Photocatalytic methane oxidation over a TiO₂/SiNWs p–n junction catalyst at room temperature

• Qui Thanh Hoai Ta,
• Luan Minh Nguyen,
• Ngoc Hoi Nguyen,
• Phan Khanh Thinh Nguyen and
• Dai Hai Nguyen

Beilstein J. Nanotechnol. 2024, 15, 1132–1141, doi:10.3762/bjnano.15.92

• surface interaction with gases during photocatalytic oxidative coupling can be analyzed using water contact angle analysis (as shown in Supporting Information File 1, Figure S2). The wettability of pure p-Si and the p-Si NW array are illustrated in Figure S3 (Supporting Information File 1). Pure p-Si had

• Information File 1, Figure S2. The contact angle between horizontal sample surface and the perimeter of the water drop was measured after 10 s of interaction. The in situ photocurrent measurements were carried out in the presence of gaseous reactants (CH4/air = 4.5/0.5) ranging from −2 V to +3 V under dark

Direct electron beam writing of silver using a β-diketonate precursor: first insights

• Katja Höflich,
• Krzysztof Maćkosz,
• Chinmai S. Jureddy,
• Aleksei Tsarapkin and
• Ivo Utke

Beilstein J. Nanotechnol. 2024, 15, 1117–1124, doi:10.3762/bjnano.15.90

• irradiated with primary electrons, which is caused by the backscattered electrons generated by the interaction with the substrate [28]. Figure 1b shows the corresponding Monte-Carlo simulation of the secondary and backscattered electron (SE + BSE) distribution for a Gaussian beam of 250 nm FWHM impinging on

• parasitic co-deposition occurred below the actual helix wires caused by the residual primary electrons that penetrate the helix arms [39]. This can potentially be reduced by lowering the primary beam energy and, correspondingly, the interaction volume, while at the same time a more circular cross section of

Recent updates in applications of nanomedicine for the treatment of hepatic fibrosis

• Damai Ria Setyawati,
• Fransiska Christydira Sekaringtyas,
• Riyona Desvy Pratiwi,
• A’liyatur Rosyidah,
• Rohimmahtunnissa Azhar,
• Nunik Gustini,
• Gita Syahputra,
• Idah Rosidah,
• Etik Mardliyati,
• Tarwadi and
• Sjaikhurrizal El Muttaqien

Beilstein J. Nanotechnol. 2024, 15, 1105–1116, doi:10.3762/bjnano.15.89

• small interfering RNA) for hereditary transthyretin amyloidosis (ATTR) [10]. Here, we describe the mechanism of nanomedicine-based drug delivery for liver fibrosis treatment. In the following review, we briefly summarize the basic physiology of liver fibrosis, the interaction between NPs and the liver

• in the liver [27][28]. The interaction of the nanocarriers with various types of cells is size-dependent [30]. Nanocarriers with a particle size bigger than 100 nm could be taken up by LSECs and Kupffer cells through endocytosis. With the increase of particle size, the uptake of nanocarriers by

Unveiling the potential of alginate-based nanomaterials in sensing technology and smart delivery applications

• Shakhzodjon Uzokboev,
• Khojimukhammad Akhmadbekov,
• Ra’no Nuritdinova,
• Salah M. Tawfik and
• Yong-Ill Lee

Beilstein J. Nanotechnol. 2024, 15, 1077–1104, doi:10.3762/bjnano.15.88

• nanoparticles have demonstrated enormous advantages for sensing applications. First, alginate-based nanoparticles have a high surface area-to-volume ratio. This feature allows for increased interaction with the target analyte, leading to enhanced sensitivity and detection capabilities. Additionally, alginate

• efficiency of 81.2% and a high drug loading capacity of 18.3% were obtained. Furthermore, at pH 5.0, 90% of the DOX was released from the conjugated NPs. An acidic environment can be cause for the reduced electrostatic interaction between alginate and DOX. It is noteworthy that KB cancer cells effectively

Effect of wavelength and liquid on formation of Ag, Au, Ag/Au nanoparticles via picosecond laser ablation and SERS-based detection of DMMP

• Sree Satya Bharati Moram,
• Chandu Byram and
• Venugopal Rao Soma

Beilstein J. Nanotechnol. 2024, 15, 1054–1069, doi:10.3762/bjnano.15.86

• implications for developing more efficient and stable SERS substrates for chemical detection applications. Keywords: dimethyl methyl phosphonate; laser material interaction; metal nanoparticles; picosecond laser ablation; SERS; thiram; Introduction Metal nanoparticles (NPs) are versatile materials widely

