Formation of nanoflowers: Au and Ni silicide cores surrounded by SiO_x branches

• Feitao Li,
• Siyao Wan,
• Dong Wang and
• Peter Schaaf

Beilstein J. Nanotechnol. 2023, 14, 133–140, doi:10.3762/bjnano.14.14

• ][24][25]. Apart from Au, both Ni and Ag can also catalyze the growth of NWs based on the VLS mechanism [26][27][28], and Si NWs have been grown using alloyed AuAg nanoparticles [29]. Au–SiOx nanoflowers have been fabricated by combining the dewetting of Au thin films and the growth of NWs based on the

• instance, alloyed AuAg nanoparticles show a tunable LSPR peak by changing the Au/Ag ratio [30]. Also, through the leaching of the less noble element, such as Ag in AuAg nanoparticles, dealloying can yield porous Au nanosponges with excellent optical properties [31][32][33][34][35]. Thus, it is interesting

Antimicrobial and mechanical properties of functionalized textile by nanoarchitectured photoinduced Ag@polymer coating

• Jessica Plé,
• Marine Dabert,
• Helene Lecoq,
• Sophie Hellé,
• Lydie Ploux and
• Lavinia Balan

Beilstein J. Nanotechnol. 2023, 14, 95–109, doi:10.3762/bjnano.14.11

• electron microscopy (SEM), transmission electron microscopy (TEM), and reflectance measurements to assess the optical properties and the durability of the functionalized textiles. Results and Discussion Photoinduced synthesis of the Ag@polymer coating Specific monomers poly(ethylene glycol) 600 diacrylate

• photosensitive formulation was applied to a cotton textile with an abyko-drive applicator (calibrated bar coater). The resulting smooth sample was then irradiated under UV light (600 mW/cm2) to obtain the final Ag@polymer textile material, with a coating thickness of 100 µm, measured with a Mitutoyo digital

• micrometer. Figure 1 shows images of the as-synthesized samples with and without AgNPs for the PEG600DA polymer and PEG600DA/PETIA copolymer matrixes coated onto cotton fabric. Optical and morphological properties UV–vis spectroscopy was initially carried out on glass-coated Ag@PEG600DA or Ag@PEG600DA/PETIA

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

• detection properties are mostly observed in noble metal nanoparticles [2][9][10]. Allowed by their localized surface plasmon resonance (LSPR) in the visible region, silver and gold are the most used materials for the preparation of SERS substrates [11][12]. Although Ag has a higher surface plasmon

• efficiency compared to that of Au, Ag nanoparticles (NPs) are prone to oxidation. Moreover, they are less thermodynamically stable leading to morphology variation and ultimately to deterioration of their SERS efficiency [13][14]. Besides that, most studies report on the high SERS properties for NPs in

• Discussion Morphology of Ag–Al alloy thin films The deposition of silver–aluminum thin films on silicon was accomplished by magnetron co-sputtering using a silver target and an aluminum target. To allow for a good adhesion between silicon and the alloy thin film, a silver adhesion layer was deposited prior

Frontiers of nanoelectronics: intrinsic Josephson effect and prospects of superconducting spintronics

• Anatolie S. Sidorenko,
• Horst Hahn and
• Vladimir Krasnov

Beilstein J. Nanotechnol. 2023, 14, 79–82, doi:10.3762/bjnano.14.9

• following novelties are presented in the contributed articles of this volume: - Novel promising spintronic elements and materials with controllable switching between stable parallel, orthogonal, and antiparallel arrangements of magnetic moments of the epitaxial PdFe films and PdFe/Ag/PdFe heterostructures

Electrical and optical enhancement of ITO/Mo bilayer thin films via laser annealing

• Abdelbaki Hacini,
• Ahmad Hadi Ali,
• Nurul Nadia Adnan and
• Nafarizal Nayan

Beilstein J. Nanotechnol. 2022, 13, 1589–1595, doi:10.3762/bjnano.13.133

• ] who used ITO/Ag and ITO/Ni bilayers. The figure of merit (FOM) is a quantitative value that can evaluate the performance of the device. From the sheet resistance (Rs) and the optical transmittance (T), the quality of the thin film can be calculated using the FOM relation in Equation 5 [33][34][35]: It

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

• Alfred J. Weymouth Emily Roche Franz J. Giessibl Institute of Experimental and Applied Physics, Department of Physics, University of Regensburg, 93053 Regensburg, Germany 10.3762/bjnano.13.131 Abstract When perylene-3,4,9,10-tetracarboxylic dianhydride (PTCDA) is deposited on the Ag(111) surface

