The Experts below are selected from a list of 303 Experts worldwide ranked by ideXlab platform
Freek D. Van Der Meer - One of the best experts on this subject based on the ideXlab platform.
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Rock Sample Surface Preparation Influences Thermal Infrared Spectra
Minerals, 2018Co-Authors: Evelien Rost, Christoph Hecker, Martin C. Schodlok, Freek D. Van Der MeerAbstract:High-resolution laboratory-based thermal infrared spectroscopy is an up-and-coming tool in the field of geological remote sensing. Its spatial resolution allows for detailed analyses at centimeter to sub-millimeter scales. However, this increase in resolution creates challenges with sample characteristics, such as grain size, Surface roughness, and porosity, which can influence the spectral signature. This research explores the effect of rock sample Surface Preparation on the thermal infrared spectral signatures. We applied three Surface Preparation methods (split, saw, and polish) to determine how the resulting differences in Surface roughness affects both the spectral shape as well as the spectral contrast. The selected samples are a pure quartz sandstone, a quartz sandstone containing a small percentage of kaolinite, and an intermediate-grained gabbro. To avoid instrument or measurement type biases we conducted measurements on three TIR instruments, resulting in directional hemispherical reflectance spectra, emissivity spectra and bi-directional reflectance images. Surface imaging and analyses were performed with scanning electron microscopy and profilometer measurements. We demonstrate that Surface Preparation affects the TIR spectral signatures influencing both the spectral contrast, as well as the spectral shape. The results show that polished Surfaces predominantly display a high spectral contrast while the sawed and split Surfaces display up to 25% lower reflectance values. Furthermore, the sawed and split Surfaces display spectral signature shape differences at specific wavelengths, which we link to mineral transmission features, Surface orientation effects, and multiple reflections in fine-grained minerals. Hence, the influence of rock Surface Preparation should be taken in consideration to avoid an inaccurate geological interpretation.
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Rock Sample Surface Preparation Influences Thermal Infrared Spectra
2018Co-Authors: Evelien Rost, Christoph Hecker, Martin C. Schodlok, Freek D. Van Der MeerAbstract:High-resolution laboratory-based thermal infrared spectroscopy is an up-and-coming tool in the field of geological remote sensing. Its spatial resolution allows for detailed analyses at centimeter to sub-millimeter scale. However, this increase in resolution creates challenges with sample characteristics such as grain size, Surface roughness and porosity that can influence the spectral signature. This research explores the effect of rock sample Surface Preparation on the TIR spectral signatures. We applied three Surface Preparation methods (split, saw and polish) to determine how the resulting differences in Surface roughness affects both the spectral shape as well as the spectral contrast. The selected samples are a pure quartz sandstone, a quartz sandstone containing a small percentage of kaolinite, and an intermediate-grained gabbro. To avoid instrument or measurement type biases we conducted measurements on three TIR instruments, resulting in directional hemispherical reflectance spectra, emissivity spectra and bi-directional reflectance images. Surface imaging and analyses were performed with scanning electron microscopy and profilometer measurements. We demonstrate that Surface Preparation affects the TIR spectral signatures influencing both the spectral contrast as well as the spectral shape. The results show that polished Surfaces predominantly display a high spectral contrast while the sawed and split Surfaces display up to 25% lower reflectance values. Furthermore, the sawed and split Surfaces display spectral signature shape differences at specific wavelengths, which we link to mineral transmission features, Surface orientation effects and multiple reflections in fine-grained minerals. Hence, the influence of rock Surface Preparation should be taken in consideration to avoid an inaccurate geological interpretation.
Sina Ebnesajjad - One of the best experts on this subject based on the ideXlab platform.
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Chapter 3 – Material Surface Preparation Techniques
Adhesives Technology Handbook, 2015Co-Authors: Sina EbnesajjadAbstract:Surface treatment and Preparation for adhesive bonding is complicated due to the material-specific nature of the required methods. This chapter describes the Surface Preparation and treatment techniques in a general way. Readers interested in information about the treatment of specific materials should refer to sources devoted to that topic.
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Chapter 7 – Surface Preparation of Metals
Surface Treatment of Materials for Adhesive Bonding, 2014Co-Authors: Sina EbnesajjadAbstract:Metals require Surface treatment to remove contamination and prepare their Surfaces for adhesion bonding. Both initial bond strength and bond durability are affected by the Surface Preparation technique. Most metals require unique methods of treatment for optimal bond strength formation, but most Surface Preparation treatment methods use or generate chemicals that have various serious health effects and must be used with extreme caution. The specific Preparation and treatment (or pretreatment) techniques described in this chapter have been reported to provide strong reproducible bonds and fit easily into the bonding operation.
