Potential of a deep eutectic solvent in silver nanoparticle fabrication for antibiotic residue detection

• Le Hong Tho,
• Bui Xuan Khuyen,
• Ngoc Xuan Dat Mai and
• Nhu Hoa Thi Tran

Beilstein J. Nanotechnol. 2024, 15, 426–434, doi:10.3762/bjnano.15.38

•  6B. The substrate shows a linear range from 10−3 to 10−8 M, in which the LOD value is 10−8 M, and the highest EF reaches 1.69 × 107. The vibrational modes of the assigned peaks are listed in Table 1. There are two clearly enhanced peaks at 1567 and 1055 cm−1, whose correlation factors R2 are equal to

• . Vibrational modes assigned to specific peaks in Raman spectra of selected antibiotics. An overview of reported studies on NFT and SDZ detection. Funding This research was funded by University of Science, VNU-HCM under grant number T2023-149. Conflict of Interest The authors declare that they have no known

Berberine-loaded polylactic acid nanofiber scaffold as a drug delivery system: The relationship between chemical characteristics, drug-release behavior, and antibacterial efficiency

• Le Thi Le,
• Hue Thi Nguyen,
• Liem Thanh Nguyen,
• Huy Quang Tran and
• Thuy Thi Thu Nguyen

Beilstein J. Nanotechnol. 2024, 15, 71–82, doi:10.3762/bjnano.15.7

• /PLA and BBR NPs/PLA electrospun nanofiber scaffolds, the latter appeared with a darker yellow color, which is typical of the natural color of BBR (Figure 1c). Chemical characteristics and wettability of BBR-loaded PLA nanofiber scaffolds By identifying distinct vibrational modes of various chemical

Current-induced mechanical torque in chiral molecular rotors

• Richard Korytár and
• Ferdinand Evers

Beilstein J. Nanotechnol. 2023, 14, 711–721, doi:10.3762/bjnano.14.57

• -induced torques have been obtained within the non-equilibrium Green’s function formalism [13][14]. The current excites a variety of molecular vibrational modes, rendering the atomistic analysis of the torque very complex (see [6] for an ab initio calculation of the vibrations). To bring about a controlled

Mixed oxides with corundum-type structure obtained from recycling can seals as paint pigments: color stability

• Dienifer F. L. Horsth,
• Julia de O. Primo,
• Nayara Balaba,
• Fauze J. Anaissi and
• Carla Bittencourt

Beilstein J. Nanotechnol. 2023, 14, 467–477, doi:10.3762/bjnano.14.37

• observed by XRD. The spectrum is composed of four E1g vibrational modes (ca. 242 cm−1, ca. 413 cm−1, ca. 525 cm−1, and ca. 605 cm−1), as previously reported [19]. The Raman spectrum of sample 2 (Figure 2b) presents the seven optical symmetry modes expected for hematite (α-Fe2O3) in agreement with the XRD

• the four vibrational modes E1g characteristic of Cr2O3, and (b) sample 2, which features the seven characteristic vibrational modes (two A1g modes and five E1g modes) of Fe2O3. Scanning electron microscopy images of (a) sample 1 (low magnification, SE detector), (b) sample 1 (high magnification, SE

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

Revealing local structural properties of an atomically thin MoSe₂ surface using optical microscopy

• Lin Pan,
• Peng Miao,
• Anke Horneber,
• Alfred J. Meixner,
• Pierre-Michel Adam and
• Dai Zhang

Beilstein J. Nanotechnol. 2022, 13, 572–581, doi:10.3762/bjnano.13.49

• slightly decrease the in-plane electrical conductivity, whereas mirror twin boundaries lead to photoluminescence quenching and increase the conductivity [17]. Tip-enhanced Raman spectroscopy has been successfully used to visualize the point defect-related Raman vibrational modes in monolayer WS2 and edge

• can see that SHG intensity, photoluminescence, and Raman enhancement are strongly related to the local structure of the MoSe2 flake. Discussion A quantitative analysis of the enhancement factor of Raman modes of CuPc is shown in Figure 3a. Specifically, the vibrational modes located at 1339, 1449, and

• mode in Figure 3a with the azimuthal polarization (red) is higher. We also find that the Raman enhancement factors for different vibrational modes of CuPc are different, ranging from about 1.1 to 3.5. As reported in the literature [21], for monolayer CuPc on graphene, the vibrational modes at 1342