• at submonolayer coverage, it forms islands under which the native Shockley state of the Ag(111) surface can no longer be found. Previous work has shown that this state shifts upwards to form a new interface state starting at 0.6 V above the Fermi level, having properties of a two-dimensional electron

• coverage, lies flat on metal surfaces. Submonolayer coverage of PTCDA on Ag(111) is known to form islands with a herringbone reconstruction [3][4]. These islands are hosts to an interface state that acts like a free-electron gas [5]. This interface state has been observed with two-photon photoelectron

Utilizing the surface potential of a solid electrolyte region as the potential reference in Kelvin probe force microscopy

• Nobuyuki Ishida

Beilstein J. Nanotechnol. 2022, 13, 1558–1563, doi:10.3762/bjnano.13.129

• electrolyte sample was a Li-ion conducting glass ceramic purchased from OHARA Inc. (LICGCTM AG-01) [20]. The size and thickness of the substrate were 25.4 mm × 25.4 mm and 150 μm, respectively. The main crystalline phase was Li1+x+yAlx(Ti,Ge)2−xSiyP3−yO12 [20]. The substrate was cut into pieces of

Photoelectrochemical water oxidation over TiO₂ nanotubes modified with MoS₂ and g-C₃N₄

• Phuong Hoang Nguyen,
• Thi Minh Cao,
• Tho Truong Nguyen,
• Hien Duy Tong and
• Viet Van Pham

Beilstein J. Nanotechnol. 2022, 13, 1541–1550, doi:10.3762/bjnano.13.127

• , the electrode material must be extremely durable and nearly chemically inert to be able to withstand highly acidic or basic environments. Therefore, noble metals such as Pt, Pd, Au and Ag with suitable chemical properties, such as inertness, good resistance against corrosion and good electrical

• electrodes were a Pt counter electrode, a Ag/AgCl 3 M reference electrode, and a MoS2/TNAs or g-C3N4/TNAs working electrode in a 1 M Na2SO4 (pH 7.4) electrolyte solution. The light source used in this study was a 150 W Xe lamp (ABET Instruments) with a calibrated luminous intensity of 100 mW·cm−2 and a UV

A TiO₂@MWCNTs nanocomposite photoanode for solar-driven water splitting

• Anh Quynh Huu Le,
• Ngoc Nhu Thi Nguyen,
• Hai Duy Tran,
• Van-Huy Nguyen and
• Le-Hai Tran

Beilstein J. Nanotechnol. 2022, 13, 1520–1530, doi:10.3762/bjnano.13.125

• irradiation is significantly higher than that prepared by TiO2 (vs Ag/AgCl). The low charge capacity of the TiO2@MWCNTs electrode–electrolyte interface hinders the recombination of the photogenerated electrons and holes, which contributes to the enhancement of the solar-to-hydrogen (STH) conversion efficiency

• performed in 0.1 M KCl solution at a scan rate of 50 mV·s−1 with a three-electrode cell using Ag/AgCl and Pt wire as the reference and counter electrodes, respectively. The prepared TiO2@MWCNTs electrode is used as the working electrode. The measurement is carried out in a lab under 350 ± 10 lux of

In search of cytotoxic selectivity on cancer cells with biogenically synthesized Ag/AgCl nanoparticles

• Mitzi J. Ramírez-Hernández,
• Mario Valera-Zaragoza,
• Omar Viñas-Bravo,
• Ariana A. Huerta-Heredia,
• Miguel A. Peña-Rico,
• Erick A. Juarez-Arellano,
• David Paniagua-Vega,
• Eduardo Ramírez-Vargas and
• Saúl Sánchez-Valdes

Beilstein J. Nanotechnol. 2022, 13, 1505–1519, doi:10.3762/bjnano.13.124

• , Saltillo Coahuila, 25294, México 10.3762/bjnano.13.124 Abstract Green synthesis may be a useful approach to achieve selective cytotoxicity of silver nanoparticles on cancer cells and healthy cells. In this study, the concomitant biosynthesis of silver (Ag)/silver chloride (AgCl) nanoparticles from

• -dispersive X-ray spectroscopy (EDX), and transmission electron microscopy (TEM) techniques were used to characterize nanoparticle development. The breast cancer cell line MCF-7 was used as a test model to study the cytotoxic behavior of Ag/AgCl nanoparticles and, as a counterpart, the nanoparticles were also

