The systemic effect of PEG-nGO-induced oxidative stress in vivo in a rodent model

• Qura Tul Ain,
• Samina Hyder Haq,
• Abeer Alshammari,
• Moudhi Abdullah Al-Mutlaq and
• Muhammad Naeem Anjum

Beilstein J. Nanotechnol. 2019, 10, 901–911, doi:10.3762/bjnano.10.91

• acid (TCA) in a glass tube covered by aluminum foil. Then, 0.5 mL of an enzyme (diluted tissue homogenate) was added to the mixture and kept in a water bath at 100 °C for 30 min. Afterward, the mixture was allowed to cool at room temperature and was centrifuged at 1000g for 10 min. The absorbance was

An iridescent film of porous anodic aluminum oxide with alternatingly electrodeposited Cu and SiO₂ nanoparticles

• Menglei Chang,
• Huawen Hu,
• Haiyan Quan,
• Hongyang Wei,
• Zhangyi Xiong,
• Jiacong Lu,
• Pin Luo,
• Yaoheng Liang,
• Jianzhen Ou and
• Dongchu Chen

Beilstein J. Nanotechnol. 2019, 10, 735–745, doi:10.3762/bjnano.10.73

• , Melbourne, VIC, Australia 10.3762/bjnano.10.73 Abstract The structurally colored surface of anodic aluminum oxide (AAO) is highly useful for decoration and anti-counterfeiting applications, which are of significance for both scientific and industrial communities. This study presents the first demonstration

• of the fabrication of an iridescent film of porous AAO on an industrial aluminum alloy substrate, with alternatingly electrodeposited Cu and SiO2 nanoparticles (NPs). A rainbow effect was effectively obtained for the optimized sample with appropriate alternating electrodeposition times. The structure

• film that exhibited a rainbow effect and superior anti-corrosion performance. Keywords: aluminum alloys; anodic aluminum oxidation; interference-enabled color production; rainbow effect; structural color; Introduction Due to the low cost, high mechanical strength and ductility, and well-developed

Choosing a substrate for the ion irradiation of two-dimensional materials

• Egor A. Kolesov

Beilstein J. Nanotechnol. 2019, 10, 531–539, doi:10.3762/bjnano.10.54

• . In a similar case of Al2O3 irradiation with carbon ions, components at ≈2.5 × 101 keV and ≈1 × 102 keV show maximum participation of sputtered oxygen and aluminum, respectively. The “unsplit” curves for compound targets indicate that for a given pair of components, the yield-energy product maxima

Nanoporous water oxidation electrodes with a low loading of laser-deposited Ru/C exhibit enhanced corrosion stability

• Sandra Haschke,
• Dmitrii Pankin,
• Vladimir Mikhailovskii,
• Maïssa K. S. Barr,
• Adriana Both-Engel,
• Alina Manshina and
• Julien Bachmann

Beilstein J. Nanotechnol. 2019, 10, 157–167, doi:10.3762/bjnano.10.15

• cover glasses (borosilicate glass, 18 × 18 mm2, 0.13–0.16 mm thickness) were purchased from Marienfeld-Superior. Aluminum plates (99.99%) for the anodization procedure were supplied by Smart-Membranes. The indium tin oxide sputter target (99.99%) was purchased from AEM. Preparation of planar samples For

• isopropanol. Preparation of nanostructured samples Nanostructured Ru/C electrodes were prepared in several steps as illustrated in Figure 5. A standard two-step anodization of aluminum (represented as (a) in Figure 5) delivered the nanoporous aluminum oxide membranes further used as templates [35]. Aluminum

• plate connected to a closed-circuit cooler by Haake. The PVC beaker was filled with the electrolyte and closed with a lid equipped with a mechanical stirrer and silver wire mesh as counter-electrode. The whole setup was thermally insulated laterally. Electropolishing of the aluminum plates in a cooled

Scanning probe microscopy for energy-related materials

• Rüdiger Berger,
• Benjamin Grévin,
• Philippe Leclère and
• Yi Zhang

Beilstein J. Nanotechnol. 2019, 10, 132–134, doi:10.3762/bjnano.10.12

• relationship between Li-ion conductivity and the microstructure of the solid-state electrolyte lithium aluminum titanium phosphate films [10]. Furthermore, dielectric properties play a role for the storage of electrochemical energy. Ying Wang and co-workers report on a novel method for the characterization of

