Heat-induced morphological changes in silver nanowires deposited on a patterned silicon substrate

• Elyad Damerchi,
• Sven Oras,
• Edgars Butanovs,
• Allar Liivlaid,
• Mikk Antsov,
• Boris Polyakov,
• Annamarija Trausa,
• Veronika Zadin,
• Andreas Kyritsakis,
• Loïc Vidal,
• Karine Mougin,
• Siim Pikker and
• Sergei Vlassov

Beilstein J. Nanotechnol. 2024, 15, 435–446, doi:10.3762/bjnano.15.39

• leading to heat-induced fragmentation of Ag NWs as the mechanism of stress release, and could potentially involve recrystallization into single crystals. To test this hypothesis, we repeated experiments on TEM grids with subsequent observation of the crystal structure via TEM. It was found that the

Investigating ripple pattern formation and damage profiles in Si and Ge induced by 100 keV Ar⁺ ion beam: a comparative study

• Indra Sulania,
• Harpreet Sondhi,
• Tanuj Kumar,
• Sunil Ojha,
• G R Umapathy,
• Ambuj Mishra,
• Ambuj Tripathi,
• Richa Krishna,
• Devesh Kumar Avasthi and
• Yogendra Kumar Mishra

Beilstein J. Nanotechnol. 2024, 15, 367–375, doi:10.3762/bjnano.15.33

• The RBS-c is an effective characterization technique for the estimation of amorphous depth and defect concentration in implanted single crystals. The RBS-c analysis for point defects shows a linear behaviour in defect density with ion fluence. The formation of highly dense dislocation loops beyond the

Exploring disorder correlations in superconducting systems: spectroscopic insights and matrix element effects

• Vyacheslav D. Neverov,
• Alexander E. Lukyanov,
• Andrey V. Krasavin,
• Alexei Vagov,
• Boris G. Lvov and
• Mihail D. Croitoru

Beilstein J. Nanotechnol. 2024, 15, 199–206, doi:10.3762/bjnano.15.19

• quasi-one-dimensional single crystals composed of weakly bound MoSe chains and sodium atoms [14]. Similarly, experiments with TaS2 monolayers have demonstrated an anomalous boost in superconductivity, which is also attributed to a presence of significant structural disorder [15]. Disorder-related

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

• CoAl-based LDH synthesis through an ARR method had been demonstrated, morphological aspects were addressed by means of scanning electron microscopy (SEM), transmission electron microscopy (TEM), and atomic force microscopy (AFM) (Figure 4 and Figure 5). For reference x1, well-defined hexagonal single

• crystals of around 3.7 ± 1.0 µm are observed, in good agreement with [13]. Interestingly, pure CoAl-based LDH scale-up samples exhibit a reduction of around 45% in size and a lack of sharp edges, regardless of the synthesis approach. In the case of mass scale-up protocols, these differences can arise from

Optimizing PMMA solutions to suppress contamination in the transfer of CVD graphene for batch production

• Chun-Da Liao,
• Andrea Capasso,
• Tiago Queirós,
• Telma Domingues,
• Fatima Cerqueira,
• Nicoleta Nicoara,
• Jérôme Borme,
• Paulo Freitas and
• Pedro Alpuim

Beilstein J. Nanotechnol. 2022, 13, 796–806, doi:10.3762/bjnano.13.70

• single crystals using PMMA with different weight percentages and AMWs (Figure 1a–g). As detailed in the description of the graphene transfer process, after the Cu etching process (Supporting Information File 1, Figure S1b, step II), the PMMA-coated graphene is rinsed in a DI water bath at least three

• Gaussian fits were performed to isolate the trends in the resistance distributions. Examination of PMMA residues after the transfer of graphene single crystals using PMMA at various weight percentages and AMWs. (a, b) A1, (c) C1, (d) A3, (e) C3, and (f) C4. The white spots in the images are PMMA residues

• B2 mixture yields more consistent electric properties of the graphene channel, thanks to a homogenous and reproducible process. Such characteristics ultimately translate into a consistent sensor performance, which is pivotal for industrial fabrication. Conclusion Monolayer graphene films and single