Influence of thickness and morphology of MoS₂ on the performance of counter electrodes in dye-sensitized solar cells

• Lam Thuy Thi Mai,
• Hai Viet Le,
• Ngan Kim Thi Nguyen,
• Van La Tran Pham,
• Thu Anh Thi Nguyen,
• Nguyen Thanh Le Huynh and
• Hoang Thai Nguyen

Beilstein J. Nanotechnol. 2022, 13, 528–537, doi:10.3762/bjnano.13.44

• modes, E2g (in plane) and A1g (out of plane), observed at 376 and 403 cm−1, respectively, are attributed to the 2H semiconductor phase [31][32][33]. The three first-order Raman modes, A1g, E2g, and E1g (288 cm–1), are attributed to vibrational modes of the S–Mo–S layer. Other well-known multiphonon

Zinc oxide nanostructures for fluorescence and Raman signal enhancement: a review

• Ioana Marica,
• Fran Nekvapil,
• Maria Ștefan,
• Cosmin Farcău and
• Alexandra Falamaș

Beilstein J. Nanotechnol. 2022, 13, 472–490, doi:10.3762/bjnano.13.40

• promoted strong light confinement, and the increased number of adsorption sites due to the branched ZnO nanostructures. Despite the fact that ZnO is a non-plasmonic semiconductor material, it can elicit a degree of SERS effect via chemical enhancement of atomic vibrational modes of the analyte. Kim et al

Solution combustion synthesis of a nanometer-scale Co₃O₄ anode material for Li-ion batteries

• Monika Michalska,
• Huajun Xu,
• Qingmin Shan,
• Shiqiang Zhang,
• Yohan Dall'Agnese,
• Yu Gao,
• Amrita Jain and
• Marcin Krajewski

Beilstein J. Nanotechnol. 2021, 12, 424–431, doi:10.3762/bjnano.12.34

• broadening yielded an estimated average crystallite size of about 40 nm, according to the Scherrer formula. The Raman spectrum shown in Figure 1b exhibits five bands located at 184, 464, 506, 601, and 670 cm−1, corresponding to the F2g3, Eg, F2g2, F2g1, and A1g active vibrational modes, respectively [5][10

The influence of an interfacial hBN layer on the fluorescence of an organic molecule

• Christine Brülke,
• Oliver Bauer and
• Moritz M. Sokolowski

Beilstein J. Nanotechnol. 2020, 11, 1663–1684, doi:10.3762/bjnano.11.149

• cm−1 in Figure 2 exhibit Raman shifts that correspond to the energies of the vibrational modes of PTCDA adsorbed on surfaces observed before [41][42]. The vibronic modes of PTCDA that can be observed in Raman spectroscopy are Ag, B1g, B2g, and B3g modes, with the most prominent modes being Ag modes

• /hBN/Cu(111), no such chemisorptive bonding was observed in UPS [32]. We suppose that the energy of the vibrational modes recorded here are influenced by molecule–substrate interactions. The chemisorptive bond to the metal surface makes the intermolecular bonds harder, which causes the respective

• vibrational modes to increase in energy. For Raman shifts below 1,500 cm−1, this interpretation is also supported by the closer agreement of the Raman modes on hBN/Cu(111) with those measured for PTCDA single crystals [55] (see Table 1). However, for modes above 1,570 cm−1, the situation is reversed and not

Scanning tunneling microscopy and spectroscopy of rubrene on clean and graphene-covered metal surfaces

• Karl Rothe,
• Alexander Mehler,
• Nicolas Néel and
• Jörg Kröger

Beilstein J. Nanotechnol. 2020, 11, 1157–1167, doi:10.3762/bjnano.11.100

• electronically decouple 2,5-bis(3-dodecylthiophen-2-yl)thieno[3,2-b]thiophene from the metal surface [10]. A rich vibronic fine structure was observed in the HOMO spectroscopic signature induced by several fundamental vibrational modes of the molecule together with their higher harmonics and combination

• progression due to a group of molecular vibrational modes with energies hν ≈ 160 meV (h: Planck constant, ν: vibrational frequency). In vibronic progression the molecule is electronically and vibrationally excited from its ground state by an attached charge, i.e., hole or electron. Here, C42H28 is transiently

