Photocatalytic degradation of methylene blue under visible light by cobalt ferrite nanoparticles/graphene quantum dots

• Vo Chau Ngoc Anh,
• Le Thi Thanh Nhi,
• Le Thi Kim Dung,
• Dang Thi Ngoc Hoa,
• Nguyen Truong Son,
• Nguyen Thi Thao Uyen,
• Nguyen Ngoc Uyen Thu,
• Le Van Thanh Son,
• Le Trung Hieu,
• Tran Ngoc Tuyen and
• Dinh Quang Khieu

Beilstein J. Nanotechnol. 2024, 15, 475–489, doi:10.3762/bjnano.15.43

• degradation of methylene blue (MB) under visible light. The catalyst can be recycled with an external magnetic field and displays suitable stability. Also, it was reused in three successive experiments with a loss of efficiency of about 5%. The CF/GQDs are considered as an efficient photocatalyst for MB

On the mechanism of piezoresistance in nanocrystalline graphite

• Sandeep Kumar,
• Simone Dehm and
• Ralph Krupke

Beilstein J. Nanotechnol. 2024, 15, 376–384, doi:10.3762/bjnano.15.34

• , Technische Universität Darmstadt, 64287 Darmstadt, Germany 10.3762/bjnano.15.34 Abstract Strain sensors are sensitive to mechanical deformations and enable the detection of strain also within integrated electronics. For flexible displays, the use of a seamlessly integrated strain sensor would be beneficial

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

• displays two steps corresponding to the backscattering from Si and Ar for channel numbers ≈1050 and ≈1275, respectively. Defect clustering may lead to a subsequent increase of the damage peak in irradiated samples as compared to that of pristine Si and Ge samples. To understand the evolution of the lattice

Determining by Raman spectroscopy the average thickness and N-layer-specific surface coverages of MoS₂ thin films with domains much smaller than the laser spot size

• Felipe Wasem Klein,
• Jean-Roch Huntzinger,
• Vincent Astié,
• Damien Voiry,
• Romain Parret,
• Houssine Makhlouf,
• Sandrine Juillaguet,
• Jean-Manuel Decams,
• Sylvie Contreras,
• Périne Landois,
• Ahmed-Azmi Zahab,
• Jean-Louis Sauvajol and
• Matthieu Paillet

Beilstein J. Nanotechnol. 2024, 15, 279–296, doi:10.3762/bjnano.15.26

• advantage is to give a common origin to the plots of A2D(Si)/A0(Si) as a function of N (A2D(Si)/A0(Si) = 1 for N = 0) for any SiO2 thickness. Figure 3c displays the A2D(Si)/A0(Si) ratio measured on exfoliated MoS2 flakes deposited on SiO2/Si(100) substrates with four different SiO2 thicknesses as a function

Vinorelbine-loaded multifunctional magnetic nanoparticles as anticancer drug delivery systems: synthesis, characterization, and in vitro release study

• Zeynep Özcan and
• Afife Binnaz Hazar Yoruç

Beilstein J. Nanotechnol. 2024, 15, 256–269, doi:10.3762/bjnano.15.24

• nitrogen–hydrogen (N–H) group in the range of 3500–3000 cm−1 [53]. The FTIR spectrum of VNB/PDA/PDA/Fe3O4 NPs displays all PDA, SH-PEG, and VNB peaks, indicating the successful formation of a core–shell structure containing these three components. According to the VSM analysis, the saturation magnetization

Design, fabrication, and characterization of kinetic-inductive force sensors for scanning probe applications

• August K. Roos,
• Ermes Scarano,
• Elisabet K. Arvidsson,
• Erik Holmgren and
• David B. Haviland

Beilstein J. Nanotechnol. 2024, 15, 242–255, doi:10.3762/bjnano.15.23

• meets the Si substrate. The FEM model gives the distribution of strain at the surface. Figure 2a shows the distribution of longitudinal strain εxx(x, y) for the fundamental bending mode of interest. The strain is normalized to its maximum value at the center of the clamping line. Figure 2b displays this

• Ls for the shunted sample. The lack of a shunt is equivalent to Ls→∞. Both samples are designed to be largely overcoupled to the transmission line. The sample with the shunt displays a sharper phase response and a larger dip in the magnitude response, showing that it is closer to the critical

