Development of time-domain differential Raman for transient thermal probing of materials

Xu, Shen; Wang, Tianyu; Hurley, David H.; Yue, Yanan; Wang, Xinwei

doi:10.1364/oe.23.010040

Cited by 46 publications

(29 citation statements)

References 23 publications

(34 reference statements)

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“…Only Raman thermometry which is based on the scattering photon energy of the probe light rather than the light intensity can be effective to define temperature differential in such a small scale. probing light might be a good choice, which is being attempted in Wang's lab [128].…”

Section: Challenges Confronted In Current Thermal Characterization Tementioning

confidence: 99%

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Energy coupling across low-dimensional contact interfaces at the atomic scale

Yue

Zhang

Xie

et al. 2017

International Journal of Heat and Mass Transfer

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The miniaturization in energy devices and their critical needs for heat dissipation have facilitated research on exceptional thermal properties of novel low-dimensional materials. Current studies demonstrated the main challenge for solving thermal transport issues is the large thermal contact resistance across these low-dimensional material interfaces when they are either bundled together or supported by a substrate. A clear understanding of thermal transport across these atomic interfaces through experimental characterization or numerical simulation is important, but nontrivial. Due to instrumentation limit, only a few thermal characterization methods are applicable. Accordingly, many studies have been conducted by theoretical analysis and molecular dynamics to understand the physical process during this ultra-fast and ultra-small thermal transport. In this review, both experimental work and molecular dynamics studies on atomic-scale thermal contact resistance of low-dimensional materials (from zero-to two-dimensional) are reviewed. Challenges as well as opportunities in the study of thermal transport in atomic-layer structures are outlined. Considering the remarkable complexity of physical/chemical conditions, there is still a large room in understanding fundamentals of energy coupling across these atomic-layer interfaces.

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Section: Challenges Confronted In Current Thermal Characterization Tementioning

confidence: 99%

“…Precedent work includes the successful measurement of thermal diffusivity of silicon cantilever [128,129]. and CNT fiber [130].…”

Section: Challenges Confronted In Current Thermal Characterization Tementioning

confidence: 99%

Energy coupling across low-dimensional contact interfaces at the atomic scale

Yue

Zhang

Xie

et al. 2017

International Journal of Heat and Mass Transfer

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“…2a. Combined with the boundary conditions, the spatially averaged temperature rise in the heated region can be expressed as [29]…”

Section: Experimental Principle and Details 21 Experimental Principlementioning

confidence: 99%

“…Recently, it was reported that a time-domain differential Raman (TD-Raman) thermometry was developed by modulating the excitation laser and probing transient Raman scattering during the pulsed heating circle [29]. In this work, the thermal diffusivity of a silicon cantilever was measured to validate the measurement capacity.…”

Section: Introductionmentioning

confidence: 99%

“…In this work, we use TD-Raman method to measure the thermal diffusivity of CNT fiber, and combine the steady-state Raman method to study its thermal properties comprehensively. Most importantly, we expand the application of the recently developed transient Raman method [29], and achieve both transient measurement and steady-state thermal characterization based on Raman thermometry at the same experimental configuration. Fig.…”

Section: Introductionmentioning

confidence: 99%

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Thermal characterization of carbon nanotube fiber by time-domain differential Raman

Yue

et al. 2016

Carbon

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Most conventional Raman thermometry for thermal properties measurement is on steady-state basis, which utilizes either Joule heating effect or two lasers configurations coupled with increased complexity of system or measurement uncertainty. In this work, a new comprehensive approach including both transient and steady-state Raman method is proposed for thermal properties measurement of micro/nanowires. The transient method employs a modulated (pulsed) laser for transient heating and Raman excitation, and is termed time-domain differential Raman. The average elevated temperature during the transient heating period is probed simultaneously based on Raman thermometry. Thermal diffusivity can be readily determined by fitting normalized temperature rise against heating time with a transient heat conduction model. On the other hand, thermal conductivity can be obtained in the steady-state measurement by adjusting modulation settings. To verify this method, a carbon nanotube (CNT) fiber is measured with the thermal diffusivity of 0.20 5 0.20

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Distinguishing Optical and Acoustic Phonon Temperatures and Their Energy Coupling Factor under Photon Excitation in nm 2D Materials

et al. 2020

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Under photon excitation, 2D materials experience cascading energy transfer from electrons to optical phonons (OPs) and acoustic phonons (APs). Despite few modeling works, it remains a long‐history open problem to distinguish the OP and AP temperatures, not to mention characterizing their energy coupling factor ( G ). Here, the temperatures of longitudinal/transverse optical (LO/TO) phonons, flexural optical (ZO) phonons, and APs are distinguished by constructing steady and nanosecond (ns) interphonon branch energy transport states and simultaneously probing them using nanosecond energy transport state‐resolved Raman spectroscopy. Δ T OP −AP is measured to take more than 30% of the Raman‐probed temperature rise. A breakthrough is made on measuring the intrinsic in‐plane thermal conductivity of suspended nm MoS 2 and MoSe 2 by completely excluding the interphonon cascading energy transfer effect, rewriting the Raman‐based thermal conductivity measurement of 2D materials. G OP↔AP for MoS 2 , MoSe 2 , and graphene paper (GP) are characterized. For MoS 2 and MoSe 2 , G OP↔AP is in the order of 10 15 and 10 14 W m −3 K −1 and G ZO↔AP is much smaller than G LO/TO↔AP . Under ns laser excitation, G OP↔AP is significantly increased, probably due to the reduced phonon scattering time by the significantly increased hot carrier population. For GP, G LO/TO↔AP is 0.549 × 10 16 W m −3 K −1 , agreeing well with the value of 0.41 × 10 16 W m −3 K −1 by first‐principles modeling.

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Development of time-domain differential Raman for transient thermal probing of materials

Cited by 46 publications

References 23 publications

Energy coupling across low-dimensional contact interfaces at the atomic scale

Energy coupling across low-dimensional contact interfaces at the atomic scale

Thermal characterization of carbon nanotube fiber by time-domain differential Raman

Distinguishing Optical and Acoustic Phonon Temperatures and Their Energy Coupling Factor under Photon Excitation in nm 2D Materials

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