Quantification of thermal and contact resistances of scanning thermal probes

Kim, Kyeongtae; Jeong, Wonho; Lee, Woochul; Sadat, Seid; Thompson, Dakotah; Meyhöfer, Edgar; Reddy, Pramod

doi:10.1063/1.4902075

Cited by 18 publications

(18 citation statements)

References 31 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The difference between actual sample temperature and measured probe tip temperature needs to be determined through two ways: i) a calibration process that determines thermal exchange parameters, i.e.,

R_{normalc}^{th}

and b , that allows to quantify Q s‐t and ii) and a process that consists on nullifying Q s‐t 64,134c,138. When taking

R_{normalc}^{th}

into account, the heat transfer between the probe tip and the sample is always assumed to be through a disc‐like area with radius of b .…”

Section: Calibration Techniquesmentioning

confidence: 99%

See 1 more Smart Citation

A Review on Principles and Applications of Scanning Thermal Microscopy (SThM)

Zhang

Zhu

Hui

et al. 2019

Adv Funct Materials

138

106

View full text Add to dashboard Cite

As the size of materials, particles, and devices shrinks to nanometer, atomic, or even quantum scale, it is more challenging to characterize their thermal properties reliably. Scanning thermal microscopy (SThM) is an emerging method to obtain local thermal information by controlling and monitoring probe-sample thermal exchange processes. In this review, key experimental and theoretical components of the SThM system are discussed, including thermal probes and experimental methods, heat transfer mechanisms, calibration strategies, thermal exchange resistance, and effective heat transfer coefficients. Additionally, recent applications of SThM to novel materials and devices are reviewed, with emphasis on thermoelectric, biological, phase change, and 2D materials.

show abstract

R_{normalc}^{th}

and b , that allows to quantify Q s‐t and ii) and a process that consists on nullifying Q s‐t 64,134c,138. When taking

R_{normalc}^{th}

into account, the heat transfer between the probe tip and the sample is always assumed to be through a disc‐like area with radius of b .…”

Section: Calibration Techniquesmentioning

confidence: 99%

“…The first method is monitoring heat flow between probe and sample, such as from picowatt heat flow calorimeter or NP‐SThM64,134c,138 in order to reach zero Q s‐t . The NP‐SThM first developed by Chung et al64,134c,138 used two scans with and without contacting the sample .…”

Section: Calibration Techniquesmentioning

confidence: 99%

A Review on Principles and Applications of Scanning Thermal Microscopy (SThM)

Zhang

Zhu

Hui

et al. 2019

Adv Funct Materials

138

106

View full text Add to dashboard Cite

show abstract

“…Recent advancement in the experimental instruments and operational protocols has enabled the measurement of heat flow through nano-devices with a resolution of picowatts [297][298][299][300][301][302]. Presently, the calorimeters have been applied to monitor cellular activities [303,304]; and to study radiative heat transfer [305][306][307][308][309][310], thermal conductivity of nanostructures [311][312][313][314][315], and phase transitions of nanomaterials [316].…”

Section: General Principle Of Nanocalorimetric Techniquesmentioning

confidence: 99%

Local temperatures out of equilibrium

2019

View full text Add to dashboard Cite

The temperature of a physical system is operationally defined in physics as "that quantity which is measured by a thermometer" weakly coupled to, and at equilibrium with the system. This definition is unique only at global equilibrium in view of the zeroth law of thermodynamics: when the system and the thermometer have reached equilibrium, the "thermometer degrees of freedom" can be traced out and the temperature read by the thermometer can be uniquely assigned to the system. Unfortunately, such a procedure cannot be straightforwardly extended to a system out of equilibrium, where local excitations may be spatially inhomogeneous and the zeroth law of thermodynamics does not hold. With the advent of several experimental techniques that attempt to extract a single parameter characterizing the degree of local excitations of a (mesoscopic or nanoscale) system out of equilibrium, this issue is making a strong comeback to the forefront of research. In this paper, we will review the difficulties to define a unique temperature out of equilibrium, the majority of definitions that have been proposed so far, and discuss both their advantages and limitations. We will then examine a variety of experimental techniques developed for measuring the non-equilibrium local temperatures under various conditions. Finally we will discuss the physical implications of the notion of local temperature, and present the practical applications of such a concept in a variety of nanosystems out of equilibrium. Figure 4: (a) The product of the density of states η(E) times the global distribution function ϕ|ρ|ϕ forms a strongly pronounced peak at the expectation value of the global system energyĒ. (b) The logarithm of the local distribution function a|ρ|a (solid line) and the logarithm of a canonical distribution (dashed line) with the same local temperature for a harmonic chain. (a) and (b) are reprinted with permission from [74].

show abstract

“…The temperature-induced resistance change varies with the second harmonic frequency, 2ω. Previous works using a scanning hot probe have assumed constant values for and ℎ17-21 , some making the assumption that all the heat is transferred from the probe to a single point on the sample 20,21 , and others assuming that the heat transfer is contained within a disc at uniform temperature of radius [17][18][19] . Both the DC and AC thermal response of the probe may be correlated with the thermal resistance of the probe, thermal contact resistance between probe and sample, and thermal resistance of the sample.…”

Section: Introductionmentioning

confidence: 99%

Thermal conductivity measurements of high and low thermal conductivity films using a scanning hot probe method in the 3ω mode and novel calibration strategies

et al. 2015

View full text Add to dashboard Cite

This work discusses measurement of thermal conductivity (k) of films using a scanning hot probe method in the 3ω mode and investigates the calibration of thermal contact parameters, specifically the thermal contact resistance (R(th)C) and thermal exchange radius (b) using reference samples with different thermal conductivities. R(th)C and b were found to have constant values (with b = 2.8 ± 0.3 μm and R(th)C = 44,927 ± 7820 K W(-1)) for samples with thermal conductivity values ranging from 0.36 W K(-1) m(-1) to 1.1 W K(-1) m(-1). An independent strategy for the calibration of contact parameters was developed and validated for samples in this range of thermal conductivity, using a reference sample with a previously measured Seebeck coefficient and thermal conductivity. The results were found to agree with the calibration performed using multiple samples of known thermal conductivity between 0.36 and 1.1 W K(-1) m(-1). However, for samples in the range between 16.2 W K(-1) m(-1) and 53.7 W K(-1) m(-1), calibration experiments showed the contact parameters to have considerably different values: R(th)C = 40,191 ± 1532 K W(-1) and b = 428 ± 24 nm. Finally, this work demonstrates that using these calibration procedures, measurements of both highly conductive and thermally insulating films on substrates can be performed, as the measured values obtained were within 1-20% (for low k) and 5-31% (for high k) of independent measurements and/or literature reports. Thermal conductivity results are presented for a SiGe film on a glass substrate, Te film on a glass substrate, polymer films (doped with Fe nano-particles and undoped) on a glass substrate, and Au film on a Si substrate.

show abstract

Quantification of thermal and contact resistances of scanning thermal probes

Cited by 18 publications

References 31 publications

A Review on Principles and Applications of Scanning Thermal Microscopy (SThM)

A Review on Principles and Applications of Scanning Thermal Microscopy (SThM)

Local temperatures out of equilibrium

Thermal conductivity measurements of high and low thermal conductivity films using a scanning hot probe method in the 3ω mode and novel calibration strategies

Contact Info

Product

Resources

About