The impact of tris(pentafluorophenyl)borane hole transport layer doping on interfacial charge extraction and recombination

• Konstantinos Bidinakis and
• Stefan A. L. Weber

Beilstein J. Nanotechnol. 2025, 16, 678–689, doi:10.3762/bjnano.16.52

• 0.14 mbar and 280 W). Consequently, we deposited a compact layer of TiO2 via an aqueous 0.75 M TiCl4 solution (Sigma-Aldrich, 99.99% trace metal basis). A volume of 80 μL of the solution was spin-coated at 5000 rpm for 30 s, and the resulting films were annealed at 500 °C for 30 min. Afterwards, we

• deposited a mesoporous TiO2 layer from a (transparent) titania paste solution (Aldrich, 16.67 wt % in ethanol) via spin coating and annealed it (same parameters as in the previous step). After each of these titania deposition steps, we subjected the films to a UV-ozone cleaning step (FHR UVO 150) for 30 min

Colloidal few layered graphene–tannic acid preserves the biocompatibility of periodontal ligament cells

• Teissir Ben Ammar,
• Naji Kharouf,
• Dominique Vautier,
• Housseinou Ba,
• Nivedita Sudheer,
• Philippe Lavalle and
• Vincent Ball

Beilstein J. Nanotechnol. 2025, 16, 664–677, doi:10.3762/bjnano.16.51

• amount of 100 µg) in the filtrate (Figure S3B, Supporting Information File 1). The DPPH scavenging assay reveals differences in TA antioxidant behavior. Free TA molecules in FLG suspension eliminated approximately 90% of free radicals, while FLG–TA films deposited on gold scavenged only 15% of the

Polyurethane/silk fibroin-based electrospun membranes for wound healing and skin substitute applications

• Iqra Zainab,
• Zohra Naseem,
• Syeda Rubab Batool,
• Muhammad Waqas,
• Ahsan Nazir and
• Muhammad Anwaar Nazeer

Beilstein J. Nanotechnol. 2025, 16, 591–612, doi:10.3762/bjnano.16.46

• dermal matrix [85]. In vitro studies showed that the use of electrospun silk nanofibers favors the attachment of human fibroblasts, keratinocytes, and deposition of collagen type I [86]. Silk can be processed into hydrogels, scaffolds, and films with the incorporation of bioactive factors such as growth

• functionalization of SF facilitate its usage in optics as a biosensor and implantable device [92]. Malinowski et al. showed that conventional transparent films often lack adequate haze, but SF films exhibit ultrahigh optical transparency (>93%) and transmission haze (>65%). In this study, soft lithography was used

• to create and analyze SF films with various nanostructures that exhibit tunable optical properties depending on the structure. When combined with silicon photodiodes, the power conversion efficiency increased by 6.96% with flat SF films and 14.9% with nanopatterned SF films. This demonstrates the

Retrieval of B1 phase from high-pressure B2 phase for CdO nanoparticles by electronic excitations in Cd_xZn_1−xO composite thin films

• Arkaprava Das,
• Marcin Zając and
• Carla Bittencourt

Beilstein J. Nanotechnol. 2025, 16, 551–560, doi:10.3762/bjnano.16.43

• Abstract This study investigates the recovery of the B1 phase from the high-pressure B2 phase, at atmospheric pressure, in cadmium oxide (CdO) nanoparticles incorporated within sol–gel synthesized CdxZn1−xO (x = 0.40) composite thin films. The recovery process is investigated using electronic excitations

• ; Introduction Zinc oxide (ZnO)-based thin films are of significant interest due to their wide bandgap value (3.37 eV at room temperature), transparent electrical conduction, and large excitonic binding energy (60 meV) [1]. In contrast, cadmium oxide (CdO) exhibits a lower bandgap of 2.2 eV, along with high

