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Search for "water" in Full Text gives 1592 result(s) in Beilstein Journal of Nanotechnology. Showing first 200.
Ultrathin water layers on mannosylated gold nanoparticles
Beilstein J. Nanotechnol. 2025, 16, 2183–2198, doi:10.3762/bjnano.16.151
- hydrophobic tips. While VSFG indicated preferential hydration of the dimannoside and proved conformational changes in the organic ligands, AFM provided sub-nanometer changes in particle topography due to water adsorption. In general, the dimannoside nanoparticles condense ultrathin water layers upon humidity
- increase. In contrast, we found that the water adsorption on the oligo(ethylene glycol) particles depends little on humidity. Our insights into structural changes on glyconanoparticles and the hydration properties of glycosylated particles are of application value for biosensors and help model the
- transmission of airborne viruses, such as influenza. Keywords: AFM; humidity; hydrophilicity; hydrophobicity; nanoparticles; sum frequency generation spectroscopy; viruses; water; wetting; Introduction Gold nanoparticles (AuNPs) have been a staple in biomedical and biophysical research [1][2] for almost a
Missing links in nanomaterials research impacting productivity and perceptions
Beilstein J. Nanotechnol. 2025, 16, 2168–2176, doi:10.3762/bjnano.16.149
- contaminating water, air, and soil, even when strict preventive measures are in place. Moreover, the environmental pollution caused by nanomaterials after their lifecycle, along with the chemicals used in their synthesis, is much more hazardous; up to a thousand times more compared to their bulk counterparts
Microplastic pollution in Himalayan lakes: assessment, risks, and sustainable remediation strategies
Beilstein J. Nanotechnol. 2025, 16, 2144–2167, doi:10.3762/bjnano.16.148
- in the ecologically sensitive Himalayan lakes, posing a threat to biodiversity, water quality, and human habitation. These high-altitude freshwater ecosystems are being increasingly polluted through human use, tourism, glacier melt, and atmospheric deposition. Microplastic quantification in such
- pollution; nanotechnology; remediation; Review 1 Introduction The Himalayan lakes, often known as the “Water Towers of Asia,” serve an important role in biodiversity conservation, downstream hydraulic management, and supplying freshwater supplies to millions of people. Sau et al. explain that Pangong
- increasing load of MPs in inland water bodies, for example, rivers, lakes, and estuaries [5]. For South Asia, especially, high MP loads in major river systems such as the Ganges and Brahmaputra have all been driven by rapid urbanization, poor plastic waste management, and hydrological connectivity [6]. Yet
Quality by design optimization of microemulsions for topical delivery of Passiflora setacea seed oil
Beilstein J. Nanotechnol. 2025, 16, 2116–2131, doi:10.3762/bjnano.16.146
- address these challenges, nanotechnology-based delivery systems, particularly microemulsions (MEs), offer a promising solution. Microemulsions are thermodynamically stable, isotropic mixtures typically composed of oil, water, surfactants, and co-surfactants [6]. Their spontaneous formation, high
- incompatibility among the excipients, such as the lowering of degradation temperatures. The thermal events observed in the DTG and DSC curves correspond to the loss of free water (≈98 °C), solvation water (≈110 °C), and thermal degradation of the oil phase (≈417 °C), overlapping with the degradation profiles of
- of the MEgel could not be determined. However, NaCMC solutions exhibit negligible surface activity and typically maintain surface tension values close to that of water [48]. Rheological analysis Rheological profiling provides key insights into the behavior of formulations under applied stress or
Molecular and mechanical insights into gecko seta adhesion: multiscale simulations combining molecular dynamics and the finite element method
Beilstein J. Nanotechnol. 2025, 16, 2055–2076, doi:10.3762/bjnano.16.141
- microscopy (AFM) experiments. Our investigation into how gecko keratin interacts with hydrophilic and hydrophobic substrates [12] supported the importance of the water-mediating effect [10] and elucidated mechanistic differences depending on surface chemistry. A particle-based mesoscale model of a single
