Pulsed laser in liquid grafting of gold nanoparticle–carbon support composites

• Madeleine K. Wilsey,
• Teona Taseska,
• Qishen Lyu,
• Connor P. Cox and
• Astrid M. Müller

Beilstein J. Nanotechnol. 2025, 16, 349–361, doi:10.3762/bjnano.16.26

• fibers, taking advantage of the high internal surface area of carbon fiber paper. The pulsed laser-grafted composites exhibited zero measurable charge transfer resistance between gold nanoparticles and the carbon support, leading to superior cathode performance over conventionally prepared electrodes for

• electrocatalytic hydrogen evolution in aqueous bicarbonate reduction. Keywords: catalysis; composite; electroreduction; gold nanoparticles; impedance; Introduction The main challenge in the manufacturing of nanocatalyst-containing electrodes is the attachment of nanoparticles on electrode supports. Nanoparticles

• must be integrated with macroscopic supports to function as electrodes. A major obstacle in contemporary manufacturing of nanoparticle–support composites is their laborious inefficient multistep preparation, involving chemical synthesis, heating, cooling, collection, purification, distribution, and

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

• nozzles so that the fibers attract instead of repelling each other, or using auxiliary electrodes to control the electric field and concentrate the flow of fiber jets into a smaller deposition area [89]. Multichamber electrospinning Multichamber electrospinning incorporates special nozzle designs to

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

• and shunt resistance, interfacial defect density, and various metal electrodes were studied. An efficiency of 18.89% with VOC = 0.7919 V, JSC = 27.89 mA/cm2, and FF = 85.52% was reported for the device structure FTO/WS2/La2NiMnO6/Cu2O/Au [15][16]. In 2023, the highest optimized efficiency of 24.08

Characterization of ZnO nanoparticles synthesized using probiotic Lactiplantibacillus plantarum GP258

• Prashantkumar Siddappa Chakra,
• Aishwarya Banakar,
• Shriram Narayan Puranik,
• Vishwas Kaveeshwar,
• C. R. Ravikumar and
• Devaraja Gayathri

Beilstein J. Nanotechnol. 2025, 16, 78–89, doi:10.3762/bjnano.16.8

• peak current, though a steady addition led to decreased currents, possibly due to surface accumulation. The Nyquist plots display a larger impedance for ZnO electrodes. To fit the data into an analogous circuit, an uninterrupted phase element (Q1) was introduced with the adjustable parameters angular

Electrochemical nanostructured CuBTC/FeBTC MOF composite sensor for enrofloxacin detection

• Thi Kim Ngan Nguyen,
• Tien Dat Doan,
• Huy Hieu Luu,
• Hoang Anh Nguyen,
• Thi Thu Ha Vu,
• Quang Hai Tran,
• Ha Tran Nguyen,
• Thanh Binh Dang,
• Thi Hai Yen Pham and
• Mai Ha Hoang

Beilstein J. Nanotechnol. 2024, 15, 1522–1535, doi:10.3762/bjnano.15.120

• −6 M [32]. The combination of two types of MOFs has been rarely investigated for the detection of antibiotics. To our current knowledge, no reports have been made on the use of electrodes modified with a mixture of MOFs for the detection of enrofloxacin. In this study, a sensor was developed using a

• mixture of CuBTC and FeBTC to modify carbon paste electrodes for the determination of enrofloxacin. The characterization and properties of the fabricated electrode, including molecular structure, morphology, and electrochemical characteristics, were thoroughly investigated using various analytical

• )(Fe)BTC@CPE electrode The electrochemical behaviour of ENR was studied on both CPE and modified electrodes using cyclic voltammetry in the potential window from 0.4 to 1.2 V. A modified electrode containing 5% CuBTC and 5% FeBTC was used for the investigation. The green line in Figure 6a shows the

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

• wavelength can be tuned by changing the electric field without altering the reflectance values [32]. Shuai et al. introduce a bulk acoustic resonator (BAW) comprised of a sandwich-like structure with an LN film positioned between two aluminum electrodes. In this setup, acoustic waves are generated and

Out-of-plane polarization induces a picosecond photoresponse in rhombohedral stacked bilayer WSe₂

• Guixian Liu,
• Yufan Wang,
• Zhoujuan Xu,
• Zhouxiaosong Zeng,
• Lanyu Huang,
• Cuihuan Ge and
• Xiao Wang

