Upscaling the urea method synthesis of CoAl layered double hydroxides

• Camilo Jaramillo-Hernández,
• Víctor Oestreicher,
• Martín Mizrahi and
• Gonzalo Abellán

Beilstein J. Nanotechnol. 2023, 14, 927–938, doi:10.3762/bjnano.14.76

• spin-coated on a Si wafer (3000 rpm, 40 s), washed with ethanol and dried afterward. For AFM, the samples were diluted in ethanol and drop-cast on a Si/SiO2 wafer. Si/SiO2 wafers were washed by spin-coating ten droplets of acetone and ten droplets of isopropanol prior to sample deposition. Scanning

Silver-based SERS substrates fabricated using a 3D printed microfluidic device

• Phommachith Sonexai,
• Minh Van Nguyen,
• Bui The Huy and
• Yong-Ill Lee

Beilstein J. Nanotechnol. 2023, 14, 793–803, doi:10.3762/bjnano.14.65

• a substrate [23]. This procedure typically requires a clean room and expensive facilities such as a photolithography machine, a spin-coater, and photoresist agents, as well as long processing times and well-trained technical staff. Additionally, the photolithography process is limited to planar

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

• crossover between both regimes. To exemplify our results, we employ a helical geometry. Helical molecular wires have sparked a lot of attention because of reports of spin-selective transport [16][17][18]. This phenomenon falls under the umbrella term “chirality-induced spin selectivity (CISS)”. The full

• ) Electrons carry spin angular momentum, which couples with the orbital momentum by spin–orbit interaction. Thus, reflection accompanied by a spin flip can induce angular momentum transfer. Conclusion We have investigated the classical dynamics of a molecular rotor under a particle current. The molecule was

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

• with it and lowering its effectiveness [39][40][41]. The shift of the fluorescence spectrum to longer wavelengths with respect to the excitation spectrum is called the Stokes shift. Fluorescence relaxation processes are all spin-neutral (spin-allowed), and the electron’s spin orientation is always

• preserved. In contrast, phosphorescence is a separate phenomenon. The electron spin is inverted (spin-forbidden) as a result of a rapid (femto- to microseconds) intersystem crossing from a singlet S1 to an energetically advantageous excited triplet T1 state. After a long delay (a few milliseconds to a few

• protected by a wider radial expansion of its filled 5s2 and 5p6 subshells, which create 4f orbitals as inner orbitals. As a result, the spin–orbit interaction, which is the basis for their intriguing photophysical features, dominates the extremely minor and less significant crystal field influence on the

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

• oxidized carbon forms C–O–C/C–OH (286.1 eV) and O–C–O (289 eV), which probably formed during the synthesis [42]. No C 1s peak at ca. 281 eV (Ti–C bond) was observed, suggesting that carbon does not modify the TiO2 phase [43]. Figure 4c shows the Ti 2p peaks, where the Ti4+ 2p3/2 and Ti4+ 2p1/2 spin–orbital

Molecular nanoarchitectonics: unification of nanotechnology and molecular/materials science

• Katsuhiko Ariga

Beilstein J. Nanotechnol. 2023, 14, 434–453, doi:10.3762/bjnano.14.35

• tip was brought close enough to obtain a single-atom conductance gap, it was retracted and silicon atoms were removed. A perpendicular magnetic field was applied to explore physical phenomena such as Kondo resonance. The nanoarchitectonics of magnetic topological states due to spin polarization in

• structure, magnetism, and charge and spin transport, are very interesting for nanoscale physics. In particular, nanostructures with zigzag edges are expected to have spin-polarized electronic edge states. The synthesized structures could play a leading role in graphene-based spintronics. In addition to

Bismuth-based nanostructured photocatalysts for the remediation of antibiotics and organic dyes

• Akeem Adeyemi Oladipo and
• Faisal Suleiman Mustafa

Beilstein J. Nanotechnol. 2023, 14, 291–321, doi:10.3762/bjnano.14.26

Spin dynamics in superconductor/ferromagnetic insulator hybrid structures with precessing magnetization

• Yaroslav V. Turkin and
• Nataliya Pugach

Beilstein J. Nanotechnol. 2023, 14, 233–239, doi:10.3762/bjnano.14.22

• Yaroslav V. Turkin Nataliya Pugach HSE University, Moscow 101000, Russia Vernadsky Crimean Federal University, Simferopol 295007 10.3762/bjnano.14.22 Abstract The main goal of the present work is the description of the dynamics of spin current and induced magnetization inside a superconducting

