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A method for measuring liquid phase micro-area temperature

A liquid phase, temperature measuring probe technology, applied in the application of thermometers, thermometers, measuring devices, etc., can solve the problems of inability to use spatial scale measurement, low spatial resolution of temperature measurement, affecting temperature measurement objects, etc., and achieve high temperature measurement. , high spatial resolution, uniform size effect

Inactive Publication Date: 2008-11-26
UNIV OF SCI & TECH OF CHINA
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Problems solved by technology

[0007] The thermochromic liquid crystal method published in German "Fluid Experiments" (Exp.Fluids, 2001, Vol. 30, pp. 190-201) has a narrow temperature measurement range of only 0.5-5°C, and is used for temperature detection. The size of liquid crystal microcapsules is usually in the range of tens of microns, which cannot be used for measurements whose spatial scale is smaller than its size
[0008] To sum up, the existing liquid-phase microsystem temperature measurement methods have the disadvantages of low spatial resolution of temperature measurement, narrow temperature measurement range, impact of temperature probe on the system, and limited temperature measurement objects. Precise positioning and high-resolution measurement of an area within the system

Method used

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  • A method for measuring liquid phase micro-area temperature
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Embodiment 1

[0019] In this embodiment, optical tweezers are used as the micromechanical control means to accurately position the temperature measuring probe, and the temperature of a certain micro-region of water and ethanol aqueous solution is measured at different temperatures.

[0020] figure 1 A kind of nano-optical tweezers system device adopted in the present embodiment is provided, which consists of a laser 1, a microscope (main components include a dichromatic mirror 6, a 100 times oil immersion objective lens 7, a halogen illuminator 10, and a beam splitting prism 11), Piezoelectric scanning platform 8, digital camera 12, computer control system 13 and optical components such as mirrors: Helium-Ne (He-Ne) laser 1 with a power of 10 mW and a wavelength of 632.8 nm is used as the optical tweezers light source, and the output laser After the beam expander 2 and the collimator lens 3 collimate and focus, it is reflected by the mirror 4 and the mirror 5, and then coupled into the opti...

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Abstract

This invention relates to one liquid phase micro part temperature method, which is characterized by adopting light tamper or micro needle to transfer polyphenylacetylene or earth silicon emulsion or powder to test probe head into micro test area to discharge test probe by use of image.

Description

Technical field: [0001] The invention belongs to the technical field of temperature measurement, in particular to a method for measuring the temperature of a liquid-phase microsystem. Background technique: [0002] After retrieval, the existing methods for measuring the temperature of liquid microsystems mainly include: [0003] Holland "chromatography" (J.Chromatogr.A, 1999, the 838th volume, 157-165 page) introduces a kind of system external temperature measurement method that uses microprobe thermocouple close to capillary outer sheath, and its measured temperature is The average value of the system cannot reflect the local temperature changes in the system. In addition, this method belongs to contact measurement. The heat capacity of the temperature measuring element itself will inevitably affect the temperature of the measurement object, and it is difficult to truly reflect the temperature of the system. [0004] Netherlands "Sensing and Braking" (Sens.Actuators A, 200...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01K13/00G01K11/00G01K13/02
Inventor 张文静李银妹楼立人
Owner UNIV OF SCI & TECH OF CHINA
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