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Introduction to Surface Preparation
Surface Treatment of Materials for Adhesive Bonding, 2014Co-Authors: Sina EbnesajjadAbstract:Surface Preparation or treatment for adhesion is defined as one or a series of operations including cleaning, removal of loose material, and physical and/or chemical modification of a Surface to which an adhesive is applied for the purpose of bonding. In plastics bonding, Surface Preparation is aimed at increasing the Surface polarity, improving Surface wettability, and creating sites for adhesive. In summary, the objective of any Surface treatment method is to enhance the adhesive bond strength and durability. The basic requirements for a good adhesive bond are the following: proper choice of adhesive; good joint design; cleanliness of Surfaces; wetting of adherends (Surfaces that are to be bonded together) by the adhesive; and proper adhesive bonding process (solidification and cure).
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Chapter 8 – Surface Preparation of Thermoplastics, Thermosets, and Elastomers
Surface Treatment of Materials for Adhesive Bonding, 2014Co-Authors: Sina EbnesajjadAbstract:Thermoplastics, thermosets, and elastomers require Surface treatment to remove contamination and prepare their Surfaces for adhesion bonding. Both initial bond strength and bond durability are affected by the Surface Preparation technique. Most materials require unique methods of treatment for optimal bond strength formation. Surface Preparation treatment methods use or generate chemicals that may have various serious health effects and must be used with extreme caution. This chapter describes the common methods used for the Preparation of specific plastic adherends. These procedures provide practical ways to obtain strong, reproducible adhesive bonds that readily fit in commercial processes. The authors have made liberal citation of commercial plastics when describing treatment techniques.
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Material Surface Preparation Techniques
Handbook of Adhesives and Surface Preparation, 2011Co-Authors: Sina EbnesajjadAbstract:Publisher Summary This chapter discusses Surface Preparation and treatment techniques for adhesive bonding. Preparation prior to adhesive bonding is the basis of successful bonding. Surface Preparation, also known as Surface pretreatment, is carried out to render adherend Surfaces receptive to the development of strong, durable adhesive joints. Proper Surface Preparation also ensures that the weakest link in an adhesive joint exists within the adhesive or organic material layer and not at its interface within the adherend. Plasma treatment for cleaning of the contaminants and Surface modifications are used in various applications. This produces the new functional Surfaces, for thermally sensitive substrates can be used for treatment. There are also significant techniques available for the treatment of plastic Surfaces to enhance adhesion including corona, flame and plasma treatment, and chemical etching, all of which serve to increase the Surface energy of plastics. Furthermore, the effectiveness of Surface Preparation can be determined by measuring the bond strength and determining the mode of the failure of the adhesive joint.
Evelien Rost - One of the best experts on this subject based on the ideXlab platform.
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Rock Sample Surface Preparation Influences Thermal Infrared Spectra
Minerals, 2018Co-Authors: Evelien Rost, Christoph Hecker, Martin C. Schodlok, Freek D. Van Der MeerAbstract:High-resolution laboratory-based thermal infrared spectroscopy is an up-and-coming tool in the field of geological remote sensing. Its spatial resolution allows for detailed analyses at centimeter to sub-millimeter scales. However, this increase in resolution creates challenges with sample characteristics, such as grain size, Surface roughness, and porosity, which can influence the spectral signature. This research explores the effect of rock sample Surface Preparation on the thermal infrared spectral signatures. We applied three Surface Preparation methods (split, saw, and polish) to determine how the resulting differences in Surface roughness affects both the spectral shape as well as the spectral contrast. The selected samples are a pure quartz sandstone, a quartz sandstone containing a small percentage of kaolinite, and an intermediate-grained gabbro. To avoid instrument or measurement type biases we conducted measurements on three TIR instruments, resulting in directional hemispherical reflectance spectra, emissivity spectra and bi-directional reflectance images. Surface imaging and analyses were performed with scanning electron microscopy and profilometer measurements. We demonstrate that Surface Preparation affects the TIR spectral signatures influencing both the spectral contrast, as well as the spectral shape. The results show that polished Surfaces predominantly display a high spectral contrast while the sawed and split Surfaces display up to 25% lower reflectance values. Furthermore, the sawed and split Surfaces display spectral signature shape differences at specific wavelengths, which we link to mineral transmission features, Surface orientation effects, and multiple reflections in fine-grained minerals. Hence, the influence of rock Surface Preparation should be taken in consideration to avoid an inaccurate geological interpretation.
