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

Displacement Current01:19

Displacement Current

3.8K
Ampère's law, in its usual form, does not work in places where the current changes with time and is not steady. Thus, Maxwell suggested including an additional contribution, called the displacement current, Id, to the real conduction current I.
3.8K
Position and Displacement01:31

Position and Displacement

25.8K
The position of an object defines its location relative to a convenient frame of reference at any particular time. A frame of reference is an arbitrary set of axes from which the position and motion of an object are described. Earth is often used as a frame of reference, and we often describe the position of an object as it relates to stationary objects on Earth. For example, a rocket launch could be described in terms of the position of the rocket with respect to Earth as a whole. On the other...
25.8K
Ionic Crystal Structures02:42

Ionic Crystal Structures

17.0K
Ionic crystals consist of two or more different kinds of ions that usually have different sizes. The packing of these ions into a crystal structure is more complex than the packing of metal atoms that are the same size.
Most monatomic ions behave as charged spheres, and their attraction for ions of opposite charge is the same in every direction. Consequently, stable structures for ionic compounds result (1) when ions of one charge are surrounded by as many ions as possible of the opposite...
17.0K
Position and Displacement Vectors01:00

Position and Displacement Vectors

12.9K
To describe the motion of an object, one should first be able to describe its position (where it is at any particular time). More precisely, the position needs to be specified relative to a convenient frame of reference. A frame of reference is an arbitrary set of axes from which the position and motion of an object are described. Earth is often used as a frame of reference to describe the position of an object in relation to stationary objects on Earth.
Further, several important kinds of...
12.9K
Crystal Field Theory - Octahedral Complexes02:58

Crystal Field Theory - Octahedral Complexes

30.8K
Crystal Field Theory
To explain the observed behavior of transition metal complexes (such as colors), a model involving electrostatic interactions between the electrons from the ligands and the electrons in the unhybridized d orbitals of the central metal atom has been developed. This electrostatic model is crystal field theory (CFT). It helps to understand, interpret, and predict the colors, magnetic behavior, and some structures of coordination compounds of transition metals.
CFT focuses on...
30.8K
Significance of Displacement Current01:27

Significance of Displacement Current

5.9K
A displacement current is analogous to a real current in Ampère's law, participating in Ampère's law the same way as the usual conduction current. However, it is produced by a changing electric field. Displacement current is defined in terms of a time-varying electric field, and also has an associated displacement current density. By adding a term accounting for displacement current, Maxwell modified the existing Ampère's law, which is now called generalized Ampère's law.
5.9K

You might also read

Related Articles

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

Sort by
Same author

Clioquinol inactivates thiamine pyrophosphate by increasing cellular oxidative stress.

Redox biology·2026
Same author

Fluoroacetonitrile‑Based Gel Polymer Electrolytes for Fast‑Charging Lithium Metal Batteries.

Advanced science (Weinheim, Baden-Wurttemberg, Germany)·2026
Same author

Soil organic carbon in arid and humid grasslands of China: Spatial heterogeneity, driving factors, and future changes.

The Science of the total environment·2026
Same author

Alternative splicing in voltage-gated sodium channels: mechanisms, regulatory networks and therapeutic implications.

Annals of medicine·2026
Same author

Palladium-Catalyzed Cascade Reaction of Indoles with α,α-Difluoro-β,γ-Unsaturated Ketones: One-Step Access to 2-Fluorocarbazoles.

Organic letters·2026
Same author

Nitrogen input drives carbon flow in desert ecosystems: mechanisms of photosynthetic carbon allocation response to nitrogen deposition.

Oecologia·2026
Same journal

Multifunctional reconfigurable terahertz metasurface based on vanadium dioxide phase transition: achieving broadband absorption and efficient polarization conversion.

Applied optics·2026
Same journal

High-Q-factor electromagnetically induced transparency utilizing quasi-bound states in the continuum in an all-dielectric terahertz metasurface.

Applied optics·2026
Same journal

Automated stitching interferometry for high-precision metrology of X-ray mirrors.

Applied optics·2026
Same journal

Experimental demonstration of an approach to designing a metal-dielectric DBR resonant cavity structure.

Applied optics·2026
Same journal

High-precision wavefront reconstruction from a single-shot interferogram using a physics-driven hybrid feature calibration network.

