Search results

Search for "transformation" in Full Text gives 390 result(s) in Beilstein Journal of Nanotechnology. Showing first 200.

Nanotechnology – a robust tool for fighting the challenges of drug resistance in non-small cell lung cancer

  • Filip Gorachinov,
  • Fatima Mraiche,
  • Diala Alhaj Moustafa,
  • Ola Hishari,
  • Yomna Ismail,
  • Jensa Joseph,
  • Maja Simonoska Crcarevska,
  • Marija Glavas Dodov,
  • Nikola Geskovski and
  • Katerina Goracinova

Beilstein J. Nanotechnol. 2023, 14, 240–261, doi:10.3762/bjnano.14.23

Graphical Abstract
PDF
Album
Review
Published 22 Feb 2023

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

Graphical Abstract
  • the need to use a comprehensive approach in theoretical studies, since the behavior of different phases is often described by different models or state equations [4]. Another reason is that phase transformation mechanisms originate at the nanoscale and atomic levels [5][6], where observation and
  • considerable changes. In the graph of Figure 5, this time period is marked by the letter (a) and is shown in an enlarged form. The jumps in the spin temperature transformation at 0–3 ps correspond to an active rearrangement of the atomic spin directions, which were unstable in the initial state due to
PDF
Album
Full Research Paper
Published 04 Jan 2023

A TiO2@MWCNTs nanocomposite photoanode for solar-driven water splitting

  • Anh Quynh Huu Le,
  • Ngoc Nhu Thi Nguyen,
  • Hai Duy Tran,
  • Van-Huy Nguyen and
  • Le-Hai Tran

Beilstein J. Nanotechnol. 2022, 13, 1520–1530, doi:10.3762/bjnano.13.125

Graphical Abstract
  • transforms into rutile. This could be due to the carbon components on the MWCNTs acting as a robust reducing agent for facilitating the transformation from anatase to rutile TiO2 by forming oxygen vacancies [30]. Generally, the capacitance of the photoelectrochemical electrode is associated with the
PDF
Album
Full Research Paper
Published 14 Dec 2022

In search of cytotoxic selectivity on cancer cells with biogenically synthesized Ag/AgCl nanoparticles

  • Mitzi J. Ramírez-Hernández,
  • Mario Valera-Zaragoza,
  • Omar Viñas-Bravo,
  • Ariana A. Huerta-Heredia,
  • Miguel A. Peña-Rico,
  • Erick A. Juarez-Arellano,
  • David Paniagua-Vega,
  • Eduardo Ramírez-Vargas and
  • Saúl Sánchez-Valdes

Beilstein J. Nanotechnol. 2022, 13, 1505–1519, doi:10.3762/bjnano.13.124

Graphical Abstract
  • nanoparticles. Crystalline behavior In all of the reactions, the X-ray diffraction patterns shown in Figure 2 confirm the transformation of AgNO3 into metallic Ag. The characteristic peaks of AgNO3 salt and metallic Ag are indicated by short lines and can be used as a reference for comparison with the
PDF
Album
Full Research Paper
Published 13 Dec 2022

Hydroxyapatite–bioglass nanocomposites: Structural, mechanical, and biological aspects

  • Olga Shikimaka,
  • Mihaela Bivol,
  • Bogdan A. Sava,
  • Marius Dumitru,
  • Christu Tardei,
  • Beatrice G. Sbarcea,
  • Daria Grabco,
  • Constantin Pyrtsac,
  • Daria Topal,
  • Andrian Prisacaru,
  • Vitalie Cobzac and
  • Viorel Nacu

Beilstein J. Nanotechnol. 2022, 13, 1490–1504, doi:10.3762/bjnano.13.123

Graphical Abstract
  • glass in the HA-BG composites may stimulate the transformation of HA into tricalcium phosphate (TCP) during the sintering at high temperatures, inducing more reactivity of the material in the physiologic environment [4][20]. The HA-TCP transformation can be controlled through the glass fraction and the
  • glass, for which the full decomposition of HA into TCP takes place at both 1200 and 1250 °C, the increase of Pa with Ts may have two reasons, namely (i) the transformation from β-TCP to α-TCP [21][43] and (ii) a more compacted structure of HAPCs and the appearance of cracks, clearly seen on SEM images
  • ][55] and can be explained by the formation of CaO-P2O5 or other calcium deficient phases. At the later stages of biomineralization, that is, after longer soaking times, the precipitate undergoes structural and chemical transformation resulting in the formation of carbonate-hydroxyapatite (CHA). The
PDF
Full Research Paper
Published 12 Dec 2022