• ) on a constant background. Therefore, different groups of vibrational modes participate in the vibronic progression of the different frontier orbitals. Within the uncertainty margin the vibrational quantum with energy hν1 ≈ 180 meV is most likely the same mode as that observed for C42H28 on Au(111

Vibration analysis and pull-in instability behavior in a multiwalled piezoelectric nanosensor with fluid flow conveyance

• Sayyid H. Hashemi Kachapi

Beilstein J. Nanotechnol. 2020, 11, 1072–1081, doi:10.3762/bjnano.11.92

• voltage respectively, the values of = 5 and = 0.1 are used. First, the relationship between the DNF and the different MWPENR length-to-radius ratios L/R1 is shown in Figure 2 for three vibrational modes. These results are shown for two cases of surface density corresponding to Table 5 (due to fact the

• (MWCNT). (b) Modeling of a 1…k + 1 tube of a MWCNT as a fluid-conveying nanosensor with surface model. (c) Modeling of the last tube of a MWCNT as a piezoelectric nanosensor with surface/interface model. The surface/interface effects on DNF versus the L/R1 ratio for three vibrational modes. The effects

Monolayers of MoS₂ on Ag(111) as decoupling layers for organic molecules: resolution of electronic and vibronic states of TCNQ

• Asieh Yousofnejad,
• Gaël Reecht,
• Nils Krane,
• Christian Lotze and
• Katharina J. Franke

Beilstein J. Nanotechnol. 2020, 11, 1062–1071, doi:10.3762/bjnano.11.91

• across the MoS2 layer [65]. We now realize that the peak at approx. 640 meV consists of three vibrational modes (at 151, 175, and 206 meV) exhibiting a large Huang–Rhys factor. These modes correspond to in-plane breathing modes of TCNQ (see schemes in Figure 6d–f), which are particularly sensitive to

• experimental (bottom panel) dI/dV spectra at the position indicated by the blue dot in panel (a) with feedback opened at V = 2 V, I = 100 pA, with Vmod = 10 mV. The simulated spectrum is obtained from DFT calculations for all vibrational modes of the TCNQ− molecule with a Huang–Rhys factor higher than 0.01

• unoccupied molecular electronic level. d–f) Visualization of the vibrational modes contributing to the satellite peak. The orange arrows represent the displacement of the atoms involved in these vibrations. Acknowledgements We acknowledge discussions with S. Trishin and J. R. Simon. Funding A. Yousofnejad

Light–matter interactions in two-dimensional layered WSe₂ for gauging evolution of phonon dynamics

• Avra S. Bandyopadhyay,
• Chandan Biswas and
• Anupama B. Kaul

Beilstein J. Nanotechnol. 2020, 11, 782–797, doi:10.3762/bjnano.11.63

• is shown schematically in Figure 4d; here the effect of external stimuli, such as the energy of incoming photons from the laser beam, on the vibrational modes of the atoms in WSe2 is illustrated. The external energy causes damping in the in-plane mode and the out-of-plane A1g mode within the WSe2

• this case the incoming laser power, in the vibrational modes in 2D layered WSe2. (e) The rate of change in τ with respect to T for the mode in 1L, ML and bulk WSe2. (f) A damped harmonic oscillator model is proposed to qualitatively represent the low, moderate and high damping scenarios in the WSe2

Stochastic excitation for high-resolution atomic force acoustic microscopy imaging: a system theory approach

• Edgar Cruz Valeriano,
• José Juan Gervacio Arciniega,
• Christian Iván Enriquez Flores,
• Susana Meraz Dávila,
• Joel Moreno Palmerin,
• Martín Adelaido Hernández Landaverde,
• Yuri Lizbeth Chipatecua Godoy,
• Aime Margarita Gutiérrez Peralta,
• Rafael Ramírez Bon and
• José Martín Yañez Limón

Beilstein J. Nanotechnol. 2020, 11, 703–716, doi:10.3762/bjnano.11.58

• –sample interaction is excited with a white-noise signal. Then, a fast Fourier transform is applied to the deflection signal that comes from the photodiodes of the atomic force microscopy (AFM) equipment. This approach allows for the measurement of several vibrational modes in a single step with high

