Biomimetic chitosan with biocomposite nanomaterials for bone tissue repair and regeneration

• Se-Kwon Kim,
• Sesha Subramanian Murugan,
• Pandurang Appana Dalavi,
• Sebanti Gupta,
• Sukumaran Anil,
• Gi Hun Seong and
• Jayachandran Venkatesan

Beilstein J. Nanotechnol. 2022, 13, 1051–1067, doi:10.3762/bjnano.13.92

• antibacterial activity was observed against Staphylococcus aureus and Escherichia coli [95]. Melatonin-loaded TiO2 nanotubes were synthesized by Lai et al. (2017). Subsequently, using a spin-based layer-by-layer approach, chitosan and gelatin-based films were applied. Further, an in vitro cell interaction study

• surface area, antimicrobial activity, mechanical strength, osteoconductive and osteoinductive properties. In this particular study, the scaffolds of chitosan/polyvinyl alcohol/graphene oxide/hydroxyapatite/gold films were used in an orthopaedic application. The mechanical strength of the developed

• -63 cells, Saos-2 cells, and human osteoblasts, demonstrating its significance in bone tissue engineering [54]. Lemos and colleagues synthesized nanocomposite films comprising chitosan and bioactive glass, as well as a hybrid composition of chitosan and bioactive glass. The chitosan with 20% of

Influence of water contamination on the sputtering of silicon with low-energy argon ions investigated by molecular dynamics simulations

• Grégoire R. N. Defoort-Levkov,
• Alan Bahm and
• Patrick Philipp

Beilstein J. Nanotechnol. 2022, 13, 986–1003, doi:10.3762/bjnano.13.86

• profiling SIMS to resolve thin films in multilayered samples [14]. Another example is TEM sample preparation, where the achievement of the highest lateral resolutions in the subsequent TEM analysis requires lamellae thicknesses between 10 and 20 nm, but goes along with a typical amorphous layer of 2 to 4 nm

Theoretical investigations of oxygen vacancy effects in nickel-doped zirconia from ab initio XANES spectroscopy at the oxygen K-edge

• Dick Hartmann Douma,
• Lodvert Tchibota Poaty,
• Alessio Lamperti,
• Stéphane Kenmoe,
• Abdulrafiu Tunde Raji,
• Alberto Debernardi and
• Bernard M’Passi-Mabiala

Beilstein J. Nanotechnol. 2022, 13, 975–985, doi:10.3762/bjnano.13.85

• semiconducting or insulating materials doped randomly or uniformly with magnetic impurities in the oxide matrix. A typical example are thin films of uniformly Fe-doped ZrO2 where dopant concentrations, x, from the diluted regime (i.e., x = 1–5 atom % [2]) to very high concentrations (up to x ≈ 25 atom %) have

• that of the monoclinic structure) [35]. Thus, our structural phase of reference in this work is cubic distorted fluorite zirconia since we are doping it and also due to the fact that actual experiments involving atomic layer deposition of TM-doped zirconia thin films revealed the cubic phase [26]. In

Bioselectivity of silk protein-based materials and their bio-inspired applications

• Hendrik Bargel,
• Vanessa T. Trossmann,
• Christoph Sommer and
• Thomas Scheibel

Beilstein J. Nanotechnol. 2022, 13, 902–921, doi:10.3762/bjnano.13.81

• coatings through fluorous media-assisted thermal treatment of stable, hydrophilic protein films [75]. One prominent natural route to prevent the colonization and infection with microbes on cells, tissues, and material surfaces is to block adhesion of bacteria and inhibit attachment to host cells. Microbial

• a residue substitution of aspartate with glutamate thus rendering an identical charge distribution, was applied as a control. Cell culture studies using Balb 3T3 fibroblasts revealed that the RGD peptide enhanced primary cell attachment with increased spread morphology and proliferation on films

• independently of chemical or genetic modification. The unmodified eADF4(C16) and eADF4(C16)-RGE control surfaces showed less or no cell interaction [148]. In addition, eADF4(C16)-RGD films allowed for adhesion and spreading of neonatal rat cardiomyocytes and hiPSC-derived cardiomyocytes, and further supported

