Sulfur nanocomposites with insecticidal effect for the control of Bactericera cockerelli

• Lany S. Araujo-Yépez,
• Juan O. Tigrero-Salas,
• Vicente A. Delgado-Rodríguez,
• Vladimir A. Aguirre-Yela and
• Josué N. Villota-Méndez

Beilstein J. Nanotechnol. 2023, 14, 1106–1115, doi:10.3762/bjnano.14.91

• significant income for producers and population [6]. The main problems for producers are pests and diseases that severely affect crops [7]. High densities of insects feeding on potatoes prior to flowering can result in a large number of unmarketable tubers [8]. Additionally, combined infestation with the

Recognition mechanisms of hemoglobin particles by monocytes – CD163 may just be one

• Jonathan-Gabriel Nimz,
• Pichayut Rerkshanandana,
• Chiraphat Kloypan,
• Ulrich Kalus,
• Saranya Chaiwaree,
• Axel Pruß,
• Radostina Georgieva,
• Yu Xiong and
• Hans Bäumler

Beilstein J. Nanotechnol. 2023, 14, 1028–1040, doi:10.3762/bjnano.14.85

• rather than whole bacteria for the higher phagocytosis efficacy of lysates). For comparison, samples were prepared in which the cells were able to phagocytose either unlabeled E. coli lysate or HbMP in a pre-feeding step (approximately 100 HbMPs per leukocyte). The incubation period here was 120 min. In

• addition, samples with HbMP pre-feeding were also prepared with a shortened incubation time of only 30 min to obtain information of the course of phagocytic activity over time. Table 1 offers an overview of the samples described above. Identical negative controls were carried along, which remained at 0 °C

• sample and the corresponding reduction in the other samples provided information about the extent of phagocytosis in the pre-feeding step. For each experimental run, blood from a different donor was used. Due to the donors’ variability (e.g., different cell counts, immune cell activity, or surface

Biomimetics on the micro- and nanoscale – The 25th anniversary of the lotus effect

• Matthias Mail,
• Kerstin Koch,
• Thomas Speck,
• William M. Megill and
• Stanislav N. Gorb

Beilstein J. Nanotechnol. 2023, 14, 850–856, doi:10.3762/bjnano.14.69

• , and therefore the surface is multifunctional. In the paper “Suspension feeding in Copepoda (Crustacea) – a numerical model of setae acting in concert”, Filippov et al. [20] present a numerical modelling approach to understand the influence of different parameters on the feeding efficiency of

• suspension feeding in common Crustacea. The results show that a system combining long and short setae with different mechanical properties has the best performance. The numerical simulation can in future be easily adapted to other systems and therefore be used for biomimetic developments (e.g., in the field

Suspension feeding in Copepoda (Crustacea) – a numerical model of setae acting in concert

• Alexander E. Filippov,
• Wencke Krings and
• Stanislav N. Gorb

Beilstein J. Nanotechnol. 2023, 14, 603–615, doi:10.3762/bjnano.14.50

• -Luther-King-Platz 3, 20146 Hamburg, Germany Department of Cariology, Endodontology and Periodontology, Universität Leipzig, Liebigstraße 12, 04103 Leipzig, Germany 10.3762/bjnano.14.50 Abstract Suspension feeding via setae collecting particles is common within Crustacea. Even though the mechanisms

• mechanical property gradients, the mechanical behavior and the adhesion of setae, and the feeding efficiency of the system. In this context, we set-up a simple dynamic numerical model that takes all of these parameters into account and describes the interaction with food particles and their delivery into the

• mouth opening. By altering the parameters, it was unraveled that the system performs best when the long and short setae have different mechanical properties and different degrees of adhesion since the long setae generate the feeding current and the short ones establish the contact with the particle

Interaction between honeybee mandibles and propolis

• Leonie Saccardi,
• Franz Brümmer,
• Jonas Schiebl,
• Oliver Schwarz,
• Alexander Kovalev and
• Stanislav Gorb