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

Graphical Abstract
  • Nirmalendu S. Mishra Pichiah Saravanan Environmental Nanotechnology Laboratory, Department of Environmental Science and Engineering, Indian Institute of Technology (ISM), Dhanbad-826004, Jharkhand, India 10.3762/bjnano.13.114 Abstract The present study outlines the transformation of non
PDF
Album
Full Research Paper
Published 22 Nov 2022

Recent trends in Bi-based nanomaterials: challenges, fabrication, enhancement techniques, and environmental applications

  • Vishal Dutta,
  • Ankush Chauhan,
  • Ritesh Verma,
  • C. Gopalkrishnan and
  • Van-Huy Nguyen

Beilstein J. Nanotechnol. 2022, 13, 1316–1336, doi:10.3762/bjnano.13.109

Graphical Abstract
  • , Huang et al. reported that BiOI microspheres served as self-sacrificing templates for in situ phase transformation and formation of phase junctions [81]. Different bismuth oxyiodides were formed as a result of this. Hierarchical BiOI, Bi4O5I2, Bi4O5I2–Bi5O7I phase-junction, and Bi5O7I may be synthesized
PDF
Album
Review
Published 11 Nov 2022

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

Graphical Abstract
  • , we present the details of such a transformation from usual to anomalous dependence with variations in the spin–orbit coupling and the Josephson-to-magnetic energy ratio. To investigate the effect of damping, we calculate the maximal amplitude of the magnetization component my taken at each value of
PDF
Album
Supp Info
Full Research Paper
Published 21 Oct 2022

Design of a biomimetic, small-scale artificial leaf surface for the study of environmental interactions

  • Miriam Anna Huth,
  • Axel Huth,
  • Lukas Schreiber and
  • Kerstin Koch

Beilstein J. Nanotechnol. 2022, 13, 944–957, doi:10.3762/bjnano.13.83

Graphical Abstract
  • (Figure 6). Thus, no transformation of substances had taken place and the wax composition was stable. In a previous study, the wax composition of leek wax was also found to be thermally stable [72]. Since the evaporated substances spread uniformly in vacuum from the point source and the samples were
PDF
Supp Info
Full Research Paper
Published 13 Sep 2022

A superconducting adiabatic neuron in a quantum regime

  • Marina V. Bastrakova,
  • Dmitrii S. Pashin,
  • Dmitriy A. Rybin,
  • Andrey E. Schegolev,
  • Nikolay V. Klenov,
  • Igor I. Soloviev,
  • Anastasiya A. Gorchavkina and
  • Arkady M. Satanin

Beilstein J. Nanotechnol. 2022, 13, 653–665, doi:10.3762/bjnano.13.57

Graphical Abstract
  • transformation of the input magnetic flux (Equation 2). We describe it using the time-dependent Schrödinger equation: Eigenvectors of the system are found by numerical solution of Equation 7 (see details in Appendix 2). Thereafter, from the evolution of average values of the phase and current operators we found
  • of allowed energy values is discrete). Moreover, the sigmoidal transformation of the applied magnetic flux into the average output current can be obtained both for single-well and double-well potential energies of the cell. The influence of the initial quantum state of the neuron on the shape of the
  • master equation. (a) Sketch of a flexible hybrid system consisting of a classical ANN having its configuration (synaptic weights) dynamically adjusted by a quantum co-processor. (b) Schematic representation of the SQ neuron providing nonlinear magnetic flux transformation. The energy spectrum and
PDF
Album
Full Research Paper
Published 14 Jul 2022

