DOE PAGES title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Direct Measurement of Room-Temperature Nondiffusive Thermal Transport Over Micron Distances in a Silicon Membrane

Abstract

The “textbook” phonon mean free path of heat carrying phonons in silicon at room temperature is $${\sim}40\text{ }\text{ }\mathrm{nm}$$. However, a large contribution to the thermal conductivity comes from low-frequency phonons with much longer mean free paths. We present here a simple experiment demonstrating that room-temperature thermal transport in Si significantly deviates from the diffusion model already at micron distances. Absorption of crossed laser pulses in a freestanding silicon membrane sets up a sinusoidal temperature profile that is monitored via diffraction of a probe laser beam. By changing the period of the thermal grating we vary the heat transport distance within the range $${\sim}1-10\text{ }\text{ }{\mu}\mathrm{m}$$. At small distances, we observe a reduction in the effective thermal conductivity indicating a transition from the diffusive to the ballistic transport regime for the low-frequency part of the phonon spectrum.

Authors:
 [1];  [1];  [2];  [1];  [3];  [4];  [5];  [3];  [1]
  1. Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States). Dept. of Chemistry
  2. Catalan Inst. of Nanotechnology, Barcelona (Spain); Univ. College Cork (Ireland). Dept. of Physics. Tyndall National Inst.
  3. Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States). Dept. of Mechanical Engineering
  4. Catalan Inst. of Nanotechnology, Barcelona (Spain)
  5. Catalan Inst. of Nanotechnology, Barcelona (Spain); Catalan Inst. for Research and Advanced Studies (ICREA), Barcelona (Spain); Autonomous Univ. of Barcelona (Spain). Dept. of Physics
Publication Date:
Research Org.:
Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States); Energy Frontier Research Centers (EFRC) (United States). Solid-State Solar-Thermal Energy Conversion Center (S3TEC)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
OSTI Identifier:
1081191
Alternate Identifier(s):
OSTI ID: 1101856
Grant/Contract Number:  
SC0001299; FG02-09ER46577
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review Letters
Additional Journal Information:
Journal Volume: 110; Journal Issue: 2; Journal ID: ISSN 0031-9007
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
74 ATOMIC AND MOLECULAR PHYSICS

Citation Formats

Johnson, Jeremy A., Maznev, A. A., Cuffe, John, Eliason, Jeffrey K., Minnich, Austin J., Kehoe, Timothy, Torres, Clivia M. Sotomayor, Chen, Gang, and Nelson, Keith A. Direct Measurement of Room-Temperature Nondiffusive Thermal Transport Over Micron Distances in a Silicon Membrane. United States: N. p., 2013. Web. doi:10.1103/PhysRevLett.110.025901.
Johnson, Jeremy A., Maznev, A. A., Cuffe, John, Eliason, Jeffrey K., Minnich, Austin J., Kehoe, Timothy, Torres, Clivia M. Sotomayor, Chen, Gang, & Nelson, Keith A. Direct Measurement of Room-Temperature Nondiffusive Thermal Transport Over Micron Distances in a Silicon Membrane. United States. https://doi.org/10.1103/PhysRevLett.110.025901
Johnson, Jeremy A., Maznev, A. A., Cuffe, John, Eliason, Jeffrey K., Minnich, Austin J., Kehoe, Timothy, Torres, Clivia M. Sotomayor, Chen, Gang, and Nelson, Keith A. Tue . "Direct Measurement of Room-Temperature Nondiffusive Thermal Transport Over Micron Distances in a Silicon Membrane". United States. https://doi.org/10.1103/PhysRevLett.110.025901. https://www.osti.gov/servlets/purl/1081191.
@article{osti_1081191,
title = {Direct Measurement of Room-Temperature Nondiffusive Thermal Transport Over Micron Distances in a Silicon Membrane},
author = {Johnson, Jeremy A. and Maznev, A. A. and Cuffe, John and Eliason, Jeffrey K. and Minnich, Austin J. and Kehoe, Timothy and Torres, Clivia M. Sotomayor and Chen, Gang and Nelson, Keith A.},
abstractNote = {The “textbook” phonon mean free path of heat carrying phonons in silicon at room temperature is ${\sim}40\text{ }\text{ }\mathrm{nm}$. However, a large contribution to the thermal conductivity comes from low-frequency phonons with much longer mean free paths. We present here a simple experiment demonstrating that room-temperature thermal transport in Si significantly deviates from the diffusion model already at micron distances. Absorption of crossed laser pulses in a freestanding silicon membrane sets up a sinusoidal temperature profile that is monitored via diffraction of a probe laser beam. By changing the period of the thermal grating we vary the heat transport distance within the range ${\sim}1-10\text{ }\text{ }{\mu}\mathrm{m}$. At small distances, we observe a reduction in the effective thermal conductivity indicating a transition from the diffusive to the ballistic transport regime for the low-frequency part of the phonon spectrum.},
doi = {10.1103/PhysRevLett.110.025901},
journal = {Physical Review Letters},
number = 2,
volume = 110,
place = {United States},
year = {Tue Jan 08 00:00:00 EST 2013},
month = {Tue Jan 08 00:00:00 EST 2013}
}

