Laser removal of contaminants from painted surfaces

Cruz, Adele de; Wolbarsht, Myron L.; Hauger, Susanne

doi:10.1016/s1296-2074(00)00182-5

Cited by 37 publications

(13 citation statements)

References 16 publications

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“…This system allows one to operate at a wavelength which mainly interacts with OH bonds [48] and allows the frequency and energy to be changed up to 50 macropulses per second and to a maximum of 300 mJ respectively. The delivery light system consists of a 1.5 m long, 0.7 mm bore hollow internal mirrored glass guide with a pen-like tip for aiming at a specific spot with a diameter of less than 1 mm.…”

Section: Samplingmentioning

confidence: 99%

Characterisation of proteinaceous binders in artistic paintings by chromatographic techniques

Colombini

Modugno

2004

J of Separation Science

108

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This review discusses the application of chromatographic techniques (GC, HPLC and Py-GC) for the characterisation of proteinaceous materials in artistic paintings. The focus is on the various analytical steps that are needed to determine these natural materials in paint samples, from sampling and sample pre-treatment, including various methods of hydrolysis and derivatisation for GC and HPLC, to approaches for data evaluation.

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Section: Samplingmentioning

confidence: 99%

Characterisation of proteinaceous binders in artistic paintings by chromatographic techniques

Colombini

Modugno

2004

J of Separation Science

108

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“…They darken oil paint films and decolour some dyes and pigments. The carbon rich component, is regarded as one of the most harmful and dangerous types for the preservation of valuable historical objects, which is due to their ability to stick easily to the surfaces as these component have strong adhesive properties (Cruz et al, 2000). Therefore it is essential to document the spatial and temporal variation of particles and analyse its components to provide fundamental data for further investigations.…”

Section: Introductionmentioning

confidence: 99%

Characterizing Particulate Pollutants in an Enclosed Museum in Shanghai, China

Wang

Xiu

Chen

et al. 2015

Aerosol Air Qual. Res.

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The present study reported simultaneous measurements of particle number concentration (PNC), particle mass concentration, water soluble organic carbon (WSOC), organic carbon (OC), elemental carbon (EC), particulate morphology and main elemental properties. The measurements were conducted in a museum located in the downtown area of Shanghai. The impacts of storey, particle size and decorative flooring on particle characteristics inside museum were investigated. Size fractionated PNC in display halls belonging to the same storey exhibited similar daily variations. Particles within the range of 0.3-0.5 µm were identified as the most significant contributors to the overall size distribution measured, as ambient fine particles penetrated through the mechanical ventilation system. Multi-lognormal fitting OC concentrations can be assigned to the presence of tourists in the museum or originate from secondary OC formation. The latter can be estimated by comparing the relationship between OC and EC, as well as OC and WSOC.

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“…In the experiments described, an infrared Er:YAG laser working at a wavelength of 2.936 μm was used to ablate various varnish layers from fused silica plates. Radiation of this wavelength is strongly absorbed by the OH bond vibration (the absorption coefficient can reach a value of as high as 10 5 cm −1 ), so that the depth of penetration of light into the treated medium may be extremely small [8,9]. OH groups can be introduced onto the surface of layers to be removed as a liquid, for example, water or alcohol, film.…”

Section: Er:yag Laser Systemmentioning

confidence: 99%

Varnish Ablation Control by Optical Coherence Tomography

et al. 2006

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Recommended by Costas FotakisPreliminary results of the application of optical coherence tomography (OCT), in particular in its spectral mode (SOCT) to the control of a varnish ablation process, are presented. Examination of the ablation craters made with an Er:YAG laser allows optimization of the laser emission parameters controlling fluence with respect to efficiency and safety of the ablation process. Results of measurements of ablation crater depth as a function of the number of pulses for a given fluence are presented for selected resins. This validates the applicability of SOCT to calibration of ablation conditions for the particular laser-varnish-paint layer combinations, and of its usage in planning the varnish ablation procedure. These results also imply that a review of conventional ablation thresholds is called for. Applicability of the SOCT technique to contemporaneous in situ monitoring of the range of varnish ablation is discussed.

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Laser removal of contaminants from painted surfaces

Cited by 37 publications

References 16 publications

Characterisation of proteinaceous binders in artistic paintings by chromatographic techniques

Characterisation of proteinaceous binders in artistic paintings by chromatographic techniques

Characterizing Particulate Pollutants in an Enclosed Museum in Shanghai, China

Varnish Ablation Control by Optical Coherence Tomography

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