Efficiency of electron cooling in cold-electron bolometers with traps

• Dmitrii A. Pimanov,
• Vladimir A. Frost,
• Anton V. Blagodatkin,
• Anna V. Gordeeva,
• Andrey L. Pankratov and
• Leonid S. Kuzmin

Beilstein J. Nanotechnol. 2022, 13, 896–901, doi:10.3762/bjnano.13.80

• superconductor/ferromagnet hybrid absorbers based on Al/Fe films, as the previous samples. However, there are different oxidation parameters. This work aims to improve our new fit methodology, which takes into account both leakage and Andreev currents and also uses the sixth power of phonon and electron

Self-assembly of C₆₀ on a ZnTPP/Fe(001)–p(1 × 1)O substrate: observation of a quasi-freestanding C₆₀ monolayer

• Guglielmo Albani,
• Michele Capra,
• Alessandro Lodesani,
• Alberto Calloni,
• Gianlorenzo Bussetti,
• Marco Finazzi,
• Franco Ciccacci,
• Alberto Brambilla,
• Lamberto Duò and
• Andrea Picone

Beilstein J. Nanotechnol. 2022, 13, 857–864, doi:10.3762/bjnano.13.76

• fullerene films stabilized directly on metal surfaces. Our results unveil a model system that could be useful in applications in which a quasi-freestanding monolayer of C60 interfaced with a metallic electrode is required. Keywords: fullerene; scanning tunneling microscopy; ultraviolet photoemission

• measurements and for modeling by ab initio calculations. Periodic and compact films are generally obtained when the molecules possess enough surface mobility, that is, when the diffusion energy (Ed) is low compared to the thermal energy kBT, where T is the substrate temperature and kB is the Boltzmann constant

•  2b shows a blowup of one fullerene domain, where individual C60 molecules are visible inside a hexagonal lattice with a lattice parameter of about 1 nm, a value very similar to that measured in C60 films stabilized on either metallic [51] or oxide [25] substrates. Figure 2c shows the fast Fourier

Ultrafast signatures of magnetic inhomogeneity in Pd_1−xFe_x (x ≤ 0.08) epitaxial thin films

• Andrey V. Petrov,
• Sergey I. Nikitin,
• Lenar R. Tagirov,
• Amir I. Gumarov,
• Igor V. Yanilkin and
• Roman V. Yusupov

Beilstein J. Nanotechnol. 2022, 13, 836–844, doi:10.3762/bjnano.13.74

• Abstract A series of Pd1−xFex alloy epitaxial films (x = 0, 0.038, 0.062, and 0.080), a material promising for superconducting spintronics, was prepared and studied with ultrafast optical and magneto-optical laser spectroscopy in a wide temperature range of 4–300 K. It was found that the transition to the

• inhomogeneities. The low-temperature fraction of the residual paramagnetic phase can be deduced from the magnitude of the slow reflectivity relaxation component. It is estimated as ≈30% for x = 0.038 and ≈15% for x = 0.062 films. The minimal iron content ensuring the magnetic homogeneity of the ferromagnetic

• state in the Pd1−xFex alloy at low temperatures is about 7–8 atom %. Keywords: magnetic inhomogeneities; PdFe alloy; thin epitaxial films; time-resolved magneto-optical Kerr effect; time-resolved optical spectroscopy; Introduction Superconductor-based technologies are promising for exaflop-scale

Temperature and chemical effects on the interfacial energy between a Ga–In–Sn eutectic liquid alloy and nanoscopic asperities

• Yujin Han,
• Pierre-Marie Thebault,
• Corentin Audes,
• Xuelin Wang,
• Haiwoong Park,
• Jian-Zhong Jiang and
• Arnaud Caron

Beilstein J. Nanotechnol. 2022, 13, 817–827, doi:10.3762/bjnano.13.72

• oxide [10]. This effect has also been used to trigger the reaction of thin oxide films at the liquid–vapor interface with liquid gallium alloys [11]. While the liquid–vapor interface of liquid gallium-based alloys has been well investigated, the wetting of liquid gallium alloys on different substrates

Optimizing PMMA solutions to suppress contamination in the transfer of CVD graphene for batch production

