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

Double Resonance Techniques: Overview01:12

Double Resonance Techniques: Overview

870
Double resonance techniques in Nuclear Magnetic Resonance (NMR) spectroscopy involve the simultaneous application of two different frequencies or radiofrequency pulses to manipulate and observe two distinct nuclear spins. One important application of double resonance is spin decoupling, which selectively suppresses coupling with one type of nucleus while observing the NMR signal from another nucleus, simplifying the spectrum and enhancing resolution.
Spin decoupling is usually achieved by...
870
¹³C NMR: ¹H–¹³C Decoupling01:04

¹³C NMR: ¹H–¹³C Decoupling

1.7K
The probability of having two carbon-13 atoms next to each other is negligible because of the low natural abundance of carbon-13. Consequently, peak splitting due to carbon-carbon spin-spin coupling is not observed in spectra. However, protons up to three sigma bonds away split the carbon signal according to the n+1 rule, resulting in complicated spectra.
A broadband decoupling technique is used to simplify these complex, sometimes overlapping, signals. Broadband decoupling relies on a...
1.7K
Super-resolution Fluorescence Microscopy01:37

Super-resolution Fluorescence Microscopy

12.3K
Super-resolution fluorescence microscopy (SRFM) provides a better resolution than conventional fluorescence microscopy by reducing the point spread function (PSF). PSF is the light intensity distribution from a point that causes it to appear blurred. Due to PSF, each fluorescing point appears bigger than its actual size, and it is the PSF interference of nearby fluorophores that causes the blurred image. Various approaches to achieving higher resolution through SRFM have recently been...
12.3K
¹H NMR: Interpreting Distorted and Overlapping Signals01:02

¹H NMR: Interpreting Distorted and Overlapping Signals

1.3K
Spin systems where the difference in chemical shifts of the coupled nuclei is greater than ten times J are called first-order spin systems. These nuclei are weakly coupled, and their chemical shifts and coupling constant can generally be estimated from the well-separated signals in the spectrum.
As Δν decreases and the signals move closer, the doublets appear increasingly distorted. The intensities of the inner lines increase at the cost of those of the outer lines as the signals are...
1.3K

You might also read

Related Articles

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

Sort by
Same author

Lung-Targeted HGF mRNA Restores Alveolar Structure in Experimental Emphysema.

The European respiratory journal·2026
Same author

Development and validation of an echocardiographic nomogram for identifying cardiac amyloidosis in patients with left ventricular hypertrophy.

BMC cardiovascular disorders·2025
Same author

Digital holographic microscopy for rapid bacteria segmentation and counting in microfluidic cartridges: basic considerations and limitations for diagnostic application.

Journal of biomedical optics·2025
Same author

Knowledge, attitude and practice of pregnant women towards pre-eclampsia in Chongqing, China.

BMJ open·2025
Same author

Prognostic significance of left atrial volume index in patients with severe aortic stenosis after transcatheter aortic valve replacement.

Quantitative imaging in medicine and surgery·2025
Same author

Advancements and Challenges in Immune Protection Strategies for Islet Transplantation.

Journal of diabetes·2025
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: May 3, 2026

Measurement of Scattering Nonlinearities from a Single Plasmonic Nanoparticle
15:06

Measurement of Scattering Nonlinearities from a Single Plasmonic Nanoparticle

Published on: January 3, 2016

12.4K

Speckle suppression by doubly scattering systems.

Dayan Li, Damien P Kelly, John T Sheridan

    Applied Optics
    |February 12, 2014
    PubMed
    Summary
    This summary is machine-generated.

    Speckle suppression in rotating two-diffuser systems was analyzed. The grain size of the speckle field significantly impacts speckle contrast after averaging, with the slower diffuser dictating correlation periods.

    More Related Videos

    Live Cell Imaging of F-actin Dynamics via Fluorescent Speckle Microscopy FSM
    19:16

    Live Cell Imaging of F-actin Dynamics via Fluorescent Speckle Microscopy FSM

    Published on: August 5, 2009

    15.2K
    Scattering And Absorption of Light in Planetary Regoliths
    11:34

    Scattering And Absorption of Light in Planetary Regoliths

    Published on: July 1, 2019

    11.5K

    Related Experiment Videos

    Last Updated: May 3, 2026

    Measurement of Scattering Nonlinearities from a Single Plasmonic Nanoparticle
    15:06

    Measurement of Scattering Nonlinearities from a Single Plasmonic Nanoparticle

    Published on: January 3, 2016

    12.4K
    Live Cell Imaging of F-actin Dynamics via Fluorescent Speckle Microscopy FSM
    19:16

    Live Cell Imaging of F-actin Dynamics via Fluorescent Speckle Microscopy FSM

    Published on: August 5, 2009

    15.2K
    Scattering And Absorption of Light in Planetary Regoliths
    11:34

    Scattering And Absorption of Light in Planetary Regoliths

    Published on: July 1, 2019

    11.5K

    Area of Science:

    • Optics and Photonics
    • Statistical Optics

    Background:

    • Speckle patterns are inherent in coherent imaging systems.
    • Controlling speckle is crucial for applications like imaging and metrology.
    • Previous methods for speckle reduction have limitations.

    Purpose of the Study:

    • To statistically investigate speckle suppression in a two-diffuser system.
    • To derive an analytical expression for the speckle space-time correlation function.
    • To understand the influence of diffuser properties and motion on speckle reduction.

    Main Methods:

    • Derivation of the speckle space-time correlation function.
    • Analysis of speckle contrast dependence on grain size and temporal averaging.
    • Investigation of the effect of rotating diffusers with different speeds.
    • Numerical simulations and experimental verification.

    Main Results:

    • The grain size of the speckle field illuminating the second diffuser critically affects speckle contrast post-averaging.
    • In a rotating two-diffuser system, the slower diffuser's rotation speed governs the speckle correlation function's period.
    • The coherent length of the averaged speckle intensity equals the mean speckle size of the initial pattern.
    • Analysis was validated through numerical and experimental results.

    Conclusions:

    • The study provides a statistical framework for understanding speckle suppression in two-diffuser systems.
    • Optimizing diffuser properties and rotation speeds can enhance speckle reduction effectiveness.
    • The findings offer insights for designing improved speckle reduction techniques in optical systems.