• tested on mononuclear cells. Ag/AgCl nanoparticles with spherical and triangular morphology were obtained. The size of the nanoparticles (10–70 nm) and the size distribution depended on the reaction temperature. A dose close to 20 µg/mL of Ag/AgCl nanoparticles considerably decreased the cell viability

Hydroxyapatite–bioglass nanocomposites: Structural, mechanical, and biological aspects

• Olga Shikimaka,
• Mihaela Bivol,
• Bogdan A. Sava,
• Marius Dumitru,
• Christu Tardei,
• Beatrice G. Sbarcea,
• Daria Grabco,
• Constantin Pyrtsac,
• Daria Topal,
• Andrian Prisacaru,
• Vitalie Cobzac and
• Viorel Nacu

Beilstein J. Nanotechnol. 2022, 13, 1490–1504, doi:10.3762/bjnano.13.123

• addition of different dopants to the glass can enhance the osteogenesis (Mg, Sr, Fe, and Zr) or can yield particular properties such as angiogenesis (Cu and Co) and antimicrobial activity (Ag, Zn, Ce, Ga, and Cu). Also, dopants can change the glass solubility [13][15][16][17][18][19]. The presence of the

Rapid and sensitive detection of box turtles using an electrochemical DNA biosensor based on a gold/graphene nanocomposite

• Abu Hashem,
• M. A. Motalib Hossain,
• Ab Rahman Marlinda,
• Mohammad Al Mamun,
• Khanom Simarani and
• Mohd Rafie Johan

Beilstein J. Nanotechnol. 2022, 13, 1458–1472, doi:10.3762/bjnano.13.120

• analysed with a Metrohm autolab potentiostat/galvanostat utilising the NOVA 2.1.4 software. The modified SPCE was electrochemically characterised using CV, DPV, and EIS at a scan rate of 100 mV/s vs Ag/AgCl as the reference electrode in the potential range of −0.1 to 0.6 V. A solution of 2 mM potassium

• mV/s vs a Ag/AgCl electrode in the potential range of −0.1–0.6 V. The DPV was carried out to identify the hybridisation of DNAs at a scan rate of 100 mV/s in the potential range from −0.5–0 V. All measurements and analysis were run utilising the NOVA 2.1.4 software. The effective surface area was

• and modified SPCE within the potential window of −0.1 to 0.6 V at a scan rate of 100 mV/s vs Ag/AgCl. (c) DPV for SPCE and modified SPCE at a potential range from −0.1 to 0.6 V, a step potential of 5 mV, and modulation amplitude of 25 mV. (d) EIS for SPCE and modified SPCE was carried out at a

LED-light-activated photocatalytic performance of metal-free carbon-modified hexagonal boron nitride towards degradation of methylene blue and phenol

• Nirmalendu S. Mishra and
• Pichiah Saravanan

Beilstein J. Nanotechnol. 2022, 13, 1380–1392, doi:10.3762/bjnano.13.114

• utilizing an EMX micro A200-9.5/12/S/W, Bruker Biospin, Germany. Photoelectrochemical study The photoelectrochemical properties of the studied materials were evaluated through a CHI 650 electrochemical workstation comprising a three-electrode system with Pt and Ag/AgCl as counter and reference electrodes

• HBN and MBN-80 were determined to be −1.66 V and −1.52 V, respectively. The respective potentials vs Ag/AgCl were converted to NHE. The CBMBN shifted to a lower edge potential (by 0.14 V) due to the interaction with the adjacent nitrogen/boron atoms through C–B and C–N bonds [17]. Furthermore, this

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

• with a thin gold layer (thickness 20 nm, Sputter Coater 108 auto, Cressington, Dortmund). Afterwards the samples have been analyzed using SEM (15 kV, CAMBRIDGE Stereoscan 200 SEM, Zeiss AG, Oberkochen). Results and Discussion As a first step of the investigation of the air retaining capabilities of

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

• public health threat of antimicrobial resistance [11]. Au/Ag BMNPs with different structural motifs and biological properties have been produced via eco-friendly synthesis using natural extracts or natural compounds which act as both reducing and capping agents [2]. When these green methods are used to

• obtain metallic NPs, particle growth, colloidal stability, as well as the biological profile of the resulting products are generally attributed to the phenolic and/or the carbohydrate components of the capping natural source [12]. Particularly interesting are Au/Ag bimetallic systems with a core–shell

