Out-of-plane polarization induces a picosecond photoresponse in rhombohedral stacked bilayer WSe₂

• Guixian Liu,
• Yufan Wang,
• Zhoujuan Xu,
• Zhouxiaosong Zeng,
• Lanyu Huang,
• Cuihuan Ge and
• Xiao Wang

Beilstein J. Nanotechnol. 2024, 15, 1362–1368, doi:10.3762/bjnano.15.109

• depolarization fields, providing a promising platform for highly integrated devices [1][2][3]. The emergence of ferroelectricity at the atomic scale in vdW ferroelectrics has garnered significant interest because of its potential applications in various fields [4][5][6][7][8][9][10][11][12][13][14]. Through

Investigation of Hf/Ti bilayers for the development of transition-edge sensor microcalorimeters

• Victoria Y. Safonova,
• Anna V. Gordeeva,
• Anton V. Blagodatkin,
• Dmitry A. Pimanov,
• Anton A. Yablokov and
• Andrey L. Pankratov

Beilstein J. Nanotechnol. 2024, 15, 1353–1361, doi:10.3762/bjnano.15.108

• ongoing, and the choice of a superconductor material plays an important role here [6][7]. An increase in sensitivity can be achieved by lowering the critical temperature TC below 100 mK. A known solution is two- or multilayer films of various superconductors and normal metals to suppress the transition

• operating point R0 = 1.46 Ω, the plate temperature T0 = 65 mK, the bias current I0 = 1 μA, the inductance L = 400 nH, the shunt resistance RL = 0.3 Ω, the temperature sensitivity α = 500, the current sensitivity βI = (R0 − RL)/(R0 + RL), the heat capacity C = 6 × 10−14 J/K, the thermal conductance G = 5

Hymenoptera and biomimetic surfaces: insights and innovations

• Vinicius Marques Lopez,
• Carlo Polidori and
• Rhainer Guillermo Ferreira

Beilstein J. Nanotechnol. 2024, 15, 1333–1352, doi:10.3762/bjnano.15.107

• also offers innovative solutions and technological applications. The order Hymenoptera, which includes sawflies, wasps, ants, and bees, is one of the most diverse groups in the class Insecta, with over 153,000 described species [5] and an estimated 1 million species yet to be discovered [6

Nanoarchitectonics with cetrimonium bromide on metal nanoparticles for linker-free detection of toxic metal ions and catalytic degradation of 4-nitrophenol

• Akash Kumar and
• Raja Gopal Rayavarapu

Beilstein J. Nanotechnol. 2024, 15, 1312–1332, doi:10.3762/bjnano.15.106

• high strength to nanoparticles, the use of such nanoparticles is limited in sensing, catalysis, and biomedical applications because of post-synthesis functionalization, morphology, and toxicity [6][7][8]. CTAB is a resilient molecule on the nanoparticle surface because of its micellar structure and

• -dependent impact of nanoparticle stability in NaOH was evaluated using gold nanorods (AuNRs) of two different lengths. AuNR10.5 (set 5), AuNR11.0 (set 6), AuNR20.5 (set 7), and AuNR21.0 (set 8) showed no plasmonic and colorimetric changes in the presence of NaOH (Figure 4c). The as-prepared AuNR20.5 and

Interaction of graphene oxide with tannic acid: computational modeling and toxicity mitigation in C. elegans

• Romana Petry,
• James M. de Almeida,
• Francine Côa,
• Felipe Crasto de Lima,
• Diego Stéfani T. Martinez and
• Adalberto Fazzio

Beilstein J. Nanotechnol. 2024, 15, 1297–1311, doi:10.3762/bjnano.15.105

• on larger scales [4]. Nowadays, there is an increasing commercial availability of graphene-related products and companies with large-scale production capabilities of these materials, which includes GO as an intermediate or final product [5][6][7]. Because of the growing industrial and technological