Recent advances in nanoarchitectures of monocrystalline coordination polymers through confined assembly

• Lingling Xia,
• Qinyue Wang and
• Ming Hu

Beilstein J. Nanotechnol. 2022, 13, 763–777, doi:10.3762/bjnano.13.67

• first discuss the crystallization of coordination polymer single crystals inside confined liquid networks or on substrates through assembly of nodes and ligands. Then, we discuss assembly of preformed coordination polymer single crystals inside confined liquid networks or on substrates. In each part, we

• discuss the properties of the coordination polymer single crystals as well as their performance in energy, environmental, and biomedical applications. Keywords: applications; assembly; coordination polymer; metal-organic frameworks; nanoarchitectonics; Introduction Coordination polymers are hybrid

• materials with infinite structures formed by assembly of metal or metal-based clusters and molecular ligands. The structures of the coordination polymers are generally determined by analyzing single crystals [1][2][3][4]. With the development of suitable synthetic strategies, various kinds of

Design aspects of Bi₂Sr₂CaCu₂O_8+δ THz sources: optimization of thermal and radiative properties

• Mikhail M. Krasnov,
• Natalia D. Novikova,
• Roger Cattaneo,
• Alexey A. Kalenyuk and
• Vladimir M. Krasnov

Beilstein J. Nanotechnol. 2021, 12, 1392–1403, doi:10.3762/bjnano.12.103

• devices: self-heating and low RPE caused by impedance mismatch. We presented numerical simulations of thermal and radiative properties of Bi-2212 THz sources based on conventional large single crystals and needle-like whiskers. Simulations are performed for various geometrical configurations and

Chemical vapor deposition of germanium-rich CrGe_x nanowires

• Vladislav Dřínek,
• Stanislav Tiagulskyi,
• Roman Yatskiv,
• Jan Grym,
• Radek Fajgar,
• Věra Jandová,
• Martin Koštejn and
• Jaroslav Kupčík

Beilstein J. Nanotechnol. 2021, 12, 1365–1371, doi:10.3762/bjnano.12.100

• diagram [2] and Gibb’s energies [3], were determined. In other works, the crystallographic phases Cr3Ge, Cr5Ge3, Cr11Ge8, CrGe, and Cr11Ge19 were synthetized using chemical vapor transport [4]. Also, Cr11Ge19 in the form of large single crystals was obtained using a two-zone vertical gradient freeze

Influence of electrospray deposition on C₆₀ molecular assemblies

• Antoine Hinaut,
• Sebastian Scherb,
• Sara Freund,
• Zhao Liu,
• Thilo Glatzel and
• Ernst Meyer

Beilstein J. Nanotechnol. 2021, 12, 552–558, doi:10.3762/bjnano.12.45

• ) single crystals (Mateck GmbH) were prepared under UHV conditions by several cycles of Ar+ sputtering and annealing at 750 K. KBr(001) crystals (Mateck GmbH) were prepared either by cleavage in air and quick introduction in UHV or by cleavage under UHV conditions. Subsequently, annealing at 350 K for 2 h

Interface interaction of transition metal phthalocyanines with strontium titanate (100)

• Reimer Karstens,
• Thomas Chassé and
• Heiko Peisert

Beilstein J. Nanotechnol. 2021, 12, 485–496, doi:10.3762/bjnano.12.39

• TMPcs allow for the study of both the influence of the ionization potential and the central metal atom on the properties of interfaces with differently prepared STO surfaces. Experimental Niobium-doped strontium titanate (100) (Nb:STO) single crystals were purchased from MaTeck GmbH (Jülich, Germany; 10

• function, as determined from photoemission, was close to 3.9 eV for all STO single crystals prepared according to preparation I, indicating a mixed surface termination, likely with a slightly dominant contribution of SrO. In contrast, for preparation II, we obtained work functions between 3.93 eV

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

• of Cu3Au, spherical nanoparticles well separated in space were obtained with an average size of 1.9 ± 0.7 nm [3]. The maximum possible cluster size was 5.5 nm. The nanoparticles were single crystals with the face-centered cubic (FCC) structure displayed along the [110] axis and their lattice

