Engineered PEG–PCL nanoparticles enable sensitive and selective detection of sodium dodecyl sulfate: a qualitative and quantitative analysis

• Soni Prajapati and
• Ranjana Singh

Beilstein J. Nanotechnol. 2025, 16, 385–396, doi:10.3762/bjnano.16.29

• presence of peaks at 2349 and 2073 cm−1 might be due to ambient CO2 absorption or other environmental factors during measurement. This spectral analysis confirms the successful incorporation of PEG and PCL into the nanoparticle structure, showing their characteristic functional groups and molecular

Liver-targeting iron oxide nanoparticles and their complexes with plant extracts for biocompatibility

• Shushanik A. Kazaryan,
• Seda A. Oganian,
• Gayane S. Vardanyan,
• Anatolie S. Sidorenko and
• Ashkhen A. Hovhannisyan

Beilstein J. Nanotechnol. 2024, 15, 1593–1602, doi:10.3762/bjnano.15.125

• (0.21 µg/mL) were detected via HPLC [50]. In this study, we synthesized by a chemical method monocrystalline, round Fe3O4 NPs with a diameter of 15 ± 4 nm [50][51]. Interaction of NPs with the plant extract and rutin leads to the formation of complexes, as demonstrated by spectral analysis [50]. The

• applications. Spectral analysis of the composite of Fe3O4 NPs with 70% ethanol extract of T. polium in our previous studies revealed the formation of a complex with leveling of peaks characteristic of the extract and a hypochromic shift in the Fe3O4 NPs absorption spectrum [50]. The results of the impact of

• ]. Spectral analysis of sample complexes The analysis of the spectra of the studied samples of 70% ethanol buffer extract of T. polium, rutin, and their complexes with Fe3O4 NPs was carried out at wavelengths from 200 to 800 nm using a UV–vis spectrophotometer UV-VIS 18 (MRC, Israel) [50]. Animal experiment

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

• spectral analysis of vibrations [49]. The thermomechanical noise analysis approximates the bridge as a simple harmonic oscillator with one DOF, as has been used for determining the spring constant of AFM cantilevers [50]. This approach provides an approximation for the stiffness k in terms of the measured

• thermally induced displacement z and temperature T, where kB is the Boltzmann constant. Spectral analysis also provides the other basic parameters such as resonant frequency f and Q-factor (Figure 4). The displacement of the electrothermally actuated opMEMS bridge was recorded for currents with amplitudes

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

• with high-Q probes, they introduced a quick and efficient alternative method based on the spectral analysis of the frequency shift detected by the PLL. If their concept was transposable to the case of qPlus sensors without loss of accuracy in the calibration, which is not established so far, it would

Nonmonotonous temperature dependence of Shapiro steps in YBCO grain boundary junctions

• Leonid S. Revin,
• Dmitriy V. Masterov,
• Alexey E. Parafin,
• Sergey A. Pavlov and
• Andrey L. Pankratov

Beilstein J. Nanotechnol. 2021, 12, 1279–1285, doi:10.3762/bjnano.12.95

• characteristics of detectors and mixers based on HTSC JJs [6][7][8][9][10][11] have been actively studied. Josephson junctions have also been used for various spectroscopic applications [12]. In this area, the AC Josephson effect is utilized for the Hilbert-transform spectral analysis [13][14]. It should be noted

• . For applied tasks of terahertz imaging [47], mixing [36], and Hilbert-transform spectral analysis [13] it is not possible to vary the incident power over a wide range. The power level is set there by losses, mismatch, and power absorption by the samples under study. Moreover, in applied problems one

The role of gold atom concentration in the formation of Cu–Au nanoparticles from the gas phase

• Yuri Ya. Gafner,
• Svetlana L. Gafner,
• Darya A. Ryzkova and
• Andrey V. Nomoev

Beilstein J. Nanotechnol. 2021, 12, 72–81, doi:10.3762/bjnano.12.6

• ]. An experimental study of the ensemble of these nuclei demonstrated that they are nanostructures consisting of pure copper. The obtained results clearly illustrate that the spectral analysis, often used to determine the chemical composition of sufficiently large samples, can take into account not only

Porous silver-coated pNIPAM-co-AAc hydrogel nanocapsules

• William W. Bryan,
• Riddhiman Medhi,
• Maria D. Marquez,
• Supparesk Rittikulsittichai,
• Michael Tran and
• T. Randall Lee

