Thermal diffusivity measurements by using "logarithmic method" on samples having anomalous shape.

Local measurements of thermal diffusivity in homogeneous and heterogeneous samples by photoreflectance microscopy

We present a variant of the traditional photoreflectance microscopy. It allows thermal diffusivity measurements on samples as small as a few tens of microns, possibly of mediocre surface quality. In "photoreflectance microscopy", the sample is heated by a modulated laser beam focused by a microscope. A dc probe beam of lower intensity, also focused on the sample by the microscope, is reflected ...

Title Thermal diffusivity measurement of silicon samples by a combined piezoelectric and pyroelectric method

Analysis of thermal probe measurements using an iterative method to give sample conductivity and diffusivity data

The application of Microsoft Excel Solver routines to analyze data from a thermal probe placed in a number of samples is described. The successful application of the Solver routine to the thermal probe temperature time data requires the selection of an appropriate time interval. The various critical times are discussed and a method is proposed for selecting the appropriate Solver routine and th...

A Parameter Estimation Procedure in Thermal Diffusivity Measurements Using the Laser Flash Method

Paper presents the application of Gauss estimation procedure in measuring thermal diffusivity of single materials using the laser pulse method. Unlike procedures, based on that originally established by Parker et al., where thermal diffusivity is derived using one or more characteristic points of experimental signal, this one belongs to socalled inverse technique, which makes use of complete me...

Analysis of Metrological Conditioning of Thermal Diffusivity Measurements Applying Modified Ångström’s Method at Scanning Mode Operation

A technique of the temperature dependent thermal diffusivity investigation has been analysed. The technique is based on the modified Ångström method utilising periodic temperature oscillations in a slab specimen. The additional modification consists of imposing linear temperature changes – application of linear scans. This scanning mode procedure enables investigation of the thermal diffusivity...