Quantitative wear evaluation of tips based on sharp structures

• Ke Xu and
• Houwen Leng

Beilstein J. Nanotechnol. 2024, 15, 230–241, doi:10.3762/bjnano.15.22

• parameters. Expanding on this, the same sample was scanned using different scanning parameters to assess their impact on image quality. Figure 14 displays images of the identical sample captured with different scanning parameters. After a continuous 5 h scan with parameters set to a free amplitude of 300 mV

Multiscale modelling of biomolecular corona formation on metallic surfaces

• Parinaz Mosaddeghi Amini,
• Ian Rouse,
• Julia Subbotina and
• Vladimir Lobaskin

Beilstein J. Nanotechnol. 2024, 15, 215–229, doi:10.3762/bjnano.15.21

• proteins, we utilize the I-TASSER (Iterative Threading ASSEmbly Refinement) 5.1 software [41], which uses the protein’s AA sequences as an input. For this study, we have chosen six representative cow milk proteins and lactose, which constitute most of the non-fat milk solids. Table 1 displays properties of

Enhanced feedback performance in off-resonance AFM modes through pulse train sampling

• Mustafa Kangül,
• Navid Asmari,
• Santiago H. Andany,
• Marcos Penedo and
• Georg E. Fantner

Beilstein J. Nanotechnol. 2024, 15, 134–143, doi:10.3762/bjnano.15.13

• captured at different scan rates with both methods. Panel (A) displays the height image captured at 0.5 Hz line rate with the pulse sampling method. Panel (B) displays the error channels at 0.5 Hz line rate (i., ii.) and 1 Hz line rate (iii., iv.), for impulse sampling mode (i., iii) and pulse sampling

• -state error of the sample tilt. Both methods are used to image PS/LDPE. The height image of the sample in panel (A) was captured using the pulse sampling mode imaging at 0.5 Hz line rate. Panel (B) displays the error channels obtained with both methods at the line rates of 0.5 Hz (i., ii) and 1 Hz (iii

Assessing phytotoxicity and tolerance levels of ZnO nanoparticles on Raphanus sativus: implications for widespread adoptions

• Pathirannahalage Sahan Samuditha,
• Nadeesh Madusanka Adassooriya and
• Nazeera Salim

Beilstein J. Nanotechnol. 2024, 15, 115–125, doi:10.3762/bjnano.15.11

• (Figure 1c) shows significant absorption peaks at 545, 718, 902, 2028, and 2159 cm−1. The UV–vis spectrum of synthesized ZnO-NPs displays a broad band at 362 nm (Figure 1d). The SEM images (Figure 1e) confirmed that ZnO NPs have spherical morphology with an average diameter of 70 nm. Phytotoxicity of ZnO

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

• after stretching the PLA solution during the electrospinning process displays only a broad scattering band, located at around 2θ = 21.3°, indicating an amorphous structure of PLA nanofibers. Due to the stretching and rapid solidification of the PLA solution during traveling from the needle to the

Curcumin-loaded nanostructured systems for treatment of leishmaniasis: a review

• Douglas Dourado,
• Thayse Silva Medeiros,
• Éverton do Nascimento Alencar,
• Edijane Matos Sales and
• Fábio Rocha Formiga

Beilstein J. Nanotechnol. 2024, 15, 37–50, doi:10.3762/bjnano.15.4

• against cutaneous and visceral leishmaniasis has been explored [42]. In vitro and in vivo studies have revealed that curc displays leishmanicidal activity against amastigotes and promastigotes of the species Leishmania amazonensis [43], Leishmania braziliensis [44], Leishmania donavani [45], Leishmania

Nanotechnological approaches in the treatment of schistosomiasis: an overview

• Lucas Carvalho,
• Michelle Sarcinelli and
• Beatriz Patrício

Beilstein J. Nanotechnol. 2024, 15, 13–25, doi:10.3762/bjnano.15.2

• , both in vitro an in vivo, or none. Percentage of compounds encapsulated among the selected articles. The graph considers a total of 53 articles that utilized nanosystems for drug delivery. It displays the percentage of these articles that used each drug category: praziquantel, plant-derived medicines

• , repositioned drugs, and other compounds. Percentage of types of nanosystems used in the selected articles. The graph considers a total of 65 articles found and displays the percentage of them that utilizes the differents nanosystems: liposomes, lipid nanocapsules, nanosuspensions, nanocomposites, inorganic

unDrift: A versatile software for fast offline SPM image drift correction

• Tobias Dickbreder,
• Franziska Sabath,
• Lukas Höltkemeier,
• Ralf Bechstein and
• Angelika Kühnle

