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

Nuclear Stability03:18

Nuclear Stability

23.3K
Protons and neutrons, collectively called nucleons, are packed together tightly in a nucleus. With a radius of about 10−15 meters, a nucleus is quite small compared to the radius of the entire atom, which is about 10−10 meters. Nuclei are extremely dense compared to bulk matter, averaging 1.8 × 1014 grams per cubic centimeter. If the earth’s density were equal to the average nuclear density, the earth’s radius would be only about 200 meters.
To hold positively charged protons together...
23.3K
RNA Stability01:53

RNA Stability

35.7K
Intact DNA strands can be found in fossils, while scientists sometimes struggle to keep RNA intact under laboratory conditions. The structural variations between RNA and DNA underlie the differences in their stability and longevity. Because DNA is double-stranded, it is inherently more stable. The single-stranded structure of RNA is less stable but also more flexible and can form weak internal bonds. Additionally, most RNAs in the cell are relatively short, while DNA can be up to 250 million...
35.7K
Stability01:28

Stability

418
The time response of a linear time-invariant (LTI) system can be divided into transient and steady-state responses. The transient response represents the system's initial reaction to a change in input and diminishes to zero over time. In contrast, the steady-state response is the behavior that persists after the transient effects have faded.
The stability of an LTI system is determined by the roots of its characteristic equation, known as poles. A system is stable if it produces a bounded...
418
Stability of structures01:14

Stability of structures

523
In mechanical engineering, the stability of systems under various forces is critical for designing durable and efficient structures. One fundamental way to explore these concepts is by analyzing systems like two rods connected at a pivot point, O, with a torsional spring of spring constant k at the pivot point. This system is similar in appearance to a scissor jack used to change tires on a car. In this case, the arms of the linkage (equivalent to the rods in this system) are entirely vertical,...
523
Pole and System Stability01:24

Pole and System Stability

966
The transfer function is a fundamental concept representing the ratio of two polynomials. The numerator and denominator encapsulate the system's dynamics. The zeros and poles of this transfer function are critical in determining the system's behavior and stability.
Simple poles are unique roots of the denominator polynomial. Each simple pole corresponds to a distinct solution to the system's characteristic equation, typically resulting in exponential decay terms in the system's...
966
Multimachine Stability01:25

Multimachine Stability

581
Multimachine stability analysis is crucial for understanding the dynamics and stability of power systems with multiple synchronous machines. The objective is to solve the swing equations for a network of M machines connected to an N-bus power system.
In analyzing the system, the nodal equations represent the relationship between bus voltages, machine voltages, and machine currents. The nodal equation is given by:
581

You might also read

Related Articles

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

Sort by
Same author

The Mott-Jones Electron Crystal: Patterning Atomic Positions for Pseudogap Formation in Hume-Rothery Phases.

Inorganic chemistry·2026
Same author

Mo<sub>4</sub>FeGa<sub>17.25- <i>x</i></sub> Ge <sub><i>x</i></sub> : Complementary Point Substitutions, Buffering Frameworks, and Merging of the 18‑<i>n</i> and Octet Bonding Schemes.

Chemistry of materials : a publication of the American Chemical Society·2026
Same author

Short-range order in high entropy carbides.

Nature communications·2026
Same author

Interface Nucleus Templating of Modular Intermetallic Morphologies: Chemical Pressure Complementarity, Columnar Domains, and Complex Disorder in Y<sub>13</sub>Ag<sub>42.7</sub>Zn<sub>29.7</sub>.

Inorganic chemistry·2025
Same author

The 2,240-Atom Unit Cell of PrMg<sub>1.6</sub>Zn<sub>5.4</sub>: An Intergrowth of the Laves and Heusler Structures Illustrating a Mechanism for the Stabilization of Complex Intermetallics.

Journal of the American Chemical Society·2025
Same author

Nanoscale View of Alignment and Domain Growth in a Hexagonal Columnar Liquid Crystal.

