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Search Results (490)

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25 pages, 7359 KiB  
Article
Street Art in the Rain: Evaluating the Durability of Protective Coatings for Contemporary Muralism Through Accelerated Rain Ageing
by Laura Pagnin, Sara Goidanich, Nicolò Guarnieri, Francesca Caterina Izzo, Jaime Jorge Hormida Henriquez and Lucia Toniolo
Coatings 2025, 15(8), 924; https://doi.org/10.3390/coatings15080924 (registering DOI) - 7 Aug 2025
Abstract
Contemporary muralism has gained increasing cultural and social relevance in recent years, becoming a prominent form of urban artistic expression. However, its outdoor exposure makes it highly vulnerable to environmental degradation, raising significant challenges for long-term preservation. While solar radiation is widely recognized [...] Read more.
Contemporary muralism has gained increasing cultural and social relevance in recent years, becoming a prominent form of urban artistic expression. However, its outdoor exposure makes it highly vulnerable to environmental degradation, raising significant challenges for long-term preservation. While solar radiation is widely recognized as a main agent of deterioration, the impact of rainfall has received comparatively little attention. This study addresses this gap by evaluating the durability of commercial protective coatings applied to modern paints (alkyd, acrylic, and styrene-acrylic) under simulated rain exposure. The ageing protocol replicates approximately 10 years of cumulative rainfall in Central-Southern Europe. A key innovation of this research is the use of a custom-built rain chamber, uniquely designed to expose a large number of samples simultaneously under highly uniform and controlled rain conditions. The system ensures reproducible exposure through a precision-controlled moving platform and programmable rain delivery. A comprehensive set of analytical techniques was employed to assess morphological, chemical, and functional changes in the coatings and paints before and after ageing. Results highlight the limited performance of current protective materials and the need for more effective solutions for the conservation of contemporary outdoor artworks. Full article
(This article belongs to the Section Surface Characterization, Deposition and Modification)
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13 pages, 7106 KiB  
Article
Multi-Scale Universal Style-Transfer Network Based on Diffusion Model
by Na Su, Jingtao Wang and Yun Pan
Algorithms 2025, 18(8), 481; https://doi.org/10.3390/a18080481 - 4 Aug 2025
Viewed by 142
Abstract
Artistic style transfer aims to transfer the style of an artwork to a photograph while maintaining its original overall content. Although current style-transfer methods have achieved promising results when processing photorealistic images, they often struggle with brushstroke preservation in artworks, especially in styles [...] Read more.
Artistic style transfer aims to transfer the style of an artwork to a photograph while maintaining its original overall content. Although current style-transfer methods have achieved promising results when processing photorealistic images, they often struggle with brushstroke preservation in artworks, especially in styles such as oil painting and pointillism. In such cases, the extracted style and content features tend to include redundant information, leading to issues such as blurred edges and a loss of fine details in the transferred images. To address this problem, this paper proposes a multi-scale general style-transfer network based on diffusion models. The proposed network consists of a coarse style-transfer module and a refined style-transfer module. First, the coarse style-transfer module is designed to perform mainstream style-transfer tasks more efficiently by operating on downsampled images, enabling faster processing with satisfactory results. Next, to further enhance edge fidelity, a refined style-transfer module is introduced. This module utilizes a segmentation component to generate a mask of the main subject in the image and performs edge-aware refinement. This enhances the fusion between the subject’s edges and the target style while preserving more detailed features. To improve overall image quality and better integrate the style along the content boundaries, the output from the coarse module is upsampled by a factor of two and combined with the subject mask. With the assistance of ControlNet and Stable Diffusion, the model performs content-aware edge redrawing to enhance the overall visual quality of the stylized image. Compared with state-of-the-art style-transfer methods, the proposed model preserves more edge details and achieves more natural fusion between style and content. Full article
(This article belongs to the Section Evolutionary Algorithms and Machine Learning)
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28 pages, 20978 KiB  
Article
From Painting to Cinema: Archetypes of the European Woman as a Cultural Mediator in the Western genre
by Olga Kosachova
Arts 2025, 14(4), 83; https://doi.org/10.3390/arts14040083 - 23 Jul 2025
Viewed by 450
Abstract
The Western genre has traditionally been associated with American identity and male-dominated narratives. However, recent decades have seen increasing attention to female protagonists, particularly the European woman as a cultural mediator within the frontier context. This study aims to identify the archetypes of [...] Read more.
