On the use of Raman spectroscopy to characterize mass-produced graphene nanoplatelets

• Keith R. Paton,
• Konstantinos Despotelis,
• Naresh Kumar,
• Piers Turner and
• Andrew J. Pollard

Beilstein J. Nanotechnol. 2023, 14, 509–521, doi:10.3762/bjnano.14.42

• , it is not clear if Raman spectroscopy has the sensitivity to detect the presence of this material in the final product. In this paper, we examine the effect that increasing amounts of unexfoliated graphitic material in a well-defined sample of GNPs have on the measured Raman spectra. First, a sample

• Lorenztian functions. The peaks were fitted together, with an offset baseline. We have averaged across 441 points in a sample, which is more than is used in a typical workflow, and the effect of the number of points measured is examined later in this paper. Results and Discussion AFM results The aim of the

Specific absorption rate of randomly oriented magnetic nanoparticles in a static magnetic field

• Ruslan A. Rytov and
• Nikolai A. Usov

Beilstein J. Nanotechnol. 2023, 14, 485–493, doi:10.3762/bjnano.14.39

• paper, numerical simulations of the stochastic Landau–Lifshitz equation are used to study the dynamics of magnetization in dilute, randomly oriented assemblies of iron oxide nanoparticles under the combined action of ac and dc magnetic fields. It is shown that for nanoparticles with a diameter D < 25 nm

A mid-infrared focusing grating coupler with a single circular arc element based on germanium on silicon

• Xiaojun Zhu,
• Shuai Li,
• Ang Sun,
• Yongquan Pan,
• Wen Liu,
• Yue Wu,
• Guoan Zhang and
• Yuechun Shi

Beilstein J. Nanotechnol. 2023, 14, 478–484, doi:10.3762/bjnano.14.38

• technological process. Therefore, a focusing grating coupler (FGC) with a simple fabrication process and high coupling efficiency is urgently needed. In this paper, a MIR FGC with a single circular arc element (CAE) based on Ge-on-Si is demonstrated and simulated. The proposed MIR FGC consists of a section of

Conjugated photothermal materials and structure design for solar steam generation

• Chia-Yang Lin and
• Tsuyoshi Michinobu

Beilstein J. Nanotechnol. 2023, 14, 454–466, doi:10.3762/bjnano.14.36

• formed by sequential polymerization on paper substrates, to enhance their light capturing capability (Figure 6a) [32]. Transmission and diffuse reflectance measurements of the PPy nanosheets confirmed that the multilayer PPy nanosheets on the paper substrate exhibited a distinct broadband absorption in

• functions of the membranes. As already described, DPP has been used as the PTM for SSG devices [27]. Microcrystalline solids of DPP molecules were formed in a solution and they were deposited on a filter paper by filtration. The filter papers with the deposited DPP derivatives were employed as photothermal

• films. Optical microscopy was employed to observe the surface structure of the films (Figure 10a–d). Figure 10a shows the filter paper. In the photothermal films, the filter paper is the supporting layer. The filter paper is indeed suitable for this purpose because the cellulose fibers are randomly

Quercetin- and caffeic acid-functionalized chitosan-capped colloidal silver nanoparticles: one-pot synthesis, characterization, and anticancer and antibacterial activities

• Akif Hakan Kurt,
• Elif Berna Olutas,
• Fatma Avcioglu,
• Hamza Karakuş,
• Mehmet Ali Sungur,
• Cansu Kara Oztabag and
• Muhammet Yıldırım

Beilstein J. Nanotechnol. 2023, 14, 362–376, doi:10.3762/bjnano.14.31

• . Small volumes of Ch/Q- and Ch/CA-Ag NPs were placed on carbon-coated copper grids and allowed to evaporate at room temperature. For negative staining, a drop of freshly prepared 2% uranyl acetate solution was dripped on the copper grid, and excess liquid is removed by a piece of paper after 2 min. Zeta

Bismuth-based nanostructured photocatalysts for the remediation of antibiotics and organic dyes

• Akeem Adeyemi Oladipo and
• Faisal Suleiman Mustafa

Beilstein J. Nanotechnol. 2023, 14, 291–321, doi:10.3762/bjnano.14.26

• fresh waters [47][48][49]. According to the paper of Wise in the year 2002 [50], nearly 200,000 tons of antibiotics are consumed globally each year, with roughly 50% being utilized for veterinary medication and growth stimulants. Notably, between the years 2000 and 2010, the amount of antibiotics

