Reliable fabrication of transparent conducting films by cascade centrifugation and Langmuir–Blodgett deposition of electrochemically exfoliated graphene

• Teodora Vićentić,
• Stevan Andrić,
• Vladimir Rajić and
• Marko Spasenović

Beilstein J. Nanotechnol. 2022, 13, 666–674, doi:10.3762/bjnano.13.58

• because glass slides are inexpensive and widely available, but also because the optical characteristics of deposited films can be subsequently examined [42]. For measuring the electrical resistance, the film was deposited onto Metrohm DropSens substrates with a pair of interdigitated electrodes (G-IDEPT10

A chemiresistive sensor array based on polyaniline nanocomposites and machine learning classification

• Jiri Kroutil,
• Alexandr Laposa,
• Ali Ahmad,
• Jan Voves,
• Vojtech Povolny,
• Ladislav Klimsa,
• Marina Davydova and
• Miroslav Husak

Beilstein J. Nanotechnol. 2022, 13, 411–423, doi:10.3762/bjnano.13.34

• controlling of individual sensing layers. The heating element can also be used for the desorption of measured gases or heating slightly above the ambient temperature in order to reduce temperature fluctuation. The 18 µm thick Cu interdigitated electrodes were covered with a 12 µm thick gold layer to improve

• the corrosion resistance. The width and spacing of interdigitated electrodes are 100 µm. The heating element (surface-mounted device SMD0402 resistor with an electric resistance of 50 Ω) and a platinum temperature sensor (SMD0603 Pt1000) are placed on the bottom side of each sensor by soldering with

Materials nanoarchitectonics at two-dimensional liquid interfaces

• Katsuhiko Ariga,
• Michio Matsumoto,
• Taizo Mori and
• Lok Kumar Shrestha

Beilstein J. Nanotechnol. 2019, 10, 1559–1587, doi:10.3762/bjnano.10.153

• with platinum interdigitated electrodes. An excellent sensor capability for H2 gas in humid air at room temperature was observed for a film of 10 layers of the aligned one-dimensional W18O49 nanowires. Various additional techniques to fabricate two-dimensional structures have been proposed. Advincula

Hydrophilicity and carbon chain length effects on the gas sensing properties of chemoresistive, self-assembled monolayer carbon nanotube sensors

• Juan Casanova-Cháfer,
• Carla Bittencourt and
• Eduard Llobet

Beilstein J. Nanotechnol. 2019, 10, 565–577, doi:10.3762/bjnano.10.58

• onto Au-decorated CNTs [28], in order to enhance the properties required to detect toxic gases. Additionally, the electronic properties of single-wall CNTs heavily depend on chirality, and the conduction properties of single-wall CNT films on top of interdigitated electrodes change dramatically

• were taken at 80 kV. Fabrication of the sensor substrate A 10 × 10 mm2 alumina substrate was employed. Interdigitated electrodes and a heating resistor were screen-printed on either side of the substrate employing a platinum ink (see Supporting Information File 1, Figure S6). The electrode area was

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

• silicon substrate. Here, we use an array of micron-scale interdigitated electrodes on glas with a defined potential difference applied between neighboring electrodes. By investigating the pre-defined potential difference between the electrodes, a possible influence of tip- or sample contamination can be

Engineering of oriented carbon nanotubes in composite materials

• Razieh Beigmoradi,
• Abdolreza Samimi and
• Davod Mohebbi-Kalhori

Beilstein J. Nanotechnol. 2018, 9, 415–435, doi:10.3762/bjnano.9.41

• are placed on a substrate that has some interdigitated electrodes. After applying an AC electric field, the CNTs are aligned between the electrodes. This product is widely used in electrical CNT equipment. A DC electric field is not suitable because it causes the accumulation of CNTs near one of the

Gas-sensing behaviour of ZnO/diamond nanostructures

• Marina Davydova,
• Alexandr Laposa,
• Jiri Smarhak,
• Alexander Kromka,
• Neda Neykova,
• Josef Nahlik,
• Jiri Kroutil,
• Jan Drahokoupil and
• Jan Voves