• electron mobility (>100 cm2/V/s) and high electrical conductivity (>1014 S/cm), demonstrating its potential for optoelectronic applications [2][3][4]. The incorporation of cadmium into ZnO effectively reduces the bandgap, rendering the thin films suitable for applications in the visible region of the

N₂⁺-implantation-induced tailoring of structural, morphological, optical, and electrical characteristics of sputtered molybdenum thin films

• Usha Rani,
• Kafi Devi,
• Divya Gupta and
• Sanjeev Aggarwal

Beilstein J. Nanotechnol. 2025, 16, 495–509, doi:10.3762/bjnano.16.38

• Usha Rani Kafi Devi Divya Gupta Sanjeev Aggarwal Ion Beam Centre, Department of Physics, Kurukshetra University, Kurukshetra-136119, India 10.3762/bjnano.16.38 Abstract Molybdenum (Mo) thin films have extensive applications in energy storage devices and photovoltaic solar cells because of their

• remarkable thermal stability, high melting point, and chemical inertness. In the present study, Mo thin films of different thicknesses (150, 200, 250, and 300 nm) have been deposited on Si(100) substrates via radio frequency sputtering in an argon atmosphere at room temperature. Some of these films have been

• implanted with 1 × 1017 N2+·cm−2 at 30 keV using a current density of 4 µA·cm−2. Surface morphology and structural, optical, and electrical properties of the as-deposited and implanted Mo thin films have been systematically investigated. The crystallinity of Mo thin films is enhanced with increasing

Impact of adsorbate–substrate interaction on nanostructured thin films growth during low-pressure condensation

• Alina V. Dvornichenko,
• Vasyl O. Kharchenko and
• Dmitrii O. Kharchenko

Beilstein J. Nanotechnol. 2025, 16, 473–483, doi:10.3762/bjnano.16.36

• elastic adsorbate–substrate interactions in processes of nanostructuring of thin films during low-pressure condensation in the framework of theoretical approaches and numerical simulations. It will be shown that an increase in the elastic interaction strength induces first-order transitions and pattern

• multicomponent substrates leads to the formation of a stationary surface morphology with an elevated number of adsorbate islands of smaller size, compared to one-component substrates. This study provides a deep insight into the peculiarities of nanostructured thin films’ growth in low-pressure systems with

• different adsorbate–substrate bonding. Keywords: adsorbate–substrate interaction; adsorptive systems; numerical simulations; pattern formation; Introduction Innovative nanostructured thin films are widely exploited in ground-breaking developments regarding transistors [1][2], energy harvesting [3][4

Synthetic-polymer-assisted antisense oligonucleotide delivery: targeted approaches for precision disease treatment

• Ana Cubillo Alvarez,
• Dylan Maguire and
• Ruairí P. Brannigan

Beilstein J. Nanotechnol. 2025, 16, 435–463, doi:10.3762/bjnano.16.34

Size control of nanoparticles synthesized by pulsed laser ablation in liquids using donut-shaped beams

• Abdel Rahman Altakroury,
• Oleksandr Gatsa,
• Farbod Riahi,
• Zongwen Fu,
• Miroslava Flimelová,
• Andrei Samokhvalov,
• Stephan Barcikowski,
• Carlos Doñate-Buendía,
• Alexander V. Bulgakov and
• Bilal Gökce

Beilstein J. Nanotechnol. 2025, 16, 407–417, doi:10.3762/bjnano.16.31

• . In contrast, ablation with a Gaussian beam results in the ejection of molten droplets from the overheated central region and the formation of a crater rim. For instance, it has been demonstrated that during vortex-beam ultrashort laser ablation of thin metal films [55] and tungsten targets in air [56

Tailoring of physical properties of RF-sputtered ZnTe films: role of substrate temperature