The Western genre has traditionally been associated with American identity and male-dominated narratives. However, recent decades have seen increasing attention to female protagonists, particularly the European woman as a cultural mediator within the frontier context. This study aims to identify the archetypes of the European woman in the Western genre through a diachronic and comparative analysis of the visual language found in European painting from the late 17th to early 19th centuries and in 20th–21st century cinema. The research methodology combines narrative, visual, and semiotic analysis, with a focus on intermedial and intertextual parallels between visual art and film. The study identifies nine archetypal models corresponding to goddesses of the Greek pantheon and traces their transformation across different aesthetic systems. These archetypes, rooted in artistic traditions such as Baroque, Classicism, Romanticism, and others, reappear in Western films through compositional, symbolic, and iconographic strategies, demonstrating their persistence and ability to transcend temporal, medial, and geographical boundaries. The findings suggest that the woman in the Western genre is not merely a central character, but a visual sign that activates cultural memory and engages with deep archetypal structures embedded in the collective unconscious. Full article
(This article belongs to the Special Issue What is ‘Art’ Cinema?)
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27 pages, 1803 KiB  
Article
Mural Painting Across Eras: From Prehistoric Caves to Contemporary Street Art
by Anna Maria Martyka, Agata Rościecha-Kanownik and Ignacio Fernández Torres
Arts 2025, 14(4), 77; https://doi.org/10.3390/arts14040077 - 16 Jul 2025
Viewed by 1075
Abstract
This article traces the historical evolution of mural painting as a medium of cultural expression from prehistoric cave art to contemporary street interventions. Adopting a diachronic and interdisciplinary approach, it investigates how muralism has developed across civilizations in relation to techniques, symbolic systems, [...] Read more.
This article traces the historical evolution of mural painting as a medium of cultural expression from prehistoric cave art to contemporary street interventions. Adopting a diachronic and interdisciplinary approach, it investigates how muralism has developed across civilizations in relation to techniques, symbolic systems, social function, and its embeddedness in architectural and urban contexts. The analysis is structured around key historical periods using emblematic case studies to examine the interplay between materiality, iconography, and socio-political meaning. From sacred enclosures and civic monuments to post-industrial walls and digital projections, murals reflect shifting cultural paradigms and spatial dynamics. This study emphasizes how mural painting, once integrated into sacred and imperial architecture, has become a tool for public participation, protests, and urban storytelling. Particular attention is paid to the evolving relationship between wall painting and the spaces it inhabits, highlighting the transition from permanence to ephemerality and from monumentality to immediacy. This article contributes to mural studies by offering a comprehensive framework for understanding the technical and symbolic transformations of the medium while proposing new directions for research in the context of digital urbanism and cultural memory. Full article
(This article belongs to the Section Applied Arts)
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21 pages, 7084 KiB  
Article
Chinese Paper-Cutting Style Transfer via Vision Transformer
by Chao Wu, Yao Ren, Yuying Zhou, Ming Lou and Qing Zhang
Entropy 2025, 27(7), 754; https://doi.org/10.3390/e27070754 - 15 Jul 2025
Viewed by 343
Abstract
Style transfer technology has seen substantial attention in image synthesis, notably in applications like oil painting, digital printing, and Chinese landscape painting. However, it is often difficult to generate migrated images that retain the essence of paper-cutting art and have strong visual appeal [...] Read more.