Biocatalytic synthesis and ordered self-assembly of silica nanoparticles via a silica-binding peptide

• Mustafa Gungormus

Beilstein J. Nanotechnol. 2023, 14, 280–290, doi:10.3762/bjnano.14.25

• covers were moved completely out of the colloidal solution. Scanning electron microscopy To analyze as-synthesized particles, 50 µL aliquots of the reaction solutions were placed on standard microscope cover slides. The excess liquid was removed by absorbing on a clean absorbent paper. To analyze self

Spin dynamics in superconductor/ferromagnetic insulator hybrid structures with precessing magnetization

• Yaroslav V. Turkin and
• Nataliya Pugach

Beilstein J. Nanotechnol. 2023, 14, 233–239, doi:10.3762/bjnano.14.22

• one takes into account also the density of states correction, which is beyond the scope of the current paper. Thus, the effect of spin distribution function splitting can be revealed in superconducting hybrid systems with nonequilibrium electron–hole distributions such as superconductor/normal metal

Structural, optical, and bioimaging characterization of carbon quantum dots solvothermally synthesized from o-phenylenediamine

• Zoran M. Marković,
• Milica D. Budimir,
• Martin Danko,
• Dušan D. Milivojević,
• Pavel Kubat,
• Danica Z. Zmejkoski,
• Vladimir B. Pavlović,
• Marija M. Mojsin,
• Milena J. Stevanović and
• Biljana M. Todorović Marković

Beilstein J. Nanotechnol. 2023, 14, 165–174, doi:10.3762/bjnano.14.17

• o-phenylenediamine did not disrupt the cytoplasmic membrane. Cytotoxicity testing Low cytotoxicity is one of the mandatory requirements for biomedical applications. In this paper, we performed cell viability tests by applying the MTT assay toward MRC5 human lung fibroblast cells. Lung fibroblasts

Batch preparation of nanofibers containing nanoparticles by an electrospinning device with multiple air inlets

• Dong Wei,
• Chengwei Ye,
• Adnan Ahmed and
• Lan Xu

Beilstein J. Nanotechnol. 2023, 14, 141–150, doi:10.3762/bjnano.14.15

• various fields to improve the performance and technical indicators of products [17][18][19][20]. An electrospinning device with multiple air inlets (EMAI) was designed and developed in this paper to prepare functional nanofibers containing ZnO nanoparticles in batches, as shown in Figure 1. The device

Intermodal coupling spectroscopy of mechanical modes in microcantilevers

• Ioan Ignat,
• Bernhard Schuster,
• Jonas Hafner,
• MinHee Kwon,
• Daniel Platz and
• Ulrich Schmid

Beilstein J. Nanotechnol. 2023, 14, 123–132, doi:10.3762/bjnano.14.13

• multitonal responses, from which the force is reconstructed. In this paper, we are building towards a hybrid multifrequency approach different from the ones described above. The on-resonance measurement would follow frequency-modulated AFM or bimodal AFM while being assisted by a new off-resonance excitation

Characterisation of a micrometer-scale active plasmonic element by means of complementary computational and experimental methods

• Ciarán Barron,
• Giulia Di Fazio,
• Samuel Kenny,
• Silas O’Toole,
• Robin O’Reilly and
• Dominic Zerulla

Beilstein J. Nanotechnol. 2023, 14, 110–122, doi:10.3762/bjnano.14.12

• subsequent paper. At this stage, experiments with active elements of different sizes reveal that the ratio between heated and non-heated surface illuminated by the laser beam influences the intensity of this effect. The ability to observe these details demonstrates the high sensitivity of this technique to

• the differences in optical constants of small areas under investigation. This effect, while highly interesting, deserves its own dedicated investigation and, hence, falls outside the scope of this paper. In Figure 8, the response of both the typical SPR curve and the LIA signal at four selected

Combining physical vapor deposition structuration with dealloying for the creation of a highly efficient SERS platform

• Adrien Chauvin,
• Walter Puglisi,
• Damien Thiry,
• Cristina Satriano,
• Rony Snyders and
• Carla Bittencourt

Beilstein J. Nanotechnol. 2023, 14, 83–94, doi:10.3762/bjnano.14.10

• resulting signal intensity tends to strongly vary due to surface contamination [30]. In this paper, a simple synthesis method to design bimodal porous silver substrate for SERS is reported. Magnetron co-sputtering of a silver and aluminum target was used for the deposition of the precursor alloy thin film