• Chun-Da Liao,
• Andrea Capasso,
• Tiago Queirós,
• Telma Domingues,
• Fatima Cerqueira,
• Nicoleta Nicoara,
• Jérôme Borme,
• Paulo Freitas and
• Pedro Alpuim

Beilstein J. Nanotechnol. 2022, 13, 796–806, doi:10.3762/bjnano.13.70

• B2 mixture yields more consistent electric properties of the graphene channel, thanks to a homogenous and reproducible process. Such characteristics ultimately translate into a consistent sensor performance, which is pivotal for industrial fabrication. Conclusion Monolayer graphene films and single

• 4.0 Torr was kept constant through the variable frequency-driven pumping system. The growth time for single graphene crystals (250–350 µm) and large-area graphene films (ca. 25 cm2) was 40 and 80 min, respectively. To finalize the process, an argon flush of 500 sccm was conducted to cool down samples

• synthesized graphene domains easy to be observed in an optical microscope equipped with a CCD camera (Supporting Information File 1, Figure S1a). Raman spectroscopy Large-area graphene films and single graphene crystals transferred onto SiO2/Si substrates were characterized by Raman microscopy (WITec GmbH

Recent advances in nanoarchitectures of monocrystalline coordination polymers through confined assembly

• Lingling Xia,
• Qinyue Wang and
• Ming Hu

Beilstein J. Nanotechnol. 2022, 13, 763–777, doi:10.3762/bjnano.13.67

• –liquid or air–liquid interfaces. After evaporation of the solvent, the monocrystalline coordination polymers were packed by the condensed polymer, forming free-standing films. The coordination polymers could also be grown on 1D polyimide fibers first [140]. Then, the 1D fibers could self-assemble into

• nanosheets spontaneously and precisely organized into films at the interface laminarly. The films could be easily transferred to other substrates, and showed superprotonic conductivity, which may be promising for fuel cells. The assembly process of 2D coordination polymer nanosheets could be confined inside

• MIL96−PDMS films on shaped aluminum foil. Figure 7b was reprinted with permission from [139], Copyright 2021, American Chemical Society. This content is not subject to CC BY 4.0. c) Optical micrograph and schematic illustration of the evaporation-directed with assembly with periodic cracks. Figure 7c

A nonenzymatic reduced graphene oxide-based nanosensor for parathion

• Sarani Sen,
• Anurag Roy,
• Ambarish Sanyal and
• Parukuttyamma Sujatha Devi

Beilstein J. Nanotechnol. 2022, 13, 730–744, doi:10.3762/bjnano.13.65

• ., hydrazine) as reductants or rapid heat treatment at high temperatures are required for the synthesis of electrochemically reduced GO (ERGO), controlled synthesis of ERGO films could be possible via optimization of electrochemical parameters. These parameters are the range of the applied voltage, numbers of

• bond disappeared in ERGO. The amount of residual oxygenated functional groups in ERGO films is likely to vary depending on the experimental conditions, such as applied potential, reduction times, and the electrolyte used [25]. The process parameters for electrochemical reduction were optimized to

Experimental and theoretical study of field-dependent spin splitting at ferromagnetic insulator–superconductor interfaces

• Peter Machon,
• Michael J. Wolf,
• Detlef Beckmann and
• Wolfgang Belzig

Beilstein J. Nanotechnol. 2022, 13, 682–688, doi:10.3762/bjnano.13.60

• the inner peak is broadened, and finally becomes a wide and flat band. Besides this, the self-consistency relation for thin films produces the typical step-like first-order phase transition at the critical δφ (here always plotted for the upper branch of Figure 2), while especially in the case ε’ = 1 a

Reliable fabrication of transparent conducting films by cascade centrifugation and Langmuir–Blodgett deposition of electrochemically exfoliated graphene

• Teodora Vićentić,
• Stevan Andrić,
• Vladimir Rajić and
• Marko Spasenović

Beilstein J. Nanotechnol. 2022, 13, 666–674, doi:10.3762/bjnano.13.58

• typically polydisperse, containing particles of various sizes, which is not optimal for applications. We employed cascade centrifugation to select specific particle sizes in solution and prepared thin films from those graphene particles using the Langmuir–Blodgett assembly. Employing centrifugation speeds

