Humidity-dependent electrical performance of CuO nanowire networks studied by electrochemical impedance spectroscopy

• Jelena Kosmaca,
• Juris Katkevics,
• Jana Andzane,
• Raitis Sondors,
• Liga Jasulaneca,
• Raimonds Meija,
• Kiryl Niherysh,
• Yelyzaveta Rublova and
• Donats Erts

Beilstein J. Nanotechnol. 2023, 14, 683–691, doi:10.3762/bjnano.14.54

• sensitive and fast responding nanowire-based gas sensors for the detection of CO, C2H5OH, H2S, and NO2 [10][11][12][13][14]. Unusually strong space-charge-limited currents observed in individual CuO nanowires [15] in combination with the mechanical strength [9][16] motivate their application as durable

Metal-organic framework-based nanomaterials as opto-electrochemical sensors for the detection of antibiotics and hormones: A review

• Akeem Adeyemi Oladipo,
• Saba Derakhshan Oskouei and
• Mustafa Gazi

Beilstein J. Nanotechnol. 2023, 14, 631–673, doi:10.3762/bjnano.14.52

• and luminescent MOF sensors for detection and monitoring of antibiotics and hormones from various samples are critically reviewed. The detailed sensing mechanisms and detection limits of MOF sensors are addressed. The challenges, recent advances, and future directions for the development of stable

• , high-performance MOFs as commercially viable next-generation opto-electrochemical sensor materials for the detection and monitoring of diverse analytes are discussed. Keywords: antibiotics sensing; endocrinal disorders; fluorescent sensor; hormones sensors; luminescent sensor; MOF nanohybrids

• detection (LOD), and are selective in many cases. However, they have a number of shortcomings. For example, in order to increase the sensitivity of the established immunoassays, Mitchell and Lowe [20] and Wu et al. [21] used the ELISA technique for the analysis of testosterone and progesterone, respectively

Titania nanoparticles for photocatalytic degradation of ethanol under simulated solar light

• Evghenii Goncearenco,
• Iuliana P. Morjan,
• Claudiu Teodor Fleaca,
• Florian Dumitrache,
• Elena Dutu,
• Monica Scarisoreanu,
• Valentin Serban Teodorescu,
• Alexandra Sandulescu,
• Crina Anastasescu and
• Ioan Balint

Beilstein J. Nanotechnol. 2023, 14, 616–630, doi:10.3762/bjnano.14.51

• exclude the possibility that these defects are located on the TiO2 surface and that the concentration of defects is below the detection limit of XPS [52][53]. Another explanation would be this: The surface depth sensitivity of XPS is known to be 5–10 nm compared to 1 μm in PL. Hence, this technique

Suspension feeding in Copepoda (Crustacea) – a numerical model of setae acting in concert

• Alexander E. Filippov,
• Wencke Krings and
• Stanislav N. Gorb

Beilstein J. Nanotechnol. 2023, 14, 603–615, doi:10.3762/bjnano.14.50

• during suspension feeding. In the past, numerical simulations were used to study the detection of prey, mates, or predators and the feeding current generation by limb motion [28][39][40][41]. However, mechanical property gradients and adhesion of setae were previously not addressed. As model organism we

SERS performance of GaN/Ag substrates fabricated by Ag coating of GaN platforms

• Magdalena A. Zając,
• Bogusław Budner,
• Malwina Liszewska,
• Bartosz Bartosewicz,
• Łukasz Gutowski,
• Jan L. Weyher and
• Bartłomiej J. Jankiewicz

Beilstein J. Nanotechnol. 2023, 14, 552–564, doi:10.3762/bjnano.14.46

• use in various applications, including biosensing and bioanalysis [4][5][6][7], and many defense and homeland security applications [8][9][10], such as forensic science [11] or detection of hazardous materials [12][13][14][15][16]. Any SERS technique application requires efficient, reproducible, and