• wavelengths (1064 nm). This broadening could be ascribed to the size/shape of the NPs, their aggregation, and variations in size distribution under different laser wavelengths. The NP productivity in the LASiS approach is mainly influenced by laser wavelength irradiation based on the interaction of the

• , and (c) 1064 nm) in DW are shown. At 355 nm, a distinctive nanochain morphology linking spherical NPs was evident, contrasting with the separated spherical morphology. The prevalent interaction at 355 nm with the liquid phase was more influential than the NP production, resulting in particles with

Interface properties of nanostructured carbon-coated biological implants: an overview

• Mattia Bartoli,
• Francesca Cardano,
• Erik Piatti,
• Stefania Lettieri,
• Andrea Fin and
• Alberto Tagliaferro

Beilstein J. Nanotechnol. 2024, 15, 1041–1053, doi:10.3762/bjnano.15.85

• due to mere surface interactions, as summarized in Figure 3. The interaction between implants and the immune system is highly tissue-specific, with different responses observed depending on the implantation sites. Usually, the insertion of an implant is followed by the adsorption of plasma components

• potential influenced the mechanical characteristics, suggesting a better interaction with the surrounding tissues. Jozwik et al. [147] also reported the long durability of ND coatings in heart implants without any appreciable decrement of performance. Furthermore, ND layers can be easily integrated with

• with peculiar chemical reactivity and resistance to oxidative stress. Summary and Future Perspectives The results herein discuss the complex scenario of the interaction between implants and living tissues, which is still far from being fully understood. The engineering of implant surfaces with

Entry of nanoparticles into cells and tissues: status and challenges

• Kirsten Sandvig,
• Tore Geir Iversen and
• Tore Skotland

Beilstein J. Nanotechnol. 2024, 15, 1017–1029, doi:10.3762/bjnano.15.83

• of new types of NPs, there is a knowledge gap when it comes to our understanding of the interaction of NPs with both cells and tissues. However, it is well known that NP properties, such as surface charge, size, and the material they are composed of can affect cellular uptake, biodistribution, and

Ca_n neutral clusters: a two-step G₀W₀ and DFT benchmark

• Sunila Bakhsh,
• Sameen Aslam,
• Muhammad Khalid,
• Muhammad Sohail,
• Sundas Zafar,
• Sumayya Abdul Wadood,
• Kareem Morsy and
• Muhammad Aamir Iqbal

Beilstein J. Nanotechnol. 2024, 15, 1010–1016, doi:10.3762/bjnano.15.82

• . Apart from the accuracy of the functional, there can be a van der Waals interaction effect for clusters, which can be calculated by semi-empirical corrections added to the conventional density functional approximation and needs detailed assessment for small clusters (n = 2–10). In such cases, DFT-D

Recent progress on field-effect transistor-based biosensors: device perspective

• Billel Smaani,
• Fares Nafa,
• Mohamed Salah Benlatrech,
• Ismahan Mahdi,
• Hamza Akroum,
• Mohamed walid Azizi,
• Khaled Harrar and
• Sayan Kanungo

Beilstein J. Nanotechnol. 2024, 15, 977–994, doi:10.3762/bjnano.15.80

• heterogeneous environment. Additionally, the amplifier increases the signal that is produced by the transducer element [50]. In this sense, the transducer is responsible for converting the interaction that occurs between the biorecognition component and the analyte into a signal. Also, an immobilized biological

• . The first transduction mechanism is known as charge modulation, in which charged biomolecule species bind to the surface of the gate insulator and modify the charge density of the channel surface, and thus the surface conductivity by Coulomb interaction. This acts as a gating mechanism, and

Electrospun nanofibers: building blocks for the repair of bone tissue

• Tuğrul Mert Serim,
• Gülin Amasya,
• Tuğba Eren-Böncü,
• Ceyda Tuba Şengel-Türk and
• Ayşe Nurten Özdemir

Beilstein J. Nanotechnol. 2024, 15, 941–953, doi:10.3762/bjnano.15.77

• increases, entanglement and interaction of polymer chains will occur to a greater extent, resulting in an increase in elastic properties of the fibers [54]. Polymer molecular weight The molecular weight of the polymer is another important parameter regarding electrospinning as it affects solution viscosity