New micro/mesoporous nanocomposite material from low-cost sources for the efficient removal of aromatic and pathogenic pollutants from water

• Emmanuel I. Unuabonah,
• Robert Nöske,
• Jens Weber,
• Christina Günter and
• Andreas Taubert

Beilstein J. Nanotechnol. 2019, 10, 119–131, doi:10.3762/bjnano.10.11

• referenced to a 0.5 M aqueous solution of aluminum nitrate. 13C and 29Si signals were referenced to tetramethylsilane (TMS). Other analysis Thermogravimetric /differential thermal analysis was performed on a Netzsch STA 449F3 from 25 to 1000 °C at 5 °C/min under N2. The point of zero charge (pHpzc) analysis

• , characteristic of tetrahedrally (T) and octahedrally (O) coordinated aluminum centers, respectively, in metakaolin [39][40]. The T/O ratio suggests that the fraction of T-coordinated Al is almost twice that of O-coordinated Al. A broader resonance with low intensity is observed at ≈−68 ppm, perhaps resulting

A comparison of tarsal morphology and traction force in the two burying beetles Nicrophorus nepalensis and Nicrophorus vespilloides (Coleoptera, Silphidae)

• Liesa Schnee,
• Benjamin Sampalla,
• Josef K. Müller and
• Oliver Betz

Beilstein J. Nanotechnol. 2019, 10, 47–61, doi:10.3762/bjnano.10.5

• resolution of 30 nN. Friction forces were detected by two independent high-resolution capacitive sensors, whereas a piezo actuator provided smooth and steady motion at a slow pace. The actual measuring head consisted of a metal pin, which had an aluminum oxide (Al2O3) surface at its tip (6.3 mm2). All

Zn/F-doped tin oxide nanoparticles synthesized by laser pyrolysis: structural and optical properties

• Florian Dumitrache,
• Iuliana P. Morjan,
• Elena Dutu,
• Ion Morjan,
• Claudiu Teodor Fleaca,
• Monica Scarisoreanu,
• Alina Ilie,
• Marius Dumitru,
• Cristian Mihailescu,
• Adriana Smarandache and
• Gabriel Prodan

Beilstein J. Nanotechnol. 2019, 10, 9–21, doi:10.3762/bjnano.10.2

• .) antimony by spray pyrolysis [9] or by sol–gel methods followed by spin-coating and annealing in different environments [10], ii.) manganese by long-time annealing of Mn/SnO2 bilayers in air at 200 °C [11] or by co-precipitation [12], iii.) aluminum, copper or indium all by spray pyrolysis from ethanolic

• of the simultaneous doping with both cations and anions. In the case of a high aluminum and lower sulfur co-doped film made by spray pyrolysis at 480 °C, the transparency increased and the grain size was significantly reduced for the optimal composition [22]. This approach benefits from the reduction

A novel polyhedral oligomeric silsesquioxane-modified layered double hydroxide: preparation, characterization and properties

• Xianwei Zhang,
• Zhongzhu Ma,
• Hong Fan,
• Carla Bittencourt,
• Jintao Wan and
• Philippe Dubois

Beilstein J. Nanotechnol. 2018, 9, 3053–3068, doi:10.3762/bjnano.9.284

• , chloroform, formic acid, magnesium(II) nitrate hexahydrate (Mg(NO3)2·6H2O), aluminum(III) nitrate nonahydrate (Al(NO3)3·9H2O), sodium hydroxide (NaOH), tetrahydrofuran (THF) and concentrated hydrochloric acid (36.0–38.0 wt %) were obtained from Sinopharm Chemical Reagent Co., Ltd (Shanghai, China). Ultrapure

Femtosecond laser-assisted fabrication of chalcopyrite micro-concentrator photovoltaics

• Franziska Ringleb,
• Stefan Andree,
• Berit Heidmann,
• Jörn Bonse,
• Katharina Eylers,
• Owen Ernst,
• Torsten Boeck,
• Martina Schmid and
• Jörg Krüger