Beilstein J. Nanotechnol. 2018, 9, 22–29, doi:10.3762/bjnano.9.4

• , the peaks presented at 44.8° and 52.3° are assigned to the (111) and (002) diffraction peaks of Au in the interdigitated electrodes. Simulation of interaction between gas molecules and hybrid ZnO NRs/NCD sensor structure In order to better understand the gas sensor measurements, ab initio simulations

Study of the vertically aligned in-plane switching liquid crystal mode in microscale periodic electric fields

• Artur R. Geivandov,
• Mikhail I. Barnik,
• Irina V. Kasyanova and
• Serguei P. Palto

Beilstein J. Nanotechnol. 2018, 9, 11–19, doi:10.3762/bjnano.9.2

• .9.2 Abstract The ongoing interest in fast liquid crystal (LC) modes stimulated by display technology and new applications has motivated us to study in detail the in-plane switching (IPS) vertically aligned (VA) mode. We have studied how the decrease of the period of the interdigitated electrodes (down

• Figure 1. We used interdigitated electrodes with three different combinations of width, w, and gap between fingers, g: 1) w = 2 μm, g = 1 μm; 2) w = 2 μm, g = 4 μm; and 3) w = 4 μm, g = 6 μm. Thus, we have studied experimentally samples with width-to-gap ratios of w/g = 2.0, 0.5 and 0.66 for periods of p

• interdigitated electrodes with three sets of width, w, and gap between fingers, g: 1) w = 2 μm, g = 1 μm; 2) w = 2 μm, g = 4 μm; and 3) w = 4 μm, g = 6 μm. Thus, we studied samples with width-to-gap ratios w/g = 2.0, 0.5 and 0.66 for periods p =3, 6 and 10 μm, correspondingly. The electrodes were made either of

Study of the correlation between sensing performance and surface morphology of inkjet-printed aqueous graphene-based chemiresistors for NO₂ detection

• F. Villani,
• C. Schiattarella,
• T. Polichetti,
• R. Di Capua,
• F. Loffredo,
• B. Alfano,
• M. L. Miglietta,
• E. Massera,
• L. Verdoliva and
• G. Di Francia

Beilstein J. Nanotechnol. 2017, 8, 1023–1031, doi:10.3762/bjnano.8.103

• the one printed on Al2O3 and D-SO is fabricated on Si/SiO2. The interdigitated electrodes have 8 fingers and 7 gaps; each finger is 250 μm wide and 4000 μm long, the gap between the fingers is 860 μm. I–V curve of a chemiresistor printed on paper (D-P17). Data are collected in the range [−5 V, 5 V]. a

Enhanced detection of nitrogen dioxide via combined heating and pulsed UV operation of indium oxide nano-octahedra

• Oriol Gonzalez,
• Sergio Roso,
• Xavier Vilanova and
• Eduard Llobet

Beilstein J. Nanotechnol. 2016, 7, 1507–1518, doi:10.3762/bjnano.7.144

• transducers that comprised interdigitated electrodes and a heating resistor. Compared to the standard, constant temperature operation of the sensor, mild heating (e.g., 100 °C) together with pulsed UV light irradiation employing a commercially available, 325 nm UV diode (square, 1 min period, 15 mA drive

• mechanically removed from the silicon substrate employing a razor blade and mixed in a solution of 1,2-propanediol to form a printable ink. This ink was screen-printed on top of commercially available (Ceram Tech GmbH, Germany), alumina transducer elements, which comprised a pair of Pt interdigitated

• electrodes (front side) and a Pt heating resistor (back side). Each electrode comprises 8 arms (300 µm in width) with an electrode gap of 300 µm. The electrodes cover an area of 2.5 × 2.5 mm2. The heating element on the backside of the substrate had a resistance of 8 Ω at room temperature. Once printed