Journal Article:

Citation Metrics:
Cited by: 316 works
Citation information provided by
Web of Science

Figures / Tables:

FIG. 1 FIG. 1 : (color online). Schematics of the sample and the experiment. (a) Freestanding Si membranes are fabricated from SOI wafers by backside etching. (b) Pump pulses are crossed in the silicon membrane, generating the transient thermal grating monitored via diffraction of the probe beam. Diffracted probe light is combinedmore » with a reference beam and directed to a fast detector.« less

Save / Share:

Works referenced in this record:

Quasi-ballistic thermal transport from nanoscale interfaces observed using ultrafast coherent soft X-ray beams
journal, November 2009

  • Siemens, Mark E.; Li, Qing; Yang, Ronggui
  • Nature Materials, Vol. 9, Issue 1
  • DOI: 10.1038/nmat2568

Intrinsic lattice thermal conductivity of semiconductors from first principles
journal, December 2007

  • Broido, D. A.; Malorny, M.; Birner, G.
  • Applied Physics Letters, Vol. 91, Issue 23
  • DOI: 10.1063/1.2822891

The mean free path of electrons in metals
journal, January 1952


Cross-plane phonon transport in thin films
journal, December 2010

  • Sellan, D. P.; Turney, J. E.; McGaughey, A. J. H.
  • Journal of Applied Physics, Vol. 108, Issue 11
  • DOI: 10.1063/1.3517158

Optical heterodyne detection of laser-induced gratings
journal, January 1998

  • Maznev, A. A.; Nelson, K. A.; Rogers, J. A.
  • Optics Letters, Vol. 23, Issue 16
  • DOI: 10.1364/OL.23.001319

Thermal Conductivity Spectroscopy Technique to Measure Phonon Mean Free Paths
journal, August 2011


Heat transport in silicon from first-principles calculations
journal, August 2011


Energy dissipation and transport in nanoscale devices
journal, March 2010


Optical Generation and Characterization of Acoustic Waves in Thin Films: Fundamentals and Applications
journal, August 2000


Intrinsic phonon relaxation times from first-principles studies of the thermal conductivities of Si and Ge
journal, February 2010


The conductivity of thin metallic films according to the electron theory of metals
journal, January 1938


Measurement of ballistic phonon conduction near hotspots in silicon
journal, May 2001

  • Sverdrup, P. G.; Sinha, S.; Asheghi, M.
  • Applied Physics Letters, Vol. 78, Issue 21
  • DOI: 10.1063/1.1371536

Ultrafast dynamics of laser-excited electron distributions in silicon
journal, February 1994


Phonon scattering in silicon films with thickness of order 100 nm
journal, May 1999

  • Ju, Y. S.; Goodson, K. E.
  • Applied Physics Letters, Vol. 74, Issue 20
  • DOI: 10.1063/1.123994

Ballistic-phonon heat conduction at the nanoscale as revealed by time-resolved x-ray diffraction and time-domain thermoreflectance
journal, August 2007


Thermal conductivity and ballistic-phonon transport in the cross-plane direction of superlattices
journal, June 1998


Thermal boundary resistance
journal, July 1989


Photoexcited carrier diffusion near a Si(111) surface: Non-negligible consequence of carrier-carrier scattering
journal, December 1997


Optical temperature measurements on thin freestanding silicon membranes
journal, November 2010

  • Schmotz, Markus; Bookjans, Patrick; Scheer, Elke
  • Review of Scientific Instruments, Vol. 81, Issue 11
  • DOI: 10.1063/1.3499503

