Article
Materials Science, Multidisciplinary
M. Krbal, V. Prokop, V. Cervinka, S. Slang, B. Frumarova, J. Mistrik, P. Provotorov, M. Vlcek, A. V. Kolobov
Summary: This study successfully prepared transparent, smooth, and defect-free amorphous thin films by spin-coating method, and found that both the refractive index and extinction coefficient decrease with increasing MoS3 content, while the contribution of absorption tails gradually becomes more intense and red-shifted.
MATERIALS RESEARCH BULLETIN
(2022)
Article
Materials Science, Multidisciplinary
Arul Carolin Amala, Ravi Vignesh, Gobalakrishnan Vasanthi Geetha, Rengasamy Sivakumar
Summary: High electrochromic coloration efficiency vanadium oxide thin films were synthesized using a simple sol-gel spin coating technique. Structural studies confirmed the formation of mixed phase and pure beta-V2O5 phase at different temperatures. The films exhibited improved optical properties at higher temperatures, while the electrochromic behavior was detected in a specific electrolyte solution.
PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE
(2021)
Article
Chemistry, Physical
Akshana Parameswaran Sreekala, Bindu Krishnan, Rene Fabian Cienfuegos Pelaes, David Avellaneda Avellaneda, Maria Isabel Mendivil Palma, Sadasivan Shaji
Summary: SnS nanoparticle colloids were obtained using pulsed laser ablation in liquid, and thin films were fabricated via spin-coating and annealing. The nanoparticles exhibited higher energy bandgap values compared to the thin films, but the films showed broader wavelength response in photodetection.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2022)
Article
Chemistry, Physical
Valentina Nigro, Elena Buratti, Francesca Limosani, Roberta Angelini, Franco Dinelli, Silvia Franco, Enrico Nichelatti, Massimo Piccinini, Maria Aurora Vincenti, Rosa Maria Montereali, Barbara Ruzicka
Summary: In recent decades, smart surfaces and surface coatings have become a subject of increasing interest. Microgel thin films, particularly those assembled from Poly(N-isopropylacrylamide) (PNIPAM) microgels, offer excellent control over morphology, elasticity, and hydrophobicity due to the high tunability of microgel properties. These systems have been widely studied in both theoretical and experimental research, and have shown potential for various nanotechnological applications.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2023)
Article
Physics, Multidisciplinary
Tian Ying-Yi, Wang Shuan-Hu, Luo Dian-Bing, Wei Xiang-Yang, Jin Ke-Xin
Summary: In this study, a series of BixY3-xFe5O12 films with different doping ratios were prepared by spin coating, and the effects of Bi3+ on the morphology, structure and spin transport properties of YIG films were investigated. The results showed that Bi doping does not change the crystal structure of YIG, but increases the absorption and decreases the bandgap of the films. X-ray photoelectron spectroscopy (XPS) confirmed the coexistence of Bi3+ and Bi2+. The regulation of Bi doping on spin transport was reflected in the significantly smaller magnon diffusion length of BixY3-xFe5O12 films compared to pure YIG films. Meanwhile, it was found that noticeable spin Hall magnetoresistance can still be detected in the Pt/BixY3-xFe5O12 heterostructure, and the highest amplitude was observed when x = 0.3.
ACTA PHYSICA SINICA
(2023)
Article
Materials Science, Multidisciplinary
N. R. Aswathy, JiJi Varghese, Shree Ranjini Nair, R. Vinod Kumar
Summary: The research investigated the structural, morphological, optical, and magnetic properties of Mn-doped NiO thin films, revealing that Mn doping alters the lattice parameters and introduces strain in NiO films, while increasing Mn content decreases the intensity of the Photoluminescence spectra.
MATERIALS CHEMISTRY AND PHYSICS
(2022)
Article
Materials Science, Multidisciplinary
Navid Chapman, Mingyu Chapman, William B. Euler
Summary: In this study, a predictive film thickness model based on an accepted equation of state was applied to the spin-coating of sub-micron poly(methylmethacrylate) viscous thin films from toluene. The concentration effects on density and dynamic viscosity of the spin-coating solution were closely examined. Process mapping was utilized to generate a three-dimensional design space for controlling film thickness.