• though these methods offer reliable measurements, they can only measure one or three resonant vibrational modes with a relative frequency resolution, and in some cases, the involved instrumentation can be very complex [2][10][16][17][19]. This makes the system excitation restricted to purely sinusoidal

Targeted therapeutic effect against the breast cancer cell line MCF-7 with a CuFe₂O₄/silica/cisplatin nanocomposite formulation

• B. Rabindran Jermy,
• Vijaya Ravinayagam,
• Widyan A. Alamoudi,
• Dana Almohazey,
• Hatim Dafalla,
• Lina Hussain Allehaibi,
• Abdulhadi Baykal,
• Muhammet S. Toprak and
• Thirunavukkarasu Somanathan

Beilstein J. Nanotechnol. 2019, 10, 2217–2228, doi:10.3762/bjnano.10.214

• nanoparticles at the pores of HYPS. The FTIR technique was used to confirm the bonding and vibrational modes of copper ferrite with silica (Figure 3). The FTIR spectra of HYPS showed several peaks corresponding to Si–O–Si stretching and vibration, hydroxyl and Si–O bonding around 432 cm−1, 800 cm−1 and between

Improved adsorption and degradation performance by S-doping of (001)-TiO₂

• Xiao-Yu Sun,
• Xian Zhang,
• Xiao Sun,
• Ni-Xian Qian,
• Min Wang and
• Yong-Qing Ma

Beilstein J. Nanotechnol. 2019, 10, 2116–2127, doi:10.3762/bjnano.10.206

• with the (004) crystal face. FTIR spectra were measured for all the samples. Figure 3 shows the results of the samples with RS/Ti = 0, 2 and 5. The positions of the absorption peaks and the corresponding assignments to vibrational modes are listed in Table 2. In contrast to the undoped 1-S0 and 2-S0

• surface-adsorbed SO42− and TiO2 [30][31], (4) the vibrational modes at 1800 and 2515 cm−1 can be attributed to the –COOH group [32][33]; while those at 2850 and 2920 cm−1 can be attributed to the C–H group [34]; the C–OH vibration mode is located at 880 cm−1 [35][36], (5) the vibrational mode at 2138 cm−1

• dispersions, (e, f, g, h) DMPO–•O2− formed in methanol dispersion. The unit cell parameters a, c and the c/a value for S-doped (001)-TiO2 at 250 °C. Position of the FTIR absorption peaks and the corresponding vibrational modes. The chemical states (CSs) of Ti, O and S and the corresponding binding energies

Long-term entrapment and temperature-controlled-release of SF₆ gas in metal–organic frameworks (MOFs)

• Hana Bunzen,
• Andreas Kalytta-Mewes,
• Leo van Wüllen and
• Dirk Volkmer

Beilstein J. Nanotechnol. 2019, 10, 1851–1859, doi:10.3762/bjnano.10.180

• ) vibrational modes in SF6 [32]. To check that the sample crystallinity was preserved, we measured powder XRD patterns before and after the loading (Figure 3). The recorded powder XRD patterns did not reveal any changes in the diffraction peak positions, but there were differences in the peak intensities

High-temperature resistive gas sensors based on ZnO/SiC nanocomposites

• Vadim B. Platonov,
• Marina N. Rumyantseva,
• Alexander S. Frolov,
• Alexey D. Yapryntsev and
• Alexander M. Gaskov

Beilstein J. Nanotechnol. 2019, 10, 1537–1547, doi:10.3762/bjnano.10.151

• of zinc oxide contains an intense broad signal, corresponding to the stretching vibrations of Zn–O bonds (635–400 cm−1). The above spectrum also shows the signals from the multi-phonon vibrational modes of the ZnO lattice (990 and 870 cm−1). In accordance with the literature data, such oscillations

• intensity ratio corresponding to the molar ratio of ZnO and SiC. Any additional vibrational modes do not arise in the FTIR spectra of ZnO/SiC nanocomposites. To reveal the possible interactions between SiC and ZnO nanoparticles, and to shed light on the surface composition of the materials, we used X-ray

Molecular attachment to a microscope tip: inelastic tunneling, Kondo screening, and thermopower

