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Related Concept Videos

NMR Spectrometers: Overview01:20

NMR Spectrometers: Overview

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NMR spectrometers consist of a strong magnet, a radiofrequency transmitter, and a detector attached to a computer console for recording spectra of samples containing NMR-active nuclei. In first-generation NMR instruments called continuous-wave spectrometers, the resonance frequencies of the nuclei are determined by frequency-sweep or field-sweep methods. The magnetic field strength is fixed and the rf signal is swept in the former, while the radiofrequency signal is fixed and the magnetic field...
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NMR Spectrometers: Resolution and Error Correction01:14

NMR Spectrometers: Resolution and Error Correction

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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...
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Raman Spectroscopy Instrumentation: Overview01:26

Raman Spectroscopy Instrumentation: Overview

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A conventional Raman spectrophotometer includes a laser source, a sample holding system, a wavelength selector, and a detector.
The monochromatic laser source, typically using visible or near-infrared radiation, generates a highly focused beam of light. This light interacts with the molecules of the sample, scattering some of the light. Liquid and gaseous samples are usually tested in ordinary glass capillaries, while solids can be analyzed as powders packed in capillaries or as potassium...
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¹H NMR: Interpreting Distorted and Overlapping Signals01:02

¹H NMR: Interpreting Distorted and Overlapping Signals

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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...
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Mass Spectrometers01:16

Mass Spectrometers

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This lesson details the instrumentation of a mass spectrometer—a physical instrument to perform mass spectrometry on analyte molecules and record the characteristic mass spectra. This is achieved via three chief functions:
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¹H NMR of Conformationally Flexible Molecules: Temporal Resolution00:52

¹H NMR of Conformationally Flexible Molecules: Temporal Resolution

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At room temperature, the chair conformer of cyclohexane undergoes rapid ring flipping between two equivalent chair conformers at a rate of approximately 105 times per second. These two chair conformers are in equilibrium. The rapid ring flipping results in the interconversion of the axial proton to an equatorial proton and an equatorial to the axial proton. Such interconversions are too rapid and cannot be detected on the NMR timescale. Hence, the NMR spectrometer cannot distinguish between the...
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Related Experiment Video

Updated: Jun 22, 2025

Dissecting Mechanoenzymatic Properties of Processive Myosins with Ultrafast Force-Clamp Spectroscopy
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Ringing spectroscopy in the magnomechanical system.

Guan-Ting Xu1,2, Mai Zhang1,2, Zheng-Yu Wang1,2

  • 1Key Laboratory of Quantum Information, Chinese Academy of Sciences, University of Science and Technology of China, Hefei, Anhui 230026, China.

Fundamental Research
|June 27, 2024
PubMed
Summary

Scientists observed the ringing phenomenon in magnomechanical systems for the first time, using it to measure magnon-phonon coupling and develop new sensing techniques.

Keywords:
Magnomechanical systemMicrocavityRinging phenomenonRinging-up spectroscopyWhispering gallery mode

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Area of Science:

  • Physics
  • Quantum Optics
  • Condensed Matter Physics

Background:

  • The ringing phenomenon, previously studied in optical whispering gallery mode (WGM) resonators, is a valuable tool for ultrafast process spectroscopy.
  • Magnomechanical systems, which couple magnetic (magnon) and mechanical (phonon) excitations, offer a novel platform for exploring quantum phenomena.

Purpose of the Study:

  • To observe and characterize the ringing phenomenon in a magnomechanical system for the first time.
  • To utilize the ringing phenomenon for measuring magnon-phonon coupling strength and mapping mechanical mode profiles.
  • To develop a new spectroscopic technique, ring-up spectroscopy, for fast sensing applications.

Main Methods:

  • Observation of the ringing phenomenon induced by the interference between microwave photons derived from damped phonons and probing microwave photons.
  • Analysis of the microwave reflection spectrum, noting the appearance of a transparency window alongside the ringing phenomenon.
  • Utilizing ringing spectroscopy to quantify the coupling strength between magnon and phonon modes in a YIG microsphere.
  • Developing ring-up spectroscopy for enhanced sensing capabilities.

Main Results:

  • The first observation of the ringing phenomenon in a magnomechanical system.
  • Demonstration that the ringing phenomenon is influenced by scanning speed and input power.
  • Successful measurement of the coupling strength between magnon and phonon modes.
  • Outlining the displacement profile of a mechanical mode in a YIG microsphere.
  • Development of ring-up spectroscopy, a novel technique for fast sensing.

Conclusions:

  • The ringing phenomenon can be effectively observed and utilized in magnomechanical systems.
  • Ringing spectroscopy provides a method for characterizing magnomechanical interactions and mechanical properties.
  • Ring-up spectroscopy offers a promising foundation for developing advanced, fast-sensing technologies based on mechanical motion.