Laser-induced free-carrier and temperature gratings in silicon
journal, August 1987


Onset of nondiffusive phonon transport in transient thermal grating decay
journal, November 2011


Frequency dependence of the thermal conductivity of semiconductor alloys
journal, August 2007


Nanoscale thermal transport
journal, January 2003

  • Cahill, David G.; Ford, Wayne K.; Goodson, Kenneth E.
  • Journal of Applied Physics, Vol. 93, Issue 2, p. 793-818
  • DOI: 10.1063/1.1524305

Imaging Phonons
book, January 1998


Microscale Heat Conduction in Dielectric Thin Films
journal, February 1993


Spectral Phonon Transport Properties of Silicon Based on Molecular Dynamics Simulations and Lattice Dynamics
journal, February 2008

  • Henry, Asegun S.; Chen, Gang
  • Journal of Computational and Theoretical Nanoscience, Vol. 5, Issue 2
  • DOI: 10.1166/jctn.2008.2454

Solid state physics
journal, May 1958


Quasi-ballistic thermal transport from nanoscale interfaces observed using ultrafast coherent soft x-ray beams
conference, February 2011

  • Siemens, Mark E.; Li, Qing; Yang, Ronggui
  • SPIE OPTO, SPIE Proceedings
  • DOI: 10.1117/12.871455

Solid State Physics
book, January 2005


Imaging phonons
journal, December 2014


The mean free path of electrons in metals
journal, September 2001


Thermal Boundary Resistance.
journal, August 1971


Cross-plane phonon transport in thin films
text, January 2010

  • Sellan, Daniel P.; Turney, J. E.; McGaughey, Alan J. H.
  • Carnegie Mellon University
  • DOI: 10.1184/r1/6489779

Solid state physics
book, October 2002


Thermal Boundary Resistance
journal, June 1971


Heat transport in silicon from first principles calculations
text, January 2011


Onset of non-diffusive phonon transport in transient thermal grating decay
text, January 2011


Works referencing / citing this record:

Thermal Conductivity and Phonon Scattering Processes of ALD Grown PbTe–PbSe Thermoelectric Thin Films
journal, September 2019

  • DeCoster, Mallory E.; Chen, Xin; Zhang, Kai
  • Advanced Functional Materials, Vol. 29, Issue 46
  • DOI: 10.1002/adfm.201904073

2D Phononic Crystals: Progress and Prospects in Hypersound and Thermal Transport Engineering
journal, August 2019

  • Sledzinska, Marianna; Graczykowski, Bartlomiej; Maire, Jeremie
  • Advanced Functional Materials, Vol. 30, Issue 8
  • DOI: 10.1002/adfm.201904434

Phonon Spectrum and Transient Regimes in the KCM
book, January 2018


Moment model and boundary conditions for energy transport in the phonon gas
journal, September 2013

  • Fryer, Michael J.; Struchtrup, Henning
  • Continuum Mechanics and Thermodynamics, Vol. 26, Issue 5
  • DOI: 10.1007/s00161-013-0320-y

Unsteady ballistic heat transport in harmonic crystals with polyatomic unit cell
journal, June 2019


A review of computational phononics: the bulk, interfaces, and surfaces
journal, October 2017

  • VanGessel, Francis; Peng, Jie; Chung, Peter W.
  • Journal of Materials Science, Vol. 53, Issue 8
  • DOI: 10.1007/s10853-017-1728-8

Photo-excited charge carriers suppress sub-terahertz phonon mode in silicon at room temperature
journal, October 2016

  • Liao, Bolin; Maznev, A. A.; Nelson, Keith A.
  • Nature Communications, Vol. 7, Issue 1
  • DOI: 10.1038/ncomms13174

Heat guiding and focusing using ballistic phonon transport in phononic nanostructures
journal, May 2017

  • Anufriev, Roman; Ramiere, Aymeric; Maire, Jeremie
  • Nature Communications, Vol. 8, Issue 1
  • DOI: 10.1038/ncomms15505

Broadband phonon mean free path contributions to thermal conductivity measured using frequency domain thermoreflectance
journal, March 2013

  • Regner, Keith T.; Sellan, Daniel P.; Su, Zonghui
  • Nature Communications, Vol. 4, Issue 1
  • DOI: 10.1038/ncomms2630

Engineering thermal conductance using a two-dimensional phononic crystal
journal, March 2014