• film S that is in contact with a ferromagnetic insulator layer FI. Spin current and induced magnetization are calculated not only at the interface of the S/FI hybrid structure, but also inside the superconducting film. The new and interesting predicted effect is the frequency dependence of the induced

• magnetization with a maximum appearing at high temperatures. It is also shown that the increase of the magnetization precession frequency can drastically change the spin distribution of quasiparticles at the S/FI interface. Keywords: ferromagnetic resonance; proximity effect; superconducting spintronics

Structural, optical, and bioimaging characterization of carbon quantum dots solvothermally synthesized from o-phenylenediamine

• Zoran M. Marković,
• Milica D. Budimir,
• Martin Danko,
• Dušan D. Milivojević,
• Pavel Kubat,
• Danica Z. Zmejkoski,
• Vladimir B. Pavlović,
• Marija M. Mojsin,
• Milena J. Stevanović and
• Biljana M. Todorović Marković

Beilstein J. Nanotechnol. 2023, 14, 165–174, doi:10.3762/bjnano.14.17

• (Shimadzu, Japan). Reactive oxygen species (ROS) production Singlet oxygen generation For EPR measurements, a Spectrometer MiniScope 300, Magnettech, Berlin, Germany was used. The instrument was operating at a nominal frequency of 9.5 GHz. 2,2,6,6-tetramethylpiperidine (TEMP) was used as a spin trap. The

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

• –ferromagnet–superconductor (SFS) structures have been predicted and calculated [26]. A quantitative study of the density of states (DOS) in bulk superconductor/ferromagnetic (S/F) bilayers in the diffusive limit has been presented. In addition, an analysis of the dependencies of DOS on magnetic and spin–orbit

Cooper pair splitting controlled by a temperature gradient

• Dmitry S. Golubev and
• Andrei D. Zaikin

Beilstein J. Nanotechnol. 2023, 14, 61–67, doi:10.3762/bjnano.14.7

• temperature gradient across our device. In addition, voltages V1 and V2 can be applied to two normal leads, as shown in Figure 2. The Hamiltonian of this structure can be chosen in the form where are the Hamiltonians of two normal leads, denote creation and annihilation operators for an electron with a spin

• integrals are taken over the contact areas , and tr(x) denote coordinate- and spin-independent tunneling amplitudes. Let us denote the probability for N1 and N2 electrons to be transferred, respectively, through the junctions 1 and 2 during the observation time t as Pt(N1,N2). Introducing the so-called

Upper critical magnetic field in NbRe and NbReN micrometric strips

• Zahra Makhdoumi Kakhaki,
• Antonio Leo,
• Federico Chianese,
• Loredana Parlato,
• Giovanni Piero Pepe,
• Angela Nigro,
• Carla Cirillo and
• Carmine Attanasio

Beilstein J. Nanotechnol. 2023, 14, 45–51, doi:10.3762/bjnano.14.5

• Zahra Makhdoumi Kakhaki Antonio Leo Federico Chianese Loredana Parlato Giovanni Piero Pepe Angela Nigro Carla Cirillo Carmine Attanasio Dipartimento di Fisica “E. R. Caianiello”, Università degli Studi di Salerno, I-84084 Fisciano (Sa), Italy CNR-SPIN, c/o Università degli Studi di Salerno, I

• 0.13 ≤ x ≤ 0.38 crystallizes in the non-centrosymmetric Ti5Re24-type structure with the space group (No. 217) [9][10][11][12]. This non-centrosymmetric nature of the material leads to intriguing and unconventional physical properties such as the time-reversal symmetry breaking observed with muon-spin

• superconductivity and both contribute to the behavior of Hc2(T), namely the orbital and the paramagnetic effect. While the former is due to the Lorentz force acting on electrons of the Cooper pairs with opposite momentum, the latter is related to splitting of the spin-singlet pairs because of the Zeeman effect

Gap-directed chemical lift-off lithographic nanoarchitectonics for arbitrary sub-micrometer patterning

• Chang-Ming Wang,
• Hong-Sheng Chan,
• Chia-Li Liao,
• Che-Wei Chang and
• Wei-Ssu Liao

Beilstein J. Nanotechnol. 2023, 14, 34–44, doi:10.3762/bjnano.14.4

• important parameters to modulate (Scheme 1B). H is regulated by the photoresist mold in which the PDMS resin is cured in, which in turn can be controlled by spin coating speed and photoresist concentration. On the other hand, D and W are both determined by the photomask used. It is important to note that

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

• , Academiei 3/3, Chisinau 2028, Moldova 10.3762/bjnano.14.3 Abstract The present paper considers a mathematical model describing the time evolution of spin states and magnetic properties of a nanomaterial. We present the results of two variants of nanosystem simulations. In the first variant, cobalt with a