• GaN platforms can then be coated with Au [26][28], Ag [25], AuCu, or AuAg alloys [24][29][30][31][32] to produce highly reproducible and efficient SERS substrates. GaN-based SERS substrates have been used so far for trace detection of explosive materials [33], fentanyl and bacterial spores’ analysis

Observation of multiple bulk bound states in the continuum modes in a photonic crystal cavity

• Rui Chen,
• Yi Zheng,
• Xingyu Huang,
• Qiaoling Lin,
• Chaochao Ye,
• Meng Xiong,
• Martijn Wubs,
• Yungui Ma,
• Minhao Pu and
• Sanshui Xiao

Beilstein J. Nanotechnol. 2023, 14, 544–551, doi:10.3762/bjnano.14.45

• confinement in a relatively simple way. Such strong resonances endow PhC-based BIC devices with a strong enhancement of light–matter interaction, indicating great potential for applications in ultrasensitive molecular fingerprint detection [12][13][35], hyperspectral biosensing imaging [36], novel flat light

Carbon nanotube-cellulose ink for rapid solvent identification

• Tiago Amarante,
• Thiago H. R. Cunha,
• Claudio Laudares,
• Ana P. M. Barboza,
• Ana Carolina dos Santos,
• Cíntia L. Pereira,
• Vinicius Ornelas,
• Bernardo R. A. Neves,
• André S. Ferlauto and
• Rodrigo G. Lacerda

Beilstein J. Nanotechnol. 2023, 14, 535–543, doi:10.3762/bjnano.14.44

• sensor based on a carbon nanotube–cellulose ink that proves to be highly sensitive to various solvents and water with different impurity levels and can detect glycerin in water down to the 10–100 ppm range. We provide insights into the liquid detection mechanism, combining the well-known swelling

• the set [62]. Results and Discussion Liquid analysis Detection of glycerin in water The liquid sensing measurements were performed by applying a fixed voltage (5 V) on the device while measuring the current (I) as a function of the time. 6.5 µL of the tested liquid was dripped onto the transducers

• liquids, namely mixtures of water with low concentrations of glycerin (10 and 100 ppm) and a number of organic solvents (DI water, isopropyl alcohol, toluene, chloroform, and ethyl alcohol). To probe the limit of detection of the MFC/MWCNT composite, we performed measurements of glycerin in water at parts

Nanoarchitectonics to entrap living cells in silica-based systems: encapsulations with yolk–shell and sepiolite nanomaterials

• Celia Martín-Morales,
• Jorge Fernández-Méndez,
• Pilar Aranda and
• Eduardo Ruiz-Hitzky

Beilstein J. Nanotechnol. 2023, 14, 522–534, doi:10.3762/bjnano.14.43

• results only as a tentative experiment to evaluate the biocatalytic performance. However, these preliminary findings combined with the observed CO2 release from the cultures and the detection of alcohol allowed us to confirm that the encapsulated yeast produced ethanol likely faster and in higher amounts

The origin of black and white coloration of the Asian tiger mosquito Aedes albopictus (Diptera: Culicidae)

• Manuela Rebora,
• Gianandrea Salerno,
• Silvana Piersanti,
• Alexander Kovalev and
• Stanislav N. Gorb

Beilstein J. Nanotechnol. 2023, 14, 496–508, doi:10.3762/bjnano.14.41

• dark pigment. The white colour of the scales has a structural origin. The structural white produced by the micro- and nanostructures of the scales on the tarsi of Ae. albopictus appears bright and is angle-dependent, since the reflected light changes according to the angle detection and according to

• in the near-infrared spectral range (>900 nm) is about 2.5 times stronger than the WS1 reflection (!) and up to five times stronger (at 45° detection) than in the UV spectral range (<300 nm) (Figure 6). Pronounced specular reflection (at 45° detection) could be seen at proximal and distal

• illumination (Figure 6). Enhanced reflection at 30° detection and distal illumination (compared with proximal illumination) (Figure 6a,b) should be related to the tilt angle of the individual scales (Figure 3a). There is also relative strong light scattering on the thin scale surface structure (Figure 3c–e