- gecko keratin [11]. It also helped clarify other aspects of humidity-enhanced adhesion, revealing that keratin softening due to water uptake accounts for only a minor part of the increase in adhesion on very smooth surfaces [13]. The present paper builds on our previous research and extends the
Stereodiscrimination of guests in chiral organosilica aerogels studied by ESR spectroscopy
Beilstein J. Nanotechnol. 2025, 16, 2034–2054, doi:10.3762/bjnano.16.140
- , followed by crystallization. The precipitate is filtered off and washed with acetone. (The acetone phase can be used to obtain (−)-3CP). The filtrate is dissolved in water, acidified with hydrochloric acid to pH 3 and extracted three times with diethyl ether. The ether phase is dried with MgSO4, and the
Beyond the shell: exploring polymer–lipid interfaces in core–shell nanofibers to carry hyaluronic acid and β-caryophyllene
Beilstein J. Nanotechnol. 2025, 16, 2015–2033, doi:10.3762/bjnano.16.139
- inflammatory response during wound healing [32][33]. Chemically, βCp is characterized as a natural bicyclic sesquiterpene found in several plants and essential oils, and as expected for compounds of this class, it exhibits characteristic volatility and low solubility in water [34]. To address these limitations
- core removal, the fibers exhibited a filled core structure, as depicted in Figure 6A. Sequential washing with water and ethanol, followed by drying and cryofracture, effectively solubilized and removed the core material, yielding hollow fiber structures (Figure 6B). These observations confirmed the
- to increased water ingress through the pores, facilitating access to the core [58]. This possibility is also described by Wang and Xu (2018), who successfully prepared tea polyphenol-loaded porous core–shell fibers by controlling coaxial electrospinning parameters [56]. ATR-FTIR spectroscopy has been
The cement of the tube-dwelling polychaete Sabellaria alveolata: a complex composite adhesive material
Beilstein J. Nanotechnol. 2025, 16, 1998–2014, doi:10.3762/bjnano.16.138
- Milli-Q water drop. Antisense digoxigenin (DIG)-labelled RNA probes were synthesized with DIG RNA Labelling Kit (Roche) with T7 RNA polymerase and DIG–dUTP. In situ hybridization was performed according to the protocol of Lengerer and colleagues [30]. The RNA probes were used at a concentration of 0.2
Laser ablation in liquids for shape-tailored synthesis of nanomaterials: status and challenges
Beilstein J. Nanotechnol. 2025, 16, 1963–1997, doi:10.3762/bjnano.16.137
- formation of iron oxide nanowires was reported only in case of ablation with a 248 nm laser of iron powder suspended in methanol, while other solvents (including water, ethanol, isopropanol, and glycol) resulted in only spherical NPs. Moreover, ablation using a 532 nm laser produced spherical NPs in all the
- relatively short periods of time, produces spherical NPs that act as seeds during the growth of nonspherical nanostructures. Such approach has been demonstrated in [26] for the production of PbO nanosheets with thickness less than 15 nm by laser ablation of a lead target in water. After the initial stage
- femtosecond laser ablation of ZnSe powder in water. The transformation to nanowires, which were 100–300 nm in diameter and 50 μm long, was observed during ageing for a week. Furthermore, the authors applied air bubbling through the solution to induce change of nanowires into hollow nanotubes, which is
PEGylated lipids in lipid nanoparticle delivery dynamics and therapeutic innovation
Beilstein J. Nanotechnol. 2025, 16, 1914–1930, doi:10.3762/bjnano.16.133
- hydrophobic segment to act as a hydrophilic shield [80]. The rationale was that the highly water-soluble and flexible pSar chains could sterically block antibody access to the PEG domain, thereby reducing immune recognition. ELISA showed that the absorbance signal from anti-PEG IgG dropped from over 1.5 to
Targeting the vector of arboviruses Aedes aegypti with nanoemulsions based on essential oils: a review with focus on larvicidal and repellent properties
Beilstein J. Nanotechnol. 2025, 16, 1894–1913, doi:10.3762/bjnano.16.132
- arises. In this context, natural produts such as essential oils (EOs) have been studied for their larvicidal and repellent properties against Aedes aegypti, due to the presence of compounds such as terpenoids and phenols. However, the usage of EOs is limited due to some properties such as poor water