  • Zen, Nobuyuki; Puurtinen, Tuomas A.; Isotalo, Tero J.
  • Nature Communications, Vol. 5, Issue 1
  • DOI: 10.1038/ncomms4435

Spectral mapping of thermal conductivity through nanoscale ballistic transport
journal, June 2015

  • Hu, Yongjie; Zeng, Lingping; Minnich, Austin J.
  • Nature Nanotechnology, Vol. 10, Issue 8
  • DOI: 10.1038/nnano.2015.109

Full-field thermal imaging of quasiballistic crosstalk reduction in nanoscale devices
journal, January 2018


Computational Study of In-Plane Phonon Transport in Si Thin Films
journal, September 2014

  • Wang, Xinjiang; Huang, Baoling
  • Scientific Reports, Vol. 4, Issue 1
  • DOI: 10.1038/srep06399

Measuring Phonon Mean Free Path Distributions by Probing Quasiballistic Phonon Transport in Grating Nanostructures
journal, November 2015

  • Zeng, Lingping; Collins, Kimberlee C.; Hu, Yongjie
  • Scientific Reports, Vol. 5, Issue 1
  • DOI: 10.1038/srep17131

Probing ballistic thermal conduction in segmented silicon nanowires
journal, January 2019

  • Anufriev, Roman; Gluchko, Sergei; Volz, Sebastian
  • Nanoscale, Vol. 11, Issue 28
  • DOI: 10.1039/c9nr03863a

Nanoscale thermal transport. II. 2003–2012
journal, March 2014

  • Cahill, David G.; Braun, Paul V.; Chen, Gang
  • Applied Physics Reviews, Vol. 1, Issue 1
  • DOI: 10.1063/1.4832615

Radial quasiballistic transport in time-domain thermoreflectance studied using Monte Carlo simulations
journal, April 2014

  • Ding, D.; Chen, X.; Minnich, A. J.
  • Applied Physics Letters, Vol. 104, Issue 14
  • DOI: 10.1063/1.4870811

Disparate quasiballistic heat conduction regimes from periodic heat sources on a substrate
journal, August 2014

  • Zeng, Lingping; Chen, Gang
  • Journal of Applied Physics, Vol. 116, Issue 6
  • DOI: 10.1063/1.4893299

Length-dependent thermal transport and ballistic thermal conduction
journal, May 2015

  • Huang, Bor-Woei; Hsiao, Tzu-Kan; Lin, Kung-Hsuan
  • AIP Advances, Vol. 5, Issue 5
  • DOI: 10.1063/1.4914584

Laser-induced transient grating setup with continuously tunable period
journal, December 2015

  • Vega-Flick, A.; Eliason, J. K.; Maznev, A. A.
  • Review of Scientific Instruments, Vol. 86, Issue 12
  • DOI: 10.1063/1.4936767

Role of low-energy phonons with mean-free-paths >0.8 μm in heat conduction in silicon
journal, June 2016

  • Jiang, Puqing; Lindsay, Lucas; Koh, Yee Kan
  • Journal of Applied Physics, Vol. 119, Issue 24
  • DOI: 10.1063/1.4954674

Optimal thickness of silicon membranes to achieve maximum thermoelectric efficiency: A first principles study
journal, August 2016

  • Mangold, Claudia; Neogi, Sanghamitra; Donadio, Davide
  • Applied Physics Letters, Vol. 109, Issue 5
  • DOI: 10.1063/1.4960197

Thermal transport in suspended silicon membranes measured by laser-induced transient gratings
journal, December 2016

  • Vega-Flick, A.; Duncan, R. A.; Eliason, J. K.
  • AIP Advances, Vol. 6, Issue 12
  • DOI: 10.1063/1.4968610

Thermal conductivity of Bi 2 (Se x Te 1−x ) 3 alloy films grown by molecular beam epitaxy
journal, June 2017

  • Yoo, Taehee; Lee, Eungkyu; Dong, Sining
  • APL Materials, Vol. 5, Issue 6
  • DOI: 10.1063/1.4984974

Generation of coherent phonons by coherent extreme ultraviolet radiation in a transient grating experiment
journal, November 2018

  • Maznev, A. A.; Bencivenga, F.; Cannizzo, A.
  • Applied Physics Letters, Vol. 113, Issue 22
  • DOI: 10.1063/1.5048023

