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

Members Made of Elastoplastic Material01:19

Members Made of Elastoplastic Material

403
The behavior of elastoplastic materials under bending stresses, particularly in structural members with rectangular cross-sections, is crucial for predicting material responses and understanding failure modes. Initially, when a bending moment is applied, the stress distribution across the section follows Hooke's Law and is linear and elastic. This distribution means the stress increases from the neutral axis to the maximum at the outer fibers, up to the elastic limit.
As the bending moment...
403
Genetic Material01:20

Genetic Material

3.8K
Within the human body, a complex and detailed system of trillions of cells works in unison to sustain life. Each cell houses a nucleus, which contains 46 chromosomes divided into 23 pairs. Chromosomes are highly coiled structures made of the genetic material DNA. These chromosomes are essential carriers of genetic information, with half inherited from the mother through her egg and the other half from the father's sperm, combining to create the unique genetic makeup of an individual.
3.8K
Bending of Members Made of Several Materials01:11

Bending of Members Made of Several Materials

615
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...
615
Bending of Material: Problem Solving01:09

Bending of Material: Problem Solving

534
In this lesson, determine the ratio of the maximum bending moments applied to two metal pipes, given that both pipes can withstand a maximum stress of 100 MPa. Both pipes have an outer radius of 1.8 cm. Pipe A has an inner radius of 1.5 cm, and Pipe B has an inner radius of 1 cm. The ratio of the maximum bending moment applied to two metallic pipes, each with a different inner and outer radius, is determined by considering their dimensions. The inner radius of the first pipe is 1.5 cm, and for...
534
Reaction Mechanisms03:06

Reaction Mechanisms

30.9K
Chemical reactions often occur in a stepwise fashion, involving two or more distinct reactions taking place in a sequence. A balanced equation indicates the reacting species and the product species, but it reveals no details about how the reaction occurs at the molecular level. The reaction mechanism (or reaction path) provides details regarding the precise, step-by-step process by which a reaction occurs.
For instance, the decomposition of ozone appears to follow a mechanism with two steps:
30.9K
Mechanical Protein Functions01:58

Mechanical Protein Functions

5.6K
Proteins perform many mechanical functions in a cell. These proteins can be classified into two general categories- proteins that generate mechanical forces and proteins that are subjected to mechanical forces. Proteins providing mechanical support to the structure of the cell, such as keratin, are subjected to mechanical force, whereas proteins involved in cell movement and transport of molecules across cell membranes, such as an ion pump, are examples of generating mechanical force. 
5.6K

You might also read

Related Articles

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

Sort by
Same author

Dynamic Electron-Hole Shuttle at Atomic Interfaces for Solar-Driven H<sub>2</sub>O<sub>2</sub> and Benzaldehyde Coproduction.

Advanced materials (Deerfield Beach, Fla.)·2026
Same author

Possible Peierls Distortion Through Re<sub>2</sub> Dimer Formation in the LaNiO<sub>2</sub>-Type Nitrides LnReN<sub>2</sub> (Ln = Pr, Nd).

Angewandte Chemie (International ed. in English)·2025
Same author

Multiple bonding in unbridged Mn-Mn dimers of solid-state nitridomanganate(IV) oxide Ca<sub>6</sub>[Mn<sub>2</sub>N<sub>6</sub>]O.

Chemical communications (Cambridge, England)·2025
Same author

Tunable Magnetoresistive Gas Sensing Enabled by La-Deficient LaFeO<sub>3</sub>.

ACS sensors·2025
Same author

Chemical tuning of a double double perovskite oxide.

Chemical communications (Cambridge, England)·2025
Same author

Anion-Exchange Membrane Electrolysis for Efficient Uranium Extraction from Saline Wastewater.

Advanced materials (Deerfield Beach, Fla.)·2025
Same journal

An integrated annotation strategy for the phytochemical characterization of Xie-Bai-San decoction based on UPLC-Q Exactive Orbitrap HRMS, multi-database screening, and feature-based molecular networking.

Frontiers in chemistry·2026
Same journal

Core-shell structured nanomaterials in dual-modal magnetic resonance imaging guided antitumor effect via combined treatment.

Frontiers in chemistry·2026
Same journal

Photo-responsive nanozymes: from photocatalytic mechanisms to precision therapy.

Frontiers in chemistry·2026
Same journal

From theoretical energy to practical utilization: interfacial stability, transport kinetics, and cell-level design in high-energy lithium-metal batteries.

