A non-enzymatic electrochemical hydrogen peroxide sensor based on copper oxide nanostructures

• Irena Mihailova,
• Vjaceslavs Gerbreders,
• Marina Krasovska,
• Eriks Sledevskis,
• Valdis Mizers,
• Andrejs Bulanovs and
• Andrejs Ogurcovs

Beilstein J. Nanotechnol. 2022, 13, 424–436, doi:10.3762/bjnano.13.35

• being horseradish peroxidase) [34][35][36], and detection is carried out through physicochemical processes of interaction between H2O2 and the enzyme. This type of sensor has high catalytic activity, sensitivity, and selectivity. However, enzyme sensors have a significant disadvantage, namely enzyme

A chemiresistive sensor array based on polyaniline nanocomposites and machine learning classification

• Jiri Kroutil,
• Alexandr Laposa,
• Ali Ahmad,
• Jan Voves,
• Vojtech Povolny,
• Ladislav Klimsa,
• Marina Davydova and
• Miroslav Husak

Beilstein J. Nanotechnol. 2022, 13, 411–423, doi:10.3762/bjnano.13.34

• different mathematical algorithms and we examined the interaction between these algorithms. The seven algorithms were studied in deep using different combinations and the highest classification rate was obtained by PCA/GPC. Conclusion We presented the fabrication and characterization of seven different

Effect of sample treatment on the elastic modulus of locust cuticle obtained by nanoindentation

• Chuchu Li,
• Stanislav N. Gorb and
• Hamed Rajabi

Beilstein J. Nanotechnol. 2022, 13, 404–410, doi:10.3762/bjnano.13.33

• changes in the interaction of water molecules with the chitin of the cuticle after rehydration. Insect cuticle is a biological composite with a protein matrix and embedded chitin fibers [17]. It is the only biological composite that has been modelled successfully using the modified Voigt estimate of the

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

• . Heparin is a highly attractive natural polysaccharide for incorporation in scaffolds and NPs. Its highly negative charges enable heparin to form an electrostatic interaction with growth factors. Therefore, heparin can be employed as an essential component of NPs to develop a controlled release platform

• significantly higher rate of differentiation by incorporation of CNTs into the PLGA scaffold. Most studies regarding CNT-incorporated nanocomposites have reported enhanced mechanical strength and biocompatibility. Although this mostly arises from the considerable structural rigidity of CNTs, the interaction of

Alcohol-perturbed self-assembly of the tobacco mosaic virus coat protein

• Ismael Abu-Baker and
• Amy Szuchmacher Blum

Beilstein J. Nanotechnol. 2022, 13, 355–362, doi:10.3762/bjnano.13.30

• hydrophobic interaction strength in the presence of alcohol and reduced particle–particle repulsion near the isoelectric point (5.09) of TMV-cp. This is very similar to what was previously observed in water–alcohol–LiCl solutions [33]. To further investigate the effect of alcohols on the protein self-assembly

• rods. This could be the result of increased hydrophobic interaction strength, as determined by Lee and co-workers [33]. If disks interact with each other too strongly in the initial non-helical conformation, the energy barrier to rearrange into a helical conformation may become prohibitive. Potential

Selected properties of Al_xZn_yO thin films prepared by reactive pulsed magnetron sputtering using a two-element Zn/Al target

• Witold Posadowski,
• Artur Wiatrowski,
• Jarosław Domaradzki and
• Michał Mazur

Beilstein J. Nanotechnol. 2022, 13, 344–354, doi:10.3762/bjnano.13.29

• interaction of charged particles (mainly electrons that escape from the magnetic trap directly over pole pieces) with the growing film. Using on-axis geometry, it was found that secondary electrons emitted from the target and negative oxygen ions influence the texture of the growing AZO film and decrease its

Controllable two- and three-state magnetization switching in single-layer epitaxial Pd_1−xFe_x films and an epitaxial Pd_0.92Fe_0.08/Ag/Pd_0.96Fe_0.04 heterostructure

• Igor V. Yanilkin,
• Amir I. Gumarov,
• Gulnaz F. Gizzatullina,
• Roman V. Yusupov and
• Lenar R. Tagirov

Beilstein J. Nanotechnol. 2022, 13, 334–343, doi:10.3762/bjnano.13.28

• -parallel (AP), and orthogonal (OG) can be realized in the epitaxial PdFe1/N/PdFe2 heterostructure by choosing the appropriate magnetic field direction and varying the applied magnetic field pulse amplitude. An important condition for this is an absence of a substantial magnetic interaction between the