Beilstein J. Nanotechnol. 2024, 15, 1362–1368, doi:10.3762/bjnano.15.109

• monolayers of WSe2 were aligned at a 0° angle to form the 3R phase. The graphene/3R WSe2/graphene heterojunctions were aligned and assembled onto a SiO2/Si substrate by the all-dry transfer method. Au/Cr (50/10 nm) electrodes were patterned using standard electron-beam lithography (EBL, Raith 150 Two) and

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

• , shown in Figure 1a, are connected by 140 μm-wide electrodes, which increase the effective bridge length. This has to be thought about when calculating the resistivity. Thus, 280 μm was added to the length of all square bridges except sample A1 (electrodes are already integrated into this sample). The

• resistivity estimated considering the width of the electrodes ranged from 0.7 × 10−7 to 1.1 × 10−7 Ω·m for the four structures A1–A4 from Figure 1a. Bearing in mind that the residual resistance ratio of the studied samples is in the range from 1.9 to 2.5, the room temperature resistivity is close to the value

• clamp contacts as sample C1, but the measured area was further away from the contact points. This way, the current first flows through the superconducting electrodes with low thermal conductivity in the superconducting state, and only then goes to the bridge. Nevertheless, non-equilibrium heating

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

• floor for the smallest deflections. In addition to the above parameters, the resistances of the actuation and measurement lines were measured to be 340 and 450 Ω, respectively. The opMEMS bridge was then milled to obtain four coincident electrodes in the RoI (Figure 5) with the following FIB parameters

• importantly, our opMEMS already integrates four measurement lines, with the ability to expand to six or eight separate electrodes in the RoI. This encourages us to think of opMEMS as an experimental platform for more complex measurements than a simple two-line connection case. In the future, we will pursue

Quantum-to-classical modeling of monolayer Ge₂Se₂ and its application in photovoltaic devices

• Anup Shrivastava,
• Shivani Saini,
• Dolly Kumari,
• Sanjai Singh and
• Jost Adam

Beilstein J. Nanotechnol. 2024, 15, 1153–1169, doi:10.3762/bjnano.15.94

• , a large number of materials have been reported as ETLs/HTL materials, such as carbon [15], copper iodide [16], CuSbS2, NiO, CuSCN [17], ZnO, and CdS [18]. These materials promote efficient extraction of charge carriers and suppress recombination between the perovskite film and the electrodes. But in

• coating between the absorber and substrate/electrodes in the design of solar cells. Device Modeling The high carrier mobility, optimum bandgap, and suitable optical characteristics of monolayer Ge2Se2 as discussed in the previous section, further motivated us to design a photovoltaic solar cell using

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

• laser ablating Au/Fe multilayers with varying thicknesses and deposition orders. Jakobi et al. [26] reported the synthesis of Pt–Ir alloy NPs by femtosecond laser ablation of a Pt9Ir target in acetone and further utilized as PtIr electrodes. In recent years, laser-ablated NPs/NSs have gained prominent

Bolometric IR photoresponse based on a 3D micro-nano integrated CNT architecture

• Yasameen Al-Mafrachi,
• Sandeep Yadav,
• Sascha Preu,
• Jörg J. Schneider and
• Oktay Yilmazoglu

Beilstein J. Nanotechnol. 2024, 15, 1030–1040, doi:10.3762/bjnano.15.84

• CNT thermistor wall stabilized by complementary CNT block structures. Two strategically positioned metal electrodes on the Si substrate provide lateral contacts with the vertical CNT bolometer, facilitating effective resistance measurements. Importantly, this CNT structure exhibits remarkable thermal

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

• increasing their use in daily life [38]. The first ion-sensitive field-effect transistor (IS FETs) biosensor combined the metal–oxide–semiconductor (MOS) structure with glass electrodes for measuring ion activities in electrochemical and biological environments [39]. Subsequently, hydrogen-sensitive MOSFET

• biorecognition layer, a transducer, and an amplifier (Figure 2). It typically consists of a semiconductor channel and three terminal electrodes named drain, source, and gate [37][49]. The biorecognition layer selectively binds the target biomolecule (analyte), such as enzymes, antibodies, and proteins in a

• real-time biosensing applications. Figure 13 shows the schematic view of a DC DG JL MOSFET-based biosensor. In this structure, double cavities were created in each side of the device between the gate electrodes and the dielectric SiO2 layer, and also separated with a Si3N4 dielectric region targeting

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

• –palladium alloyed nanocrystals are currently materials of high interest in electronics, specifically because they can be used in the building of electrodes for multilayer ceramic capacitors, exhibiting better thermal performance than silver nanocrystals, partly, because Pd has a relatively high critical