Beilstein J. Nanotechnol. 2023, 14, 1225–1237, doi:10.3762/bjnano.14.101

• . The software displays both images used for drift correction and a variable number of markers in different colors as shown in Figure 3a,b. The user can, then, move these markers to match the positions of stationary features and start the drift correction by clicking a button. As this positioning of

Curcumin-loaded albumin submicron particles with potential as a cancer therapy: an in vitro study

• Nittiya Suwannasom,
• Netsai Sriaksorn,
• Chutamas Thepmalee,
• Krissana Khoothiam,
• Ausanai Prapan,
• Hans Bäumler and
• Chonthida Thephinlap

Beilstein J. Nanotechnol. 2023, 14, 1127–1140, doi:10.3762/bjnano.14.93

• hydrophobic yellow-orange polyphenol compound isolated from the rhizomes of Curcuma longa. Numerous studies have consistently demonstrated that CUR displays a vast range of pharmacological and medicinal properties, including antioxidant, anti-inflammatory, anti-diabetic, anti-hepatotoxic activities, and

Dual-heterodyne Kelvin probe force microscopy

• Benjamin Grévin,
• Fatima Husainy,
• Dmitry Aldakov and
• Cyril Aumaître

Beilstein J. Nanotechnol. 2023, 14, 1068–1084, doi:10.3762/bjnano.14.88

• ), Vbias = Vac + Vdc. The electrostatic force displays modulated components, and some are directly proportional to the dc electrostatic potential term (i.e., Vdc ± VCPD). The idea is to demodulate such a component, and feed it into a loop which controls the dc bias. The KPFM controller (with a zero set

• calculated SPV magnitude image (Figure 4c) displays contrasts, which definitely confirm our former assumptions. It displays indeed local minima that are correlated with the topographic protrusions. At the same time, the full set of phase data confirms that the SPV polarity remains constant over the entire

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

• anions (Figure 1B). In the case of the reference x1, the spectrum displays a broad signal at ca. 3400 cm−1, which corresponds to the OH stretching vibrations typically attributed to interlayer water molecules, as confirmed by the extra signal at 1600 cm−1 (water bending mode). The presence of carbonate

A wearable nanoscale heart sound sensor based on P(VDF-TrFE)/ZnO/GR and its application in cardiac disease detection

• Yi Luo,
• Jian Liu,
• Jiachang Zhang,
• Yu Xiao,
• Ying Wu and
• Zhidong Zhao

Beilstein J. Nanotechnol. 2023, 14, 819–833, doi:10.3762/bjnano.14.67

• completely immersed. After letting it stand for two days, the flexible nanoscale heart sound sensor is ready for use. Figure 3 displays the actual sensor produced. Figure 3a and Figure 3b show, respectively, photos of the front and the back side of the sensor, and Figure 3c and Figure 3d show photos of the

• data collected from the acquisition system is fed into a classification model trained in MATLAB. The program then predicts whether the heart sound is normal or abnormal based on the model, and displays the prediction results on the front panel. By observing the waveform displayed on the front panel, it

• utilized to analyze the composition and β-phase content of the composite piezoelectric nanofilms, while scanning electron microscopy (SEM) was employed to observe the morphology of the thin film filaments. Figure 6 displays the XRD patterns of the three composite piezoelectric nanofilms. In the P(VDF-TrFE

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

• with an increase in the concentration of reactants. Structural characterization of the SERS substrate In Supporting Information File 1, Figure S10a shows the SEM image of the SAM of Ag NPs on the surface of methanol, while Figure S10b displays the image of the PS substrate after covering with the Ag

• M was added to the PS40min@Ag substrate. Figure 5c displays the SERS spectra collected from each position, while Figure 5d shows the SERS peak intensity at 621 cm−1 for the different positions. The relative standard deviation (RSD) was calculated to be 8%, indicating that the PS@Ag structure yielded

A graphene quantum dots–glassy carbon electrode-based electrochemical sensor for monitoring malathion

• Sanju Tanwar,
• Aditi Sharma and
• Dhirendra Mathur

Beilstein J. Nanotechnol. 2023, 14, 701–710, doi:10.3762/bjnano.14.56

• 1380 cm−1 to C–H vibrations of alkyl groups [37]. It can be inferred that the surface of GQDs is passivated by surface groups that occur during the carbonization of glucose. The Raman spectrum of the GQDs in the spectral range of 1000–2000 cm−1 without any baseline correction displays typical D (ca