Quantitative dynamic force microscopy with inclined tip oscillation

  • Philipp Rahe,
  • Daniel Heile,
  • Reinhard Olbrich and
  • Michael Reichling

Beilstein J. Nanotechnol. 2022, 13, 610–619, doi:10.3762/bjnano.13.53

Graphical Abstract
  • with pointing in the direction of Assuming an inclination angle of α (with 0 ≤ α ≤ π/2) between and any position on the w-axis can be expressed by the respective position on the ztip-axis by a simple geometrical transformation. This implies that any sensor movement along zp is not in line with the
PDF
Album
Full Research Paper
Published 06 Jul 2022

Sodium doping in brookite TiO2 enhances its photocatalytic activity

  • Boxiang Zhuang,
  • Honglong Shi,
  • Honglei Zhang and
  • Zeqian Zhang

Beilstein J. Nanotechnol. 2022, 13, 599–609, doi:10.3762/bjnano.13.52

Graphical Abstract
  • interplanar spacing values are 3.5092 and 3.4619 Å, respectively. Thus, the orientation relationship between the matrix and twins is // and // The twinning effect in the brookite structure may be the major driven force of the phase transformation from the brookite NaxTi1−xO2 to Na2Ti6O13. Such transformation
  • , where the inset illustrates the local atomic structures of brookite. (a) An HRTEM image exhibits the core–shell structure in a brookite crystallite calcinated at 400 °C. (b) The magnified HRTEM image in the dashed box shows an atom-splitting effect. (b1–b2) The Fourier transformation diffractogram of
  • the core and the shell. (c) The HRTEM image of a twinning boundary in a brookite crystallite calcinated at 800 °C, (d) the corresponding Fourier transformation diagram of the matrix (red) and the twins (green). Listed are the direct/indirect bandgaps determined from diffuse reflectance spectra, the
PDF
Album
Supp Info
Full Research Paper
Published 05 Jul 2022

Effects of substrate stiffness on the viscoelasticity and migration of prostate cancer cells examined by atomic force microscopy

  • Xiaoqiong Tang,
  • Yan Zhang,
  • Jiangbing Mao,
  • Yuhua Wang,
  • Zhenghong Zhang,
  • Zhengchao Wang and
  • Hongqin Yang

Beilstein J. Nanotechnol. 2022, 13, 560–569, doi:10.3762/bjnano.13.47

Graphical Abstract
  • functions have not been well appreciated [16]. In recent years, alterations in the physical properties of cells have been considered as a marker of malignant transformation of cancer cells [17][18][19]. Based on atomic force microscopy (AFM) measurements, our group found that the progression of prostate
PDF
Album
Supp Info
Full Research Paper
Published 28 Jun 2022

Tunable superconducting neurons for networks based on radial basis functions

  • Andrey E. Schegolev,
  • Nikolay V. Klenov,
  • Sergey V. Bakurskiy,
  • Igor I. Soloviev,
  • Mikhail Yu. Kupriyanov,
  • Maxim V. Tereshonok and
  • Anatoli S. Sidorenko

Beilstein J. Nanotechnol. 2022, 13, 444–454, doi:10.3762/bjnano.13.37

Graphical Abstract
  • For neural networks based on the considered G-neurons, tunable elements with linear current-to-flux transformation (linear inductors) and memory properties are extremely important [50][51]. Tunability of the inductance l in Figure 1b allows for an in situ switching between operating modes directly on
PDF
Album
Full Research Paper
Published 18 May 2022

The role of sulfonate groups and hydrogen bonding in the proton conductivity of two coordination networks

  • Ali Javed,
  • Felix Steinke,
  • Stephan Wöhlbrandt,
  • Hana Bunzen,
  • Norbert Stock and
  • Michael Tiemann

Beilstein J. Nanotechnol. 2022, 13, 437–443, doi:10.3762/bjnano.13.36

Graphical Abstract
  • h in dry air. This process is supposed to remove surface-adsorbed water, such as residues from the synthesis process or from exposure to humid conditions. Powder X-ray diffraction confirmed that this process does not affect the crystallinity of the two materials, and no phase transformation was
PDF
Album
Supp Info
Full Research Paper
Published 04 May 2022

