Preventing colour fading in artworks with graphene veils

Kotsidi, Maria; Gorgolis, George; Carbone, Maria Giovanna Pastore; Anagnostopoulos, George; Paterakis, Georgios; Poggi, Giovanna; Manikas, Anastasios C.; Trakakis, George; Baglioni, Piero; Galiotis, Costas

doi:10.1038/s41565-021-00934-z

Cited by 30 publications

(28 citation statements)

References 37 publications

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“…As shown in a previous work, 29 the presence of graphene monolayer coatings on paintings can be only perceptible under very close inspection when deposited on dark colours (such as blue), whereas it is perceptible at a glance when deposited on light colours (such as pink or yellow). Optical microscopy images of paper specimens dyed with graphene-doped and 2DMs-doped tartrazine do not show any aggregate or darkening spots.…”

Section: Resultssupporting

confidence: 54%

“…In order to shed light on the mechanism of protection offered by graphene and other 2DMs against the fading of colours triggered by light in an environment with oxidative media, tartrazine was chosen as model system, as conducted previously in another work by our group. 29 In fact, tartrazine is known to undergo photolytic degradation upon UV and visible irradiation, which results from the azo bond cleavage and following rupture of its characteristic five-membered ring. 63 GNPs were added to a water solution of tartrazine (0.1% w/w GNPs into the sol) as described in the Experimental section.…”

Section: Gnps Boost Further Multi-functionalities Into Paintsmentioning

confidence: 99%

“…The exploitation of graphene and its related materials for the protection against fading or bleaching of colours and photographs is a newly emerging field. Recently, our group 29 has shown that a single-layer or multilayer graphene veil, produced by chemical vapour deposition, can be deposited over artworks to protect them efficiently against colour fading, with a protection factor of up to 70%. Another example is the use of graphene-enhanced coatings for colour protection of wall painting, which has been proposed by Zhu et al and is based on the exploitation of Ca(OH) 2 /graphene quantum dot nanohybrids.…”

Section: Introductionmentioning

confidence: 99%

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Graphene nanoplatelets and other 2D-materials as protective means against the fading of coloured inks, dyes and paints

et al. 2023

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Section: Resultssupporting

confidence: 54%

Section: Gnps Boost Further Multi-functionalities Into Paintsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Graphene nanoplatelets and other 2D-materials as protective means against the fading of coloured inks, dyes and paints

et al. 2023

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“…Most importantly, the surface energy gradually decreased from the destination SiO 2 /Si wafer to the topmost PDMS layer (Fig. 1b, c), whose surface energy was calculated by measuring the contact angles based on Owen-Wendt and Young's equations 28,44 (Supplementary Table 1 and 2, Supplementary Fig. 4).…”

Section: Design Of Wafer-scale Graphene Integrationmentioning

confidence: 99%

“…Here, we designed a multi-functional tri-layer transfer medium with gradient surface energy distribution, according to the thin-film adhesion theory that transfer of thin film from one layer to another layer is mainly dominated by the difference in surface energy of each layer 42,43 . In this case, the higher surface energy of a target substrate, the better it serves as the thin film 'acceptor' due to the better wetting and larger adhesion strength at interface 44 . Thus, the surface energies of transfer medium and target substrates should be engineered to ensure reliable adhesion and release 45 , critical features for securing the wafer-scale 2D materials integration 1,2,46 .…”

mentioning

confidence: 99%

Integrated wafer-scale ultra-flat graphene by gradient surface energy modulation

et al. 2022

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The integration of large-scale two-dimensional (2D) materials onto semiconductor wafers is highly desirable for advanced electronic devices, but challenges such as transfer-related crack, contamination, wrinkle and doping remain. Here, we developed a generic method by gradient surface energy modulation, leading to a reliable adhesion and release of graphene onto target wafers. The as-obtained wafer-scale graphene exhibited a damage-free, clean, and ultra-flat surface with negligible doping, resulting in uniform sheet resistance with only ~6% deviation. The as-transferred graphene on SiO2/Si exhibited high carrier mobility reaching up ~10,000 cm2 V−1 s−1, with quantum Hall effect (QHE) observed at room temperature. Fractional quantum Hall effect (FQHE) appeared at 1.7 K after encapsulation by h-BN, yielding ultra-high mobility of ~280,000 cm2 V−1 s−1. Integrated wafer-scale graphene thermal emitters exhibited significant broadband emission in near-infrared (NIR) spectrum. Overall, the proposed methodology is promising for future integration of wafer-scale 2D materials in advanced electronics and optoelectronics.

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Present Status and Perspectives of Graphene and Graphene‐related Materials in Cultural Heritage

Galvagno,

Tartaglia,

Stratigaki

et al. 2024

Adv Funct Materials

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Cultural heritage faces recurring degradation processes and natural aging phenomena, demanding the envisioning of innovative preservation solutions inspired by cutting‐edge scientific research. Over extended time frames, current preservation strategies often prove inadequate in preserving the different constituent materials of cultural assets, which are thus threatened by their inherent fragility and by the complex interactions with the surrounding environment. The distinctive properties of graphene and graphene‐related materials (GRMs) now offer unexplored opportunities in the field of cultural heritage, addressing various forms of deterioration phenomena. This work critically analyzes early‐stage literature on the use of graphene and GRMs. Strengths, weaknesses, and limitations in anti‐corrosion, anti‐fading, and consolidation properties of graphene and GRMs are thoroughly investigated, along with their possible applications in smart sensors to monitor the state of health of endangered artifacts. The aim is to elucidate how specific characteristics of graphene and GRMs can be applied to the conservation, diagnostics, and monitoring of artistic and archaeological assets. Future perspectives in the design of stable, long‐lasting, and compatible graphene‐based solutions for cultural heritage protection are highlighted, providing a detailed discussion on potentials and pitfalls.

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Preventing colour fading in artworks with graphene veils

Cited by 30 publications

References 37 publications

Graphene nanoplatelets and other 2D-materials as protective means against the fading of coloured inks, dyes and paints

Graphene nanoplatelets and other 2D-materials as protective means against the fading of coloured inks, dyes and paints

Integrated wafer-scale ultra-flat graphene by gradient surface energy modulation

Present Status and Perspectives of Graphene and Graphene‐related Materials in Cultural Heritage

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