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

Chromatographic Resolution01:15

Chromatographic Resolution

2.2K
In chromatography, a solute moves through a chromatographic column and tends to spread, forming a Gaussian-shaped band. The longer the solute spends in the column, the broader the band becomes. The broadening can lead to overlaps within the column, affecting separation effectiveness.
The effectiveness of separation can be evaluated by determining the level of separation between two neighboring peaks in a chromatogram, which represents the individual components of a sample.
In chromatography,...
2.2K
Super-resolution Fluorescence Microscopy01:37

Super-resolution Fluorescence Microscopy

14.6K
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...
14.6K
Racemic Mixtures and the Resolution of Enantiomers02:30

Racemic Mixtures and the Resolution of Enantiomers

21.8K
A racemic mixture, or racemate, is an equimolar mixture of enantiomers of a molecule that can be separated using their unique interaction with chiral molecules or media. Racemic mixtures are denoted by the (±)- prefix. This ‘optical rotation descriptor’ applies to the whole solution of a racemic mixture rather than a specific stereoisomer. Enantiomers typically have the same physical and chemical properties. Hence, they are not easily separable. However, enantiomers can exhibit...
21.8K
High-Resolution Mass Spectrometry (HRMS)01:15

High-Resolution Mass Spectrometry (HRMS)

2.6K
The resolution of a mass spectrometer depends on the efficiency of separating ions with different ion masses. The mass of an atom is approximated to the sum of the masses of protons and neutrons inside, considering the masses of protons and neutrons as equal. However, the masses of the proton (1.6726 × 10−24 g) and neutron (1.6749 × 10−24 g) are not truly equal. There is a minor error in the expression of atomic masses relative to the simplest atom of hydrogen. For...
2.6K
¹H NMR of Labile Protons: Temporal Resolution01:10

¹H NMR of Labile Protons: Temporal Resolution

1.7K
Protons bonded to heteroatoms such as nitrogen and oxygen exhibit a range of chemical shift values. This is due to the varying degree of hydrogen bonding between the proton and the heteroatom in other molecules. The extent of hydrogen bonding affects the electron density around the proton, thereby giving different chemical shift values for the protons in the proton NMR spectrum.
The –OH proton in alcohols typically appears in the range of δ 2 to 5 ppm but can vary depending on the specific...
1.7K
NMR Spectrometers: Resolution and Error Correction01:14

NMR Spectrometers: Resolution and Error Correction

1.1K
When magnetic nuclei in a sample achieve resonance and undergo relaxation, the signal detected in NMR is an approximately exponential free induction decay. Fourier transform of an exponential decay yields a Lorentzian peak in the frequency domain. Lorentzian peaks in an NMR spectrum are defined by their amplitude, full width at half maximum, and position, where the peak width is governed by the spin-spin relaxation time alone. In real experiments, however, the applied magnetic field is rendered...
1.1K

You might also read

Related Articles

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

Sort by
Same author

Correction: High-risk HPV and bacterial STIs in a primary screening population in rural Hainan, China: prevalence, co-infection, and association with cervical abnormalities.

Frontiers in public health·2026
Same author

Case Report: An imported severe case of paediatric scrub typhus with Karp B subgenotype in non-endemic Northern China, Beijing.

Frontiers in pediatrics·2026
Same author

Cytokine and chemokine profiles linked to early severity of scrub typhus: multicenter validation of soluble PD-L1.

Journal of clinical microbiology·2026
Same author

Phytic Acid/ADP Interfacial Assembly for Flame Retardancy and Self-Extinguishment in Cellulose Paper.

ACS omega·2026
Same author

Fusion of Multi-Paradigm EEG Microstate Features to Enhance the Recognition of Mild Cognitive Impairment.

Brain and behavior·2026
Same author

Molnupiravir is effective against hepatitis E virus infection in an animal model.

Hepatology communications·2026

Related Experiment Video

Updated: Feb 11, 2026

Author Spotlight: A Rapid, Microwave-Assisted Hydrothermal Synthesis Of Nickel Hydroxide Nanosheets
07:57

Author Spotlight: A Rapid, Microwave-Assisted Hydrothermal Synthesis Of Nickel Hydroxide Nanosheets

Published on: August 18, 2023

2.6K

Megahertz-resolution programmable microwave shaper.

Jilong Li, Yitang Dai, Feifei Yin

    Optics Letters
    |April 14, 2018
    PubMed
    Summary
    This summary is machine-generated.

    A new microwave shaper offers programmable control with high resolution by mapping optical signals. This technology significantly improves resolution and magnifies group delay for advanced microwave spectrum applications.

    More Related Videos

    Making Patch-pipettes and Sharp Electrodes with a Programmable Puller
    05:30

    Making Patch-pipettes and Sharp Electrodes with a Programmable Puller

    Published on: October 8, 2008

    25.9K
    Non-equilibrium Microwave Plasma for Efficient High Temperature Chemistry
    07:17

    Non-equilibrium Microwave Plasma for Efficient High Temperature Chemistry

    Published on: August 1, 2017

    13.2K

    Related Experiment Videos

    Last Updated: Feb 11, 2026

    Author Spotlight: A Rapid, Microwave-Assisted Hydrothermal Synthesis Of Nickel Hydroxide Nanosheets
    07:57

    Author Spotlight: A Rapid, Microwave-Assisted Hydrothermal Synthesis Of Nickel Hydroxide Nanosheets

    Published on: August 18, 2023

    2.6K
    Making Patch-pipettes and Sharp Electrodes with a Programmable Puller
    05:30

    Making Patch-pipettes and Sharp Electrodes with a Programmable Puller

    Published on: October 8, 2008

    25.9K
    Non-equilibrium Microwave Plasma for Efficient High Temperature Chemistry
    07:17

    Non-equilibrium Microwave Plasma for Efficient High Temperature Chemistry

    Published on: August 1, 2017

    13.2K

    Area of Science:

    • Electrical Engineering
    • Optoelectronics
    • Microwave Engineering

    Background:

    • Programmable optical wave-shapers offer high resolution but are limited to optical frequencies.
    • Existing methods for mapping optical signals to microwave frequencies lack sufficient resolution and control.

    Purpose of the Study:

    • To propose and demonstrate a novel microwave shaper with a fully programmable spectral transfer function.
    • To achieve high-resolution microwave spectral shaping by mapping from a lower-resolution optical system.

    Main Methods:

    • Utilizing bandwidth-compressed mapping from a programmable optical wave-shaper to a microwave wave-shaper.
    • Employing a novel "bandwidth scaling" technology with bandwidth-stretched electro-optical conversion and bandwidth-compressed opto-electronic conversion.
    • Experimentally demonstrating high resolution and full reconfigurability.

    Main Results:

    • Achieved a microwave spectral resolution of tens of megahertz from an optical system with tens of gigahertz resolution.
    • Demonstrated full programmability and reconfigurability of the microwave spectral transfer function.
    • Experimentally verified a group delay variation enlargement of 194 times after mapping.

    Conclusions:

    • The proposed microwave shaper offers unprecedented resolution and programmability for microwave spectrum control.
    • The "bandwidth scaling" technology enables significant improvements over previous optics-to-microwave spectrum mapping techniques.
    • This advancement has potential applications in advanced microwave systems requiring precise spectral manipulation.