Applied optics·2026
Same journal

Ultra-high-Q Fano resonance based on coupled topological corner states in Kagome photonic crystals.

Applied optics·2026
See all related articles

Related Experiment Video

Updated: Jan 30, 2026

Author Spotlight: Fabrication of a Low-Cost, Fiber-Coupled, and Air-Spaced Fabry-Pérot Etalon
07:22

Author Spotlight: Fabrication of a Low-Cost, Fiber-Coupled, and Air-Spaced Fabry-Pérot Etalon

Published on: February 3, 2023

8.3K

Liquid-crystal based Fabry-Perot interferometer displacement sensor.

Boyi Song, Jianyang Hu, Chunli Xia

    Applied Optics
    |January 16, 2019
    PubMed
    Summary
    This summary is machine-generated.

    A novel Fabry-Perot interferometer displacement sensor uses liquid crystals and a flexible hose for adjustable cavity length. This sensor achieves high sensitivity and a wide dynamic range for precise displacement measurements.

    More Related Videos

    Synthesis of Biocompatible Liquid Crystal Elastomer Foams as Cell Scaffolds for 3D Spatial Cell Cultures
    13:38

    Synthesis of Biocompatible Liquid Crystal Elastomer Foams as Cell Scaffolds for 3D Spatial Cell Cultures

    Published on: April 11, 2017

    10.1K
    Preparation of Monodomain Liquid Crystal Elastomers and Liquid Crystal Elastomer Nanocomposites
    12:21

    Preparation of Monodomain Liquid Crystal Elastomers and Liquid Crystal Elastomer Nanocomposites

    Published on: February 6, 2016

    13.5K

    Related Experiment Videos

    Last Updated: Jan 30, 2026

    Author Spotlight: Fabrication of a Low-Cost, Fiber-Coupled, and Air-Spaced Fabry-Pérot Etalon
    07:22

    Author Spotlight: Fabrication of a Low-Cost, Fiber-Coupled, and Air-Spaced Fabry-Pérot Etalon

    Published on: February 3, 2023

    8.3K
    Synthesis of Biocompatible Liquid Crystal Elastomer Foams as Cell Scaffolds for 3D Spatial Cell Cultures
    13:38

    Synthesis of Biocompatible Liquid Crystal Elastomer Foams as Cell Scaffolds for 3D Spatial Cell Cultures

    Published on: April 11, 2017

    10.1K
    Preparation of Monodomain Liquid Crystal Elastomers and Liquid Crystal Elastomer Nanocomposites
    12:21

    Preparation of Monodomain Liquid Crystal Elastomers and Liquid Crystal Elastomer Nanocomposites

    Published on: February 6, 2016

    13.5K

    Area of Science:

    • Optoelectronics
    • Materials Science
    • Sensor Technology

    Background:

    • Fabry-Perot interferometers are widely used for optical sensing.
    • Liquid crystals offer unique optical properties exploitable in sensor design.
    • Developing compact and sensitive displacement sensors is crucial for various applications.

    Purpose of the Study:

    • To propose and demonstrate a novel Fabry-Perot interferometer displacement sensor.
    • To leverage the Vernier effect induced by liquid crystals for enhanced sensitivity.
    • To create a sensor with an adjustable cavity length using a flexible material.

    Main Methods:

    • Fabrication of a Fabry-Perot cavity using ceramic ferrules within a polydimethylsiloxane (PDMS) hose.
    • Filling the cavity with nematic liquid crystals (NLCs) to induce birefringence and the Vernier effect.
    • Experimental characterization of the sensor's sensitivity and dynamic range at a 1550 nm wavelength.

    Main Results:

    • Successful demonstration of a Fabry-Perot interferometer displacement sensor.
    • Observation of the Vernier effect due to NLC birefringence enhancing sensor performance.
    • Achieved a sensitivity of approximately 2.97 nm/μm.
    • Demonstrated a dynamic range of 0.9 mm.

    Conclusions:

    • The proposed sensor design effectively utilizes NLCs and a flexible PDMS hose for displacement sensing.
    • The Vernier effect significantly contributes to the sensor's high sensitivity.
    • The demonstrated sensor shows promise for precise and adaptable displacement measurement applications.