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Rock Sample Surface Preparation Influences Thermal Infrared Spectra
2018Co-Authors: Evelien Rost, Christoph Hecker, Martin C. Schodlok, Freek D. Van Der MeerAbstract:High-resolution laboratory-based thermal infrared spectroscopy is an up-and-coming tool in the field of geological remote sensing. Its spatial resolution allows for detailed analyses at centimeter to sub-millimeter scale. However, this increase in resolution creates challenges with sample characteristics such as grain size, Surface roughness and porosity that can influence the spectral signature. This research explores the effect of rock sample Surface Preparation on the TIR spectral signatures. We applied three Surface Preparation methods (split, saw and polish) to determine how the resulting differences in Surface roughness affects both the spectral shape as well as the spectral contrast. The selected samples are a pure quartz sandstone, a quartz sandstone containing a small percentage of kaolinite, and an intermediate-grained gabbro. To avoid instrument or measurement type biases we conducted measurements on three TIR instruments, resulting in directional hemispherical reflectance spectra, emissivity spectra and bi-directional reflectance images. Surface imaging and analyses were performed with scanning electron microscopy and profilometer measurements. We demonstrate that Surface Preparation affects the TIR spectral signatures influencing both the spectral contrast as well as the spectral shape. The results show that polished Surfaces predominantly display a high spectral contrast while the sawed and split Surfaces display up to 25% lower reflectance values. Furthermore, the sawed and split Surfaces display spectral signature shape differences at specific wavelengths, which we link to mineral transmission features, Surface orientation effects and multiple reflections in fine-grained minerals. Hence, the influence of rock Surface Preparation should be taken in consideration to avoid an inaccurate geological interpretation.
Martin C. Schodlok - One of the best experts on this subject based on the ideXlab platform.
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Rock Sample Surface Preparation Influences Thermal Infrared Spectra
Minerals, 2018Co-Authors: Evelien Rost, Christoph Hecker, Martin C. Schodlok, Freek D. Van Der MeerAbstract:High-resolution laboratory-based thermal infrared spectroscopy is an up-and-coming tool in the field of geological remote sensing. Its spatial resolution allows for detailed analyses at centimeter to sub-millimeter scales. However, this increase in resolution creates challenges with sample characteristics, such as grain size, Surface roughness, and porosity, which can influence the spectral signature. This research explores the effect of rock sample Surface Preparation on the thermal infrared spectral signatures. We applied three Surface Preparation methods (split, saw, and polish) to determine how the resulting differences in Surface roughness affects both the spectral shape as well as the spectral contrast. The selected samples are a pure quartz sandstone, a quartz sandstone containing a small percentage of kaolinite, and an intermediate-grained gabbro. To avoid instrument or measurement type biases we conducted measurements on three TIR instruments, resulting in directional hemispherical reflectance spectra, emissivity spectra and bi-directional reflectance images. Surface imaging and analyses were performed with scanning electron microscopy and profilometer measurements. We demonstrate that Surface Preparation affects the TIR spectral signatures influencing both the spectral contrast, as well as the spectral shape. The results show that polished Surfaces predominantly display a high spectral contrast while the sawed and split Surfaces display up to 25% lower reflectance values. Furthermore, the sawed and split Surfaces display spectral signature shape differences at specific wavelengths, which we link to mineral transmission features, Surface orientation effects, and multiple reflections in fine-grained minerals. Hence, the influence of rock Surface Preparation should be taken in consideration to avoid an inaccurate geological interpretation.