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

• , cost-effectiveness, and reliability. The use of modified electrodes has shown to improve significantly electrocatalytic activity and electrical conductivity of electrodes. Graphene, with sp2-hybridized carbon atoms in a single layer, has gained much attention because of its unique physicochemical

• electrodes used in electrochemical analysis. To the best of our knowledge, there are only few reports on TiO2/GQDs for electrochemical analysis. In the present work, TiO2/GQDs were prepared from coffee grounds and peroxo titanium complexes by a hydrothermal process. The simultaneous determination of URI and

• contain C (30.6%), O (55.3%), and Ti (14.1%), evenly distributed across the sample. This is in agreement with the XRD, Raman, and HRTEM observations. Simultaneous voltammetric determination of uric acid (URI) and hypoxanthine (HYP) Cyclic voltammetric behavior of different electrodes The cyclic

Reduced subthreshold swing in a vertical tunnel FET using a low-work-function live metal strip and a low-k material at the drain

• Kalai Selvi Kanagarajan and
• Dhanalakshmi Krishnan Sadhasivan

Beilstein J. Nanotechnol. 2024, 15, 713–718, doi:10.3762/bjnano.15.59

• Miller capacitance. Impact of dielectric materials on gate source and gate–drain capacitance The interelectrode capacitance is caused by the dielectric material of the gate. By applying a potential between the capacitor’s electrodes, the charges are polarized [9]. The capacitance of a parallel-plate

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

• , the technique mostly employs QTFs, based on the so-called qPlus design, which actually covers different types of sensors in terms of size and design of the electrodes. They all have in common a QTF featuring a metallic tip glued at the free end of one of its prongs. In this study, we report the

• ring electrode for mechanical excitation. The QTF surface features a set of three metallic electrodes evaporated on it. Their chemical composition has been characterized by EDS as consisting of a ≃200 nm thick layer of Au on a thinner chromium layer to favor the adhesion and wetting of Au. The massive

Heat-induced morphological changes in silver nanowires deposited on a patterned silicon substrate

• Elyad Damerchi,
• Sven Oras,
• Edgars Butanovs,
• Allar Liivlaid,
• Mikk Antsov,
• Boris Polyakov,
• Annamarija Trausa,
• Veronika Zadin,
• Andreas Kyritsakis,
• Loïc Vidal,
• Karine Mougin,
• Siim Pikker and
• Sergei Vlassov

Beilstein J. Nanotechnol. 2024, 15, 435–446, doi:10.3762/bjnano.15.39

• , and characterization of such materials [9][10]. Silver NWs are among the most extensively studied materials for NW-based transparent electrodes. High-quality Ag NWs can be synthesized relatively easily in large quantities, with precise control over their length and diameter [11][12]. Compared to

Modulated critical currents of spin-transfer torque-induced resistance changes in NiCu/Cu multilayered nanowires

• Mengqi Fu,
• Roman Hartmann,
• Julian Braun,
• Sergej Andreev,
• Torsten Pietsch and
• Elke Scheer

Beilstein J. Nanotechnol. 2024, 15, 360–366, doi:10.3762/bjnano.15.32

• Discussion The AAO template was fabricated by directly anodizing a ca. 1 µm thick aluminum (Al) film on a silicon (Si) substrate covered with 200 nm SiO2 and patterned Ti/Au (5/50 nm) bottom electrodes. It has pores with a diameter of around 35 nm, an interpore distance of around 50 nm, and a height of

• around 1 µm. The electrodeposition of multilayered nanowires was carried out in situ using a three-electrode potentiostat in the pulsed mode [20] at 25 °C. Note that the nanowires were selectively deposited in the pores on the top of the Ti/Au bottom electrodes as shown in Figure 1a. Therefore, most of

• the surface area of the AAO template (or Si substrate) is isolated from the bottom electrodes and the magnetic nanowires, thereby largely improving the flexibility for the design of the top electrodes. After removing the overgrowth by a thin blade or milling in argon plasma, a thick Al film of 180 nm

Controllable physicochemical properties of WO_x thin films grown under glancing angle

• Rupam Mandal,
• Aparajita Mandal,
• Alapan Dutta,
• Rengasamy Sivakumar,
• Sanjeev Kumar Srivastava and
• Tapobrata Som

Beilstein J. Nanotechnol. 2024, 15, 350–359, doi:10.3762/bjnano.15.31

• heterostructures were performed by preparing Ag electrodes (1 mm diameter) on top of the WOx films and p-Si substrates. The I–V data were acquired by applying DC voltage sweeps (−1 V→0 V→+1 V) using a Keithley source meter (Model 2400, Tektronix, USA) in a sandwiched configuration. During the measurements, the