Article
Physics, Multidisciplinary
T. Garmim, E. Bouabdalli, L. Soussi, Z. El Jouad, R. Mghaiouini, A. Louardi, B. Hartiti, M. El Jouad, M. Monkade
Summary: In this study, (Ni, Mg) co-doped CdS thin films were synthesized using the spin coating method. The Mg incorporation caused an increase in grain size and changes in optical properties with increasing Mg concentration in Cd0.98Ni0.02S. The research also investigated optical parameters and changes in electrical resistivity and conductivity with varying Mg concentrations.
Article
Chemistry, Physical
I Hotovy, L. Spiess, M. Mikolasek, I Kostic, M. Sojkova, H. Romanus, M. Hulman, D. Buc, V Rehacek
Summary: The study presents investigations on the structural, optical, and electrical properties of layered WS2 films synthesized on tungsten. The results show that the thickness of the W films and the sulfurization temperature affect the microstructure and electrical properties of the WS2 films.
APPLIED SURFACE SCIENCE
(2021)
Article
Materials Science, Ceramics
Hongfei Liu, Chenjun Zhang, Zhiping Zhang, Xiangdong Meng, Xianghua Zeng
Summary: Orthorhombic Sc2Mo3O12 films were successfully prepared via spin coating technique followed by annealing at 500-750 degrees C. The crystallinity of the films improved with higher post-annealing temperatures, demonstrating stable negative thermal expansion properties. The coefficients of thermal expansion in different directions were also determined, showing the overall shrinkage and expansion of the thin film.
CERAMICS INTERNATIONAL
(2021)
Article
Materials Science, Ceramics
S. S. Soumya, R. Vinodkumar, N. Unnikrishnan
Summary: This study discusses the structural, optical, and electrical properties of aluminum-doped tin oxide thin films prepared by sol-gel spin coating technique. Various analyses show that the films exhibit good characteristics in terms of structure, optical properties, and electrical conductivity. The conductivity type changes from n-type to p-type at higher aluminum doping concentrations.
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
(2021)
Article
Optics
Amr Attia Abuelwafa, H. M. Alsoghier, Sahar Elnobi, M. Dongol, T. Soga
Summary: The research calculated the structural distortions of NiTPP molecules and fabricated NiTPP/FTO thin films using different methods. The increase in film thickness led to larger crystallite size and more uniform film morphology. Analysis of Raman spectra and optical properties indicated that these films exhibit strong nonlinear optical characteristics.
Article
Materials Science, Ceramics
R. Gegova-Dzhurkova, D. Nesheva, V. Dzhurkov, M. Scepanovic, M. Grujic-Brojcin, I. Bineva, V. Mihailov, Z. Levi, E. Manolov, Z. V. Popovic
Summary: The study demonstrates that using hot air drying during the preparation of zinc oxide thin films can improve film properties, reduce internal stress, affect surface morphology, enhance crystallinity, and decrease defect density.
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
(2021)
Article
Materials Science, Multidisciplinary
Simona Liliana Iconaru, Mihai Valentin Predoi, Patrick Chapon, Sofia Gaiaschi, Krzysztof Rokosz, Steinar Raaen, Mikael Motelica-Heino, Daniela Predoi
Summary: In this study, cerium-doped hydroxyapatite (10Ce-HAp) coatings were successfully obtained using the spin coating method for the first time. The coatings showed uniformity, high strength, and strong antifungal properties, effectively inhibiting the adherence and growth of fungal cells.
Article
Chemistry, Physical
Christopher L. Hassam, Flavien Sciortino, Ngan T. K. Nguyen, Bhuvanesh Srinivasan, Katsuhiko Ariga, Franck Gascoin, Fabien Grasset, Takao Mori, Tetsuo Uchikoshi, Yohann Thimont, David Berthebaud
Summary: Polyethylenimine-stabilized Sb2S3 thin films prepared via electrophoretic deposition show strong adhesion, controllable thickness, and improved optical properties after annealing. The materials exhibit reduced band gap and increased refractive index and carrier concentration, demonstrating the potential of EPD for rapidly creating stable thin films.