• simulations, after pre-correction in the initial time stages, the value of spin temperature stabilized and tended to the average value. Also, the change in spin temperature occurred near the average value. The system with a real structure had a variable spin temperature compared to that of a system with an

• 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

Photoelectrochemical water oxidation over TiO₂ nanotubes modified with MoS₂ and g-C₃N₄

• Phuong Hoang Nguyen,
• Thi Minh Cao,
• Tho Truong Nguyen,
• Hien Duy Tong and
• Viet Van Pham

Beilstein J. Nanotechnol. 2022, 13, 1541–1550, doi:10.3762/bjnano.13.127

• solution. Next, 0.2 mL of either of these solutions was used to coat the surface of TNAs via spin coating. The samples were denoted as MoS2/TNAs and g-C3N4/TNAs. Then, the samples were annealed in nitrogen gas at 60 °C for 12 h to obtain a stable electrode for the investigation processes. Characterization

Structural studies and selected physical investigations of LiCoO₂ obtained by combustion synthesis

• Monika Michalska,
• Paweł Ławniczak,
• Tomasz Strachowski,
• Adam Ostrowski and
• Waldemar Bednarski

Beilstein J. Nanotechnol. 2022, 13, 1473–1482, doi:10.3762/bjnano.13.121

• simulation of the experimental spectra, we obtained the parameters of the spectroscopic coefficients of the g-tensor for the two Ni3+ ions, which are presented in Figure 8. The spin-Hamiltonian parameters indicate that complex Ni(I) has axial symmetry and complex Ni(II) is non-axial. The values of the

Density of states in the presence of spin-dependent scattering in SF bilayers: a numerical and analytical approach

• Tairzhan Karabassov,
• Valeriia D. Pashkovskaia,
• Nikita A. Parkhomenko,
• Anastasia V. Guravova,
• Elena A. Kazakova,
• Boris G. Lvov,
• Alexander A. Golubov and
• Andrey S. Vasenko

Beilstein J. Nanotechnol. 2022, 13, 1418–1431, doi:10.3762/bjnano.13.117

• 10.3762/bjnano.13.117 Abstract We present a quantitative study of the density of states (DOS) in SF bilayers (where S is a bulk superconductor and F is a ferromagnetic metal) in the diffusive limit. We solve the quasiclassical Usadel equations in the structure considering the presence of magnetic and spin

• behavior of DOS dependencies on magnetic and spin–orbit scattering times is discussed. Keywords: density of states; Josephson junctions; proximity effect; superconductivity; superconductor/ferromagnet hybrid nanostructures; Introduction It is well-known that superconductivity can be induced in a non

• studied areas of research, including the thermospin [59][60] and thermoelectric [61][62][63][64][65][66] effects, spin and heat valves [67][68][69][70][71][72][73][74][75], as well as nanoscale refrigerators [76][77][78]. Presently, the DOS structure at the free edge of a normal metal layer in NS bilayers

Double-layer symmetric gratings with bound states in the continuum for dual-band high-Q optical sensing

• Chaoying Shi,
• Jinhua Hu,
• Xiuhong Liu,
• Junfang Liang,
• Jijun Zhao,
• Haiyan Han and
• Qiaofen Zhu

Beilstein J. Nanotechnol. 2022, 13, 1408–1417, doi:10.3762/bjnano.13.116

• substrate in an adhesive bonding process. Next, another bare SOI chip was bonded to the previously fabricated recipient substrate as a donor substrate, which is spin-coated using SU-8 on both the recipient and donor substrates. The silicon handle of the donor substrate is then removed by mechanical

LED-light-activated photocatalytic performance of metal-free carbon-modified hexagonal boron nitride towards degradation of methylene blue and phenol

• Nirmalendu S. Mishra and
• Pichiah Saravanan

Beilstein J. Nanotechnol. 2022, 13, 1380–1392, doi:10.3762/bjnano.13.114

• attributed to the unpaired electrons. The MBN-80 sample shows the highest EPR spin intensity, meaning greater concentration of unpaired electrons along with higher electron delocalization which are highly favourable towards enhanced separation and generation of charge carriers [26][27]. Additionally, surface

Enhanced electronic transport properties of Te roll-like nanostructures

• E. R. Viana,
• N. Cifuentes and
• J. C. González

Beilstein J. Nanotechnol. 2022, 13, 1284–1291, doi:10.3762/bjnano.13.106

• calculations of the band structure of t-Te have been revealed that the strong spin–orbit coupling breaks the fourfold degeneracy of the valence band at the H point of the Brillouin zone, creating two non-degenerated H4 and H5 bands and a doubly degenerated H6 band. The H4 and H5 bands contribute to the