Plasma modes in capacitively coupled superconducting nanowires

• Alex Latyshev,
• Andrew G. Semenov and
• Andrei D. Zaikin

Beilstein J. Nanotechnol. 2022, 13, 292–297, doi:10.3762/bjnano.13.24

• interaction between quantum phase slips (QPS) [1][2][17][18] causing Berezinskii–Kosterlitz–Thouless-like [17] and Schmid-like [19][20][21] quantum phase transitions in structures involving superconducting nanowires. In this work we are going to investigate propagation of plasma modes in a system of two long

• capacitively coupled superconducting nanowires. We are going to demonstrate that in the presence of electromagnetic interaction between the wires their plasma modes get split into a pair of “new” modes propagating along the system with two different velocities. This effect may have various implications for the

• wire length) and geometric capacitances C1 and C2 (per unit length). In the absence of any interaction between the wires they represent two independent transmission lines where low-energy plasma excitations propagate with velocities and , respectively, in the first and the second wires. Note that the

Coordination-assembled myricetin nanoarchitectonics for sustainably scavenging free radicals

• Xiaoyan Ma,
• Haoning Gong,
• Kenji Ogino,
• Xuehai Yan and
• Ruirui Xing

Beilstein J. Nanotechnol. 2022, 13, 284–291, doi:10.3762/bjnano.13.23

• interaction (Myr/GSH = 1:2) [32][33][34]. The nanoparticles were formed by coordination self-assembly of Zn2+, Myr, and GSH (Figure 1a). They were expected to show good antioxidant activity to protect cells from the ROS-induced damage (Figure 1b). The transmission electron microscopy (TEM) image in Figure 2a

• that the average size and size distribution did not change over time (Figure 1e,f). The results indicate that MZG nanoparticles are stable in water and culture medium. Although noncovalent interactions are relatively weak compared to covalent interactions, the metal coordination interaction is the

• strongest noncovalent interaction [4]. Hence, this interaction assured the stability of assembled nanoparticles in physiological conditions. Evaluation of ROS scavenging activity Myr possesses excellent antioxidant activity to scavenge ROS, which has impact on chelate metal ions such as Fe2+ and Cu2

Photothermal ablation of murine melanomas by Fe₃O₄ nanoparticle clusters

• Xue Wang,
• Lili Xuan and
• Ying Pan

Beilstein J. Nanotechnol. 2022, 13, 255–264, doi:10.3762/bjnano.13.20

• with the oleic acid and oleylamine ligands present on the surface of Fe3O4 nanoparticles through van der Waals forces to facilitate the dispersion of nanoparticles in aqueous solution. Further addition of ethylene glycol weakened the van der Waals interaction, causing decomposition of nanoparticle

Effects of drug concentration and PLGA addition on the properties of electrospun ampicillin trihydrate-loaded PLA nanofibers

• Tuğba Eren Böncü and
• Nurten Ozdemir

Beilstein J. Nanotechnol. 2022, 13, 245–254, doi:10.3762/bjnano.13.19

• composition, porosity, average size, distribution, individual nanofiber orientation, interaction between nanofibers, and arrangement and entanglement of the nanofibers [27][28][29]. When the mechanical properties of PLA nanofibers containing different amounts of drug were examined, the increase in the amount

Engineered titania nanomaterials in advanced clinical applications

• Padmavati Sahare,
• Paulina Govea Alvarez,
• Juan Manual Sanchez Yanez,
• Gabriel Luna-Bárcenas,
• Samik Chakraborty,
• Sujay Paul and
• Miriam Estevez

Beilstein J. Nanotechnol. 2022, 13, 201–218, doi:10.3762/bjnano.13.15

• found that nps smaller than 100 nm produce more ROS due to their higher surface area [29]. Properties of nps such as surface charge density and zeta potential are influential in determining their reactivity, agglomeration properties, interaction with cells, stability in complex media, and adsorption of

• surface chemistry play a significant role in the interaction between proteins and cells and the material surface. It has also been shown that hydroxyapatite and calcium phosphate mimics the chemical composition of natural bone. Thus, with the use of these components in the coating, TiO2 implants have

• , a positively charged molecule will have strong ionic interaction, and the release rate will be slower. This can be described mathematically using Fick’s law, compared to a negatively charged molecule that follows first-order kinetics [104]. Some recent studies indicated that nanostructured Ti wires

Low-energy electron interaction and focused electron beam-induced deposition of molybdenum hexacarbonyl (Mo(CO)₆)