- stress, being easily degradable or evaporated upon exposure to air, light, heat, and humidity during processing, use, or storage [27][28]. Their volatile nature, susceptibility to oxidation, and insolubility in water limit their industrial application [29]. To overcome these limitations
- ]. Furthermore, they increase the water solubility of poorly soluble compounds, improve the dispersion of essential oils in vector control, and provide a controlled release of the bioactives. Finally, these systems can be obtained at low cost and through more sustainable technologies [36]. Given these advantages
Self-assembly and adhesive properties of Pollicipes pollicipes barnacle cement protein cp19k: influence of pH and ionic strength
Beilstein J. Nanotechnol. 2025, 16, 1863–1872, doi:10.3762/bjnano.16.129
- 48 h. After all incubations, the protein solution was aspirated, wells were washed three times with dH2O water for 5 min each, and Coomassie Blue stain was added for 15 min, followed by three destaining steps for 5 min each. Experiments were performed in triplicate, and wells were viewed on an
Current status of using adsorbent nanomaterials for removing microplastics from water supply systems: a mini review
Beilstein J. Nanotechnol. 2025, 16, 1837–1850, doi:10.3762/bjnano.16.127
- Nguyen Thi Nhan Tran Le Luu Master Program in Water Technology, Reuse and Management, Vietnamese German University, Ho Chi Minh City, Vietnam 10.3762/bjnano.16.127 Abstract The widespread use of plastic has led to microplastics (MPs) being released in many water sources. MP contamination in water
- supply systems is a global concern due to their persistence and ability to adsorb toxic pollutants. Despite having effectiveness, conventional water treatment processes still have limited efficiency in removing MPs, especially smaller particles. Thus, it requires researchers to develop effective and
- sustainable strategies to deal with this matter. Many studies have shown that adsorbent nanomaterials have potential for the removal of MPs from water. This review evaluates the current status of using adsorbent nanomaterials in removing MPs from water supply systems. It discusses the occurrences and removal
Phytol-loaded soybean oil nanoemulsion as a promising alternative against Leishmania amazonensis
Beilstein J. Nanotechnol. 2025, 16, 1826–1836, doi:10.3762/bjnano.16.126
- encapsulate bioactive molecules have proven effective against trypanosomatids [20][21] especially Leishmania spp. [22][23]. Among these systems, nanoemulsions (NEs) are one of the most common types. They are colloidal dispersions of two immiscible liquids – typically oil and water – stabilized by emulsifying
- -water (O/W) nanoemulsions is more effective when the droplets are spherical and have diameters close to 200 nm. This enhanced effect has been attributed to increased Laplace pressure, which refers to the pressure difference between the interior and exterior of a curved interface, and leads to higher
- , Brazil); soybean oil (Sigma-Aldrich, Brazil); Tween® 80 (Sigma-Aldrich, Brazil); purified water (obtained from a reverse osmosis purification equipment, model OS50 LX, Gehaka, Brazil) were used for nanoemulsion preparation. Mammalian cells were cultured in DMEM, High Glucose (Life Technologies, Cat
Piezoelectricity of layered double hydroxides: perspectives regarding piezocatalysis and nanogenerators
Beilstein J. Nanotechnol. 2025, 16, 1812–1817, doi:10.3762/bjnano.16.124
- range, allowing for the adjustment of key characteristics. Another specific feature of LDHs is their ability to delaminate in water and organic solvents after pretreatment to separate nanosheets. The latter is important in connection with the discovery of piezoelectric properties in two-dimensional
- emerging area of catalysis utilizes the ability of piezoelectric materials to convert mechanical energy into electrical energy for subsequent electrochemical reactions [13]. Liu et al. suggested that ultrathin Ni/Fe-LDH modified with polyethylene glycol (PEG) for better water solubility and
Electrical, photocatalytic, and sensory properties of graphene oxide and polyimide implanted with low- and medium-energy silver ions
Beilstein J. Nanotechnol. 2025, 16, 1794–1811, doi:10.3762/bjnano.16.123