• Kafi Devi,
• Usha Rani,
• Arun Kumar,
• Divya Gupta and
• Sanjeev Aggarwal

Beilstein J. Nanotechnol. 2025, 16, 333–348, doi:10.3762/bjnano.16.25

• Kafi Devi Usha Rani Arun Kumar Divya Gupta Sanjeev Aggarwal Ion Beam Centre, Department of Physics, Kurukshetra University, Kurukshetra-136119, India 10.3762/bjnano.16.25 Abstract In this study, zinc telluride (ZnTe) films were grown on quartz substrates at room temperature, 300 °C, 400 °C, 500

• °C, and 600 °C using RF sputtering. The thickness of the films has been found to decrease from 940 nm at room temperature to 200 nm at 600 °C with increasing substrate temperature. The structural investigation using grazing incidence angle X-ray diffraction revealed that films deposited at room

• leads to a reduction in microstrain and dislocation density. The optical studies using UV–vis–NIR spectroscopy reveal that the transmittance of films increases with substrate temperature. Further, the shift in transmittance threshold towards lower wavelengths with substrate temperature indicates that

Enhancing mechanical properties of chitosan/PVA electrospun nanofibers: a comprehensive review

• Nur Areisman Mohd Salleh,
• Amalina Muhammad Afifi,
• Fathiah Mohamed Zuki and
• Hanna Sofia SalehHudin

Beilstein J. Nanotechnol. 2025, 16, 286–307, doi:10.3762/bjnano.16.22

• , following appropriate testing standards such as EN ISO 13934-1:1999 for the strip method [131]. A UTM applies a controlled force to a nanofiber sample and measures the force and the corresponding deformation. Nanofibers are typically collected in the form of mats or films, which are cut into small strips

• layers. Rafieian et al. [109] incorporated PVA nanofibers onto chitosan/aloe vera films to improve the mechanical, physical, and biological properties of the films for wound dressing applications. Kim et al. [159] compared the mechanical properties of pure PVA, blended chitosan/PVA, and PVA core–chitosan

Correction: AFM-IR investigation of thin PECVD SiO_x films on a polypropylene substrate in the surface-sensitive mode

• Hendrik Müller,
• Hartmut Stadler,
• Teresa de los Arcos,
• Adrian Keller and
• Guido Grundmeier

Beilstein J. Nanotechnol. 2025, 16, 252–253, doi:10.3762/bjnano.16.19

• /bjnano.16.19 Keywords: AFM-IR; polypropylene; surface-sensitive mode; silicon oxide; thin films; XPS; The authors regret that the acknowledgement in the publication is unfortunately not complete. The following sentence in the Funding section is missing: This work was supported by the German Research

Recent advances in photothermal nanomaterials for ophthalmic applications

• Jiayuan Zhuang,
• Linhui Jia,
• Chenghao Li,
• Rui Yang,
• Jiapeng Wang,
• Wen-an Wang,
• Heng Zhou and
• Xiangxia Luo

Beilstein J. Nanotechnol. 2025, 16, 195–215, doi:10.3762/bjnano.16.16

• damage to surrounding tissues due to inadequate control over the heat distribution [100][101][102][103][104][105]. Innovations in this field have led to the development of transparent polylactic acid (PLA) thin films with embedded iron oxide nanoclusters prepared via spin coating [51]. The efficient

• photothermal conversion of iron oxide minimizes the necessary laser energy. The mechanical force generated by laser-induced VNBs enables the selective destruction of single corneal cells. The PLA films aid in precisely positioning the photothermal therapy, restrain the dispersion of iron oxide nanoclusters

• , and can be easily removed post-laser treatment. The spatially selective single-cell killing capability of iron oxide PLA bubble films has great potential for ocular tumor therapy. However, clinical treatment of tumors requires the application of films on surfaces with “odd” tissues. Using a

Comparison of organic and inorganic hole transport layers in double perovskite material-based solar cell

• Deepika K and
• Arjun Singh

Beilstein J. Nanotechnol. 2025, 16, 119–127, doi:10.3762/bjnano.16.11

• transported to ETL and HTL, respectively, without recombining [7]. Ozturk et al. [8] addressed the role of a passivation agent at grain boundaries and the surface of perovskite films, namely, quinary kesterite nanocrystals Cu2NiSn(S,Se)4 (CNTSSe) obtained through a facile hot-casting method. Through