Beilstein J. Nanotechnol. 2022, 13, 958–974, doi:10.3762/bjnano.13.84

• mandibles was however significantly lower than on both substrates made from Spurr’s resin (P < 0.0001). Discussion Anatomy of honeybee mandibles A honeybee mandible is a highly specialised organ that is used for multiple purposes such as feeding, defence, and propolis foraging and processing [6][7]. Using

Micro-structures, nanomechanical properties and flight performance of three beetles with different folding ratios

• Jiyu Sun,
• Pengpeng Li,
• Yongwei Yan,
• Fa Song,
• Nuo Xu and
• Zhijun Zhang

Beilstein J. Nanotechnol. 2022, 13, 845–856, doi:10.3762/bjnano.13.75

• and have a strong flying ability. P. brevitarsis also has a strong migratory ability, moves quickly, and generally flies approximately 50 m [54][55][56]. A. chinensis lives mostly inside trunks of trees or in small closed forests, feeding on young leaves and bark [57]. T. dichotomus often lives in

• areas with well-developed forestry and thick trees und conditions native to a forest, feeding on the sap that flows from the surface of the bark. During the day, they mostly rest in shady and humid environments such as soil and move more in the evening hours [58][59]. Compared with the other two beetles

The role of convolutional neural networks in scanning probe microscopy: a review

• Ido Azuri,
• Irit Rosenhek-Goldian,
• Neta Regev-Rudzki,
• Georg Fantner and
• Sidney R. Cohen

Beilstein J. Nanotechnol. 2021, 12, 878–901, doi:10.3762/bjnano.12.66

• parts of the single harmonic oscillator data) were fed into the network. It was shown that the DNN outperforms the traditional least-squares analysis when S/N is low, but at the cost of accuracy. However, further optimization can improve this situation. Feeding the DNN result into the least squares

A review on the biological effects of nanomaterials on silkworm (Bombyx mori)

• Sandra Senyo Fometu,
• Guohua Wu,
• Lin Ma and
• Joan Shine Davids

Beilstein J. Nanotechnol. 2021, 12, 190–202, doi:10.3762/bjnano.12.15

• problems and on how to understand some biological processes. Table 2 summarizes the advantages and limitations of using certain model organisms in research. Impact of nanomaterials on the growth and development of silkworms The feeding efficiency of silkworm larvae is important as it accounts for their

• growth rate and development [116]. Li et al. [116] showed that low concentrations of nanoparticles (NPs) enhance larval body growth and feeding efficiency. Silkworm larvae fed with 5 or 10 mg/L of TiO2 NPs (with sizes in the range of 5–6 nm) improved the ingestion and digestibility of mulberry leaves

• the silkworm fat body. The treatment with TiO2 NPs activated the insulin signaling pathway of the silkworm by enhancing the metabolism of carbohydrates, proteins, and fat when compared to the control group. Ni et al. [120] reported that feeding silkworm larvae with 5 g/mL of TiO2 NPs led to the

Oxidation of Au/Ag films by oxygen plasma: phase separation and generation of nanoporosity

• Abdel-Aziz El Mel,
• Said A. Mansour,
• Mujaheed Pasha,
• Atef Zekri,
• Janarthanan Ponraj,
• Akshath Shetty and
• Yousef Haik

Beilstein J. Nanotechnol. 2020, 11, 1608–1614, doi:10.3762/bjnano.11.143

• residual stress. The repeated oxidation and cracking events result in the transformation of the metallic silver into nanoporous silver oxide when it reaches the surface of the film. In parallel to the oxidation reaction, silver keeps diffusing from the alloy film toward the surface, feeding the metallic

Magnetic-field-assisted synthesis of anisotropic iron oxide particles: Effect of pH

• Andrey V. Shibaev,
• Petr V. Shvets,
• Darya E. Kessel,
• Roman A. Kamyshinsky,
• Anton S. Orekhov,
• Sergey S. Abramchuk,
• Alexei R. Khokhlov and
• Olga E. Philippova

