Search research articles

ABOUT JoVE

Overview Leadership Blog JoVE Help Center

AUTHORS

Publishing Process Editorial Board Scope & Policies Peer Review FAQ Submit

LIBRARIANS

Testimonials Subscriptions Access Resources Library Advisory Board FAQ

RESEARCH

JoVE Journal Methods Collections JoVE Encyclopedia of Experiments Archive

EDUCATION

JoVE Core JoVE Business JoVE Science Education JoVE Lab Manual Faculty Resource Center Faculty Site

Terms & Conditions of Use

Related Concept Videos

Reaction Mechanisms

Reaction Mechanisms

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:

Mechanical Protein Functions

Mechanical Protein Functions

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.

Mechanism of Conjugation

Mechanism of Conjugation

Bacterial conjugation is a mechanism of horizontal gene transfer that enables the exchange of genetic material between bacterial cells through direct contact. This process is facilitated by a donor cell carrying a conjugative plasmid, which encodes genes necessary for pilus formation, DNA replication, and transfer. The conjugative plasmid plays a central role in initiating and executing the transfer of genetic material.The tra region of the conjugative plasmid encodes proteins responsible for...

Mechanism of Angiogenesis

Mechanism of Angiogenesis

Blood vessel formation starts early during embryonic development, around day 7. In the extraembryonic yolk sac, mesodermal precursor cells called hemangioblast proliferate and differentiate into angioblast. Angioblasts express vascular endothelial growth factor receptor 2 or VEGFR2, which binds VEGF-A, a proangiogenic factor, guiding blood vessel formation. VEGF signaling promotes angioblasts to form a blood island in the developing embryo. Angioblasts further differentiate, giving rise to...

An Introduction to Mechanics

An Introduction to Mechanics

Humans have been making ships, shelters, pyramids, weapons, agricultural equipment, and many more items without recording the process or theory behind them for centuries. It would be challenging to document the evolution of mechanics from its origin to the present.
According to records, the history of mechanics starts with Aristotle (384–322 BC). He related mechanics to physical theory, aiming for a universal synthesis.
Newton defined mechanics as the branch of physical science that...

Mechanical Systems

Mechanical Systems

Mechanical systems are analogous to to electrical networks where springs and masses play similar roles to inductors and capacitors, respectively. A viscous damper in mechanical systems functions similarly to a resistor in electrical networks, dissipating energy. The forces acting on a mass in such systems include an applied force in the direction of motion, counteracted by forces from the spring, a viscous damper, and the mass's acceleration. This interplay of forces is mathematically...

You might also read

Related Articles

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

Sort by

Same author

Elasto-optic transduction in polymer-cladded silicon microring arrays for real-time 2D force mapping.

Optics express·2026

Same author

Extrusion-based additive manufacturing of zinc bone scaffolds.

Acta biomaterialia·2026

Same author

Three-Dimensional Bioprinting of Regenerative Cartilage Constructs with Directional Ionically Derived Stiffness Gradients.

Journal of functional biomaterials·2025

Same author

Shape modeling of longitudinal medical images: from diffeomorphic metric mapping to deep learning.

Frontiers in artificial intelligence·2025

Same author

Alternating magnetic field and induction heating as antibacterial therapy in implant-associated infections.

International journal of hyperthermia : the official journal of European Society for Hyperthermic Oncology, North American Hyperthermia Group·2025

Same author

Patellar and Femoral Bone Morphology Is Associated With Overweight and Sports Participation in Young Adolescents.

Journal of orthopaedic research : official publication of the Orthopaedic Research Society·2025

Search research articles

Related Experiment Video

Updated: Jan 28, 2026

Fabricating Metamaterials Using the Fiber Drawing Method

Fabricating Metamaterials Using the Fiber Drawing Method

Published on: October 18, 2012

Non-Auxetic Mechanical Metamaterials.

Christa P de Jonge¹, Helena M A Kolken², Amir A Zadpoor³

¹Faculty of Mechanical, Maritime and Materials Engineering, Delft University of Technology (TU Delft), Mekelweg 2, 2628 CD Delft, The Netherlands. c.p.dejonge@student.tudelft.nl.

Materials (Basel, Switzerland)

|February 23, 2019

Summary

This review explores non-auxetic mechanical metamaterials, focusing on topology-property relationships. Compression-dominated lattices, like the cube, exhibit superior mechanical properties for potential bone-mimicking applications.

Keywords:

fatigue lattice structures mechanical metamaterials non-auxetic volume-preserving materials

More Related Videos

Characterizing Dissipative Elastic Metamaterials Produced by Additive Manufacturing

Characterizing Dissipative Elastic Metamaterials Produced by Additive Manufacturing

Published on: June 28, 2024

Simulation, Fabrication and Characterization of THz Metamaterial Absorbers

Simulation, Fabrication and Characterization of THz Metamaterial Absorbers

Published on: December 27, 2012

Related Experiment Videos

Last Updated: Jan 28, 2026

Fabricating Metamaterials Using the Fiber Drawing Method

Fabricating Metamaterials Using the Fiber Drawing Method

Published on: October 18, 2012

Characterizing Dissipative Elastic Metamaterials Produced by Additive Manufacturing

Characterizing Dissipative Elastic Metamaterials Produced by Additive Manufacturing

Published on: June 28, 2024

Simulation, Fabrication and Characterization of THz Metamaterial Absorbers

Simulation, Fabrication and Characterization of THz Metamaterial Absorbers

Published on: December 27, 2012

Area of Science:

Materials Science
Mechanical Engineering
Additive Manufacturing

Background:

Mechanical metamaterials offer tunable properties via micro-architectural design.
Additive manufacturing (AM) enables precise fabrication of complex metamaterial structures.
While auxetic metamaterials are well-reviewed, non-auxetic counterparts require further investigation.

Purpose of the Study:

To review topology-property relationships of non-auxetic mechanical metamaterials.
To analyze five specific topological designs: diamond, cube, truncated cube, rhombic dodecahedron, and truncated cuboctahedron.
To examine mechanical properties, fatigue behavior, and AM process effects.

Main Methods:

Systematic review of experimental, computational, and analytical data from literature.
Focus on titanium alloy Ti-6Al-4V for data analysis.
Analysis of topology-property correlations and fatigue strength.

Main Results:

Compression-dominated lattices, particularly the (truncated) cube, demonstrated the highest mechanical properties.
All reviewed unit cells exhibited normalized fatigue strengths between 12-36% of their yield stress, below solid titanium.
The study provides a comprehensive analysis of non-auxetic metamaterial designs.

Conclusions:

Non-auxetic mechanical metamaterials offer diverse mechanical properties based on their topology.
The reviewed unit cells show potential for applications in bone-mimicking porous structures.
Further research into fatigue behavior and AM process optimization is warranted.