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

Polymer Classification: Architecture01:14

Polymer Classification: Architecture

4.0K
Polymers are classified as linear or branched on the basis of their chain architecture. The polymer chains in linear polymers have a long chain-like structure with minimal to no branching at all. Even if a polymer features large substituent groups on the monomer, which appear as branches to the skeleton, it is not considered a branched polymer. A branched polymer contains secondary polymer chains that arise from the main polymer chain. The branching occurs when the polymer growth shifts from...
4.0K
Bending of Members Made of Several Materials01:11

Bending of Members Made of Several Materials

643
In analyzing a structural member composed of two different materials with identical cross-sectional areas, it is crucial to understand how their distinct elastic properties affect the member's response under load. The analysis involves assessing stress and strain distributions using the transformed section concept, which accounts for variations in material properties.
Hooke's Law determines stress in each material, stating that stress is proportional to strain but varies due to each material's...
643
Polymer Classification: Stereospecificity01:26

Polymer Classification: Stereospecificity

3.3K
Polymerization generates chiral centers along the entire backbone of a polymer chain. Accordingly, the stereochemistry of the substituent group has a significant effect on polymer properties. Polymers formed from monosubstituted alkene monomers feature chiral carbons at every alternate position in the polymer backbone. Relative to the predominant orientation of substituents at the adjacent chiral carbons, the polymer can exist in three different configurations: isotactic, syndiotactic, and...
3.3K
Plastic Deformations of Members with a Single Plane of Symmetry01:21

Plastic Deformations of Members with a Single Plane of Symmetry

402
When a structural member undergoes plastic deformation due to bending, it is crucial to understand the position of the neutral axis and the stress distribution. This member, characterized by a single plane of symmetry, exhibits a uniform stress distribution, with negative stress above the neutral axis and positive stress below. Notably, the neutral axis does not align with the centroid of the cross-section. This misalignment is typical in cases where the cross-section is not rectangular or...
402
Step-Growth Polymerization: Overview01:03

Step-Growth Polymerization: Overview

4.5K
Step-growth or condensation polymerization is a stepwise reaction of bi or multifunctional monomers to form long-chain polymers. As all the monomers are reactive, most of the monomers are consumed at the early stages of the reaction to form small chains of reactive oligomers, which then combine to form long polymer chains in the late stages. Hence, the reaction has to proceed for a long time to achieve high molecular weight polymers.
Many natural and synthetic polymers are produced by...
4.5K
Generalized Hooke's Law01:22

Generalized Hooke's Law

2.8K
The generalized Hooke's Law is a broadened version of Hooke's Law, which extends to all types of stress and in every direction. Consider an isotropic material shaped into a cube subjected to multiaxial loading. In this scenario, normal stresses are exerted along the three coordinate axes. As a result of these stresses, the cubic shape deforms into a rectangular parallelepiped. Despite this deformation, the new shape maintains equal sides, and there is a normal strain in the direction of the...
2.8K

You might also read

Related Articles

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

Sort by
Same author

Development of a robust method to derive human trophoblast stem cells from late-gestation placentas and its application to preeclampsia.

Proceedings of the National Academy of Sciences of the United States of America·2026
Same author

Breaking the immune barrier: construction of cartilaginous organoids using alpha-1,3-galactosyltransferase-deficient pig cartilage-derived particles.

Journal of translational medicine·2026
Same author

Factors related to employment across vocational levels in patients with schizophrenia: focus on subminimum wage non-competitive employment.

BMC psychiatry·2026
Same author

Layer photovoltaic effect in a two-dimensional antiferromagnet with parity-time symmetry.

Nature materials·2026
Same author

A transgene-free, human peri-gastrulation embryo model presents trilaminar embryonic disc-, amnion- and yolk sac-like structures.

Nature cell biology·2026
Same author

Racemic van der Waals Assembly of Planar-Chiral 2D Materials for Intrinsic One-Dimensional Moiré Superlattices.