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Rock Sample Surface Preparation Influences Thermal Infrared Spectra
2018Co-Authors: Evelien Rost, Christoph Hecker, Martin C. Schodlok, Freek D. Van Der MeerAbstract:High-resolution laboratory-based thermal infrared spectroscopy is an up-and-coming tool in the field of geological remote sensing. Its spatial resolution allows for detailed analyses at centimeter to sub-millimeter scale. However, this increase in resolution creates challenges with sample characteristics such as grain size, Surface roughness and porosity that can influence the spectral signature. This research explores the effect of rock sample Surface Preparation on the TIR spectral signatures. We applied three Surface Preparation methods (split, saw and polish) to determine how the resulting differences in Surface roughness affects both the spectral shape as well as the spectral contrast. The selected samples are a pure quartz sandstone, a quartz sandstone containing a small percentage of kaolinite, and an intermediate-grained gabbro. To avoid instrument or measurement type biases we conducted measurements on three TIR instruments, resulting in directional hemispherical reflectance spectra, emissivity spectra and bi-directional reflectance images. Surface imaging and analyses were performed with scanning electron microscopy and profilometer measurements. We demonstrate that Surface Preparation affects the TIR spectral signatures influencing both the spectral contrast as well as the spectral shape. The results show that polished Surfaces predominantly display a high spectral contrast while the sawed and split Surfaces display up to 25% lower reflectance values. Furthermore, the sawed and split Surfaces display spectral signature shape differences at specific wavelengths, which we link to mineral transmission features, Surface orientation effects and multiple reflections in fine-grained minerals. Hence, the influence of rock Surface Preparation should be taken in consideration to avoid an inaccurate geological interpretation.
Christoph Hecker - One of the best experts on this subject based on the ideXlab platform.
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Rock Sample Surface Preparation Influences Thermal Infrared Spectra
Minerals, 2018Co-Authors: Evelien Rost, Christoph Hecker, Martin C. Schodlok, Freek D. Van Der MeerAbstract:High-resolution laboratory-based thermal infrared spectroscopy is an up-and-coming tool in the field of geological remote sensing. Its spatial resolution allows for detailed analyses at centimeter to sub-millimeter scales. However, this increase in resolution creates challenges with sample characteristics, such as grain size, Surface roughness, and porosity, which can influence the spectral signature. This research explores the effect of rock sample Surface Preparation on the thermal infrared spectral signatures. We applied three Surface Preparation methods (split, saw, and polish) to determine how the resulting differences in Surface roughness affects both the spectral shape as well as the spectral contrast. The selected samples are a pure quartz sandstone, a quartz sandstone containing a small percentage of kaolinite, and an intermediate-grained gabbro. To avoid instrument or measurement type biases we conducted measurements on three TIR instruments, resulting in directional hemispherical reflectance spectra, emissivity spectra and bi-directional reflectance images. Surface imaging and analyses were performed with scanning electron microscopy and profilometer measurements. We demonstrate that Surface Preparation affects the TIR spectral signatures influencing both the spectral contrast, as well as the spectral shape. The results show that polished Surfaces predominantly display a high spectral contrast while the sawed and split Surfaces display up to 25% lower reflectance values. Furthermore, the sawed and split Surfaces display spectral signature shape differences at specific wavelengths, which we link to mineral transmission features, Surface orientation effects, and multiple reflections in fine-grained minerals. Hence, the influence of rock Surface Preparation should be taken in consideration to avoid an inaccurate geological interpretation.
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Rock Sample Surface Preparation Influences Thermal Infrared Spectra
2018Co-Authors: Evelien Rost, Christoph Hecker, Martin C. Schodlok, Freek D. Van Der MeerAbstract:High-resolution laboratory-based thermal infrared spectroscopy is an up-and-coming tool in the field of geological remote sensing. Its spatial resolution allows for detailed analyses at centimeter to sub-millimeter scale. However, this increase in resolution creates challenges with sample characteristics such as grain size, Surface roughness and porosity that can influence the spectral signature. This research explores the effect of rock sample Surface Preparation on the TIR spectral signatures. We applied three Surface Preparation methods (split, saw and polish) to determine how the resulting differences in Surface roughness affects both the spectral shape as well as the spectral contrast. The selected samples are a pure quartz sandstone, a quartz sandstone containing a small percentage of kaolinite, and an intermediate-grained gabbro. To avoid instrument or measurement type biases we conducted measurements on three TIR instruments, resulting in directional hemispherical reflectance spectra, emissivity spectra and bi-directional reflectance images. Surface imaging and analyses were performed with scanning electron microscopy and profilometer measurements. We demonstrate that Surface Preparation affects the TIR spectral signatures influencing both the spectral contrast as well as the spectral shape. The results show that polished Surfaces predominantly display a high spectral contrast while the sawed and split Surfaces display up to 25% lower reflectance values. Furthermore, the sawed and split Surfaces display spectral signature shape differences at specific wavelengths, which we link to mineral transmission features, Surface orientation effects and multiple reflections in fine-grained minerals. Hence, the influence of rock Surface Preparation should be taken in consideration to avoid an inaccurate geological interpretation.