• Po-Yuan Shih,
• Maicol Cipriani,
• Christian Felix Hermanns,
• Jens Oster,
• Klaus Edinger,
• Armin Gölzhäuser and
• Oddur Ingólfsson

Beilstein J. Nanotechnol. 2022, 13, 182–191, doi:10.3762/bjnano.13.13

• source [3][4][5]. The organometallic precursors are continuously supplied to a substrate surface in proximity to the impact side of a tightly focused, high-energy electron beam in a high-vacuum instrument. Ideally, the organometallic precursor is completely dissociated through the interaction with the

• and their efficiency, and they induce different fragmentation patterns. Thus, in order to better understand the performance of individual FEBID precursors, studies on their interaction with low-energy electrons are important. Metal carbonyls are generally well suited for the use in FEBID as many of

• (CO)6 have been reported in recent years [14][15][16][17]. Earlier studies on the low-energy electron interaction with metal carbonyls include an electron transmission spectroscopy study [18] on W(CO)6, Cr(CO)6 and Mo(CO)6 from the early 1980s, dissociative electron attachment studies on Fe(CO)5, W(CO

Thermal oxidation process on Si(113)-(3 × 2) investigated using high-temperature scanning tunneling microscopy

• Hiroya Tanaka,
• Shinya Ohno,
• Kazushi Miki and
• Masatoshi Tanaka

Beilstein J. Nanotechnol. 2022, 13, 172–181, doi:10.3762/bjnano.13.12

• faceting associated with the attractive force between the steps. It is noted that the trend of step bunching with the steps along the direction is consistent with the observation in the literature [16], which may be due to the effective attractive interaction between the steps [15]. No dark depression

• attractive interaction between the steps take place competitively. We constructed a precise temperature–pressure growth mode diagram for Si(113) as well as for Si(111), and compared the results with those for Si(001) reported in the literature [17]. It is apparent that the oxidation conditions corresponding

Theoretical understanding of electronic and mechanical properties of 1T′ transition metal dichalcogenide crystals

• Seyedeh Alieh Kazemi,
• Sadegh Imani Yengejeh,
• Vei Wang,
• William Wen and
• Yun Wang

Beilstein J. Nanotechnol. 2022, 13, 160–171, doi:10.3762/bjnano.13.11

• strength along the z-direction can be ascribed to the weaker van der Waals interlayer interaction along the z-direction compared to the strong covalent bonding between TM and X atoms within the xy-plane. It suggests that the axial and transverse loading models can lead to the much different mechanical

• elastic constants are slightly larger in the monolayers, except the C12 of diselenides. It further supports that the TM cations have a stronger interaction with X anions in the monolayer than in the crystal, which correlates with the change of the lattice constants. It suggests that the interlayer vdW

• interactions can weaken the TM–X interaction within the layers, although the impact is small. As a result, layered 1T′ TMD crystals have slightly different structural and mechanical properties. This is also supported by recent experimental observations. Additionally, the changes of the lattice constants and

A photonic crystal material for the online detection of nonpolar hydrocarbon vapors

• Evgenii S. Bolshakov,
• Aleksander V. Ivanov,
• Andrei A. Kozlov,
• Anton S. Aksenov,
• Elena V. Isanbaeva,
• Sergei E. Kushnir,
• Aleksei D. Yapryntsev,
• Aleksander E. Baranchikov and
• Yury A. Zolotov

Beilstein J. Nanotechnol. 2022, 13, 127–136, doi:10.3762/bjnano.13.9

• ) formation of a sensitive polymer matrix, (b) impregnation of the reagent, (c) immobilization of the reagent and (d) preparation of the sensor elements from molecularly imprinted polymers. Organic solvents are usually detected by using polymer matrix sensors (Table 1) through matrix interaction [7][8][9][15

• or redshift) or the color intensity of the sensor serves as an analytical signal for such sensors. The standard method for measuring an analytical signal is specular reflectance spectroscopy within the visible range; however, the interaction of a 2D PhC with the analyte is also analyzed by changing

• are a CCA of polystyrene submicrometer particles embedded in a polydimethylsiloxane (PDMS) layer. The matrix interaction was responsible for the main mechanism, which was monitored by configuration changes of the photonic bandgap using diffuse reflectance spectroscopy. Results and Discussion

Tin dioxide nanomaterial-based photocatalysts for nitrogen oxide oxidation: a review

