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
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.
Overview
The claims and statistics of this paper haven’t been checked yet.
Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.
Integrity signals
Registry
Cites
Statistics
Verification
Claims the paper makes
The claims and statistics of this paper haven’t been checked yet.
Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.
Self-check
Percentages, sums and reported differences re-computed from the paper’s own numbers.
The self-check needs the paper’s full text.
Citations
Cites
Irreversibility and Generalized Noise
Callen, H. B., & Welton, T. A. (1951) · Physical Review · doi:10.1103/physrev.83.34 · Cited by 3,051
Pine, D. J., Weitz, D. A., Chaikin, P. M., & Herbolzheimer, E. (1988) · Physical Review Letters · doi:10.1103/physrevlett.60.1134 · Cited by 1,162
Quantum Chaos: An Introduction
Stöckmann, H.-J. (1999) · Cambridge University Press eBooks · doi:10.1017/cbo9780511524622 · Cited by 959
Introduction to Mesoscopic Physics
Imry, Y. (1997) · doi:10.1093/oso/9780195101676.001.0001 · Cited by 777
Directions in Condensed Matter Physics: Memorial Volume in Honor of Shang-Keng Ma
Grinstein, G., & Mazenko, G. (1986) · Series on Directions in Condensed Matter Physics · doi:10.1142/0170 · Cited by 743
Spectrum and Eigenfunctions for a Hamiltonian with Stochastic Trajectories
McDonald, S. W., & Kaufman, A. N. (1979) · Physical Review Letters · doi:10.1103/physrevlett.42.1189 · Cited by 603
Observation of Equipartition of Seismic Waves
Hennino, R., Trégourès, N., Shapiro, N. M., Margerin, L., Campillo, M., van Tiggelen, B. A., & Weaver, R. L. (2001) · Physical Review Letters · doi:10.1103/physrevlett.86.3447 · Cited by 224
Self-citationStudy of Phonon Dispersion in Silicon and Germanium at Long Wavelengths Using Picosecond Ultrasonics
Hao, H.-Y., & Maris, H. J. (2000) · Physical Review Letters · doi:10.1103/physrevlett.84.5556 · Cited by 79
Cited by
Brain palpation from physiological vibrations using MRI
Zorgani, A., Souchon, R., Dinh, A.-H., Chapelon, J.-Y., Ménager, J.-M., Lounis, S., Rouvière, O., & Catheline, S. (2015) · Proceedings of the National Academy of Sciences · doi:10.1073/pnas.1509895112 · Cited by 69
Metadata
- Authors
- Weaver, R. L., & Lobkis, O. I.
- Venue
- Physical Review Letters
- Publisher
- American Physical Society (APS)
- 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
About these checks
Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.
Statistics and arithmetic are recomputed, not judged.
Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.
What counts as a claim ›How we measure confidence ›How we check this ›
Are you an author, or do you see a problem with this page? Request a review
How to cite
Cite CoChat for the checks on this page, and the paper for its own findings.
- This page
- 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
Data sources
Bibliographic data: Semantic Scholar, OpenAlex, Crossref.
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.