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

Time and frequency -Domain Interpretation of Phase-lead Control01:24

Time and frequency -Domain Interpretation of Phase-lead Control

381
Phase-lead controllers are commonly used in various control systems to enhance response speed and stability. Adjusting the brightness on a television screen offers a practical example of phase-lead control. When contrast is enhanced, a phase-lead controller is employed. Mathematically, phase-lead control is identified when the first parameter is smaller than the second.
The design of phase-lead control involves the strategic placement of poles and zeros to balance steady-state error and system...
381
Propagation Speed of Electromagnetic Waves01:30

Propagation Speed of Electromagnetic Waves

4.5K
Electromagnetic waves are consistent with Ampere's law. Assuming there is no conduction current Ampere's law is given as:
4.5K
Properties of Fourier Transform II01:24

Properties of Fourier Transform II

615
The Fourier Transform (FT) is an essential mathematical tool in signal processing, transforming a time-domain signal into its frequency-domain representation. This transformation elucidates the relationship between time and frequency domains through several properties, each revealing unique aspects of signal behavior.
The Frequency Shifting property of Fourier Transforms highlights that a shift in the frequency domain corresponds to a phase shift in the time domain. Mathematically, if x(t) has...
615

You might also read

Related Articles

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

Sort by
Same author

Broadband second harmonic generation in potassium tantalate niobate crystals with "2T" engineered domain configurations.

Optics express·2025
Same author

Robust Dynamic Material Handling via Adaptive Constrained Evolutionary Reinforcement Learning.

IEEE transactions on neural networks and learning systems·2025
Same author

Deciphering the atomistic mechanism underlying highly tunable piezoelectric properties in perovskite ferroelectrics via transition metal doping.

Nature communications·2024
Same author

Home-based guidance training system with interactive visual feedback using kinect on stroke survivors with moderate to severe motor impairment.

Journal of neuroengineering and rehabilitation·2024
Same author

Effects of high-definition tDCS targeting individual motor hotspot with EMG-driven robotic hand training on upper extremity motor function: a pilot randomized controlled trial.

Journal of neuroengineering and rehabilitation·2024
Same author

Development and External Validation of a Motor Intention-Integrated Prediction Model for Upper Extremity Motor Recovery After Intention-Driven Robotic Hand Training for Chronic Stroke.

Archives of physical medicine and rehabilitation·2024

Related Experiment Video

Updated: Dec 21, 2025

Transmission of Multiple Signals through an Optical Fiber Using Wavefront Shaping
09:43

Transmission of Multiple Signals through an Optical Fiber Using Wavefront Shaping

Published on: March 20, 2017

10.2K

Super terahertz phase shifter achieving high transmission and large modulation depth.

Shuai Li, Jing Wang, Hao Tian

    Optics Letters
    |May 16, 2020
    PubMed
    Summary

    We developed an industrial liquid-crystal terahertz (THz) phase shifter achieving 360.5° phase shift and over 83% transmittance. This compact device offers high performance for THz applications.

    More Related Videos

    Shaping the Amplitude and Phase of Laser Beams by Using a Phase-only Spatial Light Modulator
    08:39

    Shaping the Amplitude and Phase of Laser Beams by Using a Phase-only Spatial Light Modulator

    Published on: January 28, 2019

    10.2K
    Generation and Coherent Control of Pulsed Quantum Frequency Combs
    06:42

    Generation and Coherent Control of Pulsed Quantum Frequency Combs

    Published on: June 8, 2018

    9.5K

    Related Experiment Videos

    Last Updated: Dec 21, 2025

    Transmission of Multiple Signals through an Optical Fiber Using Wavefront Shaping
    09:43

    Transmission of Multiple Signals through an Optical Fiber Using Wavefront Shaping

    Published on: March 20, 2017

    10.2K
    Shaping the Amplitude and Phase of Laser Beams by Using a Phase-only Spatial Light Modulator
    08:39

    Shaping the Amplitude and Phase of Laser Beams by Using a Phase-only Spatial Light Modulator

    Published on: January 28, 2019

    10.2K
    Generation and Coherent Control of Pulsed Quantum Frequency Combs
    06:42

    Generation and Coherent Control of Pulsed Quantum Frequency Combs

    Published on: June 8, 2018

    9.5K

    Area of Science:

    • Terahertz (THz) Technology
    • Materials Science
    • Optics and Photonics

    Background:

    • Terahertz (THz) technology requires efficient phase shifting components.
    • Liquid crystals (LCs) offer tunable optical properties for THz applications.
    • Existing THz phase shifters often face limitations in transmittance and bandwidth.

    Purpose of the Study:

    • To develop an industrial-grade liquid-crystal-based terahertz (THz) 2π-phase shifter.
    • To achieve predictable ultra-high amplitude transmittance and full phase modulation across a broad THz band.
    • To demonstrate the potential for integration into quasi-optical systems and THz phased arrays.

    Main Methods:

    • Utilizing the birefringence of liquid crystals (LCs) to achieve phase retardation.
    • Analyzing LC molecular dynamics to minimize THz wave scattering.
    • Fabricating a millimeter-thick phase shifter for broad THz band operation.

    Main Results:

    • Achieved a phase retardation of 360.5° at 1.68 THz.
    • Exhibited amplitude transmittance over 83% in the 0.3-1.5 THz range.
    • Attained over 91.5% transmittance, approaching the limit of quartz-based devices, by reducing scattering.

    Conclusions:

    • The proposed liquid-crystal THz phase shifter provides full phase modulation and ultra-high transmittance.
    • Its compact size and broad bandwidth make it suitable for integration into quasi-optical systems.
    • The device can function as a wave plate or a component in THz phased arrays.