• , aromatic C=C stretching vibrations, C–OH traction, C–O (epoxy) stretching vibrations, and C–O (alkoxy) stretching vibrations, respectively, indicated by the numbers 1 to 5 in Figure 2a [28][39][40][41]. Important TA bands include 1704, 1600, 1310, and 1180 cm−1 (numbers 6 to 9 in Figure 2a), which

• correspond to C=O, aromatic C=C, phenolic C–OH, and C–O from esters groups connecting the aromatic rings [28][42][43][44]. Important shifts are observed in the C=O-related band of GO. For TA, this band appears at 1704 cm−1 (number 6 in Figure 2a) and for GO at 1734 cm−1, while there is a decrease in

Mn-doped ZnO nanopowders prepared by sol–gel and microwave-assisted sol–gel methods and their photocatalytic properties

• Cristina Maria Vlăduț,
• Crina Anastasescu,
• Silviu Preda,
• Oana Catalina Mocioiu,
• Simona Petrescu,
• Jeanina Pandele-Cusu,
• Dana Culita,
• Veronica Bratan,
• Ioan Balint and
• Maria Zaharescu

Beilstein J. Nanotechnol. 2024, 15, 1283–1296, doi:10.3762/bjnano.15.104

• preferred for synthesizing oxide nanostructures because of their advantages, such as uniform mixing of precursors at the molecular level, low operating temperatures, and the ability to control the physicochemical properties of the final products [5][6]. Among various chemical techniques, the sol–gel method

New design of operational MEMS bridges for measurements of properties of FEBID-based nanostructures

• Bartosz Pruchnik,
• Krzysztof Kwoka,
• Ewelina Gacka,
• Dominik Badura,
• Piotr Kunicki,
• Andrzej Sierakowski,
• Paweł Janus,
• Tomasz Piasecki and
• Teodor Gotszalk

Beilstein J. Nanotechnol. 2024, 15, 1273–1282, doi:10.3762/bjnano.15.103

• emission occur [3][4][5]. There are only a few processes with resolution and repeatability suitable for creating nanostructures, and even fewer are available for self-standing nanostructures. That includes epitaxial techniques as well as focused electron beam-induced deposition (FEBID) [6][7]. Integration

• /nm2 (Figure 6). These two steps were repeated alternately until the spacing in the RoI was reduced to less than 100 nm, as confirmed by SEM imaging (Figure 6). Understanding FIB-induced strain as a physical phenomenon would require a repeatable experimental setup to collect data on the influence of

Functional morphology of cleaning devices in the damselfly Ischnura elegans (Odonata, Coenagrionidae)

• Silvana Piersanti,
• Gianandrea Salerno,
• Wencke Krings,
• Stanislav Gorb and
• Manuela Rebora

Beilstein J. Nanotechnol. 2024, 15, 1260–1272, doi:10.3762/bjnano.15.102

• inorganic and organic particles, which can disrupt its normal function or hinder essential physiological processes, ultimately decreasing survival rates. As a result, insects dedicate a considerable amount of time to self-grooming to eliminate debris [6][7], parasites [8], and pathogens [9]. This grooming

• behavior also plays a role in distributing substances across their bodies, such as antimicrobial compounds [10], brochosomes [11], and cuticular lipids [6][12]. Additionally, self-grooming is essential for flight, as it keeps the wings clean [13], and for movement on land, by ensuring the cleanliness of

• eyes and antennae occurred in bouts (Figure 3, Supporting Information File 1). The mean number of bouts before the insect rested for a time longer than 120 s was higher when the eyes were contaminated (4.3 ± 0.9) and lower (1.8 ± 0.5) when the antennae were contaminated (t = 2.6; d.f. = 6; P = 0.043

The role of a tantalum interlayer in enhancing the properties of Fe₃O₄ thin films

• Hai Dang Ngo,
• Vo Doan Thanh Truong,
• Van Qui Le,
• Hoai Phuong Pham and
• Thi Kim Hang Pham