A mid-infrared focusing grating coupler with a single circular arc element based on germanium on silicon

• Xiaojun Zhu,
• Shuai Li,
• Ang Sun,
• Yongquan Pan,
• Wen Liu,
• Yue Wu,
• Guoan Zhang and
• Yuechun Shi

Beilstein J. Nanotechnol. 2023, 14, 478–484, doi:10.3762/bjnano.14.38

• couplers requiring secondary etching, the proposed full-etch grating coupler structure can reduce the complexity of fabrication and can provide a prospective platform for MIR photonic integration and photonic biosensor detection. Keywords: circular arc element; focusing grating coupler; germanium-on

• -silicon; mid-infrared; Introduction The mid-infrared (MIR) spectrum region covers the absorption band of most organic and inorganic matter. Thus, it has a broad application prospect in gas detection, environmental monitoring, lidar, free space optical communication, and remote sensing technologies [1][2

• proposed MIR grating coupler [14]. Finally, the transmission characteristics of the output fiber can be detected using an optical spectrum analyzer. There is a wide range of sensors for applications in, for example, biosensing, healthcare, disease detection, and gas detection. Therefore, research on those

Evaluation of electrosynthesized reduced graphene oxide–Ni/Fe/Co-based (oxy)hydroxide catalysts towards the oxygen evolution reaction

• Karolina Cysewska,
• Marcin Łapiński,
• Marcin Zając,
• Jakub Karczewski,
• Piotr Jasiński and
• Sebastian Molin

Beilstein J. Nanotechnol. 2023, 14, 420–433, doi:10.3762/bjnano.14.34

• ]. The spectra were obtained using the total electron yield (TEY) detection mode, which can sample down to a depth of a few nanometers at room temperature. The beamline optics was optimized to perform the experiment with an energy resolution of 200 meV and better. X-ray diffraction (XRD) measurements

Plasmonic nanotechnology for photothermal applications – an evaluation

• A. R. Indhu,
• L. Keerthana and
• Gnanaprakash Dharmalingam

Beilstein J. Nanotechnol. 2023, 14, 380–419, doi:10.3762/bjnano.14.33

The steep road to nonviral nanomedicines: Frequent challenges and culprits in designing nanoparticles for gene therapy

• Yao Yao,
• Yeongun Ko,
• Grant Grasman,
• Jeffery E. Raymond and
• Joerg Lahann

Beilstein J. Nanotechnol. 2023, 14, 351–361, doi:10.3762/bjnano.14.30

• , specifically for dose/particle calculations. Lastly, a volume or mass distribution should be presented. Dynamic light scattering (DLS) is often be used for the inspection of aqueous suspensions with results bedeviled by the normal constraints of DLS and ensemble detection [64]. Both disc centrifugation and

• ultracentrifugation provide ensemble detection of size distributions with their own issues and complexities (e.g., gradient-induced aggregation and pressure-induced particle reconfiguration) [65]. Determination of size on a per-particle basis, such as that obtained from NTA or the aforementioned cryo-TEM/solution AFM

Polymer nanoparticles from low-energy nanoemulsions for biomedical applications

• Santiago Grijalvo and
• Carlos Rodriguez-Abreu

Beilstein J. Nanotechnol. 2023, 14, 339–350, doi:10.3762/bjnano.14.29

• flocculation of the nanoparticles with an analyte detection limit of 10 μg/mL. Calderó et al. [40] prepared PIC nanoemulsions at room temperature using poly(oxyethylene)(4) sorbitan monolaurate as surfactant. The hydrophobic phase dispersed in the droplets was constituted by 10% ethyl cellulose dissolved in

Quasi-guided modes resulting from the band folding effect in a photonic crystal slab for enhanced interactions of matters with free-space radiations

