A novel CMOS sensor for measuring thermal diffusivity of liquids

Cheng, Yi-Ting; Chang, Chien‐Cheng; Chung, Ya-Rui; Chien, Jui-Hung; Kuo, Jui-Chang; Chen, Wei‐Ting; Chen, Ping‐Hei

doi:10.1016/j.sna.2006.08.026

Cited by 9 publications

(8 citation statements)

References 12 publications

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“…• C [3][4][5], hence altering or in the worst case completely destroying them. In addition, these approaches have the inconvenience for their use in corrosive environments or special care must be paid to isolate the probes since these techniques require being in contact with the sample.…”

Section: Introductionmentioning

confidence: 99%

Optical device for thermal effusivity estimation of liquids

García-Cadena

2018

Rev. Mex. Fís.

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We determined the thermal effusivity of liquids using an optical sensor based on the laser beam deflection technique, without directly irradiate the samples for heating and thus minimally altering them. Applying a heat pulse in a thermo-optical slab we generate a unidimensional temperature distribution. This temperature distribution modifies the refractive index in the slab that finally causes the deflection of a laser beam that propagates perpendicularly to the direction of the heat propagation. The deflection of the laser beam depends on the interaction of the thermal energy with the sample at the slab interface. The exchange of thermal energy between the thermo-optical slab and the sample depends, on the thermal properties of both of them, being the thermal effusivity of our particular interest. Utilizing a theoretical model, we estimate the thermal effusivity of liquids using tridistilled-water and glycerine as reference. We present a simplified version of a past sensor proposal as well as the theoretical analysis of the sensor response. We obtain the thermal effusivity of tridistilled water and glycerine samples with a maximum error of 3%. Finally, we estimate the thermal effusivity of dissolutions of NaCl in tridistilled-water with maximum error of 7.3%.

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Section: Introductionmentioning

confidence: 99%

Optical device for thermal effusivity estimation of liquids

García-Cadena

2018

Rev. Mex. Fís.

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“…Zhan and Tadigadapa [14] and Udina et al [15] used a thermopile and polysilicon heater on a freestanding membrane for measurement of thermal conductivity. Cheng et al [16] designed a CMOS chip to measure thermal diffusivity of liquids. Iervolino et al [17] fabricated a calorimeter chip with a complex two-membrane structure for measuring thermal conductivity and thermal diffusivity of liquids.…”

Section: Introductionmentioning

confidence: 99%

Micro-beam sensor for detection of thermal conductivity of gases and liquids

Takamatsu

Fukunaga

Tanaka

et al. 2014

Sensors and Actuators A: Physical

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“…The steady-state methods are well developed, but are expensive in terms of equipment and are difficult to operate. Among various unsteady-state methods presented so far, a transient hot-wire method (3) becomes one of the commonly used techniques for the measurement of thermal diffusivity of liquids (4) . Over the past several decades, numerous methods have been proposed on the measurement of the thermal diffusivity of liquids under different ranges of temperature and pressure (5)(6)(7)(8)(9)(10)(11) .…”

Section: Introductionmentioning

confidence: 99%

Hybrid Method for Determination of Thermal Diffusivity of Liquid Flowing in a Pipe

Saengswarng

Khunthong

2013

JTST

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The paper deals with determination of thermal diffusivity of liquid flowing in a pipe based on inverse problem. The hybrid method was developed to improve the inverse solution. The proposed method is a combination of the artificial neural network and inverse solution algorithm. The artificial neural network is adopted for making a good initial-guessed value for the inverse solution. Numerical examples are included to demonstrate the performance of the proposed method. In comparison with the simple inverse solution, the proposed hybrid method is efficiently converged to yield good estimates.

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A novel CMOS sensor for measuring thermal diffusivity of liquids

Cited by 9 publications

References 12 publications

Optical device for thermal effusivity estimation of liquids

Optical device for thermal effusivity estimation of liquids

Micro-beam sensor for detection of thermal conductivity of gases and liquids

Hybrid Method for Determination of Thermal Diffusivity of Liquid Flowing in a Pipe

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