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

• 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

• cannot be neglected. We note that these values are slightly larger than those measured for PTCDA single crystals [55] or thick films [43]. 2.2.2 Temperature induced changes in the Raman spectra: The unique behavior of the RB mode can also be seen in its dependency on the preparation temperature both for

Magnetic-field-assisted synthesis of anisotropic iron oxide particles: Effect of pH

• Andrey V. Shibaev,
• Petr V. Shvets,
• Darya E. Kessel,
• Roman A. Kamyshinsky,
• Anton S. Orekhov,
• Sergey S. Abramchuk,
• Alexei R. Khokhlov and
• Olga E. Philippova

Beilstein J. Nanotechnol. 2020, 11, 1230–1241, doi:10.3762/bjnano.11.107

• obtained at a slightly acidic pH. Thus, we determined the optimum pH for nanorod preparation. High-resolution transmission electron microscopy (HRTEM) results showed that the synthesized nanorods were single crystals formed by the magnetic-field-assisted growth of small nanocrystals, whereas some amount of

• crystalline structure of the nanoparticles and their growth mechanism under magnetic field exposure, HRTEM images were obtained. Figure 7 shows HRTEM images of different nanorods. It is seen that the synthesized nanorods are single crystals. From the interatomic distances, a few magnetite crystal planes can

Hybridization vs decoupling: influence of an h-BN interlayer on the physical properties of a lander-type molecule on Ni(111)

• Maximilian Schaal,
• Takumi Aihara,
• Marco Gruenewald,
• Felix Otto,
• Jari Domke,
• Roman Forker,
• Hiroyuki Yoshida and
• Torsten Fritz

Beilstein J. Nanotechnol. 2020, 11, 1168–1177, doi:10.3762/bjnano.11.101

• on metal single crystals are the high crystal quality, chemical inertness and the wide band gap of approx. 6 eV, which apparently renders h-BN a promising candidate for the decoupling of highly ordered molecular films [9][10]. However, indications for a significant hybridization of organic molecules

Excitonic and electronic transitions in Me–Sb₂Se₃ structures

• Nicolae N. Syrbu,
• Victor V. Zalamai,
• Ivan G. Stamov and
• Stepan I. Beril

Beilstein J. Nanotechnol. 2020, 11, 1045–1053, doi:10.3762/bjnano.11.89

• (A, B, C, and D) were observed in the optical spectra of the Sb2Se3 single crystals and in the photoelectric spectra of the Me–Sb2Se3 structures. The exciton parameters, such as the ground (n = 1) and excited (n = 2) state positions and the binding energy (Ry), were determined. The effective mass of

• single crystals was carried out by our group [24]. Since Sb2S3 and Sb2Se3 have a similar band structure, the four excitonic states (A, B, C and D) were also obtained for the Sb2S3 single crystals. Based in our previous work [24], the exciton binding energies, valence band parameters, valence band

• splitting, as well as the effective mass of electrons and holes were estimated for Sb2Se3 single crystals. Experimental Bulk Sb2Se3 crystals were obtained by fusion (T ≈ 700–730 °C) of antimony (Sb) and selenium (Se) taken in the stoichiometric ratio. The growth method used for Sb2S3 [24] was adapted here

Implementation of data-cube pump–probe KPFM on organic solar cells

• Benjamin Grévin,
• Olivier Bardagot and
• Renaud Demadrille

Beilstein J. Nanotechnol. 2020, 11, 323–337, doi:10.3762/bjnano.11.24

• -based devices, hybrid perovskite thin films and single crystals as well as type-II van der Waals heterojunctions based on transition metal dichalcogenides. Experimental Nc-AFM and pp-KPFM Noncontact-AFM (nc-AFM) experiments were performed with a ScientaOmicron VT-AFM setup in UHV at room temperature (RT

Abrupt elastic-to-plastic transition in pentagonal nanowires under bending

• Sergei Vlassov,
• Magnus Mets,
• Boris Polyakov,
• Jianjun Bian,
• Leonid Dorogin and
• Vahur Zadin