Beilstein J. Nanotechnol. 2018, 9, 3025–3038, doi:10.3762/bjnano.9.281

• state of the art. The electric back contact (molybdenum) covered with the highly-efficient light-absorber (CIGSe) on top is deposited on a carrier material (glass). A buffer layer (CdS), a window layer consisting of an intrinsic ZnO layer (ZnO) and an aluminum-doped ZnO layer (Al:ZnO) as transparent

Electrostatic force microscopy for the accurate characterization of interphases in nanocomposites

• Diana El Khoury,
• Richard Arinero,
• Jean-Charles Laurentie,
• Mikhaël Bechelany,
• Michel Ramonda and
• Jérôme Castellon

Beilstein J. Nanotechnol. 2018, 9, 2999–3012, doi:10.3762/bjnano.9.279

• nm) were deposited or grown over the whole sample surface. Aluminum oxide (Al2O3) shells were prepared using the atomic layer deposition (ALD) method, polyvinyl acetate (PVAc) shells by spin coating, and silicon dioxide (SiO2) shells by plasma sputtering deposition (PSD). The signature of each

Controlling surface morphology and sensitivity of granular and porous silver films for surface-enhanced Raman scattering, SERS

• Sherif Okeil and
• Jörg J. Schneider

Beilstein J. Nanotechnol. 2018, 9, 2813–2831, doi:10.3762/bjnano.9.263

• ], anisotropically etched single-crystal silicon [47], plasma-treated plastic [48] and anodic aluminum oxide films [49][50][51][52]. Some methods aim at the fabrication of three -dimensional silver or gold structures, such as oblique-angle vapor deposition used for the fabrication of silver nanorod arrays [53][54

Near-infrared light harvesting of upconverting NaYF₄:Yb³⁺/Er³⁺-based amorphous silicon solar cells investigated by an optical filter

• Daiming Liu,
• Qingkang Wang and
• Qing Wang

Beilstein J. Nanotechnol. 2018, 9, 2788–2793, doi:10.3762/bjnano.9.260

• prepared (Figure 3a). One a-Si:H layer of ca. 350 nm is sandwiched between two aluminum-doped zinc oxide (AZO) contacts. The thickness of the AZO contacts is approximately 1.5 μm. From Figure 3b, the photoelectric conversion efficiency of the a-Si:H solar cell is calculated to be 6.68% at the maximum power

Silencing the second harmonic generation from plasmonic nanodimers: A comprehensive discussion

• Jérémy Butet,
• Gabriel D. Bernasconi and
• Olivier J. F. Martin

Beilstein J. Nanotechnol. 2018, 9, 2674–2683, doi:10.3762/bjnano.9.250

• straightforward and nonlinear plasmonic nanorulers need to be carefully calibrated [48]. Finally, it would be interesting to extend the present study to aluminum nanoantennas, since a significant bulk quadrupolar SHG is expected in this case [49]. (a) Example of one mesh used for the simulations. The nanorod

Enhancement of X-ray emission from nanocolloidal gold suspensions under double-pulse excitation

• Wei-Hung Hsu,
• Frances Camille P. Masim,
• Armandas Balčytis,
• Hsin-Hui Huang,
• Tetsu Yonezawa,
• Aleksandr A. Kuchmizhak,
• Saulius Juodkazis and
• Koji Hatanaka

Beilstein J. Nanotechnol. 2018, 9, 2609–2617, doi:10.3762/bjnano.9.242

• of silver [21] or aluminum [22] could be also considered. However, experimental approaches have been limited to flat samples [23] so far. Gold, with the higher atomic number and a high stability even in aqueous environments, should be considered a main target for fs-laser-induced X-ray experiments

Effect of electrospinning process variables on the size of polymer fibers and bead-on-string structures established with a 2³ factorial design

• Paulina Korycka,
• Adam Mirek,
• Katarzyna Kramek-Romanowska,
• Marcin Grzeczkowicz and
• Dorota Lewińska