Beilstein J. Nanotechnol. 2019, 10, 1973–1982, doi:10.3762/bjnano.10.194

• modification of the polymer backbone [83][85]. To demonstrate the thermo-responsive behavior of the soft hydrogel polymer core particles, we performed UV–vis spectral analysis on the THPC gold-seeded hydrogel core particles at selected temperatures. Figure 3 shows the UV–vis spectra of the THPC gold-seeded

Fabrication and characterization of Si_1−xGe_x nanocrystals in as-grown and annealed structures: a comparative study

• Muhammad Taha Sultan,
• Adrian Valentin Maraloiu,
• Ionel Stavarache,
• Jón Tómas Gudmundsson,
• Andrei Manolescu,
• Valentin Serban Teodorescu,
• Magdalena Lidia Ciurea and
• Halldór Gudfinnur Svavarsson

Beilstein J. Nanotechnol. 2019, 10, 1873–1882, doi:10.3762/bjnano.10.182

• that obtained by annealing in H2/N2 ambient. Additionally, the annealing in H2/N2 ambient results in a blue-shift of peak N and is limited as H2 tends to leave the structure when annealed above 400 °C. To further elucidate the origin of peaks I and N, further studies [22][37] of spectral analysis at

Tuning the performance of vanadium redox flow batteries by modifying the structural defects of the carbon felt electrode

• Ditty Dixon,
• Deepu Joseph Babu,
• Aiswarya Bhaskar,
• Hans-Michael Bruns,
• Joerg J. Schneider,
• Frieder Scheiba and
• Helmut Ehrenberg

Beilstein J. Nanotechnol. 2019, 10, 1698–1706, doi:10.3762/bjnano.10.165

• information about the extent of defects in a graphite material [17][18]. From the Raman spectral analysis, it was found that the pristine sample had a lower ID/IG ratio of 1.2 compared to the N2-plasma-treated sample of 1.7. This indicates that the N2 plasma treatment process served to increase the defects in

Rapid thermal annealing for high-quality ITO thin films deposited by radio-frequency magnetron sputtering

• Petronela Prepelita,
• Ionel Stavarache,
• Doina Craciun,
• Florin Garoi,
• Catalin Negrila,
• Beatrice Gabriela Sbarcea and
• Valentin Craciun

Beilstein J. Nanotechnol. 2019, 10, 1511–1522, doi:10.3762/bjnano.10.149

• films achieve significantly improved performance, both structurally and optically. The effect of RTA and the various deposition conditions were analyzed using the Swanepoel [40] and Drude [41][42][43] methods, in order to obtain the optical constants. Spectral analysis in the UV–vis–NIR range of these

Biomimetic synthesis of Ag-coated glasswing butterfly arrays as ultra-sensitive SERS substrates for efficient trace detection of pesticides

• Guochao Shi,
• Mingli Wang,
• Yanying Zhu,
• Yuhong Wang,
• Xiaoya Yan,
• Xin Sun,
• Haijun Xu and
• Wanli Ma

Beilstein J. Nanotechnol. 2019, 10, 578–588, doi:10.3762/bjnano.10.59

• the reported methods of pesticide residue detection [38][39][40], SERS is an accurate, rapid and non-destructive spectral analysis technique that can take advantage of “fingerprint” information to characterize the target analytes. Here, we evaluated the practicability of the Ag-G.b.-20 SERS substrate

Polarization-dependent strong coupling between silver nanorods and photochromic molecules

• Gwénaëlle Lamri,
• Alessandro Veltri,
• Jean Aubard,
• Pierre-Michel Adam,
• Nordin Felidj and
• Anne-Laure Baudrion

Beilstein J. Nanotechnol. 2018, 9, 2657–2664, doi:10.3762/bjnano.9.247

• resonance in the SPY form, varying from 550 nm (Figure 2d) to 700 nm (Figure 2f), the photochromic transition leads to a strong coupling regime for the 90 nm long nanorods and to a weak coupling regime for 130 nm long nanorods. This spectral analysis was performed for various nanorod geometries and we

Cathodoluminescence as a probe of the optical properties of resonant apertures in a metallic film

• Kalpana Singh,
• Evgeniy Panchenko,
• Babak Nasr,
• Amelia Liu,
• Lukas Wesemann,
• Timothy J. Davis and
• Ann Roberts

Beilstein J. Nanotechnol. 2018, 9, 1491–1500, doi:10.3762/bjnano.9.140

• at the focal point of the parabolic mirror. The optical CL signal reflected from the parabolic mirror is coupled into a 600 μm core diameter multimode optical fibre via an achromatic mirror. The fibre is connected to a spectrometer (PI Acton SP2300i) for CL spectral analysis. The schematic and