Style transfer technology has seen substantial attention in image synthesis, notably in applications like oil painting, digital printing, and Chinese landscape painting. However, it is often difficult to generate migrated images that retain the essence of paper-cutting art and have strong visual appeal when trying to apply the unique style of Chinese paper-cutting art to style transfer. Therefore, this paper proposes a new method for Chinese paper-cutting style transformation based on the Transformer, aiming at realizing the efficient transformation of Chinese paper-cutting art styles. Specifically, the network consists of a frequency-domain mixture block and a multi-level feature contrastive learning module. The frequency-domain mixture block explores spatial and frequency-domain interaction information, integrates multiple attention windows along with frequency-domain features, preserves critical details, and enhances the effectiveness of style conversion. To further embody the symmetrical structures and hollowed hierarchical patterns intrinsic to Chinese paper-cutting, the multi-level feature contrastive learning module is designed based on a contrastive learning strategy. This module maximizes mutual information between multi-level transferred features and content features, improves the consistency of representations across different layers, and thus accentuates the unique symmetrical aesthetics and artistic expression of paper-cutting. Extensive experimental results demonstrate that the proposed method outperforms existing state-of-the-art approaches in both qualitative and quantitative evaluations. Additionally, we created a Chinese paper-cutting dataset that, although modest in size, represents an important initial step towards enriching existing resources. This dataset provides valuable training data and a reference benchmark for future research in this field. Full article
(This article belongs to the Section Multidisciplinary Applications)
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15 pages, 4108 KiB  
Article
A Multidisciplinary Non-Invasive Approach for the Examination of a Wooden Panel Painting
by Georgia T. Varfi, Spyridoula Farmaki, Georgios P. Mastrotheodoros, Dimitrios A. Exarchos, Anastasios Asvestas, Dimitrios F. Anagnostopoulos and Theodore E. Matikas
Heritage 2025, 8(7), 271; https://doi.org/10.3390/heritage8070271 - 9 Jul 2025
Viewed by 291
Abstract
In this article, a multidisciplinary methodological approach for studying a wooden panel painting is applied. The theoretical framework, within which this research has arisen, is the application of state-of-the-art non-destructive techniques for addressing issues concerning the constituting parts and composing materials of the [...] Read more.
In this article, a multidisciplinary methodological approach for studying a wooden panel painting is applied. The theoretical framework, within which this research has arisen, is the application of state-of-the-art non-destructive techniques for addressing issues concerning the constituting parts and composing materials of the artwork. Hereby, a post-Byzantine icon was studied, which was dated back to 1836. It is a painting executed on a wooden panel, with a decorated wooden frame attached. The artifact was thoroughly investigated through the application of infrared thermography (IRT), multispectral imaging (MSI), and macroscopic X-ray fluorescence spectrometry (MA-XRF). These analyses provided crucial information about the verso of the painting (i.e., the wooden panel and the frame) and allowed for the revelation of important details of the recto of the painting, which were not visible due to the presence of an old, decayed varnish. Additionally, through the detailed mapping of the distribution of various chemical elements on the recto of the painting and the frame, it was possible to identify the materials used and techniques employed. It is therefore shown that, when combined, the non-destructive methodologies in consideration can provide adequate information referring to the materiality and state of preservation of panel paintings, permitting the conservator to proceed to a tailored conservation treatment. Full article
(This article belongs to the Special Issue Recent Progress in Cultural Heritage Diagnostics)
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14 pages, 1322 KiB  
Article
Applying a Virtual Art Therapy System Based on the Michelangelo Effect in Patients with Spinal Cord Injury
by Michela Franzò, Sara De Angelis, Marco Iosa, Gaetano Tieri, Giorgia Corsini, Giovanni Generoso Cellupica, Valentina Loi, Fabiano Bini, Franco Marinozzi, Giorgio Scivoletto and Federica Tamburella
Sensors 2025, 25(13), 4173; https://doi.org/10.3390/s25134173 - 4 Jul 2025
Viewed by 344
Abstract
Background: Serious videogames have already demonstrated their positive impact on rehabilitation and of particular interest is the virtual reality (VR) technology. This immersive technology has been used in this study to create a neuroaesthetic experience based on the Michelangelo effect for the rehabilitation [...] Read more.
