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Cited by 668

The DOI matches its Crossref record; 8 of the 8 references it cites were found in a registry or an index.

Ultrasonics without a Source: Thermal Fluctuation Correlations at MHz Frequencies

Weaver, Richard L., Lobkis, Oleg I.·2001·Physical Review Letters

Abstract

Noise generated in an ultrasonic receiver circuit consisting of transducer and amplifier is usually ignored, or treated as a nuisance. Here it is argued that acoustic thermal fluctuations, with displacement amplitudes of 3 fm, contain substantial ultrasonic information. It is shown that the noise autocorrelation function is the waveform that would be obtained in a direct pulse/echo measurement. That thesis is demonstrated in experiments in which direct measurements are compared to correlation functions. The thermal nature of the elastodynamic noise that generates these correlations is confirmed by an absolute measurement of their strength, essentially a measurement of the sample temperature.

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Crossref · 10.1103/physrevlett.87.134301

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Metadata

Authors
Weaver, R. L., & Lobkis, O. I.
Venue
Physical Review Letters
Published
2001-09-07
Volume
87
Issue
13
Pages
134301-134301
ISSN
  • 0031-9007 (ISSN-L)
  • 1079-7114
OpenAlex
W2074604051
Cited by
668
References
8
FWCI
11.91
Type
journal article
Language
en
Open access
closed

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CoChat. (2026). Citation check: Ultrasonics without a Source: Thermal Fluctuation Correlations at MHz Frequencies. https://app.cochat.ai/papers/10.1103/physrevlett.87.134301
The paper
Weaver, R. L., & Lobkis, O. I. (2001). Ultrasonics without a Source: Thermal Fluctuation Correlations at MHz Frequencies. Physical Review Letters. https://doi.org/10.1103/physrevlett.87.134301

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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).

Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.