• of 3, 4, and 5 krpm, further diluting the solutions in different volumes of solvent, we reliably and consistently obtained films of tunable thickness. We show that there is a limit to how thin these films can be, which is imposed by the percolation threshold. The percolation threshold is

• wavelength of 660 nm is obtained for these films, which is in agreement with earlier works on Langmuir–Blodgett assembled ultrasonic-assisted liquid-phase exfoliated graphene. Our work demonstrates that films that are in all respects on par with films of graphene obtained through other solution-based

Revealing local structural properties of an atomically thin MoSe₂ surface using optical microscopy

• Lin Pan,
• Peng Miao,
• Anke Horneber,
• Alfred J. Meixner,
• Pierre-Michel Adam and
• Dai Zhang

Beilstein J. Nanotechnol. 2022, 13, 572–581, doi:10.3762/bjnano.13.49

• deposited on a MoS2 crystal surface. Using near-edge X-ray absorption (NEXAFS), it was observed a strong dichroism in FePc thin films thicker than 4.5 nm. The strongest intensity of the N 1s→π* orbital transition at grazing incidence implies that the molecules are predominantly flat-lying with respect to

Influence of thickness and morphology of MoS₂ on the performance of counter electrodes in dye-sensitized solar cells

• Lam Thuy Thi Mai,
• Hai Viet Le,
• Ngan Kim Thi Nguyen,
• Van La Tran Pham,
• Thu Anh Thi Nguyen,
• Nguyen Thanh Le Huynh and
• Hoang Thai Nguyen

Beilstein J. Nanotechnol. 2022, 13, 528–537, doi:10.3762/bjnano.13.44

• disulfide (MoS2) was prepared on substrates coated with fluorine-doped tin oxide (FTO) to substitute the platinum counter electrode (CE) for dye-sensitized solar cells (DSSCs). Herein, we synthesized layered and honeycomb-like MoS2 thin films via the cyclic voltammetry (CV) route. Thickness and morphology

• of the MoS2 thin films were controlled via the concentration of precursor solution. The obtained results showed that MoS2 thin films formed at a low precursor concentration had a layered morphology while a honeycomb-like MoS2 thin film was formed at a high precursor concentration. Both types of MoS2

• allows for the direct deposition of MoS2 thin films from liquid precursors onto various conducting substrates with easily controlled thickness and morphology. Several reports have already been published that describe the control of structure and morphology of electrodeposited MoS2 to maximize its

Design and characterization of polymeric microneedles containing extracts of Brazilian green propolis

• Camila Felix Vecchi,
• Rafaela Said dos Santos,
• Jéssica Bassi da Silva and
• Marcos Luciano Bruschi

Beilstein J. Nanotechnol. 2022, 13, 503–516, doi:10.3762/bjnano.13.42

• , microneedles have been developed to cross the stratum corneum and enable the use of the transdermal route in different therapies [6]. Propolis (PRP) has already been studied in wound healing when incorporated in many vehicles, such as ointments, emulsions, hydrogels, films, or as hydroalcoholic or glycolic

• yielded more malleable structures. Previous studies have shown that films containing PVA and propylene glycol are more malleable due to the breaking of hydrogen bonds by the effect of propylene glycol [34]. The factorial design chosen allowed us to evaluate the characteristics of the formulations

Zinc oxide nanostructures for fluorescence and Raman signal enhancement: a review

• Ioana Marica,
• Fran Nekvapil,
• Maria Ștefan,
• Cosmin Farcău and
• Alexandra Falamaș

Beilstein J. Nanotechnol. 2022, 13, 472–490, doi:10.3762/bjnano.13.40

• , enhanced Raman scattering for periodic ZnO-elevated Au dimer nanostructures [12] and enhanced fluorescence emission signals from Al-doped ZnO films [13] were obtained. The development of hybrid nanocomposites based on ZnO and noble metals for fluorescence and Raman signal enhancement has recently attracted

