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Search for "polymer" in Full Text gives 735 result(s) in Beilstein Journal of Nanotechnology. Showing first 200.
Modeling and simulation of carbon-nanocomposite-based gas sensors
Beilstein J. Nanotechnol. 2025, 16, 90–96, doi:10.3762/bjnano.16.9
- nanomaterials, such as carbon nanotubes (CNTs), graphene, and carbon black, embedded within a polymer matrix [1]. The distinctive properties of carbon nanocomposites have positioned them as promising candidates for various applications, particularly in the development of advanced sensors. The small amounts of
- , mathematical models to predict the behavior of these sensors have been developed using numerical analysis software [1]. The polymer PEDOT: PSS aligns the surface of the CNT film by filling most of the gaps in the CNT network. The effective electrical conductivity at tube-to-tube junctions within the CNT
- network is increased as a result of this conductive ability of the polymer which helps CNT tubes make electrical connections [3]. Carbon nanotube sensors can be applied in various areas including environmental monitoring, biological sensors, and national security [4]. The property of the nanocomposite
Advanced atomic force microscopy techniques V
Beilstein J. Nanotechnol. 2025, 16, 54–56, doi:10.3762/bjnano.16.6
- al. present the application of AFM-based infrared nanospectroscopy to coated polymer surfaces [11]. The authors prepare thin films of SiOx on polypropylene surfaces by plasma-enhanced chemical vapor deposition (PE-CVD), which is commonly done to improve gas barrier properties of polypropylene. They
Bioinspired nanofilament coatings for scale reduction on steel
Beilstein J. Nanotechnol. 2025, 16, 25–34, doi:10.3762/bjnano.16.3
- bound to polymer, glass, and textiles. Figure 1A was adapted with permission from [5], Copyright 2020 American Chemical Society. This content is not subject to CC BY 4.0. (A) Rendering of medium-pressure, medium-temperature, constant sheer stress device. Maximum operating temperature of 200 °C and
A nanocarrier containing carboxylic and histamine groups with dual action: acetylcholine hydrolysis and antidote atropine delivery
Beilstein J. Nanotechnol. 2025, 16, 11–24, doi:10.3762/bjnano.16.2
- , resulting in the decomposition of the polymer. Fluorescein encapsulation and release under the influence of ACh To verify the degradation of p(Hist-CA) by ACh, fluorescein (Fl) was encapsulated into the nanocarrier cavity. Initially, 5 mg of Fl was dissolved in 15–20 mL of ethanol. Next, 7.3 μL of TO was
- than that of free Fl because of self-quenching within the confined core and light screening by the polymer shell. Notably, the addition of individual Hist-RA or CA-RA, or of their mixture does not significantly impact Fl emission intensity (Supporting Information File 1, Figure S6a). Similarly
- . %EE was calculated as 60%. Then, the polymer particles containing encapsulated Atr (Atr@p(Hist-CA)) were mixed with ACh (5 mM) before undergoing another round of dialysis for 1 h. The dialysate was once again removed under reduced pressure, and the amount of Atr released in response to ACh was
Biomimetic nanocarriers: integrating natural functions for advanced therapeutic applications
Beilstein J. Nanotechnol. 2024, 15, 1619–1626, doi:10.3762/bjnano.15.127
- differences in key characteristics. The National Nanotechnology Initiative (NNI) emphasizes that nanomaterials hold promising potential across various fields of knowledge [1][5]. Materials such as liposomes, nanoparticles, polymer–drug conjugates, inorganic noble metals, and quantum dots may improve
Natural nanofibers embedded in the seed mucilage envelope: composite hydrogels with specific adhesive and frictional properties
Beilstein J. Nanotechnol. 2024, 15, 1603–1618, doi:10.3762/bjnano.15.126
- typical part of plant cells, and its basic chemical composition includes cellulose, hemicelluloses, and pectic polysaccharides [44][45][46][47]. Cellulose is a linear polymer composed of β-1,4-linked ᴅ-glucose [47]. The cellulose chains are held together by intramolecular hydrogen bonds, forming cellulose
Electrochemical nanostructured CuBTC/FeBTC MOF composite sensor for enrofloxacin detection
Beilstein J. Nanotechnol. 2024, 15, 1522–1535, doi:10.3762/bjnano.15.120
- Polymer and Composite Materials, Ho Chi Minh City University of Technology, Vietnam National University, Ho Chi Minh City, 70000, Vietnam Center for High Technology Research and Development, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet Street, Cau Giay District, Ha Noi, Vietnam 10.3762
Integrating high-performance computing, machine learning, data management workflows, and infrastructures for multiscale simulations and nanomaterials technologies
Beilstein J. Nanotechnol. 2024, 15, 1498–1521, doi:10.3762/bjnano.15.119