A chemiresistive sensor array based on polyaniline nanocomposites and machine learning classification

  • Jiri Kroutil,
  • Alexandr Laposa,
  • Ali Ahmad,
  • Jan Voves,
  • Vojtech Povolny,
  • Ladislav Klimsa,
  • Marina Davydova and
  • Miroslav Husak

Beilstein J. Nanotechnol. 2022, 13, 411–423, doi:10.3762/bjnano.13.34

Graphical Abstract
  • , and GPC were used to achieve the highest classification rate. This paragraph and the following paragraph about PCA and LDA follow closely the corresponding content in [27]. PCA is a linear transformation that preserves as much data variance as possible. PCA chooses a matrix T that minimizes the mean
  • provides a linear projection of the data with (c – 1) dimensions, by considering the scatter of data within each class and across classes. Projection directions are those that maximize the inter-class separation of the projected data. The LDA transformation matrix is given by where SW and ΛW are
PDF
Album
Full Research Paper
Published 27 Apr 2022

Tin dioxide nanomaterial-based photocatalysts for nitrogen oxide oxidation: a review

  • Viet Van Pham,
  • Hong-Huy Tran,
  • Thao Kim Truong and
  • Thi Minh Cao

Beilstein J. Nanotechnol. 2022, 13, 96–113, doi:10.3762/bjnano.13.7

Graphical Abstract
  • of Sn at the surface of SnO2 plays a role in the reversible transformation of the surface composition from Sn4+ cations to Sn2+, which leads to active centers in the surface chemical process [48]. Moreover, the OVs in SnO2 often appear when it is synthesized by chemical methods such as sol–gel
PDF
Album
Review
Published 21 Jan 2022

Measurement of polarization effects in dual-phase ceria-based oxygen permeation membranes using Kelvin probe force microscopy

  • Kerstin Neuhaus,
  • Christina Schmidt,
  • Liudmila Fischer,
  • Wilhelm Albert Meulenberg,
  • Ke Ran,
  • Joachim Mayer and
  • Stefan Baumann

Beilstein J. Nanotechnol. 2021, 12, 1380–1391, doi:10.3762/bjnano.12.102

Graphical Abstract
  • occur along the entire length of the grain boundary and is instead localized in one area. Neither for the positive nor for the negative polarization experiments, a change of the local sample topography was observed, which would hint at a local phase transformation. As the surface potential also relaxes
PDF
Album
Full Research Paper
Published 15 Dec 2021

Alteration of nanomechanical properties of pancreatic cancer cells through anticancer drug treatment revealed by atomic force microscopy

  • Xiaoteng Liang,
  • Shuai Liu,
  • Xiuchao Wang,
  • Dan Xia and
  • Qiang Li

Beilstein J. Nanotechnol. 2021, 12, 1372–1379, doi:10.3762/bjnano.12.101

Graphical Abstract
  • ]. Recently, changes of the physical properties of cells are considered to be signs of malignant transformation to cancer cells [5][6]. Measuring the difference in mechanical properties between cancer and normal cells is of great help to understand the changes related to cancer, and may provide the
PDF
Album
Supp Info
Full Research Paper
Published 14 Dec 2021

Identifying diverse metal oxide nanomaterials with lethal effects on embryonic zebrafish using machine learning

  • Richard Liam Marchese Robinson,
  • Haralambos Sarimveis,
  • Philip Doganis,
  • Xiaodong Jia,
  • Marianna Kotzabasaki,
  • Christiana Gousiadou,
  • Stacey Lynn Harper and
  • Terry Wilkins

Beilstein J. Nanotechnol. 2021, 12, 1297–1325, doi:10.3762/bjnano.12.97

Graphical Abstract
PDF
Album
Supp Info
Full Research Paper
Published 29 Nov 2021

Impact of electron–phonon coupling on electron transport through T-shaped arrangements of quantum dots in the Kondo regime