• . Numerous studies have demonstrated the enhancement of both near band edge (NBE) and defect emissions using ZnO decorated with metallic NPs [92][93]. The study in [92] showed a PL enhancement of the Au–ZnO heterojunction system by an order of magnitude when ZnO thin films were incorporated with gold

• Au NPs. Photoluminescence spectra of ZnO films were studied after doping them with 29% Au annealed at 300 °C in air. After Au incorporation, a strong increase of both UV and visible ZnO emission bands was obtained [94]. Another study [95] obtained 1.5-fold to 2.8-fold enhancements for Au-decorated

Tunable superconducting neurons for networks based on radial basis functions

• Andrey E. Schegolev,
• Nikolay V. Klenov,
• Sergey V. Bakurskiy,
• Igor I. Soloviev,
• Mikhail Yu. Kupriyanov,
• Maxim V. Tereshonok and
• Anatoli S. Sidorenko

Beilstein J. Nanotechnol. 2022, 13, 444–454, doi:10.3762/bjnano.13.37

• and parametric amplifiers. But these devices use nonlinear properties of thin superconducting films at large values of carrying currents comparable to the critical current. However, for our purposes, linear inductors are required. So we consider only the case of a small current in comparison with the

A non-enzymatic electrochemical hydrogen peroxide sensor based on copper oxide nanostructures

• Irena Mihailova,
• Vjaceslavs Gerbreders,
• Marina Krasovska,
• Eriks Sledevskis,
• Valdis Mizers,
• Andrejs Bulanovs and
• Andrejs Ogurcovs

Beilstein J. Nanotechnol. 2022, 13, 424–436, doi:10.3762/bjnano.13.35

• on the surface of the main CuO layer (f). XRD pattern of CuO films. The red diffractogram corresponds to the sample obtained by thermal oxidation and the black diffractogram corresponds to the sample obtained by chemical hydrothermal oxidation. (a) CV results for a nanostructured CuO film in 0.1 M

A chemiresistive sensor array based on polyaniline nanocomposites and machine learning classification

• Jiri Kroutil,
• Alexandr Laposa,
• Ali Ahmad,
• Jan Voves,
• Vojtech Povolny,
• Ladislav Klimsa,
• Marina Davydova and
• Miroslav Husak

Beilstein J. Nanotechnol. 2022, 13, 411–423, doi:10.3762/bjnano.13.34

• Scikit-learn, which is one of the most popular machine learning libraries of python. Anaconda installer for Python 3.8 was used to run all the libraries and Jupyter Notebooks. This work contains parts from the thesis of J. Kroutil, "Gas sensor array with nanocomposite films", Czech Technical University

Micro- and nanotechnology in biomedical engineering for cartilage tissue regeneration in osteoarthritis

• Zahra Nabizadeh,
• Mahmoud Nasrollahzadeh,
• Hamed Daemi,
• Mohamadreza Baghaban Eslaminejad,
• Ali Akbar Shabani,
• Mehdi Dadashpour,
• Majid Mirmohammadkhani and
• Davood Nasrabadi

Beilstein J. Nanotechnol. 2022, 13, 363–389, doi:10.3762/bjnano.13.31

• films (nanofiber composites) coated with PLDLA nanofibers on the behavior of bovine chondrocytes [109]. The researchers observed that electrospun nanofibers supported the adhesion of cells and maintained the chondrocyte phenotype. Besides, the adhesivity and mechanics of the nanofiber-based scaffolds

• , and OH) and surface roughness to CNT, Antonioli et al. used oxygen plasma treatment and fabricated novel superhydrophilic VA–CTN films. This treatment could increase the wettability of the nanofilms to acquire appreciable cytocompatibility [134]. The chondrocytes expressed major chondrogenic markers

Selected properties of Al_xZn_yO thin films prepared by reactive pulsed magnetron sputtering using a two-element Zn/Al target

• Witold Posadowski,
• Artur Wiatrowski,
• Jarosław Domaradzki and
• Michał Mazur