Comparative study of antibacterial properties of polystyrene films with TiO_x and Cu nanoparticles fabricated using cluster beam technique

• Vladimir N. Popok,
• Cesarino M. Jeppesen,
• Peter Fojan,
• Anna Kuzminova,
• Jan Hanuš and
• Ondřej Kylián

Beilstein J. Nanotechnol. 2018, 9, 861–869, doi:10.3762/bjnano.9.80

• of 90° using an Al Kα X-rays source (1486.6 eV, 200 W, Specs). High-resolution Ti 2p spectra are recorded at pass energy of 10 eV with 10 scans (dwell time 100 ms, step 0.05 eV). Prior the analysis, XPS spectra are charge referenced to adventitious carbon peak at 285 eV. Spectral analysis is

One-step chemical vapor deposition synthesis and supercapacitor performance of nitrogen-doped porous carbon–carbon nanotube hybrids

• Egor V. Lobiak,
• Lyubov G. Bulusheva,
• Ekaterina O. Fedorovskaya,
• Yury V. Shubin,
• Pavel E. Plyusnin,
• Pierre Lonchambon,
• Boris V. Senkovskiy,
• Zinfer R. Ismagilov,
• Emmanuel Flahaut and
• Alexander V. Okotrub

Beilstein J. Nanotechnol. 2017, 8, 2669–2679, doi:10.3762/bjnano.8.267

• hydrosol at 60 °C and after water evaporation the precipitate was dried at 80 °C overnight. This resulted in cream-colored, orange–peach, and very light orange color in the case of {Ni4Mo12}, {Co4Mo12}, and {Fe30Mo72}, respectively. According to the atomic emission spectral analysis (iCAP-6500 spectrometer

Assembly of metallic nanoparticle arrays on glass via nanoimprinting and thin-film dewetting

• Sun-Kyu Lee,
• Sori Hwang,
• Yoon-Kee Kim and
• Yong-Jun Oh

Beilstein J. Nanotechnol. 2017, 8, 1049–1055, doi:10.3762/bjnano.8.106

• (FTIR) spectral analysis was conducted on the resists just after pressing at 110 °C for different times using an FTIR spectrometer (Nicolet 6700) over the 2400–600 cm−1 spectral range at room temperature. To examine the mechanical stability of the ICSG resists after annealing at different temperatures

Recombinant DNA technology and click chemistry: a powerful combination for generating a hybrid elastin-like-statherin hydrogel to control calcium phosphate mineralization

• Mohamed Hamed Misbah,
• Mercedes Santos,
• Luis Quintanilla,
• Christina Günter,
• Matilde Alonso,
• Andreas Taubert and
• José Carlos Rodríguez-Cabello

Beilstein J. Nanotechnol. 2017, 8, 772–783, doi:10.3762/bjnano.8.80

• directly on the ATR crystal for measurement. IR spectra were recorded using a Bruker Tensor 27 USA spectrophotometer with a diamond crystal. For each spectrum, a 128-scan spectrum was collected from 4000 to 500 cm−1 with a 2 cm−1 resolution. Spectral analysis was performed using OPUS v4.2 (Mattson

Dispersion of single-wall carbon nanotubes with supramolecular Congo red – properties of the complexes and mechanism of the interaction

• Anna Jagusiak,
• Barbara Piekarska,
• Tomasz Pańczyk,
• Małgorzata Jemioła-Rzemińska,
• Elżbieta Bielańska,
• Barbara Stopa,
• Grzegorz Zemanek,
• Janina Rybarska,
• Irena Roterman and
• Leszek Konieczny

Beilstein J. Nanotechnol. 2017, 8, 636–648, doi:10.3762/bjnano.8.68

• . The aim of the study was to explain the mechanism of this interaction. The interaction of CR and carbon nanotubes was studied using spectral analysis of the SWNT–CR complex, dynamic light scattering (DLS), differential scanning calorimetry (DSC) and microscopic methods: atomic force microscopy (AFM

Sub-nanosecond light-pulse generation with waveguide-coupled carbon nanotube transducers

• Felix Pyatkov,
• Svetlana Khasminskaya,
• Vadim Kovalyuk,
• Frank Hennrich,
• Manfred M. Kappes,
• Gregory N. Goltsman,
• Wolfram H. P. Pernice and
• Ralph Krupke

Beilstein J. Nanotechnol. 2017, 8, 38–44, doi:10.3762/bjnano.8.5

• . Light emission from WG-CNT transducers was characterized with both a free-space setup and a fiber-coupled system. The free-space setup allows for the spatial and spectral analysis of light emitted from a transducer along the surface normal. The fiber-coupled system is dedicated to analyzing short light