ACS nano·2024

Related Experiment Video

Updated: Feb 3, 2026

Establishment of a Segmental Femoral Critical-size Defect Model in Mice Stabilized by Plate Osteosynthesis
06:38

Establishment of a Segmental Femoral Critical-size Defect Model in Mice Stabilized by Plate Osteosynthesis

Published on: October 12, 2016

10.5K

Paths to Stabilizing Electronically Aberrant Compounds: A Defect-Stabilized Polymorph and Constrained Atomic Motion

Hillary E Mitchell Warden1, Paul M Voyles2, Daniel C Fredrickson1

  • 1Department of Chemistry , University of Wisconsin-Madison , 1101 University Avenue , Madison , Wisconsin 53706 , United States.

Inorganic Chemistry
|October 19, 2018
PubMed
Summary

The study reveals PtGa2

More Related Videos

Quantitative Atomic-Site Analysis of Functional Dopants/Point Defects in Crystalline Materials by Electron-Channeling-Enhanced Microanalysis
07:24

Quantitative Atomic-Site Analysis of Functional Dopants/Point Defects in Crystalline Materials by Electron-Channeling-Enhanced Microanalysis

Published on: May 10, 2021

6.8K
A Reliable and Reproducible Critical-Sized Segmental Femoral Defect Model in Rats Stabilized with a Custom External Fixator
08:20

A Reliable and Reproducible Critical-Sized Segmental Femoral Defect Model in Rats Stabilized with a Custom External Fixator

Published on: March 24, 2019

9.3K

Related Experiment Videos

Last Updated: Feb 3, 2026

Establishment of a Segmental Femoral Critical-size Defect Model in Mice Stabilized by Plate Osteosynthesis
06:38

Establishment of a Segmental Femoral Critical-size Defect Model in Mice Stabilized by Plate Osteosynthesis

Published on: October 12, 2016

10.5K
Quantitative Atomic-Site Analysis of Functional Dopants/Point Defects in Crystalline Materials by Electron-Channeling-Enhanced Microanalysis
07:24

Quantitative Atomic-Site Analysis of Functional Dopants/Point Defects in Crystalline Materials by Electron-Channeling-Enhanced Microanalysis

Published on: May 10, 2021

6.8K
A Reliable and Reproducible Critical-Sized Segmental Femoral Defect Model in Rats Stabilized with a Custom External Fixator
08:20

A Reliable and Reproducible Critical-Sized Segmental Femoral Defect Model in Rats Stabilized with a Custom External Fixator

Published on: March 24, 2019

9.3K

Area of Science:

  • Materials Science
  • Solid-State Chemistry
  • Computational Materials Science

Background:

  • Intermetallic phase structures and properties are linked to electron counts.
  • PtGa2 exhibits two polymorphs: cubic (c-PtGa2) and tetragonal (t-PtGa2).
  • The tetragonal phase aligns with the 18-n electron counting rule.

Purpose of the Study:

  • Investigate the factors driving PtGa2 polymorphism.
  • Understand the electronic and structural driving forces for phase transitions.
  • Explore the influence of composition and temperature on PtGa2 polymorph stability.

Main Methods:

  • Electronic structure calculations.
  • Density Functional Theory (DFT) chemical pressure (CP) analysis.
  • Experimental synthesis of PtGa2 samples with varying Pt:Ga ratios.

Main Results:

  • The transition to t-PtGa2 creates a pseudogap at the Fermi energy due to Pt-Pt bond formation.
  • DFT-CP analysis identified positive local pressures along Pt-Ga contacts, necessitating concerted atomic motions for the transition.
  • Ga-poor samples favor c-PtGa2 due to interstitial Pt incorporation.
  • Ga-rich compositions stabilize t-PtGa2 at low temperatures.
  • The t-PtGa2 to c-PtGa2 transition is reversible with significant hysteresis (>100 °C).

Conclusions:

  • Interstitial atoms and positive CPs stabilize the c-PtGa2 phase at unfavorable electron counts.
  • These factors restrict atomic motion, influencing the observed polymorphism.
  • Findings suggest strategies for designing intermetallic materials with exotic electronic structures.