  • Patryk Florków and
  • Stanisław Lipiński

Beilstein J. Nanotechnol. 2021, 12, 1209–1225, doi:10.3762/bjnano.12.89

Graphical Abstract
  • , similarly, for the coupling with interacting dots and with for l = 2 and for l = 3. The diagonalization [6] is exact if t = t’ = 0 or λO = λI = ∞. This transformation shifts the dots to the new equilibrium positions and in general changes the phonon vacuum. In the following we restrict in the expansion
  • of up to the terms λ2. In this sense, the results for stronger coupling should be viewed with caution, treating them only as a quantitative, preliminary insight into the problem. Higher commutator approximations improve accuracy of canonical transformation, but introduce numerical difficulties [68
  • ). Using the form of new fermion operators obtained in Lang–Firsov transformation it is easy to show that the electron Green's function of the dot can be decoupled as [73][74]: where , , and or . The renormalization factor due to e–ph interaction is evaluated as [67]: where For the zero-temperature case
PDF
Album
Full Research Paper
Published 12 Nov 2021

Irradiation-driven molecular dynamics simulation of the FEBID process for Pt(PF3)4

  • Alexey Prosvetov,
  • Alexey V. Verkhovtsev,
  • Gennady Sushko and
  • Andrey V. Solov’yov

Beilstein J. Nanotechnol. 2021, 12, 1151–1172, doi:10.3762/bjnano.12.86

Graphical Abstract
  • for quantum and chemical transformation of surface-adsorbed molecular systems under focused electron beam irradiation [13][14][15][16]. Within the IDMD framework various quantum processes occurring in an irradiated system (e.g., ionization, bond dissociation via electron attachment, or charge transfer
PDF
Album
Full Research Paper
Published 13 Oct 2021

Self-assembly of amino acids toward functional biomaterials

  • Huan Ren,
  • Lifang Wu,
  • Lina Tan,
  • Yanni Bao,
  • Yuchen Ma,
  • Yong Jin and
  • Qianli Zou

Beilstein J. Nanotechnol. 2021, 12, 1140–1150, doi:10.3762/bjnano.12.85

Graphical Abstract
  • promising natural antitumor drug, which can inhibit the transformation, proliferation, and migration of tumor cells through various ways, and has anti-angiogenic activity and good biocompatibility [72]. However, the poor water solubility and low bioavailability of curcumin hinder its direct application [73
PDF
Album
Review
Published 12 Oct 2021

First-principles study of the structural, optoelectronic and thermophysical properties of the π-SnSe for thermoelectric applications

  • Muhammad Atif Sattar,
  • Najwa Al Bouzieh,
  • Maamar Benkraouda and
  • Noureddine Amrane

Beilstein J. Nanotechnol. 2021, 12, 1101–1114, doi:10.3762/bjnano.12.82

Graphical Abstract
  • conduction bands, respectively. The relation ħωcv = Eck – Evk shows the transition energy from valence to conduction bands. This absorptive imaginary ε2(ω) part of the dielectric function leads to the real part ε1(ω) through the Kramers–Kronig transformation and can be obtained from the following relation
PDF
Album
Full Research Paper
Published 05 Oct 2021

Progress and innovation of nanostructured sulfur cathodes and metal-free anodes for room-temperature Na–S batteries

  • Marina Tabuyo-Martínez,
  • Bernd Wicklein and
  • Pilar Aranda

Beilstein J. Nanotechnol. 2021, 12, 995–1020, doi:10.3762/bjnano.12.75

Graphical Abstract
  • intermediate reactions [15], that is, (1) the transformation of sulfur into long-chain polysulfides: 4Na + S8 ⇌ 2Na2Sn (4 < n ≤ 8), (2) the transformation of long-chain into short-chain polysulfides: 2Na + Na2S4 ⇌ 2Na2Sm (2 ≤ m < 4), and (3) the transformation of short-chain polysulfides into sodium sulfide
  • undergo a sodiation process to form Na2S2. Then, the Na2S2 intermediate is converted to Na2S. Another remarkable electrocatalyst are gold nanodots, as reported by Wang et al. [49]. The in situ synchrotron XRD results show that gold can effectively catalyze the transformation of Na2S4 into Na2S in the
PDF
Album
Review
Published 09 Sep 2021
Other Beilstein-Institut Open Science Activities