Background: Serious videogames have already demonstrated their positive impact on rehabilitation and of particular interest is the virtual reality (VR) technology. This immersive technology has been used in this study to create a neuroaesthetic experience based on the Michelangelo effect for the rehabilitation of patients with spinal cord injury. The aim of this study was to test the usability of a system for virtual art therapy and its capacity to assess patients’ deficits performances. Methods: A VR headset was worn by the participants who experienced a painting simulation of famous artworks (artistic stimuli) against a coloring canvas (non-artistic stimuli). The trajectories of the hand were studied to obtain different kinematic and spectral parameters to evaluate the user performances. A total of 13 healthy subjects and 13 patients with spinal cord injury participated in this study. Results: Significative differences were obtained for most of the parameters between the two groups, except for the normalized jerk and energy of the spectrum. Analysis in the frequency domain showed that both groups preferred horizontal movements for painting the canvas. The NASA and USEQ scores reported a comfortable and user-friendly system according to the patients’ point of view. Conclusions: The system can be a usable tool, the rehabilitative efficacy of which should be tested in patients with spinal cord injury. The kinematic and spectral parameters would allow for the evaluation of the performances alongside the clinical scales, distinguish pathological and physiological performances. Full article
(This article belongs to the Special Issue Sensors in 2025)
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23 pages, 3224 KiB  
Article
Inferring Cinematic Aesthetic Biases from the Statistics of Early Movies
by Daniel M. Grzywacz and Norberto M. Grzywacz
Entropy 2025, 27(7), 707; https://doi.org/10.3390/e27070707 - 30 Jun 2025
Viewed by 427
Abstract
Cinematic aesthetic values have not been studied as thoroughly as those in music and the visual arts. Three hypotheses for these values are that they are like those of artistic paintings, that they emphasize the spatial coherence of the optical flow, and that [...] Read more.
Cinematic aesthetic values have not been studied as thoroughly as those in music and the visual arts. Three hypotheses for these values are that they are like those of artistic paintings, that they emphasize the spatial coherence of the optical flow, and that they are temporally smooth. Here, we test these hypotheses and investigate other candidate aesthetic values by comparing the statistics of narrative movies and those obtained spontaneously. We perform these tests by using narrative movies from the early stages of cinematic history because these films are simple. We statistically compare these films with spontaneous movies of scenes from daily life. These statistical comparisons do not support the first hypothesis for early movies. The comparisons show that symmetry, balance, and image complexity (normalized Shannon entropy) are not different in early and spontaneous movies. For similar reasons, our data do not support the spatial coherence of early-movie optical flows as having cinematic aesthetic functions. However, in support of the third hypothesis, the temporal smoothness of luminance, but not of motions, appears to have cinematic aesthetic value. The data also uncovered two other cinematic aesthetic value candidates in both statistical surprise and spatial and temporal complexities. We discuss these candidates, pointing out similarities to music and the importance of film editing. Full article
(This article belongs to the Section Multidisciplinary Applications)
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17 pages, 4019 KiB  
Article
Oil-Painting Style Classification Using ResNet with Conditional Information Bottleneck Regularization
by Yaling Dang, Fei Duan and Jia Chen
Entropy 2025, 27(7), 677; https://doi.org/10.3390/e27070677 - 25 Jun 2025
Viewed by 693
Abstract
Automatic classification of oil-painting styles holds significant promise for art history, digital archiving, and forensic investigation by offering objective, scalable analysis of visual artistic attributes. In this paper, we introduce a deep conditional information bottleneck (CIB) framework, built atop ResNet-50, for fine-grained style [...] Read more.