Polymer lipid hybrid nanoparticles for phytochemical delivery: challenges, progress, and future prospects
Beilstein J. Nanotechnol. 2024, 15, 1473–1497, doi:10.3762/bjnano.15.118
- wide range of therapeutic properties, including antioxidant, anti-inflammatory, anticancer, and antimicrobial activities. However, their clinical application is often hindered by poor water solubility, low bioavailability, rapid metabolism, and instability under physiological conditions. Polymer lipid
- diseases. Keywords: bioavailability; phytochemical; polymer lipid hybrid nanoparticles; solubility; stability; surface modification; Introduction Phytochemicals are naturally occurring compounds found in plants (from the Greek word “phyton” meaning plant) [1]. These bioactive compounds are responsible
- , rapid metabolism, and instability under physiological conditions [9][10][11]. These challenges necessitate the development of advanced delivery systems to harness the full potential of phytochemicals in therapeutic applications. Polymer lipid hybrid nanoparticles (PLHNPs) represent an innovative class
Nanotechnological approaches for efficient N2B delivery: from small-molecule drugs to biopharmaceuticals
Beilstein J. Nanotechnol. 2024, 15, 1400–1414, doi:10.3762/bjnano.15.113
- ; intranasal delivery; liposomes; nanomedicine; nanostructured lipid carriers (NLCs); polymer nanoparticles; RNA delivery; solid lipid nanoparticles (SLNs); Introduction The central nervous system (CNS) consists of the brain and the spinal cord and is considered the body’s processing and control center. While
- 9.6 in porcine intestinal mucosa, while the apparent permeability was increased 2.2-fold. These results showed that thiolated cellulose could also be a candidate for enhancing mucoadhesion and permeability, and this polymer could also be studied regarding nasal mucosa permeation in the future [86
- least two NP classes to enhance the applications of the DDSs, which exhibit unique properties that are not possible by using only one single NP class [121]. For instance, there has been a growing interest in developing lipid–polymer hybrid NPs to benefit from the properties of different NP classes
A biomimetic approach towards a universal slippery liquid infused surface coating
Beilstein J. Nanotechnol. 2024, 15, 1376–1389, doi:10.3762/bjnano.15.111
- ][13], anodization [3][14], silane chemistry [18], and polymer multilayers [5][15]. While these methods are effective, there is often a requirement for a specific chemical environment, like a plasma processing step or the growth of an oxide layer. In this investigation, we aim to simplify the
Synthesis, characterization and anticancer effect of doxorubicin-loaded dual stimuli-responsive smart nanopolymers
Beilstein J. Nanotechnol. 2024, 15, 1189–1196, doi:10.3762/bjnano.15.96
- Belarus, Minsk, Belarus Faculty of Arts and Science, Chemistry Department, Aksaray University, Aksaray, Turkey 10.3762/bjnano.15.96 Abstract Nanopolymers represent a significant group of delivery vehicles for hydrophobic drugs. In particular, dual stimuli-responsive smart polymer nanomaterials might be
- loading levels [23]. Such smart polymer nanoparticles have been suggested in the literature, and their effectiveness has been proven by our group, especially for the loading and enhanced release of naringenin [20][24], another anticancer drug, and ʟ-asparaginase, a therapeutic enzyme [22]. Studies
Recent updates in applications of nanomedicine for the treatment of hepatic fibrosis
Beilstein J. Nanotechnol. 2024, 15, 1105–1116, doi:10.3762/bjnano.15.89
- FDA-approved biodegradable polymer. The R406-PLGA NPs (particle size of 159.7 nm) showed a significant downregulation of major inflammatory markers (CCL2, IL-1α, and IL-6) in vitro in murine bone marrow-derived macrophages. In an in vivo experiment using a methionine and choline-deficient (MCD) mouse
- nanoparticle-encapsulated curcumin (NanoCurc™) could ameliorate CCl4-induced hepatic injury and fibrosis through reduction of pro-inflammatory cytokines [54]. The polymer platform of NanoCurc™ consists of N-isopropylacrylamide, vinylpyrrolidone, and acrylic acid and was selected because of its capability to
Unveiling the potential of alginate-based nanomaterials in sensing technology and smart delivery applications
Beilstein J. Nanotechnol. 2024, 15, 1077–1104, doi:10.3762/bjnano.15.88
- reviewed in this paper. Future research scopes highlight existing challenges and solutions. Keywords: alginate; biomedical sensing; polymer nanoparticle; smart drug delivery; Review Introduction Sensors have received a lot of attention in a variety of applications, including health, pharmacy, the