Advanced atomic force microscopy techniques V

• Philipp Rahe,
• Ilko Bald,
• Nadine Hauptmann,
• Regina Hoffmann-Vogel,
• Harry Mönig and
• Michael Reichling

Beilstein J. Nanotechnol. 2025, 16, 54–56, doi:10.3762/bjnano.16.6

• al. present the application of AFM-based infrared nanospectroscopy to coated polymer surfaces [11]. The authors prepare thin films of SiOx on polypropylene surfaces by plasma-enhanced chemical vapor deposition (PE-CVD), which is commonly done to improve gas barrier properties of polypropylene. They

• characterize SiOx films as thin as 5 nm by the so-called surface-sensitive mode, in contrast to the established contact mode, which provides much less surface sensitivity. A particular strength for the study of materials is the combination of different measurement modes. Rothe et al. extend the

Bioinspired nanofilament coatings for scale reduction on steel

• Siad Dahir Ali,
• Mette Heidemann Rasmussen,
• Jacopo Catalano,
• Christian Husum Frederiksen and
• Tobias Weidner

Beilstein J. Nanotechnol. 2025, 16, 25–34, doi:10.3762/bjnano.16.3

• only 4.0 ± 1.5 mg. This corresponds to a scale reduction of 75.5% by the SNF coating. Ostensibly, the non-wetting properties of the SNF films prevent attachment and growth of scale. Calcium carbonate scale formation starts with crystallization nuclei, small clusters of ions which can homogeneously form

Orientation-dependent photonic bandgaps in gold-dust weevil scales and their titania bioreplicates

• Norma Salvadores Farran,
• Limin Wang,
• Primoz Pirih and
• Bodo D. Wilts

Beilstein J. Nanotechnol. 2025, 16, 1–10, doi:10.3762/bjnano.16.1

• of 1.55 to 2.00. The study suggests that the effective refractive index of titania in the 3D lattice is similar to that in sol–gel films. The study demonstrates the potential of replicating complex biophotonic structures using the sol–gel technique. Optimization of the sol–gel process could lead to

• templating process employed here, the 3D geometry did not significantly increase the porosity of titania. Our estimate for the effective refractive index of titania in the 3D lattice is in the range reported for pure titania thin films (1.95–2.55 [38], 1.72–2.03 [39]), hybrid silica/titania thin films (1.95

• the effective refractive index of titania thin films produced by sol–gel synthesis varies because of porosity, depending on the specific process, chemicals, and reaction conditions [41]. A higher annealing temperature seems to have a large influence on reducing the porosity of thin films, while

Heterogeneous reactions in a HFCVD reactor: simulation using a 2D model

• Xochitl Aleyda Morán Martínez,
• José Alberto Luna López,
• Zaira Jocelyn Hernández Simón,
• Gabriel Omar Mendoza Conde,
• José Álvaro David Hernández de Luz and
• Godofredo García Salgado

Beilstein J. Nanotechnol. 2024, 15, 1627–1638, doi:10.3762/bjnano.15.128

• for the subsequent growth of the SiOx films. These SiOx films have interesting properties and embedded nanostructures, which make them excellent dielectric, optoelectronic, and electroacoustic materials for the fabrication of devices compatible with silicon-based technology. Keywords: 2D model

• ; chemical reactions; flow dynamics; HFCVD; hot filament chemical vapor deposition; SiOx films; Introduction The growth of materials such as non-stoichiometric silicon oxide (SiOx) is an important step in semiconductor devices development. Control of deposition parameters determines the success of the

• process and the properties of the films, with the most important parameters being substrate temperature, gas pressure, species concentration, and flow velocity [1]. The structural, optical, and electrical properties of the SiOx, more generally known as silicon-rich oxide (SRO), films are determined by the