Beilstein J. Nanotechnol. 2024, 15, 1253–1259, doi:10.3762/bjnano.15.101

• K [1], as well as its high spin polarization with only one spin at the Fermi level, even at room temperature [2][3][4][5][6]. Fe3O4 thin films are an issue of interest and have extensive applications in Li-ion batteries, spin Seebeck devices, supercapacitors, spin Hall magnetoresistance, and the

Dual-functionalized architecture enables stable and tumor cell-specific SiO₂NPs in complex biological fluids

• Iris Renata Sousa Ribeiro,
• Raquel Frenedoso da Silva,
• Romênia Ramos Domingues,
• Adriana Franco Paes Leme and
• Mateus Borba Cardoso

Beilstein J. Nanotechnol. 2024, 15, 1238–1252, doi:10.3762/bjnano.15.100

• [1][2][3][4]. Consequently, the scientific community has focused on improving the targeting of nanoparticles (NPs) to tumor cells through surface functionalization with active groups (e.g., folate, monoclonal antibodies) [5][6][7]. However, according to the literature, only 0.7% of the injected dose

• . Subsequently, the SiO2NPs (functionalized and non-functionalized) were dispersed in DMEM (10% FBS) and added to the cells (0.5 mg·mL–1). The incubation was carried out for periods of 3, 6, 12, and 24 h. Afterward, the medium with SiO2NPs was discarded and the cells were washed 3 times with PBS. Finally, the

• cells were fixed with 4% paraformaldehyde for 20 min and permeabilized with 0.1% Triton X-100 and 2% bovine serum albumin for 40 min. F-actin was stained for 30 min with 10 µg/mL phalloidin-FITC (fluorescein isothiocyanate), and the nuclei were counterstained with 2 µg/mL of 4’,6-diamino-2-phenylindole

Enhanced catalytic reduction through in situ synthesized gold nanoparticles embedded in glucosamine/alginate nanocomposites

• Chi-Hien Dang,
• Le-Kim-Thuy Nguyen,
• Minh-Trong Tran,
• Van-Dung Le,
• Nguyen Minh Ty,
• T. Ngoc Han Pham,
• Hieu Vu-Quang,
• Tran Thi Kim Chi,
• Tran Thi Huong Giang,
• Nguyen Thi Thanh Tu and
• Thanh-Danh Nguyen

Beilstein J. Nanotechnol. 2024, 15, 1227–1237, doi:10.3762/bjnano.15.99

• environment and biological systems. Consequently, integrating green chemistry principles into nanotechnology has become a focus of nanoscience research [6][7]. Numerous studies have highlighted the use of natural compounds or natural sources in the green synthesis of AuNPs [8][9]. Polysaccharides, in

• evidenced by the discoloration of the dye solution and the corresponding decrease in absorbance. Figure 6 illustrates the results of the reduction of organic dyes. Initial experiments were conducted without the nanocatalyst and monitored over one week (Figure 6A,E,I). The findings revealed a gradual

Realizing active targeting in cancer nanomedicine with ultrasmall nanoparticles

• André F. Lima,
• Giselle Z. Justo and
• Alioscka A. Sousa

Beilstein J. Nanotechnol. 2024, 15, 1208–1226, doi:10.3762/bjnano.15.98

• primarily occurs via transendothelial transport pathways [6][7]. Regardless of the mode of NP extravasation, active targeting strategies have been widely explored to further enhance NP accumulation in tumors and NP internalization by cancer cells [8][9]. Active targeting involves the modification of NPs

• , iron oxide, copper sulfide), and rare earth-based usNPs (cerium oxide, gadolinium oxide) [22]. Ultrasmall NPs have dimensions comparable to those of a typical globular protein of 3 to 6 nm in diameter [22][25], although the precise size criteria can vary among researchers. For the purpose of this

• discussion, usNPs are defined as being small enough to undergo renal clearance. While this usually entails usNPs smaller than the kidney filtration barrier of 5–6 nm [26][27][28], slightly larger particles have also been found to undergo renal excretion in some cases. Ultrasmall NPs are situated at the

A low-kiloelectronvolt focused ion beam strategy for processing low-thermal-conductance materials with nanoampere currents