Phonon relaxation time reconstruction from transient thermal grating experiments and comparison with density functional theory predictions
journal, January 2019

  • Forghani, Mojtaba; Hadjiconstantinou, Nicolas G.
  • Applied Physics Letters, Vol. 114, Issue 2
  • DOI: 10.1063/1.5062846

Perspective on ab initio phonon thermal transport
journal, August 2019

  • Lindsay, Lucas; Katre, Ankita; Cepellotti, Andrea
  • Journal of Applied Physics, Vol. 126, Issue 5
  • DOI: 10.1063/1.5108651

Modeling ballistic phonon transport from a cylindrical electron beam heat source
journal, September 2019

  • Wehmeyer, Geoff
  • Journal of Applied Physics, Vol. 126, Issue 12
  • DOI: 10.1063/1.5115165

Strain induced large enhancement of thermoelectric figure-of-merit ( ZT  ∼ 2) in transition metal dichalcogenide monolayers ZrX 2 (X = S, Se, Te)
journal, December 2019

  • D’Souza, Ransell; Mukherjee, Sugata; Ahmad, Sohail
  • Journal of Applied Physics, Vol. 126, Issue 21
  • DOI: 10.1063/1.5125191

Semiballistic thermal conduction in polycrystalline SiGe nanowires
journal, December 2019

  • Okamoto, Noboru; Yanagisawa, Ryoto; Anufriev, Roman
  • Applied Physics Letters, Vol. 115, Issue 25
  • DOI: 10.1063/1.5130659

Ballistic thermal phonons traversing nanocrystalline domains in oriented polyethylene
journal, August 2019

  • Robbins, Andrew B.; Drakopoulos, Stavros X.; Martin-Fabiani, Ignacio
  • Proceedings of the National Academy of Sciences, Vol. 116, Issue 35
  • DOI: 10.1073/pnas.1905492116

Coherent and transient states studied with extreme ultraviolet and X-ray free electron lasers: present and future prospects
journal, April 2015


Evaluating Broader Impacts of Nanoscale Thermal Transport Research
journal, April 2015

  • Shi, Li; Dames, Chris; Lukes, Jennifer R.
  • Nanoscale and Microscale Thermophysical Engineering, Vol. 19, Issue 2
  • DOI: 10.1080/15567265.2015.1031857

Advances in Studying Phonon Mean Free Path Dependent Contributions to Thermal Conductivity
journal, May 2015

  • Regner, Keith T.; Freedman, Justin P.; Malen, Jonathan A.
  • Nanoscale and Microscale Thermophysical Engineering, Vol. 19, Issue 3
  • DOI: 10.1080/15567265.2015.1045640

First Principles Peierls-Boltzmann Phonon Thermal Transport: A Topical Review
journal, April 2016


First-principles calculations of thermal, electrical, and thermoelectric transport properties of semiconductors
journal, March 2016


Advances in the measurement and computation of thermal phonon transport properties
journal, January 2015


Magnon and phonon thermometry with inelastic light scattering
journal, February 2018

  • Olsson, Kevin S.; An, Kyongmo; Li, Xiaoqin
  • Journal of Physics D: Applied Physics, Vol. 51, Issue 13
  • DOI: 10.1088/1361-6463/aaadde

Equilibration of energies in a two-dimensional harmonic graphene lattice
journal, November 2019

  • Berinskii, I.; Kuzkin, V. A.
  • Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences, Vol. 378, Issue 2162
  • DOI: 10.1098/rsta.2019.0114

Minimizing Coherent Thermal Conductance by Controlling the Periodicity of Two-Dimensional Phononic Crystals
journal, July 2019


Long mean free paths of room-temperature THz acoustic phonons in a high thermal conductivity material
journal, September 2019


Nonequilibrium phonon transport across nanoscale interfaces
journal, September 2019


Direct simulation of second sound in graphene by solving the phonon Boltzmann equation via a multiscale scheme
journal, October 2019


Correlation of shear forces and heat conductance in nanoscale junctions
journal, December 2019


Phonon hydrodynamics in frequency-domain thermoreflectance experiments
journal, February 2020


Direct measurement of coherent subterahertz acoustic phonons mean free path in GaAs
journal, May 2016


First principles kinetic-collective thermal conductivity of semiconductors
journal, April 2017


Dynamical thermal conductivity of suspended graphene ribbons in the hydrodynamic regime
journal, July 2018