• structure. In this case, the inner Au component favors cellular entry (typically via endocytosis) and slow release of the Ag+ ions, to which the overall biological activity of the system is ascribed. It all comes down to greater system biocompatibility [2]. Au/Ag BMNPs with a core–shell architecture can be

Near-infrared photoactive Ag-Zn-Ga-S-Se quantum dots for high-performance quantum dot-sensitized solar cells

• Roopakala Kottayi,
• Ilangovan Veerappan and
• Ramadasse Sittaramane

Beilstein J. Nanotechnol. 2022, 13, 1337–1344, doi:10.3762/bjnano.13.110

• of solar cells. In this study, we synthesized Ag-Zn-Ga-S-Se-based alloyed QDs by colloidal hot injection and characterized them. The X-ray photoelectron spectrum analysis confirms the +1, +2, +3, −2, and −2 oxidation states of, respectively, Ag, Zn, Ga, S, and Se in the QDs, and the energy-dispersive

• X-ray spectrum analysis confirms the 1:1:1:1.5:1.5 stoichiometric ratio of, respectively, Ag, Zn, Ga, S, and Se. These two results indicate the formation of I-II-III-VI3-type alloyed crystals (AgZnGaS1.5Se1.5 nanocrystals). TEM image analysis reveals the QD nature of the synthesized Ag-Zn-Ga-S-Se

• lead and cadmium have been used as sensitizers in QDSCs. However, due to the high toxicity and low efficiency, research moved to group I-III-VI QDs such as Cu-In-Se, Cu-In-S, Ag-In-Se, Ag-In-S, Ag-Ga-S, and Ag-Ga-S. Even though their light-harvesting capability is still limited by a high number of

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

• semiconductor surface. SPRs can potentially boost quantum yield by broadening the spectral response range of semiconductors. Fe, Au, Co, Ag, Ni, Bi, Al, and other metallic elements are often deposited and doped. For example, a nanostructure composite based on plasmonic Ag metal nanoclusters and monoclinic BiVO4

• nanoparticles was fabricated using high-energy ball milling [86]. Ag clusters (5–10 nm) were homogeneously distributed on the flocculated BiVO4 particles (50–100 nm). The structure of the Ag-doped BiVO4 nanocomposite would promote the efficiency of the photodegradation of acid blue dyes. Huang and co-workers

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

• alloy samples, as well as the LIPSS-covered Al alloy sample were investigated by means of AFM on a Nanosurf Mobile S device (Nanosurf AG, Liestal, Switzerland). The investigated area had a size of 30 µm × 30 µm. The measurements were performed in contact mode with a Contr10 (Nanoworld, Neuchatel

• Technics Inc., Alexandria, USA; 7–10 mA, 5 min) and studied with the SEM (525 M, Philips AG, Amsterdam, Netherlands). Legs of U. plumipes were air-dried and otherwise prepared the same way for SEM analysis. Measurements were performed with ImageJ’s FIJI software [35]. Legs of A. similis were air-dried and

Studies of probe tip materials by atomic force microscopy: a review

• Ke Xu and
• Yuzhe Liu

Beilstein J. Nanotechnol. 2022, 13, 1256–1267, doi:10.3762/bjnano.13.104

• highly fluorescent gold-silver bimetallic nanomaterials with stable fluorescence properties by a simple one-pot method using thiol salts as ligands. TPN-AuAgNCs were synthesised using tiopronin (TPN) as ligand, and the clusters emitted strong red fluorescence with good burst selectivity for Fe3+ after Ag

• ) as ligand, and the obtained clusters showed solid red light at 700 nm and sensitive burst selectivity for I−. The fluorescence was recovered to a certain extent by further adding Ag+. A rapid method for detecting I− and Ag+ was established and successfully applied to detect I− and Ag+ in actual

Roll-to-roll fabrication of superhydrophobic pads covered with nanofur for the efficient clean-up of oil spills

• Patrick Weiser,
• Robin Kietz,
• Marc Schneider,
• Matthias Worgull and
• Hendrik Hölscher

Beilstein J. Nanotechnol. 2022, 13, 1228–1239, doi:10.3762/bjnano.13.102

• analyzed in the following, we used 1.1 g of cosmetic cotton (Rossmann AG). The filled pad is then placed between two polyimide films (DuPont Kapton, 50 µm) just covering the edge to prevent cutting through the material during heat sealing. The welding is carried out in a custom-made tool, consisting of two

Design of surface nanostructures for chirality sensing based on quartz crystal microbalance