• observed. Pore size and porosity percentage are also related to the molecular weight of the polymer [57][66]. Solvent or solvent mixture The solvent, or the solvent mixture, used is critical for the stable formation of a Taylor cone. It affects the intermolecular interaction in the polymer–solvent system

Effects of cutting tool geometry on material removal of a gradient nanograined CoCrNi medium entropy alloy

• Yu-Sheng Lu,
• Yu-Xuan Hung,
• Thi-Xuyen Bui and
• Te-Hua Fang

Beilstein J. Nanotechnol. 2024, 15, 925–940, doi:10.3762/bjnano.15.76

• carried out with time steps of 0.001 ps and a 10 ps equilibrium process. Table 1 shows the MD simulation parameters of the GNG CoCrNi MEA cutting process for this study. The embedded atom method (EAM) potential from Farkas et al. [11] was utilized for modeling the atomic interaction of the atoms in the

• CoCrNi MEA substrates. The Lennard-Jones (LJ) potential was used to model the interaction among tool and sample atoms, and among the atoms in the tool [12][13][14][15]. The parameters of the LJ potential are displayed in Table 2. The MD cutting simulations were carried out using the large-scale atomic

Water-assisted purification during electron beam-induced deposition of platinum and gold

• Cristiano Glessi,
• Fabian A. Polman and
• Cornelis W. Hagen

Beilstein J. Nanotechnol. 2024, 15, 884–896, doi:10.3762/bjnano.15.73

• accessible in purification during deposition since the amount of intact MeCpPtMe3 molecules adsorbed to the substrate should be larger. Similarly, the protonation of an acetylacetonate ligand to form acetylacetone causes the formation of a much weaker metal–ligand interaction. Such an acetylacetonate ligand

A review on the structural characterization of nanomaterials for nano-QSAR models

• Salvador Moncho,
• Eva Serrano-Candelas,
• Jesús Vicente de Julián-Ortiz and
• Rafael Gozalbes

Beilstein J. Nanotechnol. 2024, 15, 854–866, doi:10.3762/bjnano.15.71

• its interaction with other substances, as for example using the maximum salt concentration in the medium with no significant coagulation or the rate constant of its oxidation by hydrogen peroxide [68]. It should be noted that the use of experimental descriptors can be exclusive, and there are models

Synthesis of silver–palladium Janus nanoparticles using co-sputtering of independent sources: experimental and theorical study

• Maria J. Martínez-Carreón,
• Francisco Solís-Pomar,
• Abel Fundora,
• Claudio D. Gutiérrez-Lazos,
• Sergio Mejía-Rosales,
• Hector N. Fernández-Escamilla,
• Jonathan Guerrero-Sánchez,
• Manuel F. Meléndrez and
• Eduardo Pérez-Tijerina

Beilstein J. Nanotechnol. 2024, 15, 808–816, doi:10.3762/bjnano.15.67

• constraints until the forces were less than 0.02 eV/Å. To consider surface effects, we break the symmetry along the z axis by introducing a vacuum space of 20 Å to preclude surface self-interaction. The Brillouin zone for the 3D bulk phases was sampled with an 8 × 8 × 8 k-points mesh under the Monkhorst–Pack

Electron-induced ligand loss from iron tetracarbonyl methyl acrylate

• Hlib Lyshchuk,
• Atul Chaudhary,
• Thomas F. M. Luxford,
• Miloš Ranković,
• Jaroslav Kočišek,
• Juraj Fedor,
• Lisa McElwee-White and
• Pamir Nag

Beilstein J. Nanotechnol. 2024, 15, 797–807, doi:10.3762/bjnano.15.66

• the interaction with free electrons. The motivation comes from the possible use of this molecule as a nanofabrication precursor and from the corresponding need to understand its elementary reactions fundamental to the electron-induced deposition. We utilize two complementary electron collision setups

• (FEBID). FEBID is an emerging method for the fabrication of 3D nanostructures. It relies on the local decomposition of precursors in the focal area of an electron beam [1][2][3][4]. In the case of deposition of metals, the interaction with the electrons should ideally lead to a cleavage of all metal

• presence of a plume of slow electrons in the deposition region. While the primary focused beam typically has an energy of tens of kiloelectronvolts, the distribution of secondary backscattered electrons often peaks at tens of electronvolts [7]. Interaction of precursors with these secondary electrons also

