Cited by 87Thermal properties of materialsThermography and Photoacoustic TechniquesUltrasonics and Acoustic Wave Propagation

Interpreting picosecond acoustics in the case of low interface stiffness

Hohensee, Gregory T., Hsieh, Wen-Pin, Losego, Mark D., Cahill, David G.·2012·Review of Scientific Instruments

Abstract

Analysis of data acquired in time-domain thermoreflectance (TDTR) experiments requires accurate measurements of the thickness of the metal film optical transducer that absorbs energy from the pump optical pulse and provides a temperature dependent reflectivity that is interrogated by the probe optical pulse. This thickness measurement is typically accomplished using picosecond acoustics. The presence of contaminants and native oxides at the interface between the sample and transducer often produce a picosecond acoustics signal that is difficult to interpret. We describe heuristics for addressing this common difficulty in interpreting picosecond acoustic data. The use of these heuristics can reduce the propagation of uncertainties and improve the accuracy of TDTR measurements of thermal transport properties.

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Crossref · 10.1063/1.4766957

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Authors
Hohensee, G. T., Hsieh, W.-P., Losego, M. D., & Cahill, D. G.
Affiliations
  • University of Illinois Urbana-Champaign (US)
  • North Carolina State University (US)
Venue
Review of Scientific Instruments
Published
2012-11-01
Volume
83
Issue
11
Pages
114902-114902
ISSN
  • 0034-6748 (ISSN-L)
  • 1089-7623
OpenAlex
W1975492637
Cited by
87
References
14
Citations by year
2026: 8 · 2025: 10 · 2024: 5 · 2023: 3 · 2022: 6 · 2021: 10 · 2020: 8 · 2019: 6 · 2018: 8 · 2017: 6 · 2016: 11 · 2015: 3 · 2014: 3
FWCI
0.88
Type
journal article
Language
en
Open access
closed
Locations
  • Review of Scientific Instruments (publishedVersion)
  • PubMed (publishedVersion)
Funders
U.S. Department of Energy (DE-FC52-08NA28554)
Topics
  • Physical Sciences › Materials Science › Materials Chemistry › Thermal properties of materials
  • Physical Sciences › Engineering › Mechanics of Materials › Thermography and Photoacoustic Techniques
  • Physical Sciences › Engineering › Mechanics of Materials › Ultrasonics and Acoustic Wave Propagation
Keywords
picosecond acoustics, time-domain thermoreflectance, native oxide, thermal transport properties, error propagation

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