• use of Taro leaves or rose petals as substrates for silver PVD coating leads to a SERS detection limit down to 10−8 mol·L−1 and 10−9 mol·L−1, respectively, for rhodamine 6G (R6G) [55][56]. Moreover, the use of silver-coated paper as a SERS substrate reveals a detection limit down to 10−10 mol·L−1 for

Upper critical magnetic field in NbRe and NbReN micrometric strips

• Zahra Makhdoumi Kakhaki,
• Antonio Leo,
• Federico Chianese,
• Loredana Parlato,
• Giovanni Piero Pepe,
• Angela Nigro,
• Carla Cirillo and
• Carmine Attanasio

Beilstein J. Nanotechnol. 2023, 14, 45–51, doi:10.3762/bjnano.14.5

• observed. These results, which cannot be described by the WHH model, are interpreted as an indication of the presence of an unconventional superconducting pairing in the material. In this paper, we measure the temperature dependence of the perperpendicular, Hc2⟂(T), and parallel, Hc2∥(T), critical field of

The influence of structure and local structural defects on the magnetic properties of cobalt nanofilms

• Alexander Vakhrushev,
• Aleksey Fedotov,
• Olesya Severyukhina and
• Anatolie Sidorenko

Beilstein J. Nanotechnol. 2023, 14, 23–33, doi:10.3762/bjnano.14.3

• , Academiei 3/3, Chisinau 2028, Moldova 10.3762/bjnano.14.3 Abstract The present paper considers a mathematical model describing the time evolution of spin states and magnetic properties of a nanomaterial. We present the results of two variants of nanosystem simulations. In the first variant, cobalt with a

• nanomaterial arising from its production are important tasks, often closely related to the composition of the sample in question. In this paper, we propose one mathematical model to investigate the relationship between the material structure and its magnetic properties. Mathematical modeling is used to

• representing the magnetic spin of the particle, ωi is the magnetic moment, and ℏ is the Planck constant. This approach to calculate spin temperature was proposed in [44]. The approach described in this paper and originally proposed by the authors [40] is implemented using direct simulation methods. At each

Atmospheric water harvesting using functionalized carbon nanocones

• Fernanda R. Leivas and
• Marcia C. Barbosa

Beilstein J. Nanotechnol. 2023, 14, 1–10, doi:10.3762/bjnano.14.1

• wettability variations combined with a nanometric design to improve water flow [39][40]. The paper is organized as follows: In the section “Model and Simulation Details”, the model is presented and the simulation method is explained. In the “Results and Discussion” section, the simulation results are shown

From a free electron gas to confined states: A mixed island of PTCDA and copper phthalocyanine on Ag(111)

• Alfred J. Weymouth,
• Emily Roche and
• Franz J. Giessibl

Beilstein J. Nanotechnol. 2022, 13, 1572–1577, doi:10.3762/bjnano.13.131

• stacked configuration [19]. When CuPc is on top of PTCDA, the interface state can still be observed [19], and CuPc has a strong bond to the underlying PTCDA layer [20]. In this paper, we present STM and AFM data of P2C and PC phases on Ag(111), concentrating on the PC phase. The high-resolution AFM allows

Structural studies and selected physical investigations of LiCoO₂ obtained by combustion synthesis

• Monika Michalska,
• Paweł Ławniczak,
• Tomasz Strachowski,
• Adam Ostrowski and
• Waldemar Bednarski

Beilstein J. Nanotechnol. 2022, 13, 1473–1482, doi:10.3762/bjnano.13.121

• . However, during cooling, the samples heated to 750 and 900 °C had much higher conductivity. The EPR studies suggest the existence of two phases for LCO, and further research on this issue will be the subject of another paper. However, XRD studies clearly indicate that the material is single-phase

Density of states in the presence of spin-dependent scattering in SF bilayers: a numerical and analytical approach

• Tairzhan Karabassov,
• Valeriia D. Pashkovskaia,
• Nikita A. Parkhomenko,
• Anastasia V. Guravova,
• Elena A. Kazakova,
• Boris G. Lvov,
• Alexander A. Golubov and
• Andrey S. Vasenko

Beilstein J. Nanotechnol. 2022, 13, 1418–1431, doi:10.3762/bjnano.13.117

• junctions. We do not consider any additional effects in the SF boundary such as spin-dependent interfacial phase shifts (SDIPS). The effect of SDIPS on the DOS behavior in SFIFS junctions has been studied both analytically [86] and numerically [87]. The paper is organized as follows. In the section (“Model