The microstrain-accompanied structural phase transition from h-MoO₃ to α-MoO₃ investigated by in situ X-ray diffraction

• Zeqian Zhang,
• Honglong Shi,
• Boxiang Zhuang,
• Minting Luo and
• Zhenfei Hu

Beilstein J. Nanotechnol. 2023, 14, 692–700, doi:10.3762/bjnano.14.55

• 430 °C, respectively, implying the collapse of the octahedra tunnel due to the dramatic increase of thermal expansion. Changes in the Mo–Mo bonds are influenced by coordinated oxygen atoms that are sensitive to the thermal effect. Figure 5d–f displays the variation of the Mo–O bond lengths within the

Nanoarchitectonics to entrap living cells in silica-based systems: encapsulations with yolk–shell and sepiolite nanomaterials

• Celia Martín-Morales,
• Jorge Fernández-Méndez,
• Pilar Aranda and
• Eduardo Ruiz-Hitzky

Beilstein J. Nanotechnol. 2023, 14, 522–534, doi:10.3762/bjnano.14.43

• each cell displays a similar size and morphology to cells grown in liquid culture. However, some cyanobacterial cells present a slightly reduced size and a more spherical morphology when compared to their common rod-shaped appearance. Although this change in morphology is correlated with stress

• nanoparticles in the yolk–shell synthesis. Optical microscopy provides a close-to-bulk overview of the material, allowing us to study the cell distribution and homogeneity of the biohybrid materials. Figure 3 displays optical microscopy images of both cyanobacteria and yeast cells. In the G57-4 material with

• . SEM/EDS analysis provided detailed information about the structural features of yeast cells embedded in the silica matrix. Figure 4 displays the most relevant findings of this imaging study. Figure 4A shows that the yeast cells are found in specific points of the matrix, mainly arranged in groups

Conjugated photothermal materials and structure design for solar steam generation

• Chia-Yang Lin and
• Tsuyoshi Michinobu

Beilstein J. Nanotechnol. 2023, 14, 454–466, doi:10.3762/bjnano.14.36

• derivatives on a filter paper produced Janus structures with a hydrophobic top surface suitable for vapor generation and a hydrophilic bottom surface for water uptake and transport. Figure 10e displays the developed SSG device. A cotton fiber thread connects the photothermal membrane to the water tank and

Combining physical vapor deposition structuration with dealloying for the creation of a highly efficient SERS platform

• Adrien Chauvin,
• Walter Puglisi,
• Damien Thiry,
• Cristina Satriano,
• Rony Snyders and
• Carla Bittencourt

Beilstein J. Nanotechnol. 2023, 14, 83–94, doi:10.3762/bjnano.14.10

• to the alloy thin film. Three different silver compositions were selected, namely 18, 30, and 36 atom %, and characterized by SEM/energy-dispersive X-ray spectroscopy (EDX). Figure 1 displays the SEM micrograph of the as-deposited thin films. The thin films exhibit a columnar morphology (see the

• − ions [47]. Figure 7b displays the content of aluminum residue in samples after dealloying probed by EDX. Two different behaviors can be observed: for the HCl medium, the aluminum residue content decreases when the initial silver content is increased whereas for H3PO4 and NaOH, no change in the aluminum

Liquid phase exfoliation of talc: effect of the medium on flake size and shape

• Samuel M. Sousa,
• Helane L. O. Morais,
• Joyce C. C. Santos,
• Ana Paula M. Barboza,
• Bernardo R. A. Neves,
• Elisângela S. Pinto and
• Mariana C. Prado

Beilstein J. Nanotechnol. 2023, 14, 68–78, doi:10.3762/bjnano.14.8

• powder was exfoliated in each liquid medium by exposure to mechanical energy provided by an ultrasonic bath (full details in the Experimental section). Talc was manually milled down to a fine powder and characterized by X-ray diffraction (XRD). Figure 1a displays the results. All peaks are assigned to

• the EMG is not; it is possible to characterize this asymmetry by calculating two shape parameters, k (asymmetry) and τ (trimness), both functions of σ and λ: An in-depth discussion of these can be found elsewhere [25][29]. Figure 4a,b displays the topological vectors constructed for each sample for k