in Liquid Crystals

Published on: August 15, 2018

9.2K
Analysis of Cancer Cell Invasion and Anti-metastatic Drug Screening Using Hydrogel Micro-chamber Array HMCA-based Plates
08:32

Analysis of Cancer Cell Invasion and Anti-metastatic Drug Screening Using Hydrogel Micro-chamber Array HMCA-based Plates

Published on: October 25, 2018

9.5K

Related Experiment Videos

Last Updated: Jan 28, 2026

Analyzing the Function of Small GTPases by Microinjection of Plasmids into Polarized Epithelial Cells
09:38

Analyzing the Function of Small GTPases by Microinjection of Plasmids into Polarized Epithelial Cells

Published on: May 31, 2011

11.9K
Measuring Magnetically-Tuned Ferroelectric Polarization in Liquid Crystals
07:03

Measuring Magnetically-Tuned Ferroelectric Polarization in Liquid Crystals

Published on: August 15, 2018

9.2K
Analysis of Cancer Cell Invasion and Anti-metastatic Drug Screening Using Hydrogel Micro-chamber Array HMCA-based Plates
08:32

Analysis of Cancer Cell Invasion and Anti-metastatic Drug Screening Using Hydrogel Micro-chamber Array HMCA-based Plates

Published on: October 25, 2018

9.5K

Area of Science:

  • Astrophysics and Cosmology
  • Particle Physics

Background:

  • Ultralight axionlike dark matter (ALDM) is a leading dark matter candidate, exhibiting wave-like properties on cosmic scales.
  • ALDM may resolve issues with small-scale structures in galaxies.

Purpose of the Study:

  • To perform the first pulsar polarization array (PPA) analysis for detecting ultralight axionlike dark matter (ALDM).
  • To utilize polarization data from 22 millisecond pulsars from the Parkes pulsar timing array's third data release.

Main Methods:

  • Developed an advanced Bayesian analysis framework.
  • Constructed pulsar position angle (PA) residual time series.
  • Modeled noise contributions and searched for pulsar cross-correlations.

Main Results:

  • Established the best global limits on the ALDM Chern-Simons coupling for a specific ALDM density (ρ₀=0.4 GeV/cm³).
  • Derived limits on the coupling constant are ≲10⁻¹³·⁵–10⁻¹²·² GeV⁻¹ for ALDM masses in the range 10⁻²²–10⁻²¹ eV.
  • Highlighted the importance of pulsar cross-correlation for interpreting the results.

Conclusions:

  • The Parkes PPA analysis sets stringent constraints on ultralight axionlike dark matter.
  • This method demonstrates the potential of PPA for dark matter detection and characterization.