Electrospun polysuccinimide scaffolds containing different salts as potential wound dressing material

• Veronika Pálos,
• Krisztina S. Nagy,
• Rita Pázmány,
• Krisztina Juriga-Tóth,
• Bálint Budavári,
• Judit Domokos,
• Dóra Szabó,
• Ákos Zsembery and
• Angela Jedlovszky-Hajdu

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

• 1434, 1338, and 810 cm−1. However, for the 810 cm−1 peak, there was a parallel shift towards higher wavenumbers after mixing with the polymer. This can indicate physical interaction between the polymer and the salt, although the chemical interaction would be a more characteristic change in the position

• % of the maximal salt concentration was solubilized after 8 h, which is not in correlation with database information, since the solubility of Zn(O2CCH3)2 at 25 °C is 40 g/100 g of water [55]. This suggests that an interaction between PSI and Zn(O2CCH3)2 prevents the salt from entirely dissolving from

Exploring surface charge dynamics: implications for AFM height measurements in 2D materials

• Mario Navarro-Rodriguez,
• Andres M. Somoza and
• Elisa Palacios-Lidon

Beilstein J. Nanotechnol. 2024, 15, 767–780, doi:10.3762/bjnano.15.64

• of surface charges and their intricate interaction with the tip. Keywords: 2D materials; incorrect height measurements; Joule dissipation; surface conductivity; tip influence; Introduction Two-dimensional (2D) materials have emerged as a promising platform for next-generation electronic devices [1

• the dissipation. In this mode, the amplitude reduction may be due to (i) the tip–sample interaction (conservative or non-conservative), which shifts the resonance frequency and, therefore, makes the excitation go out of resonance, (ii) non-conservative interactions, which dissipate parts of the

• identify, in addition to the previously described interactions, an additional contribution to the tip–sample interaction due to the movement of charges on the surface induced by the oscillating tip. To understand and quantify this mechanism, we have proposed a very general model that solves Maxwell’s

Green synthesis of biomass-derived carbon quantum dots for photocatalytic degradation of methylene blue

• Dalia Chávez-García,
• Mario Guzman,
• Viridiana Sanchez and
• Rubén D. Cadena-Nava

Beilstein J. Nanotechnol. 2024, 15, 755–766, doi:10.3762/bjnano.15.63

• the biomass source. Considering that the MB molecule contains azo bonds consisting of double bonds (–N=N–), it is possible to foresee a strong interaction with C–N groups on the surface of species M3 and M7. On the other hand, such C–N groups could cause a shift in the electronic energy states [43

Level set simulation of focused ion beam sputtering of a multilayer substrate

• Alexander V. Rumyantsev,
• Nikolai I. Borgardt,
• Roman L. Volkov and
• Yuri A. Chaplygin

Beilstein J. Nanotechnol. 2024, 15, 733–742, doi:10.3762/bjnano.15.61

• atoms of the i-th material equal to where θ′ is the angle between the normal to the surface element dS and the vector shown by the blue dashed line in Figure 1b, the distribution function was calculated for the surface element dS1 (Figure 1), integration was performed over the whole interaction

• krypton–carbon interaction potential [41] and the default surface binding model. For silicon atoms, both in chemically pure silicon and in silicon dioxide, the surface binding energy was set equal to 4.72 eV, while an oxygen surface binding energy of 2.58 eV was chosen according to [40]. The number of

Simultaneous electrochemical determination of uric acid and hypoxanthine at a TiO₂/graphene quantum dot-modified electrode

• Vu Ngoc Hoang,
• Dang Thi Ngoc Hoa,
• Nguyen Quang Man,
• Le Vu Truong Son,
• Le Van Thanh Son,
• Vo Thang Nguyen,
• Le Thi Hong Phong,
• Ly Hoang Diem,
• Kieu Chan Ly,
• Ho Sy Thang and
• Dinh Quang Khieu

Beilstein J. Nanotechnol. 2024, 15, 719–732, doi:10.3762/bjnano.15.60

• 1357 and 1593 cm−1, respectively, in the TiO2/GQDs spectrum. The difference in ID/IG ratio, 0.94 for GQDs and 0.71 for TiO2/GQDs, may be due to the interaction between TiO2 and GQDs. Figure 3 presents TEM observations of the obtained materials. The morphology of TiO2 shows agglomerates of around 50–80