Chemiresistive/SERS dual sensor based on densely packed gold nanoparticles

• Sanda Boca,
• Cosmin Leordean,
• Simion Astilean and
• Cosmin Farcau

Beilstein J. Nanotechnol. 2015, 6, 2498–2503, doi:10.3762/bjnano.6.259

• concept of a dual electrical/optical sensor, with both chemiresistive and SERS capabilities. The proposed device is realized by self-assembling 15 nm gold nanoparticles into few micrometers-wide strips across commercially available interdigitated electrodes. The dual-mode operation of the device is

• connected by interdigitated electrodes (IDE) on a commercially available chip. We tested the electrical response of the sensor to external stimuli and validated its capability to detect the model analyte mercaptophenyl boronic acid. In contrast with previous nanoparticle-based chemiresistors, which use

• formed by convective self-assembly, without implying lithographic procedures. The NP strips are fabricated directly across interdigitated electrodes on commercially available chips, making the DEOS easy to handle, and compatible with existing electrochemistry equipment. The adsorption of MBA model

Electrical properties of single CdTe nanowires

• Elena Matei,
• Camelia Florica,
• Andreea Costas,
• María Eugenia Toimil-Molares and
• Ionut Enculescu

Beilstein J. Nanotechnol. 2015, 6, 444–450, doi:10.3762/bjnano.6.45

• for the preparation of CdTe nanowires. For this purpose, electrochemical deposition from a bath containing Cd and Te ions was employed. This process leads to high aspect ratio CdTe nanowires, which were harvested and placed on a substrate with lithographically patterned, interdigitated electrodes

• nanowires were prepared by electrochemical deposition inside ion track, nanoporous membranes. Substrates with interdigitated electrodes were fabricated by employing a photolithographic approach. After the growth of the nanowires, they were placed onto the substrate and FIBIM was employed to make contacts

Gas sensing properties of nanocrystalline diamond at room temperature

• Marina Davydova,
• Pavel Kulha,
• Alexandr Laposa,
• Karel Hruska,
• Pavel Demo and
• Alexander Kromka

Beilstein J. Nanotechnol. 2014, 5, 2339–2345, doi:10.3762/bjnano.5.243

• , the three-dimensional model of the current density distribution of the hydrogenated NCD describes the transient flow of electrons between interdigitated electrodes and the hydrogenated NCD surface, that is, the formation of a closed current loop. Keywords: gas sensor; integrator; interdigitated

• sensitive to surrounding gases and/or liquids. Our previous works have shown that interdigitated electrodes (IDEs) capped with nanostructured, hydrogen-terminated, nanocrystalline diamond (NCD) were very sensitive and selective, especially towards phosgene gas [9][10]. In addition, we observed that the

• conductive electrodes (Figure 7, cross-sectional view). Moreover, the impedance measurements showed that the gap between the interdigitated electrodes is one of the most important geometric parameters of the sensor and should carefully be considered when enhancing the sensing response (Figure 3 and Figure 5

Nanocavity crossbar arrays for parallel electrochemical sensing on a chip

• Enno Kätelhön,
• Dirk Mayer,
• Marko Banzet,
• Andreas Offenhäusser and
• Bernhard Wolfrum

Beilstein J. Nanotechnol. 2014, 5, 1137–1143, doi:10.3762/bjnano.5.124

• featuring interdigitated electrodes at the intersections [20]. Reported applications include gene-function analysis [18], electroluminescence detection [21], mapping of cell topographies [22], detection of cellular enzyme secretion [19][23], detection of DNA hybridization [24], and evaluation of embryoid

Highly NO₂ sensitive caesium doped graphene oxide conductometric sensors

• Carlo Piloto,
• Marco Notarianni,
• Mahnaz Shafiei,
• Elena Taran,
• Dilini Galpaya,
• Cheng Yan and
• Nunzio Motta

Beilstein J. Nanotechnol. 2014, 5, 1073–1081, doi:10.3762/bjnano.5.120

• in oven at 60 °C for 12 h. The transducers consisted of Pt interdigitated electrodes (IDT) (200 µm separation) deposited on 0.25 mm thick alumina substrates. Material characterisations The structure and the composition of the synthesized GO and GO-Cs were analysed by field emission scanning electron