• mentioned in the previous section. In this paper we consider two cases of the junction transparency: (i) intermediate interface transparency (γB ≥ 1) and (ii) low interface transparency (γB ≫ 1). In both cases, we fix the thickness of the F layer to df = 0.5ξf. Focusing on these cases allows us to discuss

Dry under water: air retaining properties of large-scale elastomer foils covered with mushroom-shaped surface microstructures

• Matthias Mail,
• Stefan Walheim,
• Thomas Schimmel,
• Wilhelm Barthlott,
• Stanislav N. Gorb and
• Lars Heepe

Beilstein J. Nanotechnol. 2022, 13, 1370–1379, doi:10.3762/bjnano.13.113

• Böhnlein and Manuel Karl for their help in constructing the experimental setups and performing the experiments. Funding Funding of the work presented in this paper was provided by the Federal Ministry for Education (BMBF) in the joint research project ARES (Air REtaining Surfaces, grant 03V0752) in the VIP

Supramolecular assembly of pentamidine and polymeric cyclodextrin bimetallic core–shell nanoarchitectures

• Alexandru-Milentie Hada,
• Nina Burduja,
• Marco Abbate,
• Claudio Stagno,
• Guy Caljon,
• Louis Maes,
• Nicola Micale,
• Massimiliano Cordaro,
• Angela Scala,
• Antonino Mazzaglia and
• Anna Piperno

Beilstein J. Nanotechnol. 2022, 13, 1361–1369, doi:10.3762/bjnano.13.112

• stable Ag NPs. In the framework of our research on BMNPs, we collected several experimental data, including FTIR spectra, which suggested strong interactions between PolyCD and Au@Ag BMNPs [14]. In this paper we partially clarify the role of PolyCD in the formation/stabilization of Au@Ag BMNPs by

Straight roads into nowhere – obvious and not-so-obvious biological models for ferrophobic surfaces

• Wilfried Konrad,
• Christoph Neinhuis and
• Anita Roth-Nebelsick

Beilstein J. Nanotechnol. 2022, 13, 1345–1360, doi:10.3762/bjnano.13.111

• represented by a sequence of projects in which the co-authors of this paper were involved in different combinations. The underlying biomimetic problems and physical as well as biological topics just provided the vehicle to describe the flow of concepts, inspirations and transfer problems. Perspective The

Recent trends in Bi-based nanomaterials: challenges, fabrication, enhancement techniques, and environmental applications

• Vishal Dutta,
• Ankush Chauhan,
• Ritesh Verma,
• C. Gopalkrishnan and
• Van-Huy Nguyen

Beilstein J. Nanotechnol. 2022, 13, 1316–1336, doi:10.3762/bjnano.13.109

• photocatalysts, upgrading the photocatalytic ability, and understanding essential reactions of the photocatalytic process. This paper provides insights into the characteristics of Bi-based photocatalysts, making them a promising future nanomaterial for environmental remediation. The current review discusses the

Bending and punching characteristics of aluminum sheets using the quasi-continuum method

• Man-Ping Chang,
• Shang-Jui Lin and
• Te-Hua Fang

Beilstein J. Nanotechnol. 2022, 13, 1303–1315, doi:10.3762/bjnano.13.108

• Figure 12c. Effect of taper angle on the nano-punching process So far this paper has discussed the influences of different orientations and thicknesses of workpieces, and also considered the clearance between the punch and substrate. This section focuses on the design of the punch. The taper angle of the

Laser-processed antiadhesive bionic combs for handling nanofibers inspired by nanostructures on the legs of cribellate spiders

• Sebastian Lifka,
• Kristóf Harsányi,
• Erich Baumgartner,
• Lukas Pichler,
• Dariya Baiko,
• Karsten Wasmuth,
• Johannes Heitz,
• Marco Meyer,
• Anna-Christin Joel,
• Jörn Bonse and
• Werner Baumgartner

Beilstein J. Nanotechnol. 2022, 13, 1268–1283, doi:10.3762/bjnano.13.105

• siliconized paper and other materials, which were also tested by a commercially available peel-off meter. Both measurements were found to be in good agreement. The measurement of the peel-off force was performed as follows: The investigated sample was fixed on the sample holder by means of double-sided tape