Photoacoustic investigations on self-organization effects in metalloporphyrins on glass substrates

Growth, characterization and sensing capabilities of 5,10,15,20-meso-tetraphenyl iron (III) porphyrin chloride films obtained by means of a novel plasma-based deposition technique

“…As regards the Fe(TPP)Cl solid films, it is possible to note that both GDS and SPIN absorption spectra show some differences in the positions of the absorbance peaks as compared with the solution ones. Both GDS and SPIN samples show a B band bathochromically shifted by 10 nm with respect to the position of the monomeric Fe(TPP)Cl one indicating the presence of Fe(TPP)Cl aggregates [34][35][36]. As regards the Q band zone, it is possible to note that differently from the solution spectrum, both GDS and SPIN samples show a two peak structure between 500 and 600 nm.…”

Design of a low power optical limiter based on a new nanocomposite material incorporating silica-encapsulated phthalocyanine in Nafion

“…The surface morphology of the nanocomposite membrane is characterized by a scanning electron microscope. The thermal diffusivity of the membrane is measured employing an open photoacoustic (OPA) cell in transmission detection configuration [35]. The OPA cell is a minimal volume cylindrical chamber made of an aluminium material with a microphone covering at the rear side and a sample, enclosing the small opening of the cell chamber, at the front side.…”

Integrated multimodality imaging for tissue diagnostics

“…PAS constitutes a simple and reliable experimental (Adams and Kirkbright 1977) tool that can perform investigations with minimal sample preparation and has the capability to perform depth profiling experiments on opaque and scattering samples in measuring thermal diffusivity and proves as a method which provides direct measurement of energy absorbed by the sample (Sathiyamoorthy, Vijayan et al 2007). Rosencwaig, Patel and Tam (Patel and Tam 1979, Rosencwaig 1980, Patel and Tam 1981 (Xu and Wang 2006).…”

“…Evaluation of heat-transfer mechanisms and physical properties of biological tissues occurring in tissues have attracted a great attention because of its importance to physical diagnostics and therapies etc. Determination of the thermal diffusivity of biological samples provides a direct method for measuring the energy absorbed by the sample (Sathiyamoorthy and Vijayan 2007) and holds significant role in studying the optical and thermal energy distribution in the tissue during various optical imaging and photothermal applications. The thermal diffusivity measurements are also essential in formulating the energy deposition dosage in biosamples during diagnostic investigations to avoid unwanted tissue burns and thermal coagulations.…”