• Viet Van Pham,
• Hong-Huy Tran,
• Thao Kim Truong and
• Thi Minh Cao

Beilstein J. Nanotechnol. 2022, 13, 96–113, doi:10.3762/bjnano.13.7

• photocatalytic mechanisms, and the polymer photodegradation of the resulting nanocomposite using DFT techniques. The results confirmed that the interaction between NO and PANI is indeed a hydrogen bond and photogenerated holes serve as the primary factor of the photocatalytic NO removal [35]. Moreover, this

Theranostic potential of self-luminescent branched polyethyleneimine-coated superparamagnetic iron oxide nanoparticles

• Rouhollah Khodadust,
• Ozlem Unal and
• Havva Yagci Acar

Beilstein J. Nanotechnol. 2022, 13, 82–95, doi:10.3762/bjnano.13.6

• cytochrome c [57]. Covalent binding of Erb to the surface of SPION@bPEI may somehow switch off the intrinsic cytotoxicity by hindering the primary amine interaction with box proteins. These can be some of the possible reasons for cytotoxicity reduction of SPION@bPEI after surface modification with Erb. To

Nanoscale friction and wear of a polymer coated with graphene

• Robin Vacher and
• Astrid S. de Wijn

Beilstein J. Nanotechnol. 2022, 13, 63–73, doi:10.3762/bjnano.13.4

• using LAMMPS [29]. We use the same simulation setup for the polymer as in our previous work [23]. We summarise this setup below. Interaction potentials PVA is described using a united-atom force field developed by Müller-Plathe and co-workers [30]. Each polymer particle represents a monomer of one

• structural unit (C2H4O) (see Figure 1). The nonbonded interaction is given by a Lennard-Jones 9-6 potential, where ε0 = 0.0179 eV, σ0 = 4.628 Å, and r is the distance between the interacting monomers. The bonded interactions are described by a harmonic potential Vbond = K(r − r0)2, where K = 2.37 eV/Å2 is

• implemented in LAMMPS: The interaction between PVA and graphene is modelled using a Lennard-Jones 12-6 potential and the Lorentz–Berlot mixing rule, so that σ1 = 4.025 Å, and ε1 = 0.015066 eV. We model the interaction between the silicon tip and graphene using a Lennard-Jones 12-6 with the same parameters

Sputtering onto liquids: a critical review

• Anastasiya Sergievskaya,
• Adrien Chauvin and
• Stephanos Konstantinidis

Beilstein J. Nanotechnol. 2022, 13, 10–53, doi:10.3762/bjnano.13.2

• Anastasiya Sergievskaya Adrien Chauvin Stephanos Konstantinidis Plasma-Surface Interaction Chemistry (ChIPS), University of Mons, 23 Place du Parc, B-7000 Mons, Belgium Department of Condensed Matter Physics, Faculty of Mathematics and Physics, Charles University, Ke Karlovu 5, 121 16 Praha 2

• methods are based on physical transformations of matter. These methods mainly operate with a “top-down” strategy where bulk materials are reduced in size, down to the nanoscale, via their interaction with photons, heat, or ions or via mechanical milling. Those methods are valuable as they are free from

• are expelled out of the surface, that is, sputtered. More information about the theory of ion-induced sputtering can be found in [8]. Ion–surface interaction and sputtering yield data can be calculated using codes such as SRIM [35] and TRYDIN [36], while transport of the sputtered species through the

Topographic signatures and manipulations of Fe atoms, CO molecules and NaCl islands on superconducting Pb(111)

• Carl Drechsel,
• Philipp D’Astolfo,
• Jung-Ching Liu,
• Thilo Glatzel,
• Rémy Pawlak and
• Ernst Meyer

Beilstein J. Nanotechnol. 2022, 13, 1–9, doi:10.3762/bjnano.13.1

• between two materials, exhibiting particle–hole symmetry and spin–orbit interaction [8]. Among the most promising platforms to realize MZMs are semiconducting nanowires with large spin–orbit coupling [9][10][11][12] or atomic chains [13][14][15][16][17][18] in proximity to an s-wave superconductor. The

• , which might be related to a strong interaction with the Pb lattice. While the D features are all aligned in the same direction, the orientation of the T features differs slightly. Both features have an apparent height of ≈0.3 Å, as extracted from the profile of Figure 2b, displayed in Figure 2c. Overall

• observed at much higher temperatures on both surfaces. Dimer and chain structures were always aligned perpendicularly to the close-packed rows suggesting an attractive interaction along the [001] direction of the substrate [58]. CO adsorption sites were found with the C atom on top of Cu or Cu-O rows