• Yinglin Ma,
• Xiangyun Xiao and
• Qingmin Ji

Beilstein J. Nanotechnol. 2022, 13, 1201–1219, doi:10.3762/bjnano.13.100

• of metal-based chiral sensing applications. Based on surface modification or induced crystallization, metal nanostructures may bear chiral surfaces for chiral sensing of enantiomers. For example, Zhang et al. achieved chiral recognition of cysteine enantiomers using nucleotide-modified Ag

• nanoparticles [124]. Zhang et al. used ʟ-cysteine modified Au nanoparticles for chiral recognition of carnitine [125]. Jafari et al. used chitosan modified Ag nanoparticles for chiral sensing of tryptophan enantiomers [126]. Niu et al. reported the chiral recognition of tryptophan (Trp) on chiral Au facets

• -amino acids on metal crystals of Ag, Cu, Pt and alloys by density functional theory (DFT) simulations. They revealed that Pt(531) with a step–kink metal surface has better enantiospecificity for eight α-amino acids (alanine, α-aminobutyric acid, valine, leucine, phenylalanine, serine, cysteine, and 3

Recent advances in green carbon dots (2015–2022): synthesis, metal ion sensing, and biological applications

• Aisha Kanwal,
• Naheed Bibi,
• Sajjad Hyder,
• Arif Muhammad,
• Hao Ren,
• Jiangtao Liu and
• Zhongli Lei

Beilstein J. Nanotechnol. 2022, 13, 1068–1107, doi:10.3762/bjnano.13.93

• , patterning, and sensing, as a result of their advantageous characteristics [125]. Han and co-workers extracted cow milk-derived CDs (CM-CDs) from aqueous solution using ethyl acetate to create amphiphilic CM-CDs (ACMCDs). A unique ACMCD-Ag/polymethylmethacrylate antibacterial film was produced utilizing the

Biomimetic chitosan with biocomposite nanomaterials for bone tissue repair and regeneration

• Se-Kwon Kim,
• Sesha Subramanian Murugan,
• Pandurang Appana Dalavi,
• Sebanti Gupta,
• Sukumaran Anil,
• Gi Hun Seong and
• Jayachandran Venkatesan

Beilstein J. Nanotechnol. 2022, 13, 1051–1067, doi:10.3762/bjnano.13.92

• computed tomography (CT) scan radiographs which show good bone lodging in all implants. There are noticeable holes at the hydroxyapatite implant interface. Ag–Si hydroxyapatite implants, on the other hand, have a smooth contact between the host bone and the implant. Acemannan and chitosan coatings have

Analytical and numerical design of a hybrid Fabry–Perot plano-concave microcavity for hexagonal boron nitride

• Felipe Ortiz-Huerta and
• Karina Garay-Palmett

Beilstein J. Nanotechnol. 2022, 13, 1030–1037, doi:10.3762/bjnano.13.90

• silver (Ag), polymer (pol), air, hBN and DBR layer. The transfer matrices Lpol and Lair are defined as [25]: where G1,2 = arctan(L1,2λ0/n1,2πW01,02) is the Guoy phase shift in the air (n1 = 1) and polymer layer, respectively, where W01 = W02. The transmittance of the microcavity is calculated, from the

Electrocatalytic oxygen reduction activity of AgCoCu oxides on reduced graphene oxide in alkaline media

• Iyyappan Madakannu,
• Indrajit Patil,
• Bhalchandra Kakade and
• Kasibhatta Kumara Ramanatha Datta

Beilstein J. Nanotechnol. 2022, 13, 1020–1029, doi:10.3762/bjnano.13.89

• . Electrocatalytic enhancement of the Ag nanoarchitectonics can be obtained via support structures and amalgamating Ag with one or two additional metals. The work presented here deals with a facile microwave-assisted synthesis to produce bimetallic Ag-Cu and Ag-Co (1:1) oxide nanoparticles (NPs) and trimetallic

• the oxygen reduction reaction (ORR) in alkaline medium. Varying the Ag fraction in copper cobalt oxide has a significant influence on the ORR activity. At a ratio of 2:1:1, AgCuCo oxide NPs on rGO displayed the best values for onset potential, half-wave potential, and limiting current density (Jk) of

• attributes include high electrical conductivity, cost-effectiveness (50 times lower than Pt), and the ability to execute the ORR via a single step (four-electron transfer). Thus, Ag and its bi- and trimetallic alloys, with and without supporting matrices, have been extensively researched as potential ORR