Ultrasensitive and ultrastretchable metal crack strain sensor based on helical polydimethylsiloxane

• Shangbi Chen,
• Dewen Liu,
• Weiwei Chen,
• Huajiang Chen,
• Jiawei Li and
• Jinfang Wang

Beilstein J. Nanotechnol. 2024, 15, 270–278, doi:10.3762/bjnano.15.25

• wires as electrodes on both sides of the helical polydimethylsiloxane. Fabrication of the metal crack strain sensor The helical structure of PDMS was achieved by utilizing a screw as a mold, as depicted in Figure 5. To ensure the absence of bubbles within the grooves of the screw, a precisely fitting

CdSe/ZnS quantum dots as a booster in the active layer of distributed ternary organic photovoltaics

• Gabriela Lewińska,
• Piotr Jeleń,
• Zofia Kucia,
• Maciej Sitarz,
• Łukasz Walczak,
• Bartłomiej Szafraniak,
• Jerzy Sanetra and
• Konstanty W. Marszalek

Beilstein J. Nanotechnol. 2024, 15, 144–156, doi:10.3762/bjnano.15.14

• CPE (CPE-T) is responsible for the polarization of the sample in various areas of the material structure and on the electrodes. The mechanisms of ionic or electronic conductivity are represented by the resistance R [54]. Substitute systems with nanodots QD520:P3HT:PC71BM, QD580:P3HT:PC71BM, and QD600

• diagram of a potential solar cell with aluminum and indium tin oxide (ITO) electrodes is presented in Figure 10. The HOMO was determined using the UPS spectrum of the valence bands for all samples. The lowest unoccupied molecular orbital (LUMO) was determined by subtracting the energy gap from the HOMO

In situ optical sub-wavelength thickness control of porous anodic aluminum oxide

• Aleksandrs Dutovs,
• Raimonds Popļausks,
• Oskars Putāns,
• Vladislavs Perkanuks,
• Aušrinė Jurkevičiūtė,
• Tomas Tamulevičius,
• Uldis Malinovskis,
• Iryna Olyshevets,
• Donats Erts and
• Juris Prikulis

Beilstein J. Nanotechnol. 2024, 15, 126–133, doi:10.3762/bjnano.15.12

• heating, electrolyte flow [19], arrangement of the electrodes, and crystallographic orientation of the aluminum substrate [20]. In this work, we continuously recorded the reflectance spectra from a PAAO-coated aluminum surface during anodization. In a similar reflective interference spectroscopy (RIfS

Influence of conductive carbon and MnCo₂O₄ on morphological and electrical properties of hydrogels for electrochemical energy conversion

• Sylwia Pawłowska,
• Karolina Cysewska,
• Yasamin Ziai,
• Jakub Karczewski,
• Piotr Jasiński and
• Sebastian Molin

Beilstein J. Nanotechnol. 2024, 15, 57–70, doi:10.3762/bjnano.15.6

• hydrogel structure. The changes are within the range of 79.7–1390.5 kΩ at 0.01 Hz and 3.5–18.6 kΩ at 1 Hz. The trend of the electrochemical impedance spectroscopy (EIS) results shows the capacitive-dominant nature of the hydrogel for all analysed hydrogel-based electrodes. Three different regions were

• , 9.26 mF/cm2, and 4.38 mF/cm2, respectively, for , , and electrodes [56], but with four times higher catalyst loading. The catalytic kinetics of the hydrogel samples showed a much lower Tafel slope value for pure hydrogel (141 mV/dec) than those obtained for the hydrogel with catalyst and conductive

• . Table 2 compares the results obtained for the hydrogel samples investigated by us with the data of hydrogel-based electrodes obtained by other scientific groups. Comparing the overpotential values obtained by us and data obtained by other groups for hydrogel electrodes with various types of

Josephson dynamics and Shapiro steps at high transmissions: current bias regime

• Artem V. Galaktionov and
• Andrei D. Zaikin

Beilstein J. Nanotechnol. 2024, 15, 51–56, doi:10.3762/bjnano.15.5

• ) electrodes is kept much shorter than the superconducting coherence length, that is, d ≪ ξ0 ∼ vF/Δ. Here, Δ is the absolute value of the order parameter in superconducting electrodes and vF denotes the Fermi velocity. For simplicity here and below, we set the Planck and Boltzmann constants equal to unity (ℏ