ACS nano·2026

Related Experiment Video

Updated: Feb 25, 2026

Author Spotlight: Real-Time Imaging of Bonding in 3D-Printed Layers
04:36

Author Spotlight: Real-Time Imaging of Bonding in 3D-Printed Layers

Published on: September 1, 2023

3.9K

Extended Polymorphism of Two-Dimensional Material.

Masaro Yoshida1,2, Jianting Ye3, Yijin Zhang4,5

  • 1RIKEN Center for Emergent Matter Science, Wako 351-0198, Japan.

Nano Letters
|August 5, 2017
PubMed
Summary
This summary is machine-generated.

Researchers discovered a new atomic structure in two-dimensional (2D) tantalum disulfide (TaS2) flakes. This unique polymorph significantly enhances the charge-density-wave (CDW) ordering temperature, opening new avenues for 2D material applications.

Keywords:
Polymorphismcharge-density-wave (CDW)electric double layer transistor (EDLT)microbeam X-ray diffractiontwo-dimensional material

More Related Videos

Density Gradient Multilayered Polymerization DGMP: A Novel Technique for Creating Multi-compartment, Customizable Scaffolds for Tissue Engineering
12:54

Density Gradient Multilayered Polymerization DGMP: A Novel Technique for Creating Multi-compartment, Customizable Scaffolds for Tissue Engineering

Published on: February 12, 2013

13.0K
Characterizing Dissipative Elastic Metamaterials Produced by Additive Manufacturing
09:39

Characterizing Dissipative Elastic Metamaterials Produced by Additive Manufacturing

Published on: June 28, 2024

1.7K

Related Experiment Videos

Last Updated: Feb 25, 2026

Author Spotlight: Real-Time Imaging of Bonding in 3D-Printed Layers
04:36

Author Spotlight: Real-Time Imaging of Bonding in 3D-Printed Layers

Published on: September 1, 2023

3.9K
Density Gradient Multilayered Polymerization DGMP: A Novel Technique for Creating Multi-compartment, Customizable Scaffolds for Tissue Engineering
12:54

Density Gradient Multilayered Polymerization DGMP: A Novel Technique for Creating Multi-compartment, Customizable Scaffolds for Tissue Engineering

Published on: February 12, 2013

13.0K
Characterizing Dissipative Elastic Metamaterials Produced by Additive Manufacturing
09:39

Characterizing Dissipative Elastic Metamaterials Produced by Additive Manufacturing

Published on: June 28, 2024

1.7K

Area of Science:

  • Condensed Matter Physics
  • Materials Science
  • Nanotechnology

Background:

  • Controlling bulk material properties typically relies on fixed crystal structures.
  • In two-dimensional (2D) materials, atomic structure and polymorphism are emerging as key parameters for property tuning.
  • Transition metal dichalcogenides (TMDCs) exhibit diverse polymorphs with significant electronic state impacts.

Purpose of the Study:

  • To report the discovery of a novel polymorph in a TMDC 2D material.
  • To investigate the structural and electronic properties of this new polymorph.
  • To explore the potential of 2D materials in accessing unique structural and electronic phases.

Main Methods:

  • Mechanical exfoliation of 2Ha-type tantalum disulfide (TaS2) single crystals into thin flakes.
  • Microbeam X-ray diffraction measurements to analyze crystal structure.
  • Electrical transport measurements to characterize electronic properties, including charge-density-wave (CDW) ordering.

Main Results:

  • Identification of an unprecedented polymorph in exfoliated TaS2 flakes, distinct from known bulk crystal structures.
  • Observation of dramatically enhanced charge-density-wave (CDW) ordering temperature in the flakes with the unique polymorph.
  • Demonstration that 2D materials can host structural and electronic phases not found in their bulk counterparts.

Conclusions:

  • The discovery highlights the potential for diverse, unexplored structural and electronic phases in 2D materials.
  • Polymorphism in 2D TMDCs offers a powerful route for tailoring material properties.
  • This work underscores the unique capabilities of 2D materials for fundamental research and technological innovation.