ACS APPLIED ENERGY MATERIALS
(2021)
Article
Polymer Science
Oscar G. Galvez, Oscar Toledano, Francisco Javier Hermoso, Amelia Linares, Mikel Sanz, Esther Rebollar, Aurora Nogales, Mari Cruz Garcia-Gutierrez, Gonzalo Santoro, Izabela Irska, Sandra Paszkiewicz, Anna Szymczyk, Tiberio A. Ezquerra
Summary: Infrared spectroscopy and Broadband Dielectric Spectroscopy were used to study the dynamic characteristics of poly(trimethylene 2,5-furanoate) (PTF) and poly(trimethylene terephthalate) (PTT) below their glass transition temperatures. The results showed that PTT exhibited a multimodal beta relaxation, while PTF showed a monomodal one. The absorption bands in the infrared spectra showed small shifts in wavenumbers for both polymers, except for the band related to the stretching mode of the carbonyl group. The bands associated with -C--O stretching had different shapes, suggesting the presence of hydrogen bonds in PTF. Density Functional Theory calculations supported the experimental results, indicating an increase in the syn conformations of the 2,5-furandicarboxylic acid (FDCA) moiety with temperature in the amorphous state of PTF.
Article
Polymer Science
Edgar Gutierrez-Fernandez, Jose Sena-Fernandez, Esther Rebollar, Tiberio A. Ezquerra, Francisco J. Hermoso-Pinilla, Mikel Sanz, Oscar Galvez, Aurora Nogales
Summary: Ferroelectric polymer nanoparticles of PVDF were prepared using dialysis nano-precipitation. The nanoparticles showed piezoelectric response as observed by PFM. The ferroelectric behavior was attributed to the presence of ferroelectrically active crystalline phases of PVDF in the nanoparticles (mainly beta and gamma phases) as demonstrated by DSC, FTIR, and XRD. The combination of the preparation method and temperature treatment can tune the ferroelectric properties of PVDF homopolymer nanoparticles.
Article
Chemistry, Physical
Sandra Paszkiewicz, Izabela Irska, Agata Zubkiewicz, Konrad Walkowiak, Zbigniew Rozwadowski, Jerzy Dryzek, Amelia Linares, Aurora Nogales, Tiberio A. Ezquerra
Summary: In this study, a series of fully plant-based sustainable copolyesters, namely poly(butylene 2,5-furandicarboxylate)-block-poly(caprolactone)s (PBF-block-PCL)s, were successfully synthesized by melt polycondensation. The properties of these copolyesters, including melting behavior, thermal stability, and chain dynamics, were investigated. The results showed that the addition of PCL improved the thermal and thermo-oxidative stability and increased the flexibility of the chain, resulting in changes in mechanical properties. The synthesis method described in this study offers a facile approach to obtaining novel fully multiblock biobased copolyesters with potential industrial implementation capabilities.
Article
Materials Science, Biomaterials
Arturo Vera, Isidoro Martinez, Luiz Guilherme Enger, Bruno Guillet, Ruben Guerrero, Jose Manuel Diez, Olivier Rousseau, Marc Lam Chok Sing, Victor Pierron, Paolo Perna, Jaime J. Hernandez, Isabel Rodriguez, Ivo Calaresu, Anja Meier, Carmen Huck, Ana Dominguez-Bajo, Ankor Gonzalez-Mayorga, Elisa Lopez-Dolado, Maria C. Serrano, Laura Ballerini, Lucas Perez, Rodolfo Miranda, Stephane Flament, Maria Teresa Gonzalez, Laurence Mechin, Julio Camarero
Summary: We have developed an implantable neural interface based on anisotropic magnetoresistive (AMR) magnetic-field sensors, which have reduced size and high performance at body temperature. The sensors use La0.67Sr0.33MnO3 (LSMO) as a ferromagnetic material, engineered to have uniaxial anisotropy and large AMR output with low noise even at low frequencies. The LSMO sensors have been optimized to detect low magnetic signals from neural activity with a sensitivity of approximately 400%/T, making them suitable for implantable detectors.
ACS BIOMATERIALS SCIENCE & ENGINEERING
(2023)
Article
Materials Science, Multidisciplinary
Konrad Walkowiak, Sandra Paszkiewicz, Izabela Irska, Agnieszka Kochmanska, Kamil Dydek, Anna Boczkowska, Rafal Stanik, Mike Gude, Amelia Linares, Tiberio Ezquerra
Summary: Bionanocomposites based on PTF-b-F-PTMO block copolymers with different nanoparticles were synthesized and their properties were studied. The dispersion of nanoparticles, thermal properties, melt viscosity, mechanical properties, and conductivity were analyzed. The synthesized materials showed elastomeric behavior and improved mechanical properties compared to the neat matrix. These reinforced bionanocomposites have potential applications in fuel systems, bumpers, and cupholders.