Beilstein J. Nanotechnol. 2020, 11, 1230–1241, doi:10.3762/bjnano.11.107

• mixture as: where [NaOH], [HCl], [Fe3+] and [Fe2+] are the equilibrium concentrations of the corresponding species. In the case of the 5 M NaOH feeding solution, there is a high excess of hydroxyl ions (R = 8), which is confirmed by the small decrease in pH during synthesis (Figure 1) as a result of OH

• − consumption by the iron ions in the reaction. As a consequence, at the end of the reaction, the pH value is still highly basic (pH ≈ 14.4). For the 1.3 M NaOH feeding solution, the amounts of hydroxyl and iron ions in the mixture are comparable (R = 2.1). In this case, the decrease in pH is more pronounced

• , leading to the formation of rod-like single-crystalline particles. The same mixture of rods and spheres was observed at slightly higher value of R = 2.4 obtained with a 1.45 M NaOH feeding solution (Supporting Information File 1, Figure S2A). Excess of hydroxyl ions (R = 8) Under this synthesis route, the

Transition from freestanding SnO₂ nanowires to laterally aligned nanowires with a simulation-based experimental design

• Jasmin-Clara Bürger,
• Sebastian Gutsch and
• Margit Zacharias

Beilstein J. Nanotechnol. 2020, 11, 843–853, doi:10.3762/bjnano.11.69

• , oxygen) is required. This results in an expected faster growth of thinner NWs, when the same concentration of the feeding materials in the droplet surrounding is given [19]. As can be seen from Figure 8 and summarized in Figure 9 for the evaluation of a large number of NWs (by measuring the lengths of

Adsorptive removal of bulky dye molecules from water with mesoporous polyaniline-derived carbon

• Hyung Jun An,
• Jong Min Park,
• Nazmul Abedin Khan and
• Sung Hwa Jhung

Beilstein J. Nanotechnol. 2020, 11, 597–605, doi:10.3762/bjnano.11.47

• ), similar to a previous work [46]. In brief, an adsorbed quantity of water was measured for up to 60 min by feeding water vapor with the help of a nitrogen carrier. The adsorbed quantity of n-octane was determined similarly, and the relative quantity (n-octane/water, mol/mol) was calculated accordingly

Multilayer capsules made of weak polyelectrolytes: a review on the preparation, functionalization and applications in drug delivery

• Varsha Sharma and
• Anandhakumar Sundaramurthy

Beilstein J. Nanotechnol. 2020, 11, 508–532, doi:10.3762/bjnano.11.41

• most commonly used method is the movement of cargo from lower to higher concentration via a concentration gradient based diffusion process such as in case of Dox loading in GA cross-linked (chitosan-alginate)5 microcapsules [76]. At low feeding concentrations (e.g., 750 µg/mL), the drug loading was

• attributed to the accumulation effect, whereas the overall loading was influenced by both the accumulation effect and normal diffusion processes at high feeding concentrations. The gel-like matrix cores of inorganic CaCO3 and SiO2 provide a larger surface area for encapsulation than normal cores due to their

Implementation of data-cube pump–probe KPFM on organic solar cells

• Benjamin Grévin,
• Olivier Bardagot and
• Renaud Demadrille

Beilstein J. Nanotechnol. 2020, 11, 323–337, doi:10.3762/bjnano.11.24

• feeding the frequency-shift signal (Δf) from the SPM phase-lock loop to the LIA input (KPFM operated in frequency-modulation mode). Using the SPM unit (block 1), the reference bias modulation voltage (Vmod, ωmod) is added to the compensation voltage generated by the KPFM feedback loop. The sum is

A review of demodulation techniques for multifrequency atomic force microscopy

• David M. Harcombe,
• Michael G. Ruppert and
• Andrew J. Fleming

Beilstein J. Nanotechnol. 2020, 11, 76–91, doi:10.3762/bjnano.11.8

• , which establishes the requirement for demodulation in AFM. In intermittent-contact constant-amplitude AFM [5], a constant cantilever oscillation amplitude is maintained by feeding back the demodulated fundamental amplitude of the deflection signal. The imaging of delicate biological samples [6][7][8] is