• with pKa = 8.7 [31]. The improved reversibility and sensitivity of the modified electrode may be due to the electrostatic interaction between positively charged URI and HYP and negatively charged GQD at remaining COO− groups, the complexation of titanium to nitrogen or oxygen, or π–π interactions

Enhancing higher-order modal response in multifrequency atomic force microscopy with a coupled cantilever system

• Wendong Sun,
• Jianqiang Qian,
• Yingzi Li,
• Yanan Chen,
• Zhipeng Dou,
• Rui Lin,
• Peng Cheng,
• Xiaodong Gao,
• Quan Yuan and
• Yifan Hu

Beilstein J. Nanotechnol. 2024, 15, 694–703, doi:10.3762/bjnano.15.57

• beam. They are shown in Figure 1a. The Bode plots of the non-contact tip–sample interaction [12] and the contact tip–sample interaction [23] can be obtained through transfer function analysis. The results indicate that the higher-order modal response of the traditional rectangular cantilever gradually

Gold nanomakura: nanoarchitectonics and their photothermal response in association with carrageenan hydrogels

• Nabojit Das,
• Vikas,
• Akash Kumar,
• Sanjeev Soni and
• Raja Gopal Rayavarapu

Beilstein J. Nanotechnol. 2024, 15, 678–693, doi:10.3762/bjnano.15.56

• File 1, Figure S2. Photothermal response study of AuNMs and AuNRs The measured photothermal response (i.e., temporal change in temperature) of various gold nanomakura particles and gold nanorods upon photothermal interaction in different forms (i.e., suspension, powder, and incorporated within k-CG

• . Also, suspensions of CTAB-AuNM, MTAB-AuNM, and DTAB-AuNM attained maximum temperature rise of up to 21.0, 18.3, and 19.5 °C on visible broadband interaction, respectively. On the other hand, CTAB-AuNR and DTAB-AuNR suspensions showed a temperature rise of up to 16.7 and 20 °C, respectively, as shown in

• , and DTAB-AuNM on photothermal interaction with a visible broadband light source for 300 s are shown in Figure 8c. The temperature rise in AuNMs capped with CTAB, MTAB, and DTAB attains up to ≈25, ≈21, and ≈21 °C, respectively, in powdered form. The thermal images captured for the same conditions are

Laser synthesis of nanoparticles in organic solvents – products, reactions, and perspectives

• Theo Fromme,
• Sven Reichenberger,
• Katharine M. Tibbetts and
• Stephan Barcikowski

Beilstein J. Nanotechnol. 2024, 15, 638–663, doi:10.3762/bjnano.15.54

Stiffness calibration of qPlus sensors at low temperature through thermal noise measurements

• Laurent Nony,
• Sylvain Clair,
• Daniel Uehli,
• Aitziber Herrero,
• Jean-Marc Themlin,
• Andrea Campos,
• Franck Para,
• Alessandro Pioda and
• Christian Loppacher

Beilstein J. Nanotechnol. 2024, 15, 580–602, doi:10.3762/bjnano.15.50

• to perform frequency shift spectroscopy to quantitatively evaluate the tip–sample interaction forces and potentials above individual atoms or molecules. The stiffness of the probe, k, is then required to perform the frequency shift-to-force conversion. However, this quantity is generally known with

• possible to quantify the interatomic interaction forces that develop between the tip and the surface acquired in spectroscopic data cube modes [7][8] with both high sensitivity and high spatial resolution. Recently, the force sensitivity has been pushed forward, and forces as low as 100 fN have been

• ru(z) = z + A1(1 − cos(u)) is the instantaneous tip–surface position, and z is the shortest distance between the tip and the surface during one oscillation cycle. Thus, if A1 and k1 are properly calibrated, the interaction force may be quantified, however, through non-trivial inversion procedures [13

Directed growth of quinacridone chains on the vicinal Ag(35 1 1) surface

• Niklas Humberg,
• Lukas Grönwoldt and
• Moritz Sokolowski

Beilstein J. Nanotechnol. 2024, 15, 556–568, doi:10.3762/bjnano.15.48

• ), the distance between the chains, b2, depends on the coverage as they repel one another because of a substrate-mediated interaction. The intermolecular distance along the chains is b1 = 6.6 ± 0.2 Å, and is, within the margins of error, identical to the distance on Ag(100) [23] (see Figure 1). The