Heating ability of elongated magnetic nanoparticles

• Elizaveta M. Gubanova,
• Nikolai A. Usov and
• Vladimir A. Oleinikov

Beilstein J. Nanotechnol. 2021, 12, 1404–1412, doi:10.3762/bjnano.12.104

• -dipole interaction on the SAR of a dilute assembly of oriented clusters of elongated magnetite nanoparticles has also been investigated depending on the volume fraction of nanoparticles in a cluster. It has been found that the SAR of the assembly of oriented clusters decreases by approximately an order

• interaction on the SAR of a dilute assembly of oriented clusters consisting of spheroidal magnetite nanoparticles. To calculate the energy of MD interaction between single-domain spheroidal particles of an oriented cluster we used the general formula [49]: where Bij are the elements of the MD interaction

• matrix. For a pair of oriented spheroidal nanoparticles with an aspect ratio a/b > 1 the expressions for nonzero elements of the MD interaction matrix Bxx, Bуу, Bzz, and Bxz were obtained [50] numerically depending on the distance between the nanoparticle centers. The calculation of low-frequency

Alteration of nanomechanical properties of pancreatic cancer cells through anticancer drug treatment revealed by atomic force microscopy

• Xiaoteng Liang,
• Shuai Liu,
• Xiuchao Wang,
• Dan Xia and
• Qiang Li

Beilstein J. Nanotechnol. 2021, 12, 1372–1379, doi:10.3762/bjnano.12.101

• aggressive cancer cell BxPC-3. In addition, the Young's modulus of MIA PaCa-2 rises with the increasing of DOX concentration. This study may provide a new strategy of detecting cancer, and evaluate the possible interaction of drugs on cells. Keywords: anticancer drug; atomic force microscopy; nanomechanical

• the physical properties of HeLa cells treated by docetaxel are different from that of untreated ones [9]. Therefore, the study of drug–cell interaction regarding cellular mechanics could be an effective way for drug evaluation. Important information, including drug efficacy and safety can be obtained

• PaCa-2 was cultured in DMEM high-glucose medium with 10% fetal bovine serum, 2.5% horse serum, 1% sodium pyruvate and 1% double antibody. Cells are cultured in a humidified atmosphere at 37 °C with 5% CO2. For the cell–drug interaction, DOX in different concentrations (10, 30, and 50 µg/mL) was added

Chemical vapor deposition of germanium-rich CrGe_x nanowires

• Vladislav Dřínek,
• Stanislav Tiagulskyi,
• Roman Yatskiv,
• Jan Grym,
• Radek Fajgar,
• Věra Jandová,
• Martin Koštejn and
• Jaroslav Kupčík

Beilstein J. Nanotechnol. 2021, 12, 1365–1371, doi:10.3762/bjnano.12.100

• their magnetic defects and their interactions with charge carriers. Antiferromagnetic clusters in CrGe NWs were investigated using electron spin resonance. Spin–orbit interaction between charge carriers and magnetic defects were studied [9]. Cr/Ge nanotowers as a dilute magnetic semiconductor were

Biocompatibility and cytotoxicity in vitro of surface-functionalized drug-loaded spinel ferrite nanoparticles

• Sadaf Mushtaq,
• Khuram Shahzad,
• Tariq Saeed,
• Anwar Ul-Hamid,
• Bilal Haider Abbasi,
• Nafees Ahmad,
• Waqas Khalid,
• Muhammad Atif,
• Zulqurnain Ali and
• Rashda Abbasi

Beilstein J. Nanotechnol. 2021, 12, 1339–1364, doi:10.3762/bjnano.12.99

• potential values is the interaction between NPs and serum proteins present in DMEM [30]. In cell culture media, NPs agglomerate with serum proteins and are therefore recruited in cells via the protein corona effect, which increases the bioavailability of NPs by many folds [31]. PMA-coated samples have a

• smaller hydrodynamic size (60–93 nm) as compared to drug-loaded samples (74–110 nm), which was further increased (132–210 nm) in DMEM due to the interaction between proteins and samples. Among them, NFO has the largest hydrodynamic size (>200 nm) in DMEM, which is not considered suitable for biological

• determine the genotoxicity of drug-loaded NPs in HepG2 and HT144 cells (Figure 7a). The olive tail moment was measured for each sample and a relative calculation with respect to NTC was performed as a measurement of DNA damage (Figure 7b). The genotoxic effect of NPs may arise from their direct interaction