Beilstein J. Nanotechnol. 2018, 9, 2466–2478, doi:10.3762/bjnano.9.231

• mm (Figure 1). A round aluminum collector (thickness: 0.12 mm; diameter: 40 mm) was located about 15 cm below the metal nozzle. The high voltage was set within the limits of 7.5–15 kV and the flow rate of the solution in the range of 0.6–1.2 mL/h. The collection time of the fiber was adjusted to

Surface energy of nanoparticles – influence of particle size and structure

• Dieter Vollath,
• Franz Dieter Fischer and
• David Holec

Beilstein J. Nanotechnol. 2018, 9, 2265–2276, doi:10.3762/bjnano.9.211

• applicability of the Pawlow-relationship over a wide range of particle sizes, as shown in Figure 1, is a strong indicator that the surface energy of gold particles is, down to a particle diameter, d of ≈2 nm, largely independent of the particle size. Other experimental results on aluminum [15] and lead [16

• interesting to note that after the correction, the dependence of the surface energy on the diameter is more or less in the range of the dataset as a whole. This result is somewhat similar to that obtained for gold as displayed in Figure 13. The results for aluminum particles displayed in Figure 17 obtained by

• original values and those corrected according to Holec et al. [53]. Except the systematic variation in the values for particles with sizes below ca. 2 nm, it is remarkable that there is only a relatively small influence of the particle diameter on the surface energy. Surface energy of aluminum particles as

The role of adatoms in chloride-activated colloidal silver nanoparticles for surface-enhanced Raman scattering enhancement

• Nicolae Leopold,
• Andrei Stefancu,
• Krisztian Herman,
• István Sz. Tódor,
• Stefania D. Iancu,
• Vlad Moisoiu and
• Loredana F. Leopold

Beilstein J. Nanotechnol. 2018, 9, 2236–2247, doi:10.3762/bjnano.9.208

• total of 15 min and afterwards stored in the dark for 24 h. A slightly faster synthesis was observed when covering the beaker in aluminum foil, due to the local increase in light intensity. Also, we observed that a LED bulb with a “cool light” emission spectrum led to a faster synthesis compared to an

• , equipped with a Nd:YAG frequency-doubled laser emitting at 532 nm and a laser power of ≈60 mW on the sample. For each measurement, 10 μL of the sample was placed on a microscope slide that was covered with aluminum foil. The laser light was focused on the drop using a 5× objective (NA 0.12). The spectra

Localized photodeposition of catalysts using nanophotonic resonances in silicon photocathodes

• Evgenia Kontoleta,
• Sven H. C. Askes,
• Lai-Hung Lai and
• Erik C. Garnett

Beilstein J. Nanotechnol. 2018, 9, 2097–2105, doi:10.3762/bjnano.9.198

• with a double-target sputter coater (Leica EM ACE600). The electrical connections of the sample with the potentiostat (BioLogic Science Instruments, SP-200) were made using conductive aluminum tape (Advance Tapes AT521) adhered to the back metal contact of the sample, which was not in contact with the

Biomimetic and biodegradable cellulose acetate scaffolds loaded with dexamethasone for bone implants

• Aikaterini-Rafailia Tsiapla,
• Varvara Karagkiozaki,
• Veroniki Bakola,
• Foteini Pappa,
• Panagiota Gkertsiou,
• Eleni Pavlidou and
• Stergios Logothetidis

Beilstein J. Nanotechnol. 2018, 9, 1986–1994, doi:10.3762/bjnano.9.189

• is created [23]. Grounded aluminum foils, glass substrates and also coatings for orthopaedic pins were used as collectors to carry out the necessary studies. Drug-release kinetics and degradation study of scaffolds Degradation study was carried out in order to evaluate the mass loss of polymer and

Know your full potential: Quantitative Kelvin probe force microscopy on nanoscale electrical devices

• Amelie Axt,
• Ilka M. Hermes,
• Victor W. Bergmann,
• Niklas Tausendpfund and
• Stefan A. L. Weber

Beilstein J. Nanotechnol. 2018, 9, 1809–1819, doi:10.3762/bjnano.9.172

• measurements. To study the effect of stray fields, aluminum foil was placed under the substrate of the electrode array, where we could apply an external voltage of 200 V. To show that KPFM operates in a linear regime (Equation 19) we recorded bias spectroscopy sweeps prior to every measurement (Figure S1 and

