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

Plant growth regulation by seed coating with films of alginate and auxin-intercalated layered double hydroxides

• Vander A. de Castro,
• Valber G. O. Duarte,
• Danúbia A. C. Nobre,
• Geraldo H. Silva,
• Vera R. L. Constantino,
• Frederico G. Pinto,
• Willian R. Macedo and
• Jairo Tronto

Beilstein J. Nanotechnol. 2020, 11, 1082–1091, doi:10.3762/bjnano.11.93

• to that observed for the control, suggesting that the M4 film allowed NAA to stay longer in contact with the seed, while not being degraded, and to improve plant cell development. In general, the use of polymeric films to cover seeds proved to be effective by promoting a better absorption of NAA

• . After coating the seeds with the polymeric films, as previously described, sowing was performed in sand trays as recommended by the Brazilian Rules for Seed Analysis [30]. Fifteen seeds were used for each trial and before sowing they were treated as described in Table 1 (except the control). Then they

Temperature-tunable lasing from dye-doped chiral microdroplets encapsulated in a thin polymeric film

• Gia Petriashvili,
• Mauro Daniel Luigi Bruno,
• Maria Penelope De Santo and
• Riccardo Barberi

Beilstein J. Nanotechnol. 2018, 9, 379–383, doi:10.3762/bjnano.9.37

• the field of sensors and for the development of anti-counterfeiting labels. Keywords: chiral microdroplets; dye-doped cholesteric liquid crystals; laser; polymeric films; temperature tuning; Introduction Liquid crystalline materials show peculiar optical properties. Cholesteric liquid crystals (CLCs

• cholesteric liquid-crystal microdroplets in order to obtain simultaneous Bragg-type laser emission at different wavelengths [17]. Following a drying procedure these emulsions can be transformed into free-standing polymeric films in which the lasing characteristics are preserved. In this work, we demonstrate

Vapor deposition routes to conformal polymer thin films

• Priya Moni,
• Ahmed Al-Obeidi and
• Karen K. Gleason

Beilstein J. Nanotechnol. 2017, 8, 723–735, doi:10.3762/bjnano.8.76

• date, the iCVD method has shown the highest rate of vapor depositing conformal polymeric films. The degree of film conformality is typically assessed using a combination of electron microscopy and other characterization techniques. A diverse array of applications have benefited from conformal polymer

Photocatalysis applications of some hybrid polymeric composites incorporating TiO₂ nanoparticles and their combinations with SiO₂/Fe₂O₃

• Andreea Laura Chibac,
• Tinca Buruiana,
• Violeta Melinte and
• Emil C. Buruiana

Beilstein J. Nanotechnol. 2017, 8, 272–286, doi:10.3762/bjnano.8.30

• in the polymeric matrix, as can be observed for the hybrid composites S1 and S4 in the inset of Figure 4a and Figure 4d, respectively. Therefore, it is clear that the introduction of the TiO2 nanoparticles in a polymer template avoids their agglomeration. The hybrid polymeric films, S1–S4 (thickness

• ). The improved photocatalytic activity of the polymeric films containing TiO2 hybridized with various elements could be explained through the synergic contributions of TiO2, the Si–O–Si phase or/and maghemite nanoparticles. It can be assumed that the polymeric films with hybridized TiO2 have an

• remained quite stable, decreasing by only 7%. So, it was demonstrated that the hybrid polymeric films with simple or hybridized TiO2 nanoparticles can find applications as catalytic materials for the degradation of hydroxybenzene derivatives under UV or visible light, with several cycles of utilization

Nanostructured surfaces by supramolecular self-assembly of linear oligosilsesquioxanes with biocompatible side groups

• Maria Nowacka,
• Anna Kowalewska and
• Tomasz Makowski

Beilstein J. Nanotechnol. 2015, 6, 2377–2387, doi:10.3762/bjnano.6.244

• silsesquioxane chains towards more mushroom-like shapes allows for the possibly for other LPSQ-COOH/X schemes. It was also found that priming the substrate with small organic compounds can alter the structure of the adsorbed polymeric films due to the change of specific interactions between the polymer and the

Nanoscale rippling on polymer surfaces induced by AFM manipulation

• Mario D’Acunto,
• Franco Dinelli and
• Pasqualantonio Pingue

Beilstein J. Nanotechnol. 2015, 6, 2278–2289, doi:10.3762/bjnano.6.234

• wide range of materials, namely ionic salts, metals, and semiconductors [6][7][8][9]. Regarding some crystalline materials, D’Acunto [10][11] and Filippov et al. [12] have successfully reproduced the experimental data via computational methods. Nevertheless, it is for polymeric films that the ripple

• up. More recently, (an example is reported in Figure 13) this principle has been successfully applied to avoid the nanoripple formation in polymeric films [62][63]. This demonstration represents an important achievement towards obtaining a AFM-based nanomanipulation tool that allows one to perform