Beilstein J. Nanotechnol. 2019, 10, 2468–2476, doi:10.3762/bjnano.10.237

• ]. In this model, the pentagonal NW was composed of five triangular prism-shaped domains with vertex angle of 72°. These domains represent the FCC single crystals. Each domain was assigned an elasticity matrix of Ag or Au corresponding to their crystal structure to account for structural anisotropy. The

Mobility of charge carriers in self-assembled monolayers

• Zhihua Fu,
• Tatjana Ladnorg,
• Hartmut Gliemann,
• Alexander Welle,
• Asif Bashir,
• Michael Rohwerder,
• Qiang Zhang,
• Björn Schüpbach,
• Andreas Terfort and
• Christof Wöll

Beilstein J. Nanotechnol. 2019, 10, 2449–2458, doi:10.3762/bjnano.10.235

• ]. Domain boundaries, contaminations and defects have a pronounced, negative effect on charge carrier mobility. This fact calls for measurements on low-defect density samples, preferentially macroscopic single crystals, to determine the intrinsic mobilities. This approach, however, is difficult due to the

• size. In the present study, we used PAT protected with a thioester group to fabricate OSC-based SAMs. Anthracene is one of the best-studied organic semiconductor molecules, and numerous studies on charge-transport within single-crystals made from this compound have been reported [31]. A high mobility

• resistance, Rlat to the charge carrier mobility of anthracene and the charge carrier density N using the relation Here, l denotes the length of the current path, and A the cross-section. Using an average e-mobility in anthracene single crystals of 1 cm2/V s at 300 K [42], and a value of l/A of 1 nm−1, we

Review of advanced sensor devices employing nanoarchitectonics concepts

• Katsuhiko Ariga,
• Tatsuyuki Makita,
• Masato Ito,
• Taizo Mori,
• Shun Watanabe and
• Jun Takeya

Beilstein J. Nanotechnol. 2019, 10, 2014–2030, doi:10.3762/bjnano.10.198

• . Sensors for chemical substances Mainly due to the high demand to solve environmental problems, vapor sensors and gas-phase chemical sensors have been actively researched. Tang and co-workers accomplished drastic improvement of sensitivity of H2S gas detection by mechanical deformation of ultrathin single

• crystals of dinaphtho[3,4-d:3’,4’-d’]benzo[1,2-b:4,5-b’]dithiophene in organic field effect transistors [85] (Figure 2). At the tensile state of the crystals, the sensitivity to H2S gas at 1 ppm increased by 400% as compared to the original unstressed state. Upon exposure of the sensor crystals to H2S gas

Remarkable electronic and optical anisotropy of layered 1T’-WTe₂ 2D materials

• Qiankun Zhang,
• Rongjie Zhang,
• Jiancui Chen,
• Wanfu Shen,
• Chunhua An,
• Xiaodong Hu,
• Mingli Dong,
• Jing Liu and
• Lianqing Zhu

Beilstein J. Nanotechnol. 2019, 10, 1745–1753, doi:10.3762/bjnano.10.170

• novel device concepts by utilizing its angle-resolved and wavelength-dependent properties. Methods Exfoliation and characterization of 1T’-WTe2 flakes The 1T’-WTe2 single crystals were purchased from XianFeng Nano Corporation. A blue film was used to exfoliate 1T’-WTe2 onto the N++-doped Si substrate

Kelvin probe force microscopy of the nanoscale electrical surface potential barrier of metal/semiconductor interfaces in ambient atmosphere

• Petr Knotek,
• Tomáš Plecháček,
• Jan Smolík,
• Petr Kutálek,
• Filip Dvořák,
• Milan Vlček,
• Jiří Navrátil and
• Čestmír Drašar

Beilstein J. Nanotechnol. 2019, 10, 1401–1411, doi:10.3762/bjnano.10.138

• crystals of 10–20 mm in length, 3–6 mm in width and up to 3 mm in thickness [31]. The surface of freshly cleaved layered Bi2Se3 single crystals was used as a substrate. The samples for the AFM measurement, Au nanoparticles (NPs) and thin films of gold or molybdenum, were prepared via DC sputtering in a SEM