A dioxaborine cyanine dye as a photoluminescence probe for sensing carbon nanotubes

• Mohammed Al Araimi,
• Petro Lutsyk,
• Anatoly Verbitsky,
• Yuri Piryatinski,
• Mykola Shandura and
• Aleksey Rozhin

Beilstein J. Nanotechnol. 2016, 7, 1991–1999, doi:10.3762/bjnano.7.190

• are facing the aqueous medium. Results and Discussion We have studied the interaction of DOB-719 with SWNTs by spectral analysis of absorption and PL for as-prepared and aged (measured 24 h after the mixing) mixtures of DOB-719 with SWNTs in water. Essentially, an admixture of the dye (0.001 mg/mL) to

Noise in NC-AFM measurements with significant tip–sample interaction

• Jannis Lübbe,
• Matthias Temmen,
• Philipp Rahe and
• Michael Reichling

Beilstein J. Nanotechnol. 2016, 7, 1885–1904, doi:10.3762/bjnano.7.181

• : amplitude noise; cantilever stiffness; closed loop; detection system noise; frequency shift noise; non-contact atomic force microscopy (NC-AFM); Q-factor; spectral analysis; thermal noise; tip–sample interaction; Introduction Non-contact atomic force microscopy (NC-AFM) [1][2] is an unmatched surface

Manufacturing and investigation of physical properties of polyacrylonitrile nanofibre composites with SiO₂, TiO₂ and Bi₂O₃ nanoparticles

• Tomasz Tański,
• Wiktor Matysiak and
• Barbara Hajduk

Beilstein J. Nanotechnol. 2016, 7, 1141–1155, doi:10.3762/bjnano.7.106

• determines the width of the band gap. The second method allowing one to determine the relationship between the absorption coefficient α and the energy of the electromagnetic waves is using UV–vis spectral analysis of the obtained fibrous layers. In this case, the nanofibres were directly deposited on

Optical absorption signature of a self-assembled dye monolayer on graphene

• Tessnim Sghaier,
• Sylvain Le Liepvre,
• Céline Fiorini,
• Ludovic Douillard and
• Fabrice Charra

Beilstein J. Nanotechnol. 2016, 7, 862–868, doi:10.3762/bjnano.7.78

• at grazing incidence. The quantitative spectral analysis shows that the characteristic optical absorptions of drop-cast (SAM1) and dip-coated (SAM2) samples result from a homogeneous assembly of flat lying molecules with a surface density equivalent to one monolayer. Together with STM observations

Understanding interferometry for micro-cantilever displacement detection

• Alexander von Schmidsfeld,
• Tobias Nörenberg,
• Matthias Temmen and
• Michael Reichling

Beilstein J. Nanotechnol. 2016, 7, 841–851, doi:10.3762/bjnano.7.76

• cantilever and the noise performance of the system. Measurements are performed with the balanced detector to yield the best possible noise performance. To characterize the cantilevers and the noise performance of the detection system, we use well-established methods based on the spectral analysis of

Bacteriorhodopsin–ZnO hybrid as a potential sensing element for low-temperature detection of ethanol vapour

• Saurav Kumar,
• Sudeshna Bagchi,
• Senthil Prasad,
• Anupma Sharma,
• Ritesh Kumar,
• Rishemjit Kaur,
• Jagvir Singh and
• Amol P. Bhondekar

Beilstein J. Nanotechnol. 2016, 7, 501–510, doi:10.3762/bjnano.7.44

• ]. Figure 6 shows the FTIR spectra for the ZnO-TF and ZnO-NR structures, and their respective hybrid structures (ZnO-TF/bR and ZnO-NR/bR). Spectral analysis of the hybrid structures shows a shift in the frequency of the characteristic peaks of bR protein [63][64][65][66][67], which might be due to the

• scanning electron microscope (SEM, Hitachi) with an accelerating voltage of 5–15 kV. The film thickness was measured using a surface profilometer in contact mode (Taly-surf PGI 120). Raman and optical spectral analysis The optical absorption spectra of all the nanostructures were recorded using a UV–vis

• ). Photoluminescence spectral analysis for the ITO/ZnO-TF and ITO/ZnO-NR structures, and the respective hybrid structure for the structural analysis of the surface. Raman spectra. (a) ZnO-TF shows the characteristic peaks for ZnO at 467 cm−1, 563 cm−1 and 800 cm−1; (b) ZnO-TF/bR hybrid structure showing characteristic