• estimated states [56], with the tunable loop gain γ governing the speed of convergence. The multifrequency Lyapunov filter is implemented as parallel linear observers tuned to a particular frequency ωi, as depicted in Figure 6. An error signal is generated by feeding back an estimate of the input signal as

Toxicity and safety study of silver and gold nanoparticles functionalized with cysteine and glutathione

• Barbara Pem,
• Igor M. Pongrac,
• Lea Ulm,
• Ivan Pavičić,
• Valerije Vrček,
• Darija Domazet Jurašin,
• Marija Ljubojević,
• Adela Krivohlavek and
• Ivana Vinković Vrček

Beilstein J. Nanotechnol. 2019, 10, 1802–1817, doi:10.3762/bjnano.10.175

• damaging any daphnids, which would lead to false conclusions. The daphnids were incubated for 24 and 48 h without feeding during the treatment period. The tests were performed four times each in four replicates. The death of the D. magna organism was the endpoint of the test. The acute toxicity was

Integration of LaMnO_3+δ films on platinized silicon substrates for resistive switching applications by PI-MOCVD

• Raquel Rodriguez-Lamas,
• Dolors Pla,
• Odette Chaix-Pluchery,
• Benjamin Meunier,
• Fabrice Wilhelm,
• Andrei Rogalev,
• Laetitia Rapenne,
• Xavier Mescot,
• Quentin Rafhay,
• Hervé Roussel,
• Michel Boudard,
• Carmen Jiménez and
• Mónica Burriel

Beilstein J. Nanotechnol. 2019, 10, 389–398, doi:10.3762/bjnano.10.38

• stoichiometric films with a La/Mn ratio close to 1. The injection of the liquid precursors was performed using a frequency of 2.5 Hz and an opening time of 2 ms with a solution feeding rate of 0.35 mL/min. The evaporator was thermalized at 250 °C and Ar was used as carrier gas. The total pressure in the chamber

Co-intercalated layered double hydroxides as thermal and photo-oxidation stabilizers for polypropylene

• Qian Zhang,
• Qiyu Gu,
• Fabrice Leroux,
• Pinggui Tang,
• Dianqing Li and
• Yongjun Feng

Beilstein J. Nanotechnol. 2018, 9, 2980–2988, doi:10.3762/bjnano.9.277

• the content of Al and C taking into account the charge balance. The molar fractions of the guest anions are close to the feeding ratio, suggesting the ratio between HALS and MP can be adjusted as designed. These results also suggest that both of HALS and MP anions have been co-intercalated into Ca2Al

Electrospun one-dimensional nanostructures: a new horizon for gas sensing materials

• Muhammad Imran,
• Nunzio Motta and
• Mahnaz Shafiei

Beilstein J. Nanotechnol. 2018, 9, 2128–2170, doi:10.3762/bjnano.9.202

• melt. A typical solution electrospinning setup comprises five major components: a metallic needle with a blunt tip, a syringe for containing the electrospun solution, a syringe pump to control the solution feeding rate, a direct current (DC) high voltage (HV) source, and a grounded conductive collector

Electron interactions with the heteronuclear carbonyl precursor H₂FeRu₃(CO)₁₃ and comparison with HFeCo₃(CO)₁₂: from fundamental gas phase and surface science studies to focused electron beam induced deposition

• Ragesh Kumar T P,
• Paul Weirich,
• Lukas Hrachowina,
• Marc Hanefeld,
• Ragnar Bjornsson,
• Helgi Rafn Hrodmarsson,
• Sven Barth,
• D. Howard Fairbrother,
• Michael Huth and
• Oddur Ingólfsson

Beilstein J. Nanotechnol. 2018, 9, 555–579, doi:10.3762/bjnano.9.53

• based on chilled substrates [61]. Successful deposition of Ru containing structures has been demonstrated from an organometallic precursor leading to RuC9 and required oxygen co-feeding to remove carbon resulting in RuO2 [61]. Reports on a heteroleptic Ru carbonyl precursor suggest that the carbonyl

Lyapunov estimation for high-speed demodulation in multifrequency atomic force microscopy

• David M. Harcombe,
• Michael G. Ruppert,
• Michael R. P. Ragazzon and
• Andrew J. Fleming