• Annalena Wolff,
• Nico Klingner,
• William Thompson,
• Yinghong Zhou,
• Jinying Lin and
• Yin Xiao

Beilstein J. Nanotechnol. 2024, 15, 1197–1207, doi:10.3762/bjnano.15.97

• cross sections and TEM lamellae of biological samples as well as of other thermally low conductive materials such as polymers [1][2][3][4][5][6][7][8][9][10][11][12][13]. The easily induced heat damage is increasingly being reported [3][6][14][15][16][17]. Despite the importance of this topic, there is

• unfeasibly large area. To further verify that no heat damage occurs, a TEM lamella was prepared using the lower-ion-energy approach (5 keV, nanoampere beam currents). The result is shown in Figure 6. Collagen fibers can be observed for the lower-energy approach, indicating that heat damage was minimized. The

Synthesis, characterization and anticancer effect of doxorubicin-loaded dual stimuli-responsive smart nanopolymers

• Ömür Acet,
• Pavel Kirsanov,
• Burcu Önal Acet,
• Inessa Halets-Bui,
• Dzmitry Shcharbin,
• Şeyda Ceylan Cömert and
• Mehmet Odabaşı

Beilstein J. Nanotechnol. 2024, 15, 1189–1196, doi:10.3762/bjnano.15.96

• ” and “Doxil”. The non-pegylated liposomal doxorubicin Myocet liposomal was approved in the European Union and in Canada for the therapy of metastatic breast cancer in combination with cyclophosphamide [5][6]. The FDA approved Doxil [4]. It was found that liposome-encapsulated DOX is less cardiotoxic

• relatively to the control (non-treated cells). Statistical analysis The statistical analysis of data was made by ANOVA with post-hoc Newman–Keuls test. The data are presented as mean ± S.D., N ≥ 6. Results and Discussion Characterization studies The SNPs were synthesized as both thermo- and pH-sensitive

• /L loaded DOX (i.e., approx. 2 µmol/L released DOX) to 52 ± 7%. This is close to the effect of pure DOX on cells under the same conditions (Figure 6). It means that DOX is continuously released from SNPs during incubation with HeLa cells, and this process is prolonged in time. The slow release at pH

AI-assisted models to predict chemotherapy drugs modified with C₆₀ fullerene derivatives

• Jonathan-Siu-Loong Robles-Hernández,
• Dora Iliana Medina,
• Katerin Aguirre-Hurtado,
• Marlene Bosquez,
• Roberto Salcedo and
• Alan Miralrio

Beilstein J. Nanotechnol. 2024, 15, 1170–1188, doi:10.3762/bjnano.15.95

• . In the United States, 300,590 cases of breast cancer had been estimated for the year 2023, with a total of 43,700 deaths [6]. Latin America has over 210,000 new cases and around 60,000 deaths yearly [7]. For the year 2020, it was estimated that about 2.3 million breast cancer cases were diagnosed in

• . Water solubility values varied between 0.0004 mg/mL and 22.3 mg/mL. The LogP values varied between −2 and 6.54, whereas LogS ranged from −6 to −1.1. Besides, pKa values varied between −8 and 14.55. The hydrogen acceptor count varied widely between 2 and 13, whereas the hydrogen donor count varied

• between 0 and 6. In addition, the polar surface area had variations between 12.47 and 221.29 Å2. The cases of thiotepa and aldoxorubicin were not considered because they are part of the validation set. Rotatable bonds were obtained ranging from 0 to 15. The polarizability varied from 9.46 to 87.46 Å3

Quantum-to-classical modeling of monolayer Ge₂Se₂ and its application in photovoltaic devices

• Anup Shrivastava,
• Shivani Saini,
• Dolly Kumari,
• Sanjai Singh and
• Jost Adam

Beilstein J. Nanotechnol. 2024, 15, 1153–1169, doi:10.3762/bjnano.15.94

• -term instability, poor device scalability, and the use of toxic compounds, have yet to be resolved [6]. Recent advancements have seen the integration of two-dimensional (2D) materials with PSCs, opening new avenues for enhancing their performance and addressing current challenges with the PSCs [7][8