Ion-induced surface reactions and deposition from Pt(CO)₂Cl₂ and Pt(CO)₂Br₂

• Mohammed K. Abdel-Rahman,
• Patrick M. Eckhert,
• Atul Chaudhary,
• Johnathon M. Johnson,
• Jo-Chi Yu,
• Lisa McElwee-White and
• D. Howard Fairbrother

Beilstein J. Nanotechnol. 2024, 15, 1427–1439, doi:10.3762/bjnano.15.115

• under steady-state conditions. X-ray photoelectron spectroscopy (XPS) and mass spectrometry data from monolayer thick films of Pt(CO)2Cl2 and Pt(CO)2Br2 exposed to 3 keV Ar+, He+, and H2+ ions indicate that deposition is initiated by the desorption of both CO ligands, a process ascribed to momentum

• elementary reaction steps is invariant, although the rates of CO desorption and subsequent physical sputtering were greatest for the heaviest (Ar+) ions. The ability of IBID to produce pure Pt films was confirmed by AES and XPS analysis of thin film deposits created by Ar+/Pt(CO)2Cl2, demonstrating the

• after prolonged electron irradiation by means of electron-stimulated desorption and only if the films were sufficiently (nanometer scale) thin. In contrast, under high-vacuum conditions found in scanning electron microscopes, the deposits were halogen-free but contained carbon contamination [57]. These

Lithium niobate on insulator: an emerging nanophotonic crystal for optimized light control

• Midhun Murali,
• Amit Banerjee and
• Tanmoy Basu

Beilstein J. Nanotechnol. 2024, 15, 1415–1426, doi:10.3762/bjnano.15.114

• with SiO2. The ion-slicing method has enabled the production of large-scale, high-quality, and submicron-thick crystalline LN films. First, a lithium niobate wafer undergoes ion implantation, typically using hydrogen or helium ions, to create a weakened layer at a controlled depth [30]. After the

• conversion of absorbed light into electricity [43]. The carrier diffusion length within PbS CQD solar cells aligns closely with the thickness of the CQD films. This correlation introduces a tradeoff between light absorption and charge transport. As the thickness of the CQD film increases to enhance light

Investigation of Hf/Ti bilayers for the development of transition-edge sensor microcalorimeters

• Victoria Y. Safonova,
• Anna V. Gordeeva,
• Anton V. Blagodatkin,
• Dmitry A. Pimanov,
• Anton A. Yablokov and
• Andrey L. Pankratov

Beilstein J. Nanotechnol. 2024, 15, 1353–1361, doi:10.3762/bjnano.15.108

• Academy of Sciences, Akademicheskaya Street, 7, Nizhny Novgorod, Russia, 603950, Russia 10.3762/bjnano.15.108 Abstract The superconducting properties of 85 nm thick hafnium thin films with a 5 nm thick titanium layer on top have been investigated for three different geometries, that is, a film covering

• is possible to fabricate microcalorimeters with δE less than 1 eV using these films. Keywords: hafnium; microcalorimeter; neutrino; superconducting transition width; superconductivity; TES; Introduction Over the last two decades, cryogenic microcalorimeters have found applications in various fields

• ongoing, and the choice of a superconductor material plays an important role here [6][7]. An increase in sensitivity can be achieved by lowering the critical temperature TC below 100 mK. A known solution is two- or multilayer films of various superconductors and normal metals to suppress the transition

Mn-doped ZnO nanopowders prepared by sol–gel and microwave-assisted sol–gel methods and their photocatalytic properties

• Cristina Maria Vlăduț,
• Crina Anastasescu,
• Silviu Preda,
• Oana Catalina Mocioiu,
• Simona Petrescu,
• Jeanina Pandele-Cusu,
• Dana Culita,
• Veronica Bratan,
• Ioan Balint and
• Maria Zaharescu