- conductivity, the implantation of silver ions can also significantly affect the interaction of the material with water molecules, thereby improving its sensing response to changes in air humidity [13]. By modifying the chemical composition and microstructure of the surface, the affinity of the material for air
- ]. At the same time, however, polar groups, which are crucial for the adsorption of water molecules, are not eliminated; on the contrary, their spatial arrangement and chemical accessibility may be favored by implantation. This results in a higher adsorption capacity and a faster response to changes in
- relative humidity [16]. In addition to improving the affinity for water vapor, the implantation of Ag ions also translates into changes in optical and photochemical properties of the material, such as photocatalytic properties [17]. The modified electronic structure, characterized by a narrowing of the
Exploring the potential of polymers: advancements in oral nanocarrier technology
Beilstein J. Nanotechnol. 2025, 16, 1751–1793, doi:10.3762/bjnano.16.122
- NPs are often obtained through emulsification/solvent diffusion techniques, facilitated by its water solubility and gel-forming capacity in the presence of divalent cations that support the encapsulation of hydrophilic drugs. Dialysis methods, in turn, are particularly suited for amphiphilic
- properties is its Tg, which determines the point at which the polymer transitions from a rigid, glassy state to a more flexible, rubbery state as the mobility of the polymer chains increases with rising temperature. Above Tg, the polymer becomes rubbery, leading to increased rates of water and drug mass
- , drug release from the polymer matrix can proceed through various mechanisms after in vivo administration. In this context, water is absorbed by the polymer, leading to pore formation, which results in the creation of degradation products that dissolve in the release medium. Increased contact with water
Advances of aptamers in esophageal cancer diagnosis, treatment and drug delivery
Beilstein J. Nanotechnol. 2025, 16, 1734–1750, doi:10.3762/bjnano.16.121
- drugs from clearance, improve their accumulation at tumor sites, and potentially lead to more positive clinical feedback. Paclitaxel (PTX) was approved by the FDA in 1992 for the treatment of a variety of solid tumors. Poor water solubility is a major obstacle limiting its anticancer activity. PTX
Multifunctional anionic nanoemulsion with linseed oil and lecithin: a preliminary approach for dry eye disease
Beilstein J. Nanotechnol. 2025, 16, 1711–1733, doi:10.3762/bjnano.16.120
- components. When NE is instilled, the oil nanodroplets merge with the lipid layer, the water in the formulation interacts with the aqueous layer of the tear film, and the surfactant interacts with the mucin layer [21][22][23]. The literature cites various lipids as components of the oily phase in
- analytical grade reagents were used as received from the supplier without further purification. Ultrapure water was obtained from a Milli-Q® (Merck Millipore) direct water purification system (18.2 MΩ·cm) and used for all aqueous solutions. L-929 cells (code 0188) were obtained from the Banco de Células do
- (25 mL) were prepared by varying the egg lecithin concentration from 1% to 5% (w/w) in 8% (w/w) oil in water, resulting in pre-emulsions with five distinct concentrations (described in Table S1, Supporting Information File 1). The oil and aqueous phases were heated separately to 75 °C. The mass of egg
Beyond the bilayer: multilayered hygroscopic actuation in pine cone scales
Beilstein J. Nanotechnol. 2025, 16, 1695–1710, doi:10.3762/bjnano.16.119
- investigated. Using gravimetric water uptake measurements, synchrotron radiation-based nano-holotomography, and digital volume correlation analysis, inter- and intra-tissue variations of hygroscopic swelling/shrinkage were observed. In addition, the moisture content of pine cone scale tissues was measured as a
- the bending motion of the scale. One crucial influencing factor is the difference within or between tissues, as Eger et al. [23] highlighted. The authors measured the relative change of moisture content as a function of relative humidity by gravimetric water uptake measurements of the sclereid cells