• Kaili Sun,
• Yangjian Cai,
• Uriel Levy and
• Zhanghua Han

Beilstein J. Nanotechnol. 2023, 14, 322–328, doi:10.3762/bjnano.14.27

• have been demonstrated in all aspects of light–matter interactions, ranging from optical generation [6], propagation [7], nonlinear processes [8] to signal detection [9] and collection, to name a few. Although QBIC resonances in all-dielectric nanostructures have become a popular and mainstream

Biocatalytic synthesis and ordered self-assembly of silica nanoparticles via a silica-binding peptide

• Mustafa Gungormus

Beilstein J. Nanotechnol. 2023, 14, 280–290, doi:10.3762/bjnano.14.25

• –MS analyses were done with a fused silica capillary column a (Restek 14623, Thermo Fischer Scientific Inc, Waltham, MA, USA), 150 °C injection temperature, 250 °C detection temperature, 1 µL injection volume, and 1 mL/min He flow rate. Dionex Chromeleon 7.2 software (Thermo Fischer Scientific Inc

High–low Kelvin probe force spectroscopy for measuring the interface state density

• Ryo Izumi,
• Masato Miyazaki,
• Yan Jun Li and
• Yasuhiro Sugawara

Beilstein J. Nanotechnol. 2023, 14, 175–189, doi:10.3762/bjnano.14.18

• known as a method that can measure the contact potential difference (CPD) between a tip and a sample with high spatial resolution [4][5]. KPFM is based on the detection of the electrostatic force between a tip and a sample using atomic force microscopy (AFM) [6][7][8]. CPD and topographic measurements

• advantages, namely high sensitivity to the electrostatic force gradient, high detection sensitivity using a cantilever with a weak spring constant at the first resonance, ease of implementation in adding FM-AFM, and no need to enhance the bandwidth of the cantilever deflection sensor. FM-KPFM is used to

• measured using the displacement detection system was controlled by an automatic gain control (AGC) circuit to keep the cantilever vibration amplitude A constant, and the frequency shift Δf of the cantilever was measured using a phase-locked loop (PLL) circuit (SPECS GmbH: Nanonis OC4). AFM measurements

Intermodal coupling spectroscopy of mechanical modes in microcantilevers

• Ioan Ignat,
• Bernhard Schuster,
• Jonas Hafner,
• MinHee Kwon,
• Daniel Platz and
• Ulrich Schmid

Beilstein J. Nanotechnol. 2023, 14, 123–132, doi:10.3762/bjnano.14.13

• the topographical features [1][2][3][4][5][6]. There is, however, room for improvement in cutting-edge AFM experiments, as the standard quantum limit in sensitivity, represented by a minimum between detection noise and backaction noise, has not been reached [7][8]. Beyond this limit, techniques exist

• . Thus, the mechanical position can be read through the optical cavity. Upon this basic interaction, many emerging kinds of behaviour were found: sideband cooling down to quantum levels [15][16], parametric amplification [17] before signal detection, state squeezing [18][19][20], and Bogoliubov modes [21

• ][22] for drastically reducing noise and directional amplifiers [23][24]. The group of proposed applications is even larger and hosts ideas such as quantum circulators [23][24], Ising model simulators [25], and improved gravity wave detection experiments [8]. All these techniques can be migrated to AFM

Characterisation of a micrometer-scale active plasmonic element by means of complementary computational and experimental methods

• Ciarán Barron,
• Giulia Di Fazio,
• Samuel Kenny,
• Silas O’Toole,
• Robin O’Reilly and
• Dominic Zerulla

Beilstein J. Nanotechnol. 2023, 14, 110–122, doi:10.3762/bjnano.14.12

• detection methods [19][20], as their formation is highly dependent on refractive index changes, and sub-wavelength optics [21]. Our active plasmonic element also provides the potential for an even more sensitive technique. Active plasmonics has further advantages due to the tunable nature of the physics

• . Because of this extreme sensitivity, small changes in the local temperature, and hence in optical constants, will result in subtle but appreciable changes of reflectivity in the SPR curve. Homodyne detection, with the modulated electric currents as reference, enables a detailed examination of the

