Evidence map›Paper›PMID 41613974›Full record

ArticleMagnetic resonance letters2025

Femtotesla atomic magnetometer for zero- and ultralow-field nuclear magnetic resonance.

Taizhou Hong, Yuanhong Wang, Zhenhan Shao, Qing Li, Min Jiang, Xinhua Peng

Abstract read
PubMed Full text at PMC Publisher
In one paragraph

Article in Magnetic resonance letters, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.

0numbers the graph read from it
0cells of the map it votes in
2citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

2 citing papers in PubMed.

  1. Article
  2. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

6 authors.

Taizhou HongCAS Key Laboratory of Microscale Magnetic Resonance and School of Physical Sciences, University of Science and Technology of China, Hefei, 230026, China.
Yuanhong WangCAS Key Laboratory of Microscale Magnetic Resonance and School of Physical Sciences, University of Science and Technology of China, Hefei, 230026, China.
Zhenhan ShaoCAS Key Laboratory of Microscale Magnetic Resonance and School of Physical Sciences, University of Science and Technology of China, Hefei, 230026, China.
Qing LiCAS Key Laboratory of Microscale Magnetic Resonance and School of Physical Sciences, University of Science and Technology of China, Hefei, 230026, China.
Min JiangCAS Key Laboratory of Microscale Magnetic Resonance and School of Physical Sciences, University of Science and Technology of China, Hefei, 230026, China.
Xinhua PengCAS Key Laboratory of Microscale Magnetic Resonance and School of Physical Sciences, University of Science and Technology of China, Hefei, 230026, China.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Zero- and ultralow-field nuclear magnetic resonance (ZULF NMR) has experienced rapid development and provides an excellent tool for diverse research fields ranging from materials science and quantum information processing to fundamental physics. The detection of ZULF NMR signals in samples with natural abundance remains a challenging endeavor, due to the limited sensitivity of NMR detectors and thermal polarization. In this work, we demonstrate a femtotesla (fT) Potassium spin-exchange relaxation-free (SERF) magnetometer designed for ZULF NMR detection. A Potassium vapor cell with high buffer gas pressure and high atomic number density is used in the magnetometer. With absorption spectroscopy and SERF effect, the key parameters of the vapor cell are characterized and applied to optimize the magnetometer sensitivity. To combine our SERF magnetometer and ZULF NMR detection, a custom-made vacuum chamber is employed to keep NMR sample close to the magnetometer cell and protect the sample from undesired heating effects. Gradiometric measurement is performed to greatly reduce the magnetic noise. With the phase calibration applied, the gradiometric measurement achieves 7-fold enhancement in magnetic-field sensitivity compared to the single channel and has a magnetic noise floor of 1.2 fT/Hz

Indexed as

Atomic magnetometerGradient measurementSpin-exchange relaxation free effectZero-to ultralow-field nuclear magnetic resonance

Identifiers

PMID41613974
PMCPMC12848260

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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.