• the ripple patterning only when it is desired. Conclusive remarks and future perspectives In conclusion, the phenomenon of nanoripple formation on polymeric films via contact with AFM probes has been extensively studied in the past decades. The key parameters ruling this physical process have been

Nanostructured superhydrophobic films synthesized by electrodeposition of fluorinated polyindoles

• Gabriela Ramos Chagas,
• Thierry Darmanin and
• Frédéric Guittard

Beilstein J. Nanotechnol. 2015, 6, 2078–2087, doi:10.3762/bjnano.6.212

• applications. Here, nine novel monomers derived from indole are synthesized to obtain these properties by electropolymerization. These monomers differ by the length (C4F9, C6F13 and C8F17) and the position (4-, 5- and 6-position of indole) of the perfluorinated substituent. Polymeric films were obtained with

• 6-position of indole) were synthesized and electropolymerized (Scheme 1). We report the influence of the fluorocarbon chain length and the substituent position on the surface morphology and hydrophobicity. Results and Discussion Electrodeposition In order to develop structured polymeric films, the

• resulting in polymeric films with a very low thickness. This may be explained by the reaction of amine groups of indole with the H+ ions released during the electropolymerization process. For these reasons, the deposition method has been changed and the depositions have been then performed at constant

Electrochemical behavior of polypyrrol/AuNP composites deposited by different electrochemical methods: sensing properties towards catechol

• Celia García-Hernández,
• Cristina García-Cabezón,
• Cristina Medina-Plaza,
• Fernando Martín-Pedrosa,
• Yolanda Blanco,
• José Antonio de Saja and
• María Luz Rodríguez-Méndez

Beilstein J. Nanotechnol. 2015, 6, 2052–2061, doi:10.3762/bjnano.6.209

• (obtained by chronopotentiometry). In all cases, films were deposited onto Pt and SS disks. The type of substrate will be denoted using a subscript (i.e., Ppy/AuNPs-C-CPPt or Ppy/AuNPs-T-CPSS). Once prepared, the polymeric films were extracted from the generation solution and washed thoroughly with water

Poly(styrene)/oligo(fluorene)-intercalated fluoromica hybrids: synthesis, characterization and self-assembly

• Giuseppe Leone,
• Francesco Galeotti,
• William Porzio,
• Guido Scavia,
• Luisa Barba,
• Gianmichele Arrighetti,
• Giovanni Ricci,
• Chiara Botta and
• Umberto Giovanella

Beilstein J. Nanotechnol. 2014, 5, 2450–2458, doi:10.3762/bjnano.5.254

• powders by synchrotron radiation XRD. Successively, the hybrids are dispersed in poly(styrene) through in situ polymerization. Such a procedure allows us to synthesize the materials from solution, to achieve solid films, and to characterize them by optical and morphologic techniques. The polymeric films

Fullerenes as adhesive layers for mechanical peeling of metallic, molecular and polymer thin films

• Maria B. Wieland,
• Anna G. Slater,
• Barry Mangham,
• Neil R. Champness and
• Peter H. Beton

Beilstein J. Nanotechnol. 2014, 5, 394–401, doi:10.3762/bjnano.5.46

• of this molecular adhesive layer provides a new route to transfer polymeric films from metal substrates to other surfaces as we demonstrate for an assembly of covalently-coupled porphyrins. Keywords: polymerisation; porphyrin; surface; thin film; transfer; Introduction The mechanical removal of

Template based precursor route for the synthesis of CuInSe₂ nanorod arrays for potential solar cell applications

• Mikhail Pashchanka,
• Jonas Bang,
• Niklas S. A. Gora,
• Ildiko Balog,
• Rudolf C. Hoffmann and
• Jörg J. Schneider

Beilstein J. Nanotechnol. 2013, 4, 868–874, doi:10.3762/bjnano.4.98

• substrates, e.g., polycrystalline alumina, low-cost glass or even flexible polymeric films [18][19]. Experimental In- and Cu-oximato complexes were synthesised as reported earlier and were used as metal cation sources [20][21]. A solution of Cu-oximato and In-oximato precursors, and selenourea in 1:1:3 molar

Growth behaviour and mechanical properties of PLL/HA multilayer films studied by AFM

• Cagri Üzüm,
• Johannes Hellwig,
• Narayanan Madaboosi,
• Dmitry Volodkin and
• Regine von Klitzing

Beilstein J. Nanotechnol. 2012, 3, 778–788, doi:10.3762/bjnano.3.87

• , introduced in the experimental section. The total penetration depth in a force measurement has already been used to determine the thickness of nanometre-scale coatings, e.g., lipid bilayers [29], but, to our knowledge, the total thickness of micron-scale polymeric films has not yet been extracted in this way

• response of polymeric films. Experimental Preparation of polyelectrolyte films The polyelectrolyte films PEI–(HA/PLL)n–HA, where n represents the number of deposited polymer pairs, were prepared by the layer-by-layer (LbL) technique [1] using a dipping robot (Riegler & Kirstein GmbH, Germany). The films