Beilstein J. Nanotechnol. 2024, 15, 1283–1296, doi:10.3762/bjnano.15.104

• -efficient than conventional heating methods [12][13][14]. This approach is particularly advantageous in technology applications, as it significantly reduces reaction times from days to mere hours or minutes and enables the production of nanocrystalline oxides in the form of powders and films on various

• of amorphous oxide nanopowders, the precipitation of nanocrystalline metal oxides, and the drying and thermal treatment of oxide films [23]. However, there has been comparatively less focus on studying chemical reactions in sol–gel solutions under microwave irradiation [24][25][26][27]. Numerous

• previous studies, the authors demonstrated that Mn-doped ZnO films exhibit superior optical and piezoelectric properties compared to undoped ZnO, with a more compact microstructure and reduced surface roughness [41]. Building on this foundation, the current article aims to focus on the methods of

New design of operational MEMS bridges for measurements of properties of FEBID-based nanostructures

• Bartosz Pruchnik,
• Krzysztof Kwoka,
• Ewelina Gacka,
• Dominik Badura,
• Piotr Kunicki,
• Andrzej Sierakowski,
• Paweł Janus,
• Tomasz Piasecki and
• Teodor Gotszalk

Beilstein J. Nanotechnol. 2024, 15, 1273–1282, doi:10.3762/bjnano.15.103

• stresses in thin films by deflecting a cantilever of defined size from a uniform membrane. We see a need for such experiments for future improvement of our proposed RoI spacing tuning method. The proposed approach allowed us to evaluate the leakage currents separately from the nanodevice properties. It was

The role of a tantalum interlayer in enhancing the properties of Fe₃O₄ thin films

• Hai Dang Ngo,
• Vo Doan Thanh Truong,
• Van Qui Le,
• Hoai Phuong Pham and
• Thi Kim Hang Pham

Beilstein J. Nanotechnol. 2024, 15, 1253–1259, doi:10.3762/bjnano.15.101

• promising applications. High-quality Fe3O4 thin films are a must to achieve the goals. In this report, Fe3O4 films on different substrates (SiO2/Si(100), MgO(100), and MgO/Ta/SiO2/Si(100)) were fabricated at room temperature with radio-frequency (RF) sputtering and annealed at 450 °C for 2 h. The

• . More importantly, changes in grain size and structure due to the effect of the MgO/Ta buffering layers have a strong impact on saturation magnetization and coercivity of Fe3O4 thin films compared to cases of no or just a single buffering layer. Keywords: buffer layer; Fe3O4; magnetite; RF magnetron

• K [1], as well as its high spin polarization with only one spin at the Fermi level, even at room temperature [2][3][4][5][6]. Fe3O4 thin films are an issue of interest and have extensive applications in Li-ion batteries, spin Seebeck devices, supercapacitors, spin Hall magnetoresistance, and the

A low-kiloelectronvolt focused ion beam strategy for processing low-thermal-conductance materials with nanoampere currents

• Annalena Wolff,
• Nico Klingner,
• William Thompson,
• Yinghong Zhou,
• Jinying Lin and
• Yin Xiao

Beilstein J. Nanotechnol. 2024, 15, 1197–1207, doi:10.3762/bjnano.15.97

• different ion species, which are becoming more popular now, especially the lighter ion species where the assumption of a flat disc may not hold. Allen et al. showed that He ions can be beneficial when working with thin films [28] as they mostly transmit through the sample. The ion beam-induced heat for

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

• tools is extremely essential and important [37][38][39]. Herein, we constructed a robust p–n junction catalyst by atomic layer deposition (ALD) of TiO2 thin films on a p-type SiNW substrate for enhancing the photocatalytic efficiency in CH4 oxidation. Pristine p-Si wafers have limited surface area and

• properties of as-synthesized samples were analyzed using an X-ray diffraction system (XRD, Rigaku, SmartLab) with a 2θ range of 20–80° and a field-emission scanning electron microscope (FE-SEM, Hitachi, S-4700). The absorption properties of the thin films were analyzed using a diffuse reflectance UV–vis