- indicates that it belongs to the hydrogel family and is insoluble in water. Sodium alginate is an odorless, tasteless powder that can be white or yellowish. Alginate is a linear polymer composed of ᴅ-mannuronic acid (M) and ʟ-guluronic acid (G) residues [28]. Alginate can be an effective absorbent and
- nanoparticles, a nontoxic metal ion is chosen as the precursor. This precursor can be combined with alginate, a natural polymer derived from seaweed, in a purified natural solvent such as water. Then, a reducing agent is selected to reduce the metal ions and form nanoparticles. One environmentally friendly
Effect of wavelength and liquid on formation of Ag, Au, Ag/Au nanoparticles via picosecond laser ablation and SERS-based detection of DMMP
Beilstein J. Nanotechnol. 2024, 15, 1054–1069, doi:10.3762/bjnano.15.86
- affordable and accessible fabrication methods which guarantee stability and reproducibility along with accessible sample collection of SERS substrates. There has been significant interest in utilizing flexible materials such as paper, nitrocellulose, polymer film, cotton fabrics, adhesive tape, glass fibers
- ], Au NPs on electrospun polymer nanofibers [33], and alloy Ag/Au NPs on filter paper [44]. However, the size-dependent SERS performance of NPs over time needed to be investigated, and the optimization of substrates, depending on their stability over time, was aimed to be studied. This study
Interface properties of nanostructured carbon-coated biological implants: an overview
Beilstein J. Nanotechnol. 2024, 15, 1041–1053, doi:10.3762/bjnano.15.85
- tailored to the tissues where the implant will be placed [99]. Nevertheless, CNTs are able to regulate the cell proliferation better than other nanocarbon species. Patel et al. [100] coated polymer nanofibers with a 25 nm thick layer of MWCNTs modulating in vivo angiogenesis and bone regeneration
- synergistic effects of metal cations in GO coatings were extensively investigated [116][117]. Also, polymer blends were included instead of metal species [118][119]. ND coatings are also of particular interest for the prevention of biofilm formation [120] because of the reduced bacteria adhesion, which
Beyond biomimicry – next generation applications of bioinspired adhesives from microfluidics to composites
Beilstein J. Nanotechnol. 2024, 15, 965–976, doi:10.3762/bjnano.15.79
- could function as either a Velcro-like material or a biomimetic adhesive, depending on the modulus of the shape memory polymer [29]. Using MM3520, a shape memory polymer with a transition temperature of approximately 35 °C, and toggling between cool and warm states, the mechanical modulus could change
- early 2012, and the focus was then switched to specific applications integrating biomimetic adhesives rather than adhesive development. Compilation showing the assembly and integration of shape memory polymer dry adhesives with embedded heaters and soft robotic actuators. When in the soft state (T > 35
Therapeutic effect of F127-folate@PLGA/CHL/IR780 nanoparticles on folate receptor-expressing cancer cells
Beilstein J. Nanotechnol. 2024, 15, 954–964, doi:10.3762/bjnano.15.78
- materials. The polymers used in our study were made of pluronic F127. The polymers consist of three polymer blocks, including two PEO blocks and one PPO block. Because of the presence of F127 on the particles’ surface, the nanoparticles were effectively disseminated in our study. The hydrophobic block PPO
- 293 cells (Figure 2). However, when treating the cells with F127 polymer (2 mg/mL), the fluorescent signals were significantly reduced. The results proved that in the wells that were pretreated with F127 polymer, the polymer floated free in the cell culture medium, bound to the receptor, and competed
- in cancer treatment. Conclusion In this work, we designed F127-folate@PLGA nanoparticles capable of carrying CHL and IR780. The formulation approach has produced nanoparticles of extremely homogeneous size. The F127-folate polymer on the surface of nanoparticles made it easier for nanoparticles to
Electrospun nanofibers: building blocks for the repair of bone tissue
Beilstein J. Nanotechnol. 2024, 15, 941–953, doi:10.3762/bjnano.15.77
- method Electrospinning is an easy and fast method used to produce non-woven structures consisting of continuous ultrafine fibers with diameters ranging from micrometers down to nanometers. In this method, nanofibers are produced from a polymer solution or a melt with the help of electrostatic forces [41
- examined this method in detail. The first patent for turning a polymer solution into nanofibers by electrostatic forces was issued to J. F. Cooley in 1902. Between 1934 and 1944, Anton Formhals further developed the electrospinning method and equipment and obtained new patents [43]. In the 1990s
- 2. There are basically four main elements in an electrospinning assembly. These are (i) a high-voltage power source, (ii) a feeding unit (i.e., nozzle, syringe, or metal needle), (iii) a collector (i.e., plate, cylinder, disc, or rotating drum), and (iv) a viscous polymer (melt or solution) in