Automatic classification of oil-painting styles holds significant promise for art history, digital archiving, and forensic investigation by offering objective, scalable analysis of visual artistic attributes. In this paper, we introduce a deep conditional information bottleneck (CIB) framework, built atop ResNet-50, for fine-grained style classification of oil paintings. Unlike traditional information bottleneck (IB) approaches that minimize the mutual information I(X;Z) between input X and latent representation Z, our CIB minimizes the conditional mutual information I(X;ZY), where Y denotes the painting’s style label. We implement this conditional term using a matrix-based Rényi’s entropy estimator, thereby avoiding costly variational approximations and ensuring computational efficiency. We evaluate our method on two public benchmarks: the Pandora dataset (7740 images across 12 artistic movements) and the OilPainting dataset (19,787 images across 17 styles). Our method outperforms the prevalent ResNet with a relative performance gain of 13.1% on Pandora and 11.9% on OilPainting. Beyond quantitative gains, our approach yields more disentangled latent representations that cluster semantically similar styles, facilitating interpretability. Full article
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28 pages, 1006 KiB  
Article
Next-Level Energy Management in Manufacturing: Facility-Level Energy Digital Twin Framework Based on Machine Learning and Automated Data Collection
by David Vance, Mingzhou Jin, Thomas Wenning, Sachin Nimbalkar and Christopher Price
Energies 2025, 18(13), 3242; https://doi.org/10.3390/en18133242 - 20 Jun 2025
Viewed by 353
Abstract
This research introduces an energy prediction framework at the facility level supported by automated data collection and machine learning models. It investigates whether reducing the prediction time scale allows for applying more complex machine learning techniques and if those techniques improve the prediction [...] Read more.
This research introduces an energy prediction framework at the facility level supported by automated data collection and machine learning models. It investigates whether reducing the prediction time scale allows for applying more complex machine learning techniques and if those techniques improve the prediction accuracy. The primary advantages of this framework lie in its automation of the energy prediction process and its provision of real-time energy data suitable for use in energy dashboards or digital twins. A sitewide dataset was created by combining 15 min energy and daily production data of five shops—assembly, battery, body (electric), body (gas), and paint—from a globally recognized electric vehicle manufacturer. Various machine learning models were evaluated on daily, weekly, and monthly datasets, including, in increasingly complex order: naïve, simple linear regression, net regularized generalized linear regression, principal component regression, k-nearest neighbor, random forest, and Bayesian regularized neural network. Compared to the current state-of-the-art energy consumption prediction for the industrial facility level, this research investigates more complex models and smaller time intervals for higher accuracy. The findings revealed that the more complex monthly models require a minimum of a year and a half of data to operate, while weekly models demand a year of data to achieve improved accuracy. Daily models can operate with only six months of data but exhibit poor performance due to reduced prediction accuracy of production. Key challenges identified include access to reliable, high-quality energy and production data and the initial demand for human labor. Full article
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24 pages, 484 KiB  
Article
Exploring Teachers’ Beliefs About ChatGPT in Arts Education
by Maria Kladaki, Apostolos Kostas and Panagiotis Alexopoulos
Educ. Sci. 2025, 15(7), 795; https://doi.org/10.3390/educsci15070795 - 20 Jun 2025
Viewed by 423
Abstract
In recent years, there has been growing interest in the pedagogical use of ChatGPT within arts education, including literature, drama, music, and painting. This research investigates the beliefs of primary and secondary school teachers who teach arts regarding the pedagogical use of ChatGPT, [...] Read more.
In recent years, there has been growing interest in the pedagogical use of ChatGPT within arts education, including literature, drama, music, and painting. This research investigates the beliefs of primary and secondary school teachers who teach arts regarding the pedagogical use of ChatGPT, exploring potential use, expected benefits or risks, support or rejection from the educational community, and possible barriers or facilitators, based on Ajzen’s Theory of Planned Behavior. A qualitative study was conducted with a sample of 67 teachers familiar with or having used ChatGPT in education. Data were collected through semi-structured interviews and analyzed thematically based on behavioral, normative, and control beliefs. Teachers identified expected benefits such as increased student interest, creativity, and critical thinking, as well as the facilitation of research and support for students with special needs. Concerns included copying, misinformation, and reduced critical thinking and creativity. They expressed ambivalence and skepticism toward ChatGPT’s pedagogical use, being optimistic about educational benefits and community support but concerned about future challenges. Finally, they emphasized the need for training and adequate technological infrastructure. The findings highlight the importance of equipping teachers with the necessary skills and institutional support to ensure the responsible and effective integration of AI in arts education. Full article
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19 pages, 463 KiB  
Article
The Nameless Dao in Concealment: Historical Transformations of the Quanzhen Seven Masters’ Image from Antiquity to Modernity
by Xiaoting Wang and Yixuan Li
Religions 2025, 16(6), 801; https://doi.org/10.3390/rel16060801 - 19 Jun 2025
Viewed by 520
Abstract
The Seven Masters of the Quanzhen 全真七子 sect served as central figures during the founding phase of Quanzhen Daoism and played key roles in the sect’s early development. Originally positioned as the “Northern Seven Perfected Ones” (Bei Qi Zhen 北七真), they were [...] Read more.