ADVANCED ENGINEERING MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Patricia Martinez-Garcia, Esther Rebollar, Aurora Nogales, Mari Cruz Garcia-Gutierrez, Jose Sena-Fernandez, Tiberio A. Ezquerra
Summary: Fused filament fabrication, or 3D printing, and polymer nanopatterning by nanolithographic techniques are widely used in various fields, but they have not yet found a common niche for development. This study demonstrates the feasibility and potential convenience of combining these two technologies by using conventional 3D printing to create nanostructured polymer surfaces without the need for clean room conditions.
ADVANCED ENGINEERING MATERIALS
(2023)
Article
Biochemistry & Molecular Biology
Enrico Bianchi, Giulia Guidotti, Michelina Soccio, Valentina Siracusa, Massimo Gazzano, Elisabetta Salatelli, Nadia Lotti
Summary: In recent years, the increasing demand for petroleum-based plastic materials and the excessive exploitation of nonrenewable resources have led to poor management of their disposal and ecological issues caused by their dispersion in the environment. One innovative solution is the design of biobased and biodegradable polymers based on poly(lactic acid), aiming to improve the properties of poly(L-lactic acid) for sustainable packaging applications. Through a novel top-down approach, a copolymer called P(LLA50PeF50)-CE was successfully synthesized and showed improved thermal stability and reduced brittleness, making it suitable for flexible packaging. The copolymer also exhibited significant biodegradability within 60 days.
Article
Biochemistry & Molecular Biology
Giulia Guidotti, Michelina Soccio, Massimo Gazzano, Valentina Siracusa, Nadia Lotti
Summary: High molecular weight, fully biobased random copolymers of 2,5-furandicarboxylic acid (2,5-FDCA) containing different amounts of (1R, 3S)-(+)-Camphoric Acid (CA) were successfully synthesized and characterized. The addition of camphoric co-units led to modulation of the properties such as thermal, structural, mechanical, and barrier properties. The improved properties were associated with enhanced interchain interactions.
Article
Optics
Javier Prada-Rodrigo, Rene Rodriguez-Beltran, Tiberio A. Ezquerra, Pablo Moreno, Esther Rebollar
Summary: A study investigates the formation of Laser Induced Periodic Surface Structures (LIPSS) on poly(ethylene terephthalate) (PET) films deposited over gold substrates using near-infrared femtosecond pulsed laser irradiation. The influence of gold substrate roughness and PET film thickness on LIPSS formation is analyzed through computer simulations and experimental observations. The study suggests that the formation and behavior of Surface Plasmon Polariton (SPP) at the film-substrate interface are the leading mechanism contributing to LIPSS formation.
OPTICS AND LASER TECHNOLOGY
(2023)
Editorial Material
Polymer Science
Valentina Siracusa, Nadia Lotti, Michelina Soccio, Alexey L. Iordanskii
Article
Cell Biology
Chiara Argentati, Francesco Morena, Giulia Guidotti, Michelina Soccio, Nadia Lotti, Sabata Martino
Summary: Mechanotransduction is a molecular process that allows cells to convert physical stimuli from the external environment into biochemical pathways to control cellular shape and function. Understanding the molecular events involved in this process is still a challenge. Tissue engineering provides an opportunity to study the effect of physical stimuli on stem cells and the mechanotransduction pathways involved.
Article
Chemistry, Physical
Jing Cui, Aurora Nogales, Tiberio A. Ezquerra, Esther Rebollar
Summary: A bilayer approach is used to create laser-induced periodic surface structures on polymer thin films, even without light absorption at the laser's wavelength. The technique involves nanosctructuring a layer of poly(3-hexylthiophene-2,5-diyl) (P3HT) using 532 nm laser irradiation, and then covering it with a thin layer of a non-absorbing polymer called poly(vinylidene fluoride-trifluoro ethylene) (P(VDF-TrFE)), resulting in a grating-like structure on the surface. The thickness range of the upper layer that leads to the formation of these structures has been determined, and it has been found that a thickness greater than 40 nm inhibits the formation of periodic structures due to mechanical restrictions on P3HT rearrangement. The upper nanostructured surface layer also displays ferroelectric properties.
APPLIED SURFACE SCIENCE
(2023)