Photothermal spectrometry for membrane and interfacial region studies†

Snook, Richard D.; Lowe, Roger D.; Baesso, Mauro Luciano

doi:10.1039/a706757g

Cited by 26 publications

(12 citation statements)

References 20 publications

(22 reference statements)

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“…The optical and thermal characterization of biological materials has attracted the attention of researchers in the photothermal field and there are several studies based on the analysis of the skin under light or laser illumination in vitro and in vivo (11). For example, cream residence time (12), water–keratin interactions in stratum corneum (13), ethnic dependence of melanin content in human skin (14) and thermal diffusivity as well as laser‐induced effects in the epidermis and the stratum corneum (15,16).…”

Section: Introductionmentioning

confidence: 99%

Thermal Characterization In Vitro of Human Nail: Photoacoustic Study of the Aging Process

Dias

Steimacher

Bento

et al. 2007

Photochem & Photobiology

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In the present work, the rear photoacoustic signal technique is used to determine thermal properties of human nails. The aging process of the human nail is analyzed through its thermal diffusivity and specific heat and using these results, thermal conductivity and thermal effusivity is determined. The study in vitro of this natural polymer showed a minimum for thermal properties to age about 20 years and an increase and possible saturation of them for ages over 50 years. The minimum value found for thermal diffusivity was close to 10 · 10 )4 cm 2 s )1 with saturation near 18 · 10 )4 cm 2 s )1 . Thermal conductivity and effusivity presents the same behavior.

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Section: Introductionmentioning

confidence: 99%

Thermal Characterization In Vitro of Human Nail: Photoacoustic Study of the Aging Process

Dias

Steimacher

Bento

et al. 2007

Photochem & Photobiology

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“…33 Problems of chemical interest also include the resolution of absorption profiles induced in films via diffusion and photodegradation. In the UV photolysis of thin polymer films such as poly(vinyl chloride) (PVC), depth dependent photochemical reactions change the composition and optical absorption with depth on the 10-300 µm scale.…”

Section: Applicationsmentioning

confidence: 99%

Beam Deflection Photothermal Spectroscopy

Power

2001

Handbook of Vibrational Spectroscopy

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The sections in this article are Introduction Beam Deflection Principles Optical Principles Heat Diffusion Principles Collinear Photothermal Deflection Normal Photothermal Deflection Instrumentation and Measurement Applications

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“…The thermal lens (TL) technique, described elsewhere, 19 was used to measure the thermal diffusivity values of the adhesive films. To do so, the films were deposited in a microscope slide and polymerized as described above.…”

Section: Methodsmentioning

confidence: 99%

Fourier transform infrared photoacoustic spectroscopy study of physicochemical interaction between human dentin and etch-&-rinse adhesives in a simulated moist bond technique

et al. 2012

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Abstract. The purpose of this study was to provide the physicochemical interactions at the interfaces between two commercial etch-&-rinse adhesives and human dentin in a simulated moist bond technique. Six dentin specimens were divided into two groups (n ¼ 3) according to the use of two different adhesive systems: (a) 2-hydroxyethylmethacrylate (HEMA) and 4-methacryloxyethyl trimellitate anhydrate (4-META), and (b) HEMA. The Fourier transform infrared photoacoustic spectroscopy was performed before and after dentin treatment with 37% phosphoric acid, with adhesive systems and also for the adhesive systems alone. Acid-conditioning resulted in a decalcification pattern. Adhesive treated spectra subtraction suggested the occurrence of chemical bonding to dentin expressed through modifications of the OH stretching peak (3340 cm −1 ) and symmetric CH stretching (2900 cm −1 ) for both adhesives spectra; a decrease of orthophosphate absorption band (1040 to 970 cm −1 ) for adhesive A and a better resolved complex band formation (1270 to 970 cm −1 ) for adhesive B were observed. These results suggested the occurrence of chemical bonding between sound human dentin and etch-&-rinse adhesives through a clinical typical condition.

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Photothermal spectrometry for membrane and interfacial region studies†

Cited by 26 publications

References 20 publications

Thermal Characterization In Vitro of Human Nail: Photoacoustic Study of the Aging Process

Thermal Characterization In Vitro of Human Nail: Photoacoustic Study of the Aging Process

Beam Deflection Photothermal Spectroscopy

Fourier transform infrared photoacoustic spectroscopy study of physicochemical interaction between human dentin and etch-&-rinse adhesives in a simulated moist bond technique

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