The Seven Masters of the Quanzhen 全真七子 sect served as central figures during the founding phase of Quanzhen Daoism and played key roles in the sect’s early development. Originally positioned as the “Northern Seven Perfected Ones” (Bei Qi Zhen 北七真), they were instrumental in propelling the prosperity and expansion of Quanzhen Daoism. Over time, their images subsequently proliferated across various media—including portrayals in stone inscription, painting, biography, and novel, undergoing transformations through inscriptions, paintings, biographies, and novels—transforming transmission channels from Daoist temples to stage performances and from street corners to modern screens. In the Jin and Yuan 金元 periods, Daoist biographies and inscriptions portrayed the Seven Masters as exemplary figures of Daoist practice. In folk novels and precious scrolls (Baojuan 宝卷) in the Ming 明 and Qing 清 dynasties, they were presented as legendary, divine immortals and distant ancestors available for narrative appropriation. In modern times—particularly due to the popularity of Jin Yong 金庸’s martial art novels—they completed their universalization as Daoist cultural resources blending chivalric ethos and entertainment value. Examining the evolution of the Seven Masters’ imagery, two fundamental implications emerge: First, this transformation was jointly shaped by the power structures, functional needs, and media forms of each era. Second, beneath the fluid representations from sacred patriarchs of the Jin–Yuan period to modern entertainment symbols, there is an enduring thread of Daoist transcendental consciousness. Full article
(This article belongs to the Special Issue The Diversity and Harmony of Taoism: Ideas, Behaviors and Influences)
34 pages, 43549 KiB  
Article
Ancestral Pueblo and Historic Ute Rock Art, and Euro-American Inscriptions in the Canyons of the Ancients National Monument, Colorado, USA
by Radoslaw Palonka, Polly Schaafsma and Katarzyna M. Ciomek
Arts 2025, 14(3), 60; https://doi.org/10.3390/arts14030060 - 26 May 2025
Viewed by 511
Abstract
In the central Mesa Verde region, rock art occurs on canyon walls and on boulders that are frequently associated with other archaeological remains. Moreover, rock art, together with architecture and pottery, is actually a primary source of archaeological information about the presence of [...] Read more.
In the central Mesa Verde region, rock art occurs on canyon walls and on boulders that are frequently associated with other archaeological remains. Moreover, rock art, together with architecture and pottery, is actually a primary source of archaeological information about the presence of various cultures in the area. It includes paintings and petroglyphs of Ancestral Pueblo farming communities, images and inscriptions made by post-contact Ute and possibly Diné (Navajo) people as well as historical inscriptions of the early Euro-Americans in this area. This paper presents the results of archaeological investigations at four large rock art sites from Sandstone Canyon, southwestern Colorado, within the Canyons of the Ancients National Monument (CANM). Methods of rock art recording included advanced digital photography, photogrammetry, terrestrial laser scanning (TLS), hand tracing, and consultations with members of indigenous societies and rock art scholars. Geophysics and sondage excavations were conducted at one site revealed important information about archaeology, environment, and geology of the area. Analysis of rock art and other material evidence aims to help reconstruct and understand the mechanisms and nature of cultural changes, migrations, and human–environmental interactions and later cross-cultural contacts between indigenous peoples and Anglo-American ranchers and settlers in southwestern Colorado and the US Southwest. Full article
(This article belongs to the Special Issue Advances in Rock Art Studies)
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24 pages, 9691 KiB  
Article
Penedo Do Gato Rock Art Shelter (Monterrei, NW Iberian Peninsula): In Situ and Laboratory Characterisation
by José S. Pozo-Antonio, Beatriz P. Comendador-Rey, Lucía Rodríguez-Álvarez, Pablo Barreiro and Daniel J. Jiménez-Desmond
Heritage 2025, 8(5), 176; https://doi.org/10.3390/heritage8050176 - 17 May 2025
Viewed by 1179
Abstract
This paper focuses on the study of the prehistoric art site at Penedo do Gato Rock Art Shelter (NW Spain) through an interdisciplinary collaboration. A key objective was to develop and implement a multi-analytical protocol for characterising prehistoric rock paintings with portable analytical [...] Read more.