• stray fields causing the offsets, we induced an artificial stray field by placing the substrate on a piece of aluminum foil and applying a voltage of 200 V with respect to the grounded electrode. We then repeated the experiments in the center and at the edge of the electrode structure. The measurement

• presence of the artificial stray field caused by the aluminum electrode underneath the substrate, the measured CPD further increased to up to 4.7 V (AM lift mode, Figure 8). Generally, the offsets in CPD were much higher in the AM-KPFM modes compared to the FM-KPFM modes, where the maximum deviation was

SO₂ gas adsorption on carbon nanomaterials: a comparative study

• Deepu J. Babu,
• Divya Puthusseri,
• Frank G. Kühl,
• Sherif Okeil,
• Michael Bruns,
• Manfred Hampe and
• Jörg J. Schneider

Beilstein J. Nanotechnol. 2018, 9, 1782–1792, doi:10.3762/bjnano.9.169

• vapor deposition [56][57]. The bimetallic catalyst system for the VACNT growth was prepared by depositing a thin layer of aluminum (13–15 nm) over the substrate through thermal evaporation in a vacuum of 10−6 mbar, followed by the sputter deposition of 1.2 nm of an iron catalyst layer. The synthesis was

Uniform cobalt nanoparticles embedded in hexagonal mesoporous nanoplates as a magnetically separable, recyclable adsorbent

• Can Zhao,
• Yuexiao Song,
• Tianyu Xiang,
• Wenxiu Qu,
• Shuo Lou,
• Xiaohong Yin and
• Feng Xin

Beilstein J. Nanotechnol. 2018, 9, 1770–1781, doi:10.3762/bjnano.9.168

• in the carbon layer; and (iv) the obtained hexagonal magnetic mesoporous NPL displays a larger adsorption capacity towards removal of RhB from water than observed in other adsorbents [23][24][25][26][27][28][29][30]. Experimental Materials and chemicals Cobalt chloride hexahydrate, aluminum chloride

Light extraction efficiency enhancement of flip-chip blue light-emitting diodes by anodic aluminum oxide

• Yi-Ru Huang,
• Yao-Ching Chiu,
• Kuan-Chieh Huang,
• Shao-Ying Ting,
• Po-Jui Chiang,
• Chih-Ming Lai,
• Chun-Ping Jen,
• Snow H. Tseng and
• Hsiang-Chen Wang

Beilstein J. Nanotechnol. 2018, 9, 1602–1612, doi:10.3762/bjnano.9.152

• aluminum oxide (AAO) structure with periodic nanopores on the surface of flip-chip blue light-emitting diodes (FC-BLEDs). The nanopores had diameters ranging from 73 to 85 nm and were separated by distances ranging from approximately 10 to 15 nm. The light extraction efficiency enhancement of the FC-BLEDs

• emitter into a surface plasmon mode produced by AAO. Keywords: anodic aluminum oxide; critical angle of total reflection; efficiency enhancement; flip-chip blue light-emitting diode; Introduction Light-emitting diodes (LEDs) are widely used in various fields, such as optical communication and automobile

• enhance the LEE of short-wavelength purple and ultraviolet LEDs by 1.4–2.5 times that of a traditional LED [14]. Ryu et al. adopted anodic aluminum oxide (AAO) to produce a photonic crystal structure at the n-GaN layer of LEDs, and transmission electron microscopy (TEM) images showed that screw

Closed polymer containers based on phenylboronic esters of resorcinarenes

• Tatiana Yu. Sergeeva,
• Rezeda K. Mukhitova,
• Irek R. Nizameev,
• Marsil K. Kadirov,
• Polina D. Klypina,
• Albina Y. Ziganshina and
• Alexander I. Konovalov

Beilstein J. Nanotechnol. 2018, 9, 1594–1601, doi:10.3762/bjnano.9.151

• Netzsch STA 449C Jupiter instrument in argon in the temperature range from 30 to 200 °С. The heating rate was 10 °C·min−1. The samples were placed in aluminum crucibles (non-sealed for the free removal of evolved products and a decrease of the influence of an excessive pressure). UV–vis spectra were