• equivalent profile obtained experimentally for a 10 × 10 μm2 structure with FWHM ≈19.4 μm. The simulation results for the thermoelectrical effects are in line with the experimental results observed through AFM detection of thermal expansion, showing the same distribution, and similar FWHM, as Figure 10

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

• non-bonding doublets of oxygen atoms create steric hindrance and avoid their aggregation. The coating, colorless before irradiation, becomes progressively pale yellow, orange, then finally brown. Due to the strong increase of AgNPs, the measurement system reaches the detection limit (OD > 3) after 15

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

• Nanostructured noble metal thin films are highly studied for their interesting plasmonic properties. The latter can be effectively used for the detection of small and highly diluted molecules by the surface-enhanced Raman scattering (SERS) effect. Regardless of impressive detection limits achieved, synthesis

• tuning deposition (i.e., the alloy chemical composition) and dealloying (i.e., dealloying media) parameters to reach the best SERS properties. These are reported for samples dealloyed in HCl and with 30 atom % of silver at the initial state with a detection limit down to 10−10 mol·L−1 for a solution of

• sensors are promising for various applications in chemical (e.g., explosive [3] or chemical warfare agents [4]) or biological (e.g., lipid or protein [5]) sensing, environmental monitoring [6] as well as in food safety through the detection of pollutants such as phenol [3][7] or rhodamine [8]. The SERS

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

• [15][16]. - Detection of ultrahigh frequency radiation by new devices: Based on Josephson junctions with frequencies of 72–265 GHz using the Josephson grain boundary junction fabricated in YBaCuO films [17] and broad-band detectors based on YBaCuO Josephson junctions fabricated on ZrYO bicrystals with

The influence of structure and local structural defects on the magnetic properties of cobalt nanofilms

• Alexander Vakhrushev,
• Aleksey Fedotov,
• Olesya Severyukhina and
• Anatolie Sidorenko

Beilstein J. Nanotechnol. 2023, 14, 23–33, doi:10.3762/bjnano.14.3

• performance improvement can be solved with the help of spintronics devices, which are currently presented in a fairly wide variety of valuable effects: spin valves and valves in thin films and heterostructures [19][20], sensors based on the anomalous Hall effect [21], spin injection and magnetism detection

Observation of collective excitation of surface plasmon resonances in large Josephson junction arrays

• Roger Cattaneo,
• Mikhail A. Galin and
• Vladimir M. Krasnov

Beilstein J. Nanotechnol. 2022, 13, 1578–1588, doi:10.3762/bjnano.13.132

• consequence of collective surface-plasmon resonances. The finite threshold number is the consequence of the collective excitation of the cavity mode [32][33]. Radiation detection For detection of EMW emission we use a superconducting microwave detector. Figure 6a shows an optical image of the detector. It

• detection efficiency, Pa/PMW ≈ 10−3, is small because of geometrical constraints, (ra/rMW)2 ≪ 1. For the analysis of EMW emission, the detector is placed face-to-face at about 1.5 cm distance from the array. The sample/detector arrangement is similar to that described in [9]. The detector position is fixed

• function of the number of active junctions, N. Blue symbols are measured directly from the I–V characteristics, and orange symbols are obtained by integration of the resonant peak area in dI/dV. (c) Simultaneous transport and detection measurements of a secondary resonance from Figure 7a. (d) Step

Induced electric conductivity in organic polymers

• Konstantin Y. Arutyunov,
• Anatoli S. Gurski,
• Vladimir V. Artemov,
• Alexander L. Vasiliev,
• Azat R. Yusupov,
• Danfis D. Karamov and
• Alexei N. Lachinov

Beilstein J. Nanotechnol. 2022, 13, 1551–1557, doi:10.3762/bjnano.13.128

• characteristics of each lead electrode separately. To measure differential characteristics dI/dV(V), modulation technique and phase-sensitive lock-in detection were used. To suppress the negative effect of stray electromagnetic pickups, a multistage RLC filter system was used [17]. While R(T) measurements at