This paper focuses on the study of the prehistoric art site at Penedo do Gato Rock Art Shelter (NW Spain) through an interdisciplinary collaboration. A key objective was to develop and implement a multi-analytical protocol for characterising prehistoric rock paintings with portable analytical techniques such as colour spectrophotometry and Raman spectroscopy. Additionally, three possible colouring materials collected during the archaeological survey of the site were investigated by means of X-ray diffraction, stereomicroscopy, and scanning electron microscopy (surface and cross-section modes) with the aim of determining their mineralogical composition and texture. The results indicate that hematite (α-Fe2O3) is the main component of the red motifs. Amorphous carbon has been found in several motifs. The presence of amorphous carbon on the rock suggests it may have been deposited onto the paintings by nearby bonfires; however, the potential use of charcoal as an additive in the red pigments to modify their colour should not be overlooked. Regarding the mineralogical composition of potential colouring materials, only one of the samples can be considered as a viable source. This was the only sample with a compact and homogeneous composition, rich in hematite, making it likely that, after grinding, it was used for painting. In contrast, the other collected samples either lacked hematite or contained only a thin layer of it. In these cases, it is unlikely that the hematite layer was extracted using tools to obtain the pigment. Full article
(This article belongs to the Section Archaeological Heritage)
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32 pages, 60017 KiB  
Article
Preservation of Money Art: Material Degradation and Evaluation of Biopolymer Coatings as Protective Strategies
by Andrea Macchia, Irene Angela Colasanti, Francesca Irene Barbaccia, Camilla Zaratti, Giuseppe Franchino, Jessica Scarpelli, Miriam Damiano and Federica Valentini
Appl. Sci. 2025, 15(10), 5355; https://doi.org/10.3390/app15105355 - 11 May 2025
Viewed by 644
Abstract
Money Art is a growing contemporary practice where artists transform banknotes into unique visual works. While conceptually powerful, these artworks present significant conservation challenges due to their fragile substrates and complex material compositions. This study investigates the degradation behaviour of UniPosca acrylic markers [...] Read more.
Money Art is a growing contemporary practice where artists transform banknotes into unique visual works. While conceptually powerful, these artworks present significant conservation challenges due to their fragile substrates and complex material compositions. This study investigates the degradation behaviour of UniPosca acrylic markers applied on zero-euro banknotes, drawing on the techniques of artist RichardHTT, and explores bio-based protective strategies suitable for their preservation. Laboratory samples were prepared to replicate the original artwork and subjected to accelerated ageing. A multi-analytical approach was employed, including multispectral imaging, Fourier trasform infrared (FTIR) and Raman spectroscopy, and scanning electron microscopy (SEM-EDS) colorimetric analysis. Thickness and adhesion properties were assessed with contact micrometry and peel tests, while wettability was evaluated through static contact angle measurements. Four biopolymer coatings, chitosan and chitosan–nanocellulose films with varying CNC concentrations, were evaluated for their transparency, mechanical stability, and compatibility with the substrate. Results showed that painted areas, especially those with blue and black pigments, experienced marked degradation, while, after coating application, samples demonstrated improved chromatic stability, hydrophobicity, and adhesion. Importantly, all coatings were fully removable via enzymatic cleaning with α-amylase, confirming their reversibility. This research highlights the potential of chitosan-based biocomposites as conservation materials for non-traditional artworks and contributes to developing tailored, reversible strategies for contemporary art preservation. Full article
(This article belongs to the Section Materials Science and Engineering)
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