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Article
Photothermal investigations of phase transitions in liquid thermoelectrics
Two photothermal techniques, the photothermoelectric (PTE) and the photopyroelectric (PPE) were applied to detect first-order phase transitions in some liquid thermoelectric (LTE) material. Due to its large Se...
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Article
Open AccessEffect of the surface roughness on the measured thermal diffusivity of the ZnBeMnSe single-crystalline solids
In this work, the influence of the surface treatment of bulk samples of the single-crystals observed by means of the Atomic Force Microscopy on the measured thermal diffusivity of the material is presented and...
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Article
The photothermoelectric effect of liquid thermoelectrics as a tool for the detection of ferro–paraelectric phase transitions in solids
A new application of the liquid thermoelectrics (LTE) is proposed: the detection of phase transitions in ferroelectric solids. Concretely, the Seebeck effect generated in a known LTE material (dodecanol + 10−1 mo...
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Article
Photothermoelectric (PTE) characterization of CuCrO2 and Cu4Sn7S16 thermoelectric materials
The recently developed photothermoelectric (PTE) calorimetry was applied to measure the thermal parameters of CuCrO2 and Cu4Sn7S16 thermoelectric materials. Both back and front PTE detection configurations were ...
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Article
Photopyroelectric Characterization of Magnetic Nanofluids. Influence of Type and Size of Nanoparticles on the Thermal Parameters
The influence of type and size of nanoparticles on the thermal parameters of some magnetic nanofluids is investigated. Two types of carrier liquids (transformer oil and polypropylene glycol) were combined with...
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Article
Photothermoelectric (PTE) Versus Photopyroelectric (PPE) Detection of Phase Transitions
The photopyroelectric (PPE) technique is one of the photothermal (PT) methods mostly used for phase transitions investigations. In this paper, we want to compare the PPE results with those obtained using anoth...
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Article
Non-destructive Measurement of Total Carotenoid Content in Processed Tomato Products: Infrared Lock-In Thermography, Near-Infrared Spectroscopy/Chemometrics, and Condensed Phase Laser-Based Photoacoustics—Pilot Study
Carotenes found in a diversity of fruits and vegetables are among important natural antioxidants. In a study described in this paper, the total carotenoid content (TCC) in seven different products derived from...
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Article
Open AccessThermal characterization of ZnBeMnSe mixed compounds by means of photopyroelectric and lock-in thermography methods
In this work, a thermal characterization (measurement of dynamic thermal parameters) of quaternary Zn1−x−yBexMnySe mixed crystals was carried out. The crystals under investigation were grown from the melt by the ...
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Article
Erratum to: Thermal characterization of II–VI binary crystals by photopyroelectric calorimetry and infrared lock-in thermography
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Article
Erratum to: Complementary photothermal techniques for complete thermal characterization of porous and semi-transparent solids
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Article
Complementary photothermal techniques for complete thermal characterization of porous and semi-transparent solids
The paper is focused on the ability of using two complementary photothermal techniques for the measurement of all thermal parameters of some porous and/or semi-transparent solid samples whose composition, stru...
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Article
Thermal characterization of II–VI binary crystals by photopyroelectric calorimetry and infrared lock-in thermography
In this paper, a complete thermal characterization (measurement of all static and dynamic thermal parameters) of some selected II–VI binary crystals was carried out. The semiconductors under investigation were...
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Article
Preparation of a new type of giomers and their thermal characterization by photopyroelectric calorimetry
Giomers represent a new concept in restorative dentistry, based on novel pre-reacted glass technology, where special glass-ionomer fillers are included in the resin matrix. A series of resin matrices based on ...
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Article
Photopyroelectric Calorimetry of \(\hbox {Fe}_{3}\hbox {O}_{4}\) Magnetic Nanofluids: Effect of Type of Surfactant and Magnetic Field
Five types of magnetic nanofluids, based on \(\hbox {Fe}_{3}\hbox {O}_{4}\) ...
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Article
Photopyroelectric (PPE) calorimetry of composite materials
The front photopyroelectric configuration was applied to measure the thermal effusivity of some composite materials, inserted as backing layers in the detection cell. The technique is based on the scanning pr...
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Article
Contact and non-contact photothermal calorimetry for investigation of condensed matter
This article is a review of new possibilities offered by two photothermal (PT) methods, a contact (photopyroelectric (PPE) calorimetry) and a non-contact one (photothermal radiometry (PTR)) for accurate measur...
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Article
Photopyroelectric calorimetry of solids
An alternative photopyroelectric (PPE) technique that combines the front detection configuration (FPPE) with the thermal wave resonator cavity (TWRC) method is proposed. The theoretical analysis of the FPPE si...
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Article
Photopyroelectric Detection of Vegetable Oils' Adulteration
Highly accurate photopyroelectric (PPE) investigation, in the thermal-wave-resonator-cavity configuration, was combined with gas chromatography (GC), in order to detect adulteration of flax oil by mixing with ...
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Article
Thermal effusivity investigations of solid materials by using the thermal-wave-resonator-cavity (TWRC) configuration. Theory and mathematical simulations
An alternative photopyroelectric (PPE) technique that combines the front detection configuration (FPPE) with the thermal-wave-resonator-cavity (TWRC) method is proposed. The theoretical analysis of the phase o...
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Article
Thermal analysis of Polymer Dispersed Liquid Crystal under electric field using photopyroelectric technique
In this paper the first measurement of effective thermal parameters (thermal diffusivity, effusivity, conductivity and heat capacity) of Polymer Dispersed Liquid Crystal (PDLC) composites using the photopyroel...