A review on the structural characterization of nanomaterials for nano-QSAR models
Beilstein J. Nanotechnol. 2024, 15, 854–866, doi:10.3762/bjnano.15.71
- remain the norm in nano-QSAR. In spite of the chemical complexity inherent to any extended system (such as a crystal or polymer), most descriptors are simpler than those found for organic molecules, focusing on simplified structural formulas or single elements. In most cases, the composition of a NM is
Electrospun polysuccinimide scaffolds containing different salts as potential wound dressing material
Beilstein J. Nanotechnol. 2024, 15, 781–796, doi:10.3762/bjnano.15.65
- polymer-based systems (<500 nm). Fourier-transform infrared spectroscopy was applied to verify the presence of salts in the scaffolds and to determine the interaction between the salt and the polymer. Another analysis, energy-dispersive X-ray spectroscopy, was carried out to determine strontium and zinc
- atoms in the scaffolds. Our result showed that the salts influence the mechanical properties of the polymer scaffold, both in terms of specific load capacity and relative elongation values. According to the dissolution experiments, the whole amount of strontium nitrate was dissolved from the scaffold in
- Polymer mixtures contain at least one component besides the polymer, such as nanoparticles, inorganic salts, or other polymers. These types of polymer mixtures are used for medical purposes; for example, metronidazole/poly(ε-caprolactone) (PCL)/alginate for dental implants or poly(lactic acid
AFM-IR investigation of thin PECVD SiOx films on a polypropylene substrate in the surface-sensitive mode
Beilstein J. Nanotechnol. 2024, 15, 603–611, doi:10.3762/bjnano.15.51
- refined and found its way into many and highly diverse fields of application, including virology, DNA nanotechnology, polymer science, and materials science [5][6][7][8][9]. The importance of AFM-IR steadily grew over the past decade and its development has been described in detail in several review
- compensation of the isolating polymer foils, the measurement was carried out in a 1.5 mbar N2 atmosphere. The survey spectra were recorded with a pass energy of 100 eV, while the core level spectra were taken with a 40 eV pass energy. The analysis was done using the software Unifit 2019 [17]. For all core
- at 1168 cm−1, all of which originate from the polymer foil [21][22]. In the spectra of the sample with a 50 nm SiOx film, a broad peak occurs around 1080 cm−1, which corresponds to Si–O–Si transversal oscillation modes [23][24][25]. In contrast, the sample with the thin SiOx film shows no broad peak
Photocatalytic degradation of methylene blue under visible light by cobalt ferrite nanoparticles/graphene quantum dots
Beilstein J. Nanotechnol. 2024, 15, 475–489, doi:10.3762/bjnano.15.43
- white light, and it has a yellow-brown colour, characteristic of GQDs prepared from the natural polymer starch [16]. The solution on the right was exposed to 254 nm UV light, and the colour changed to green. The typical absorption peak at 287 nm in the UV–vis spectrum of the aqueous GQD solution (Figure
Heat-induced morphological changes in silver nanowires deposited on a patterned silicon substrate
Beilstein J. Nanotechnol. 2024, 15, 435–446, doi:10.3762/bjnano.15.39
- ; silver nanowires; Introduction Metal nanowires (NWs) are promising key elements in a wide range of applications, including solar cells [1], smart windows [2], flexible sensors [3], touch screens [4], biocompatible polymer binders [5], temperature sensing [6], medical materials [7], and key elements of
On the mechanism of piezoresistance in nanocrystalline graphite
Beilstein J. Nanotechnol. 2024, 15, 376–384, doi:10.3762/bjnano.15.34
- transfer is required on glass in an aqueous medium [26]. Third, NCG fills the cracks present at the edges during spin coating the polymer and inhibits their propagation during the bending of the substrate. Raman spectroscopy is a powerful method to detect strain in graphene, which can be determined from
- Figure 2c, and the fit parameters are given in Table 1. The model was initially given for a matrix in which conducting particles are dispersed in a polymer matrix and are separated by tunnel junctions. In this model, the conductivity in the film is determined by the number of conductive paths, N, and the
- . Nevertheless, the overall shape of the second curve is similar to the first one. Figure 2d shows a typical stress vs strain curve for a polymer film [32]. The trend of the curve looks similar to the resistance vs strain curve for NCG in Figure 2a. Since polymers are insulators, literature on resistance vs
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