• Rouzhaji Tuerhong,
• Mauro Boero and
• Jean-Pierre Bucher

Beilstein J. Nanotechnol. 2019, 10, 1243–1250, doi:10.3762/bjnano.10.124

• results are summarized in Figure 4c, which clearly evidences the hysteretic behavior. The IETS step energies do not change if the loop is repeated again since they are determined by the vibrational modes of the molecule. However, a different asymmetry in intensity of the spectra may appear for different

Quantification and coupling of the electromagnetic and chemical contributions in surface-enhanced Raman scattering

• Yarong Su,
• Yuanzhen Shi,
• Ping Wang,
• Jinglei Du,
• Markus B. Raschke and
• Lin Pang

Beilstein J. Nanotechnol. 2019, 10, 549–556, doi:10.3762/bjnano.10.56

• as 14 for different vibrational modes studied, yet with no dependence on the kind of metal substrate. Further, for the electromagnetic enhancement ranging from 1 to 106 for the different substrates used we find no correlation between CE and EM effects. We expect this constant chemical enhancement and

• assignment results of the vibrational modes are in agreement with [25]. The ω1 mode is not IR active and only a change in deformation potential would contribute to its possible CE as proposed in [15]. Its out-of-plane ring mode is characterized by a largely only intramolecular motion, minimizing modulation

• from where ρsurf (0.544 nmol/cm2) is the surface coverage of benzenethiol [24], and Ssurf is the size of the laser spot. The results are summarized in Table 1 for the enhancement factors for the three vibrational modes investigated and the four different metal substrates with 633 nm excitation (for 785

Nanocomposite–parylene C thin films with high dielectric constant and low losses for future organic electronic devices

• Marwa Mokni,
• Gianluigi Maggioni,
• Abdelkader Kahouli,
• Sara M. Carturan,
• Walter Raniero and
• Alain Sylvestre

Beilstein J. Nanotechnol. 2019, 10, 428–441, doi:10.3762/bjnano.10.42

• in the plasma-deposited samples, as already pointed out by the XRD analysis, consisting in a decrease of the preferred orientation of parylene nanocrystallites. As a matter of fact, the surrounding chemical environment of any molecule affects the IR activity of its vibrational modes (i.e., the

Sub-wavelength waveguide properties of 1D and surface-functionalized SnO₂ nanostructures of various morphologies

• Venkataramana Bonu,
• Binaya Kumar Sahu,
• Arindam Das,
• Sankarakumar Amirthapandian,
• Sandip Dhara and
• Harish C. Barshilia

Beilstein J. Nanotechnol. 2019, 10, 379–388, doi:10.3762/bjnano.10.37

• + 2B1u + Eg + 4Eu. Among these, B1g, B2g, A1g (non-degenerate modes) and Eg (doubly degenerate mode) are Raman active. A2u and Eu modes are infrared (IR) active, and vibrational modes belonging to A2g and B1u symmetries are silent [26]. Raman modes at 633 and 775 cm−1 of the NWs are assigned to A1g and

Uniform Sb₂S₃ optical coatings by chemical spray method

• Jako S. Eensalu,
• Atanas Katerski,
• Erki Kärber,
• Ilona Oja Acik,
• Arvo Mere and
• Malle Krunks

Beilstein J. Nanotechnol. 2019, 10, 198–210, doi:10.3762/bjnano.10.18

• spectroscopy provides quantitative and qualitative information on the vibrational modes in solids. The wide Raman band centered at 290 cm−1 [12][16] associated with metastibnite, i.e., amorphous Sb2S3, is characteristic of as-deposited orange colored (photograph in Supporting Information File 1, Figure S1

Zn/F-doped tin oxide nanoparticles synthesized by laser pyrolysis: structural and optical properties

• Florian Dumitrache,
• Iuliana P. Morjan,
• Elena Dutu,
• Ion Morjan,
• Claudiu Teodor Fleaca,
• Monica Scarisoreanu,
• Alina Ilie,
• Marius Dumitru,
• Cristian Mihailescu,
• Adriana Smarandache and
• Gabriel Prodan

Beilstein J. Nanotechnol. 2019, 10, 9–21, doi:10.3762/bjnano.10.2

• does not include the 1300–1500 cm−1 window. The carbon Raman component has not been approached in this analysis due to low amorphous C content in the samples, which, combined with their photoluminescent feature, makes the Raman C vibrational modes too weak to be clearly distinguished in the measured