• obtained from Sigma-Aldrich, i.e., 5N Bi and 5N Se. The crystal growth was performed by cooling in a horizontal furnace from 1073 K to 823 K at a rate of 6 K per hour. The crystals were then annealed at 823 K for 350 h and quenched in air. This free-melt crystallization (FMC) procedure produces single

Gas sensing properties of individual SnO₂ nanowires and SnO₂ sol–gel nanocomposites

• Alexey V. Shaposhnik,
• Dmitry A. Shaposhnik,
• Sergey Yu. Turishchev,
• Olga A. Chuvenkova,
• Stanislav V. Ryabtsev,
• Alexey A. Vasiliev,
• Xavier Vilanova,
• Francisco Hernandez-Ramirez and
• Joan R. Morante

Beilstein J. Nanotechnol. 2019, 10, 1380–1390, doi:10.3762/bjnano.10.136

• in VLS grown single crystals of SnO2 nanowires than in calcinated and partially disoriented particles in powder samples. In the SnO2 powder sample, a decrease is observed between the main Sn M4,5 XANES spectrum maxima and the more developed "vacancy" feature (≈487 eV). This smearing of the fine

• structure distribution of the XANES O K spectra generally confirms the information obtained from tin absorption edge analysis. The relatively wider O K XANES spectra for the nanopowder in comparison to the SnO2 nanowire sample is caused by the better atomic ordering in wire-like single crystals and the less

• nanowires (Figure 7) consist of single crystals. These crystals have a very large surface, which can be similar to natural tin dioxide (see XPS data). At the same time, it is possible to assume the formation of core–shell structures in the case of SnO2 powder samples. Due to their special formation process

Tailoring the magnetic properties of cobalt ferrite nanoparticles using the polyol process

• Malek Bibani,
• Romain Breitwieser,
• Alex Aubert,
• Vincent Loyau,
• Silvana Mercone,
• Souad Ammar and
• Fayna Mammeri

Beilstein J. Nanotechnol. 2019, 10, 1166–1176, doi:10.3762/bjnano.10.116

• the XRD and TEM measurements, we have deduced the average diameter of the produced particles, assuming them to be almost spherical single crystals uniform in size. Moreover, from TEM images, we can evaluate the morphology developed by the NPs. In the stoichiometric samples, the nanoparticles obtained

Magnetic field-assisted assembly of iron oxide mesocrystals: a matter of nanoparticle shape and magnetic anisotropy

• Julian J. Brunner,
• Marina Krumova,
• Helmut Cölfen and
• Elena V. Sturm (née Rosseeva)

Beilstein J. Nanotechnol. 2019, 10, 894–900, doi:10.3762/bjnano.10.90

• hot research topics nowadays [1][2][3][4][5][6][7]. One reason is that their properties can strongly differ from the physical and chemical properties of their corresponding bulk material [8][9][10]. As a matter of fact, magnetite bulk single crystals are ferrimagnetic, while magnetite nanocrystals

Direct observation of the CVD growth of monolayer MoS₂ using in situ optical spectroscopy

• Claudia Beatriz López-Posadas,
• Yaxu Wei,
• Wanfu Shen,
• Daniel Kahr,
• Michael Hohage and
• Lidong Sun

Beilstein J. Nanotechnol. 2019, 10, 557–564, doi:10.3762/bjnano.10.57

• monolayer of MoS2. On the front surface, incompletely merged triangular-shaped MoS2 single crystals are observed, along with large nanoparticles at the edges of the crystalline MoS2 and small ones distributed elsewhere on the surface. The lateral size of the crystalline MoS2 grains is in the order of

• micrometers. In contrast, the large nanoparticles at the edges of MoS2 single crystals exhibit diameters of approximately 50 nm and heights around 10 nm, whereas the small ones show diameters around 20 nm and heights around 1 nm (see Supporting Information File 1, Figure S1). Similar morphology has been