Frontiers in chemistry·2026
Same journal

Zinc-vacancy defects in ZnO nanorods induced visible-light activity of photoelectrochemical glucose sensing: experimental and DFT+U analysis.

Frontiers in chemistry·2026
Same journal

Integrating multi-isotope calibration and infrared-assisted digestion for robust and sustainable multielemental determination in agroalimentary matrices by ICP-MS.

Frontiers in chemistry·2026
See all related articles

Related Experiment Video

Updated: Feb 5, 2026

Concurrent Quantitative Conductivity and Mechanical Properties Measurements of Organic Photovoltaic Materials using AFM
08:59

Concurrent Quantitative Conductivity and Mechanical Properties Measurements of Organic Photovoltaic Materials using AFM

Published on: January 23, 2013

12.2K

Mechanisms and Materials for NTE.

J Paul Attfield1

  • 1Centre for Science at Extreme Conditions and School of Chemistry, University of Edinburgh, Edinburgh, United Kingdom.

Frontiers in Chemistry
|September 7, 2018
PubMed
Summary
This summary is machine-generated.

Negative thermal expansion (NTE) is an unusual property where materials contract upon heating. This review covers structural and electronic mechanisms, and material examples like Invar alloys and perovskites.

Keywords:
electronic NTEmorphological NTEnegative thermal expansionstructural NTEthermal expansionthermal expansion coefficient

More Related Videos

Micro 3D Printing Using a Digital Projector and its Application in the Study of Soft Materials Mechanics
09:24

Micro 3D Printing Using a Digital Projector and its Application in the Study of Soft Materials Mechanics

Published on: November 27, 2012

25.9K
Quasistatic Mechanical Testing for Computer-Aided Design and Manufacturing Occlusal Veneers Cemented to Milled Dentin Analog Material
07:42

Quasistatic Mechanical Testing for Computer-Aided Design and Manufacturing Occlusal Veneers Cemented to Milled Dentin Analog Material

Published on: December 20, 2024

875

Related Experiment Videos

Last Updated: Feb 5, 2026

Concurrent Quantitative Conductivity and Mechanical Properties Measurements of Organic Photovoltaic Materials using AFM
08:59

Concurrent Quantitative Conductivity and Mechanical Properties Measurements of Organic Photovoltaic Materials using AFM

Published on: January 23, 2013

12.2K
Micro 3D Printing Using a Digital Projector and its Application in the Study of Soft Materials Mechanics
09:24

Micro 3D Printing Using a Digital Projector and its Application in the Study of Soft Materials Mechanics

Published on: November 27, 2012

25.9K
Quasistatic Mechanical Testing for Computer-Aided Design and Manufacturing Occlusal Veneers Cemented to Milled Dentin Analog Material
07:42

Quasistatic Mechanical Testing for Computer-Aided Design and Manufacturing Occlusal Veneers Cemented to Milled Dentin Analog Material

Published on: December 20, 2024

875

Area of Science:

  • Materials Science
  • Solid-State Physics
  • Thermodynamics

Background:

  • Negative thermal expansion (NTE) is a counterintuitive property where materials contract when heated.
  • Observed in various materials across different temperature ranges.
  • Understanding NTE mechanisms is crucial for advanced material design.

Purpose of the Study:

  • To review the fundamental mechanisms driving negative thermal expansion.
  • To highlight prominent materials exhibiting NTE.
  • To discuss structure-property relationships in NTE phenomena.

Main Methods:

  • Literature review of intrinsic and extrinsic NTE mechanisms.
  • Analysis of structural and electronic contributions to NTE.
  • Case studies of representative NTE materials (e.g., ZrW2O8, Invar alloys, BiNiO3).

Main Results:

  • Identified two primary intrinsic NTE mechanisms: structural (transverse vibrations) and electronic (phase transitions, magnetism).
  • Highlighted materials like ZrW2O8, ScF3, Invar alloys, and BiNiO3.
  • Discussed extrinsic NTE arising from sample morphology (nanoparticles) and microstructural engineering (ceramics, metamaterials).

Conclusions:

  • NTE is driven by diverse mechanisms, both intrinsic to material structure/electronics and extrinsic to morphology.
  • Materials exhibiting NTE range from framework insulators to magnetic alloys and perovskites.
  • Tailoring material structure and morphology offers pathways to control and enhance NTE properties.