Spectrally Resolved Specular Reflections of Thermal Phonons from Atomically Rough Surfaces
journal, October 2018

  • Ravichandran, Navaneetha K.; Zhang, Hang; Minnich, Austin J.
  • Physical Review X, Vol. 8, Issue 4
  • DOI: 10.1103/physrevx.8.041004

A Generalized Enhanced Fourier Law
journal, November 2016

  • Ramu, Ashok T.; Bowers, John E.
  • Journal of Heat Transfer, Vol. 139, Issue 3
  • DOI: 10.1115/1.4034796

Observation of second sound in graphite at temperatures above 100 K
journal, March 2019


Heat conduction in nanostructures
journal, May 2017


Nanophononics: state of the art and perspectives
journal, January 2016

  • Volz, Sebastian; Ordonez-Miranda, Jose; Shchepetov, Andrey
  • The European Physical Journal B, Vol. 89, Issue 1
  • DOI: 10.1140/epjb/e2015-60727-7

Universal phonon mean free path spectra in crystalline semiconductors at high temperature.
text, January 2013

  • Freedman, Justin P.; Leach, Jacob H.; Preble, Edward A.
  • Carnegie Mellon University
  • DOI: 10.1184/r1/6490241.v1

Impact of the Regularization Parameter in the Mean Free Path Reconstruction Method: Nanoscale Heat Transport and Beyond
journal, March 2019

  • Sanchez-Martinez, Miguel-Ángel; Alzina, Francesc; Oyarzo, Juan
  • Nanomaterials, Vol. 9, Issue 3
  • DOI: 10.3390/nano9030414

In-plane Thermal Conductivity Measurement with Nanosecond Grating Imaging Technique
text, January 2018


Monte Carlo study of non-diffusive relaxation of a transient thermal grating in thin membranes
journal, February 2016

  • Zeng, Lingping; Chiloyan, Vazrik; Huberman, Samuel
  • Applied Physics Letters, Vol. 108, Issue 6
  • DOI: 10.1063/1.4941766

Towards massively parallelized all-optical magnetic recording
journal, June 2018

  • Davies, C. S.; Janušonis, J.; Kimel, A. V.
  • Journal of Applied Physics, Vol. 123, Issue 21
  • DOI: 10.1063/1.5003713

Thermal diffusivity determination using heterodyne phase insensitive transient grating spectroscopy
journal, June 2018

  • Dennett, Cody A.; Short, Michael P.
  • Journal of Applied Physics, Vol. 123, Issue 21
  • DOI: 10.1063/1.5026429

Tutorial: Time-domain thermoreflectance (TDTR) for thermal property characterization of bulk and thin film materials
journal, October 2018

  • Jiang, Puqing; Qian, Xin; Yang, Ronggui
  • Journal of Applied Physics, Vol. 124, Issue 16
  • DOI: 10.1063/1.5046944

Nanoscale transient gratings excited and probed by extreme ultraviolet femtosecond pulses
journal, July 2019

  • Bencivenga, F.; Mincigrucci, R.; Capotondi, F.
  • Science Advances, Vol. 5, Issue 7
  • DOI: 10.1126/sciadv.aaw5805

Universal phonon mean free path spectra in crystalline semiconductors at high temperature.
text, January 2013

  • Freedman, Justin P.; Leach, Jacob H.; Preble, Edward A.
  • Carnegie Mellon University
  • DOI: 10.1184/r1/6490241

In-plane Thermal Conductivity Measurement with Nanosecond Grating Imaging Technique
text, January 2018


Universal phonon mean free path spectra in crystalline semiconductors at high temperature
journal, October 2013

  • Freedman, Justin P.; Leach, Jacob H.; Preble, Edward A.
  • Scientific Reports, Vol. 3, Issue 1
  • DOI: 10.1038/srep02963

Direct measurement of coherent subterahertz acoustic phonons mean free path in GaAs
text, January 2015


Monte Carlo Study of Non-diffusive Relaxation of A Transient Thermal Grating in Thin Membranes
text, January 2015


Generation of coherent phonons by coherent extreme ultraviolet radiation in a transient grating experiment
text, January 2018

  • Maznev, A. A.; Bencivenga, F.; Cannizzo, Andrea
  • American Institute of Physics
  • DOI: 10.7892/boris.133468

Figures/Tables have been extracted from DOE-funded journal article accepted manuscripts.