- , the brown tissue, and the sclerenchyma fibers of a Pinus wallichiana pine cone scale. However, as their water uptake measurements consisted of only one measurement per tissue, being limited to the range of 30–80% RH, and their equilibrium criterion being one hour of exposure instead of a mass change
Ambient pressure XPS at MAX IV
Beilstein J. Nanotechnol. 2025, 16, 1677–1694, doi:10.3762/bjnano.16.118
- Physics of the University of Trieste [22], and supported by DFT, the authors demonstrated that the Co-porphyrin SAC stabilizes a hydroperoxyl–water (O2H-H2O) cluster in O2+H2O atmosphere at room temperature [21]. This is considered the fundamental reaction intermediate in the ORR. In particular, the
- important challenges for modern human civilization. Reactions such as water splitting, CO2 reduction, and pollutant degradation rely on photocatalysts that absorb light, generate electron–hole pairs, and drive redox reactions at interfaces. For the rational and methodical design of a more sophisticated
- application is photocatalytic water splitting for green hydrogen production. Urpelainen and colleagues clarified the mechanisms of photocatalytic hydrogen evolution reaction (HER) in a new prospective model system, the Ni@NiO/NiCO3 photocatalyst, under dark and illuminated conditions at 1 mbar of H2O [45
Prospects of nanotechnology and natural products for cancer and immunotherapy
Beilstein J. Nanotechnol. 2025, 16, 1644–1667, doi:10.3762/bjnano.16.116
- aptamer, sorafenib, and ursolic acid as an API at 4 mg·mL−1 in methanol. Physicochemical tests showed that the nanoparticles have a spherical shape, confirmed by atomic force microscopy (AFM), and are stable in ultrapure water and Dulbecco’s modified eagle medium (DMEM) with 10% FBS. Procedures to
Venom-loaded cationic-functionalized poly(lactic acid) nanoparticles for serum production against Tityus serrulatus scorpion
Beilstein J. Nanotechnol. 2025, 16, 1633–1643, doi:10.3762/bjnano.16.115
- Louis, Missouri, United States of America). The BCA Protein Assay Kit was purchased from Pierce Biotechnology (Woburn, Massachusetts, United States of America) and mouse IgG total ELISA was purchased from eBioscience (San Diego, California, United States of America). Purified water (1.3 µS·cm−1) was
- , United States of America), equipped with a 90 Plus/BI-MAS apparatus, at a wavelength of 659 nm with a scattering angle of 90°. For the analysis, 100 μL of the nanoparticle suspension was diluted in 900 μL of deionized water (1:10 dilution) to ensure dispersions within a suitable experimental range (100
- weeks old), from both sexes were used for the studies. The animals were maintained at 22 ± 2 °C and in a 12 h dark/12 h light cycle, with free access to standard laboratory chow and water. Each experimental group was composed of five animals (n = 5). After the experiments, all animals were euthanized
Nanotechnology-based approaches for the removal of microplastics from wastewater: a comprehensive review
Beilstein J. Nanotechnol. 2025, 16, 1607–1632, doi:10.3762/bjnano.16.114
- , and advanced membrane materials, exhibit unique properties such as high surface area, enhanced reactivity, and tunable surface chemistry, which offer promising avenues for the selective and efficient removal of MPs from water. This paper also explores the mechanism, performance and limitations of
- for MP monitoring. Despite high laboratory scale efficiencies, there are several challenges such as material scalability, environmental safety, regulatory frameworks, and real water applicability. This study proposes future directions for sustainable nanotechnology deployment, including green
- wear, and microbial activity [3]. Common types of MPs found in ecosystems, particularly in freshwater and drinking water sources, include materials such as high-density polyethylene, polystyrene, polyvinyl chloride, and polypropylene [4]. Among the various contributors to MPs, residential households
Bioinspired polypropylene-based functionally graded materials and metamaterials modeling the mistletoe–host interface
Beilstein J. Nanotechnol. 2025, 16, 1592–1606, doi:10.3762/bjnano.16.113
- systems with different mechanical properties. As a hemiparasite, it uses a modified organ called the “haustorium” with wedge-shaped, or simplified, V-shaped structures to penetrate the host and establish a physiological and mechanical connection (Figure 1) [26][27][28]. This allows it to take up water and
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