Search research articles

ABOUT JoVE

Overview Leadership Blog JoVE Help Center

AUTHORS

Publishing Process Editorial Board Scope & Policies Peer Review FAQ Submit

LIBRARIANS

Testimonials Subscriptions Access Resources Library Advisory Board FAQ

RESEARCH

JoVE Journal Methods Collections JoVE Encyclopedia of Experiments Archive

EDUCATION

JoVE Core JoVE Business JoVE Science Education JoVE Lab Manual Faculty Resource Center Faculty Site

Terms & Conditions of Use

Related Concept Videos

Resonance

Resonance

The Lewis structure of a nitrite anion (NO2−) may actually be drawn in two different ways, distinguished by the locations of the N-O and N=O bonds.

Band Theory

Band Theory

When two or more atoms come together to form a molecule, their atomic orbitals combine and molecular orbitals of distinct energies result. In a solid, there are a large number of atoms, and therefore a large number of atomic orbitals that may be combined into molecular orbitals. These groups of molecular orbitals are so closely placed together to form continuous regions of energies, known as the bands.
The energy difference between these bands is known as the band gap.
Conductor, Semiconductor,...

Electron Paramagnetic Resonance (EPR) Spectroscopy: Organic Radicals

Electron Paramagnetic Resonance (EPR) Spectroscopy: Organic Radicals

Ideally, an unpaired electron shows a single peak in the EPR spectrum due to the transition between the two spin energy states. However, coupling interactions can occur between the spins of the unpaired electron and any neighboring spin-active nuclei. This hyperfine coupling results in hyperfine splitting, where the EPR signal is split into multiplets. The signals split into 2nI + 1 peaks, where n is the number of equivalent nuclei and I is the nuclear spin. These splitting patterns provide...

Series Resonance

Series Resonance

The RLC circuit impedance is defined as the ratio of the supply voltage to the circuit current. Resonance in such a circuit occurs when the imaginary part of this impedance equals zero. This specific condition means that the inductive reactance is exactly equal to the capacitive reactance. The frequency at which this happens is known as the resonant frequency. Mathematically, the resonant frequency is inversely proportional to the square root of the product of the inductance (L) and capacitance...

Parallel Resonance

Parallel Resonance

The parallel RLC circuit is an arrangement where the resistor (R), inductor (L), and capacitor (C) are all connected to the same nodes and, as a result, share the same voltage across them. The parallel RLC circuit is analyzed in terms of admittance (Y), which reflects the ease with which current can flow. The admittance is given by:

Sound Waves: Resonance

Sound Waves: Resonance

Resonance is produced depending on the boundary conditions imposed on a wave. Resonance can be produced in a string under tension with symmetrical boundary conditions (i.e., has a node at each end). A node is defined as a fixed point where the string does not move. The symmetrical boundary conditions result in some frequencies resonating and producing standing waves, while other frequencies interfere destructively. Sound waves can resonate in a hollow tube, and the frequencies of the sound...

You might also read

Related Articles

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

Sort by

Same author

Exploring the dynamics and structure of PpiB in living Escherichia coli cells using electron paramagnetic resonance spectroscopy.

Protein science : a publication of the Protein Society·2024

Same author

The decay of the refocused Hahn echo in double electron-electron resonance (DEER) experiments.

Magnetic resonance (Gottingen, Germany)·2023

Same author

High-sensitivity Gd<sup>3+</sup>-Gd<sup>3+</sup> EPR distance measurements that eliminate artefacts seen at short distances.

Magnetic resonance (Gottingen, Germany)·2023

Same author

Site-selective generation of lanthanoid binding sites on proteins using 4-fluoro-2,6-dicyanopyridine.

Magnetic resonance (Gottingen, Germany)·2023

Same author

Study of electron spectral diffusion process under DNP conditions by ELDOR spectroscopy focusing on the <sup>14</sup>N solid effect.

Magnetic resonance (Gottingen, Germany)·2023

Same author

Gd<sup>III</sup> -<sup>19</sup> F Distance Measurements for Proteins in Cells by Electron-Nuclear Double Resonance.

Angewandte Chemie (International ed. in English)·2023

Search research articles

Related Experiment Video

Updated: Feb 16, 2026

Electron Spin Resonance Micro-imaging of Live Species for Oxygen Mapping

Electron Spin Resonance Micro-imaging of Live Species for Oxygen Mapping

Published on: August 26, 2010

Surface loop-gap resonators for electron spin resonance at W-band.

Ygal Twig¹, Anton Sorkin¹, David Cristea¹

¹Schulich Faculty of Chemistry, Technion-Israel Institute of Technology, Haifa 32000, Israel.

The Review of Scientific Instruments

|January 1, 2018

Summary

This study introduces miniature resonators for electron spin resonance (ESR) spectroscopy, significantly boosting sensitivity and spectral resolution at higher magnetic fields (95 GHz W-band). These advancements enable more detailed analysis of paramagnetic materials.

More Related Videos

Fabrication of Nanopillar-Based Split Ring Resonators for Displacement Current Mediated Resonances in Terahertz Metamaterials

Fabrication of Nanopillar-Based Split Ring Resonators for Displacement Current Mediated Resonances in Terahertz Metamaterials

Published on: March 23, 2017

Exploring the Radical Nature of a Carbon Surface by Electron Paramagnetic Resonance and a Calibrated Gas Flow

Exploring the Radical Nature of a Carbon Surface by Electron Paramagnetic Resonance and a Calibrated Gas Flow

Published on: April 24, 2014

Related Experiment Videos

Last Updated: Feb 16, 2026

Electron Spin Resonance Micro-imaging of Live Species for Oxygen Mapping

Electron Spin Resonance Micro-imaging of Live Species for Oxygen Mapping

Published on: August 26, 2010

Fabrication of Nanopillar-Based Split Ring Resonators for Displacement Current Mediated Resonances in Terahertz Metamaterials

Fabrication of Nanopillar-Based Split Ring Resonators for Displacement Current Mediated Resonances in Terahertz Metamaterials

Published on: March 23, 2017

Exploring the Radical Nature of a Carbon Surface by Electron Paramagnetic Resonance and a Calibrated Gas Flow

Exploring the Radical Nature of a Carbon Surface by Electron Paramagnetic Resonance and a Calibrated Gas Flow

Published on: April 24, 2014

Area of Science:

Spectroscopy
Materials Science
Physics

Background:

Electron spin resonance (ESR) spectroscopy detects paramagnetic materials using magnetic fields and microwave radiation.
ESR sensitivity depends on static magnetic field strength and microwave resonator properties.
Previous high-sensitivity ESR research focused on small resonators at moderate fields (up to 35 GHz).

Purpose of the Study:

To design, construct, and test miniature surface loop-gap resonators for high-frequency (95 GHz W-band) ESR.
To enhance ESR sensitivity and spectral resolution through higher static magnetic fields.
To provide a detailed description of the resonator design, coupling, probe head, and production methods.

Main Methods:

Development of miniature surface loop-gap resonators for 95 GHz operation.
Integration of resonators into a probe head for a high-frequency ESR system.
Testing of the system's spin sensitivity and comparison with theoretical predictions.

Main Results:

Successful design, construction, and testing of miniature W-band (95 GHz) loop-gap resonators.
Demonstrated high spin sensitivity of the developed ESR system.
Preliminary experimental results align with theoretical predictions for enhanced sensitivity.

Conclusions:

Miniature W-band resonators significantly enhance ESR sensitivity and spectral resolution.
The developed system offers improved capabilities for studying paramagnetic materials.
This work advances high-frequency ESR technology for detailed structural and positional analysis.