Design of surface nanostructures for chirality sensing based on quartz crystal microbalance

• Yinglin Ma,
• Xiangyun Xiao and
• Qingmin Ji

Beilstein J. Nanotechnol. 2022, 13, 1201–1219, doi:10.3762/bjnano.13.100

• group of the analyte and pyridyl sites in MIPs. The MIP-based selectors on the QCM surface can be achieved not only by in situ polymerization but also by using premade MIP nanoparticles. Krozer et al. reported the fabrication of QCM chiral sensors by physically entrapping MIP nanoparticles into a spin

• of novel chiral sensing systems from the viewpoints of structural features and functionalities. The induced changes of the electron spin orientation in metals may cause charge redistribution in chiral molecules and manifest an enantiospecific preference. Paltiel and Naaman et al. first elucidated

• that the induced spin polarization may affect enantiorecognition under an external field. They experimentally showed that the interaction of chiral molecules with a perpendicularly magnetized substrate was enantiospecific (Figure 12) [145]. The spin-specific interactions between magnetic metals and

Application of nanoarchitectonics in moist-electric generation

• Jia-Cheng Feng and
• Hong Xia

Beilstein J. Nanotechnol. 2022, 13, 1185–1200, doi:10.3762/bjnano.13.99

• spin-coating, lyophilization, and electrostatic spinning. These devices using polyethylene derivatives generate high output voltages and can be fabricated at a large scale, which gives them a great application potential. For example, FEP devices generated a high output voltage of up to 160 V with

Nonlinear features of the superconductor–ferromagnet–superconductor φ₀ Josephson junction in the ferromagnetic resonance region

• Aliasghar Janalizadeh,
• Ilhom R. Rahmonov,
• Sara A. Abdelmoneim,
• Yury M. Shukrinov and
• Mohammad R. Kolahchi

Beilstein J. Nanotechnol. 2022, 13, 1155–1166, doi:10.3762/bjnano.13.97

• characteristics of a φ0 Josephson junction in the ferromagnetic resonance region. We show that at small values of the system parameters damping, spin–orbit interaction, and Josephson-to-magnetic energy ratio, the magnetic dynamics is reduced to the dynamics of a scalar Duffing oscillator driven by the Josephson

• simulations. The role of the DC superconducting current and the state with negative differential resistance (NDR) in the I–V characteristics were not clarified. Also, the effects of the Josephson-to-magnetic energy ratio and the spin–orbit coupling (SOC) were not investigated at that time. In the present

• demonstrate the Duffing oscillator features in the small parameter regime. Effects of the Josephson-to-magnetic energy ratio, and the spin–orbit coupling on the ADD, referred to earlier as the α-effect [14] are demonstrated. By deriving the formula that couples the DC superconducting current and maximal

Rapid fabrication of MgO@g-C₃N₄ heterojunctions for photocatalytic nitric oxide removal

• Minh-Thuan Pham,
• Duyen P. H. Tran,
• Xuan-Thanh Bui and
• Sheng-Jie You

Beilstein J. Nanotechnol. 2022, 13, 1141–1154, doi:10.3762/bjnano.13.96

• conversion, DeNOx index, apparent quantum efficiency, trapping tests, and electron spin resonance measurements were carried out to understand the photocatalytic mechanism of the materials. The high reusability of the MgO@g-C3N4 heterojunction was shown by a five-cycle recycling test. This study provides a

• test, electron spin resonance (ESR) measurements, and other methods. This work might be helpful for the development of MgO@g-C3N4 heterojunction materials. Experimental Synthesis of MgO/g-C3N4 For the synthesis of g-C3N4, 30 g of urea was ground manually for 30 min and then placed in a 100 mL crucible

Biomimetic chitosan with biocomposite nanomaterials for bone tissue repair and regeneration

• Se-Kwon Kim,
• Sesha Subramanian Murugan,
• Pandurang Appana Dalavi,
• Sebanti Gupta,
• Sukumaran Anil,
• Gi Hun Seong and
• Jayachandran Venkatesan

Beilstein J. Nanotechnol. 2022, 13, 1051–1067, doi:10.3762/bjnano.13.92

• antibacterial activity was observed against Staphylococcus aureus and Escherichia coli [95]. Melatonin-loaded TiO2 nanotubes were synthesized by Lai et al. (2017). Subsequently, using a spin-based layer-by-layer approach, chitosan and gelatin-based films were applied. Further, an in vitro cell interaction study