Beilstein J. Nanotechnol. 2018, 9, 490–498, doi:10.3762/bjnano.9.47

• oscillation amplitude. This is achieved by feeding back the demodulated fundamental frequency present in the deflection signal. In intermittent-contact mode AFM [5], the tapping amplitude is chosen such that only gentle tip–sample interactions occur. This is particularly suitable for studying biological

• is shown to have a negative feedback loop in which integral action regulates the error. By feeding back an estimate of the input signal obtained from the parameterized states in the form of Equation 3, an error signal is generated. Regulation of this error through feedback leads to the much desired

Hyperthermic intracavitary nanoaerosol therapy (HINAT) as an improved approach for pressurised intraperitoneal aerosol chemotherapy (PIPAC): Technical description, experimental validation and first proof of concept

• Daniel Göhler,
• Stephan Große,
• Alexander Bellendorf,
• Thomas Albert Falkenstein,
• Mehdi Ouaissi,
• Jürgen Zieren,
• Michael Stintz and
• Urs Giger-Pabst

Beilstein J. Nanotechnol. 2017, 8, 2729–2740, doi:10.3762/bjnano.8.272

• to PIPAC-MIP, HINAT provides the opportunity to perform further studies concerning the treatment of peritoneal carcinomatosis or other aerosol-accessible kinds of cancer (e.g., lung cancer) on animals even smaller than pigs due to the minimal required access space for feeding nanometre-sized aerosols

Fabrication of carbon nanospheres by the pyrolysis of polyacrylonitrile–poly(methyl methacrylate) core–shell composite nanoparticles

• Dafu Wei,
• Youwei Zhang and
• Jinping Fu

Beilstein J. Nanotechnol. 2017, 8, 1897–1908, doi:10.3762/bjnano.8.190

• and the PMMA shell was sacrificed via the subsequent heat treatment steps. The thickness of the PMMA shell can be easily adjusted by changing the feeding volume ratio (FVR) of methyl methacrylate (MMA) to acrylonitrile (AN). At an FVR of 1.6, the coarse PAN cores were completely buried in the PMMA

• reaction was continued for 3.5 h under nitrogen protection and constant stirring. Finally, the PMMA–PAN latex was cooled and the unreacted MMA was removed at a reduced pressure. Varying the feeding volume ratio (FVR) of MMA to AN, three PAN–PMMA latexes were prepared. The PAN–PMMA latexes prepared at an

• method, and then used as the seed for the preparation of PAN–PMMA latex. The fabrication efficiency of the PAN–PMMA nanoparticles was thus improved substantially. Second, during the preparation of the PAN–PMMA latex, the hydrophobic initiator AIBN and semicontinuous feeding of MMA monomer were adopted to

Oxidative stabilization of polyacrylonitrile nanofibers and carbon nanofibers containing graphene oxide (GO): a spectroscopic and electrochemical study

• İlknur Gergin,
• Ezgi Ismar and
• A. Sezai Sarac

Beilstein J. Nanotechnol. 2017, 8, 1616–1628, doi:10.3762/bjnano.8.161

• used to vary the samples and investigate physical and chemical changes. Electrospinning solutions were prepared at different PAN/DMF ratios. Electrospinning parameters (e.g., viscosity, voltage, feeding ratio) effect the nanofiber diameter and homogeneity. Lower viscosity helps to produce finer

Biological and biomimetic materials and surfaces

• Stanislav Gorb and
• Thomas Speck

Beilstein J. Nanotechnol. 2017, 8, 403–407, doi:10.3762/bjnano.8.42

• , attachment and prey catching systems, reproductive, folding and feeding systems, as well as in traumatic reproductive systems [14]. The diets of marine zooplanktonic copepod crustaceans comprise a large proportion of the diatom taxa whose silicified shells exhibit extremely impressive mechanical stability

• . The ability of copepod species to efficiently break stable diatom structures is based on feeding tools with strongly specialized material architecture, chemical compositions and mechanical properties. The paper by Michels et al. [15] is the review of recent studies on copepod feeding tools. Their