Beilstein J. Nanotechnol. 2022, 13, 344–354, doi:10.3762/bjnano.13.29

• Witold Posadowski Artur Wiatrowski Jaroslaw Domaradzki Michal Mazur Wroclaw University of Science and Technology, Faculty of Electronics, Photonics and Microsystems, Janiszewskiego 11/17, 50-372 Wrocław, Poland 10.3762/bjnano.13.29 Abstract AlxZnyO thin films were obtained by reactive pulsed

• magnetron sputtering. A two-element Zn/Al planar target was used as source material prepared in the form of a Zn disc (100 mm diameter) with Al rings pressed into its surface. The sputtering processes were carried out in a mixture of argon and oxygen. The films were deposited with a discharge power of PE

• = 400 W, which corresponded to a power density on the target surface of approximately 5 W/cm2. The films were deposited on glass strip substrates, placed symmetrically over the target, making it possible to obtain films with different composition and thickness. The film sheet resistance was measured as

Controllable two- and three-state magnetization switching in single-layer epitaxial Pd_1−xFe_x films and an epitaxial Pd_0.92Fe_0.08/Ag/Pd_0.96Fe_0.04 heterostructure

• Igor V. Yanilkin,
• Amir I. Gumarov,
• Gulnaz F. Gizzatullina,
• Roman V. Yusupov and
• Lenar R. Tagirov

Beilstein J. Nanotechnol. 2022, 13, 334–343, doi:10.3762/bjnano.13.28

• , extending its functionality. Palladium–iron alloys Pd1−xFex with x < 0.10 are of strong practical interest for such MJJ and SSV structures [13][14][15][16][17] as a material for weak ferromagnetic links with tunable magnetic properties [18]. Epitaxial films of Pd1−xFex alloys with low iron content x are

• easy-plane ferromagnets with four-fold anisotropy in the film plane [18][19]. Our conjecture is a possibility to switch the magnetic moment of a Pd1−xFex alloy film between the steady directions (90° apart) as it had been done with epitaxial iron films [20][21][22]. To realize this idea, it is

• magnetic moment by 90° in epitaxial Pd1−xFex films has not been yet explored. In [18][19], based on magnetometry data, it was assumed that magnetization reversal occurs as a result of the coherent rotation of the magnetic moment by 180°; and in the study of the Pd0.96Fe0.04/VN/Pd0.92Fe0.08 structure [23

A broadband detector based on series YBCO grain boundary Josephson junctions

• Egor I. Glushkov,
• Alexander V. Chiginev,
• Leonid S. Kuzmin and
• Leonid S. Revin

Beilstein J. Nanotechnol. 2022, 13, 325–333, doi:10.3762/bjnano.13.27

• deposition of YBaCuO films on a bicrystal substrate [25]. This problem can be mitigated by using ion irradiation [4][18][26] or step-edge junction technology [19], which will significantly increase the receiving properties and efficiency of the JJ series at high frequencies. While the integral received power

Interfacial nanoarchitectonics for ZIF-8 membranes with enhanced gas separation

• Season S. Chen,
• Zhen-Jie Yang,
• Chia-Hao Chang,
• Hoong-Uei Koh,
• Sameerah I. Al-Saeedi,
• Kuo-Lun Tung and
• Kevin C.-W. Wu

Beilstein J. Nanotechnol. 2022, 13, 313–324, doi:10.3762/bjnano.13.26

• films were synthesized via an interfacial method, while an interfacial method and a counter-diffusion method were adopted to synthesize α-Al2O3-supported ZIF-8 membranes for CO2/N2 gas separation. Materials and Methods Chemicals Zinc nitrate hexahydrate, 2-methylimidazole (2-MIM), sodium formate of

• reagent grade, methanol and 1-octanol of analysis grade were purchased from Sigma-Aldrich. Deionized water produced with a Merck Millipore system was used. The α-Al2O3 disks (30 mm in diameter and 1 mm in thickness) were purchased from Fraunhofer IKTS. Synthesis of ZIF-8 free-standing films Zinc nitrate

• -ray diffraction were measured on a Rigaku Ultima IV with Cu Kα radiation (λ = 1.5418 Å) to check the crystallinity of the synthesized ZIF-8 thin films. The morphology of the supports, the free-standing thin films, and the supported membranes was observed by FE-SEM (NovaTM NanoSEM 230). The elemental