Introducing third-generation periodic table descriptors for nano-qRASTR modeling of zebrafish toxicity of metal oxide nanoparticles

• Supratik Kar and
• Siyun Yang

Beilstein J. Nanotechnol. 2024, 15, 1142–1152, doi:10.3762/bjnano.15.93

• development of nanotechnology, more and more MONPs including zinc, iron, titanium, and copper are being explored in therapeutic applications such as drug delivery, bioimaging, biosensing, bioelectronics, and tissue engineering applications [4][5][6]. Simultaneously, many of these particles also presented

Photocatalytic methane oxidation over a TiO₂/SiNWs p–n junction catalyst at room temperature

• Qui Thanh Hoai Ta,
• Luan Minh Nguyen,
• Ngoc Hoi Nguyen,
• Phan Khanh Thinh Nguyen and
• Dai Hai Nguyen

Beilstein J. Nanotechnol. 2024, 15, 1132–1141, doi:10.3762/bjnano.15.92

• deposition on catalyst surfaces [4][5][6][7]. Therefore, sustainable strategies for both green conversion and atmospheric removal of CH4 are urgently necessary [8][9][10][11]. Semiconductor-based photocatalysis has been attracting scientists’ attention because of its environmental friendliness and easy

• structure of the catalyst provides a surface that can massively increase light absorption, achieving an efficient C2H6 yield of 210 µmol/cm2 in 6 h with high selectivity under light illumination at room temperature. This research could offer new insights into composite photocatalysts for methane coupling

• bar, 20 °C, reaction time t = 6 h in (b). Photocatalytic CH4 oxidation over different types of catalyst (a), and under different types of irradiation (b). Note that only TiO2/SiNWs was used in panel (b). Reaction conditions: 5 bar, 20 °C, t = 6 h. Stability of photocatalytic CH4 oxidation reaction

Local work function on graphene nanoribbons

• Daniel Rothhardt,
• Amina Kimouche,
• Tillmann Klamroth and
• Regina Hoffmann-Vogel

Beilstein J. Nanotechnol. 2024, 15, 1125–1131, doi:10.3762/bjnano.15.91

• ] and p-doping by Bi, Sb, and Au substrates [2]. Confining graphene to nanostructures [6][7], for example, to graphene nanoribbons (GNRs), that is, few nanometers wide stripes of graphene, opens additional possibilities of tuning the electronic properties by creating quantum-confined states [8] and

• opening a size-dependent energy gap [6][9]. As in graphene, the Fermi level of GNRs is also strongly influenced by charge transfer between the substrate and the GNR [10], again related to differences in the work function. Here, we take the work function as a local property influenced by local charge, that

Direct electron beam writing of silver using a β-diketonate precursor: first insights

• Katja Höflich,
• Krzysztof Maćkosz,
• Chinmai S. Jureddy,
• Aleksei Tsarapkin and
• Ivo Utke

Beilstein J. Nanotechnol. 2024, 15, 1117–1124, doi:10.3762/bjnano.15.90

• fragmentation of adsorbed precursor molecules on a substrate [5][6][7][8][9]. The precursor is typically supplied in gaseous phase. Exploiting the different complex pathways in electron-induced chemistry (such as formation of unstable intermediates and thermal assistance in adsorption and desorption) and the

• (Strem Chemicals, CAS 148630-66-4), with a stoichiometry of Ag/P/F/O/C = 1:1:6:2:8 was evaporated using a fully integrated custom-built gas injection system (GIS) consisting of chemically inert steel [28]. No injection needles were used. The components of the GIS that were in direct contact with the

• used beam current of 0.5 nA corresponds to an electron flux of 6 × 104 electrons per second and square nanometer, and an overall dose of 1.7 μC or 1 × 1017 electrons per square nanometer in the center part. There is a visible halo deposition region extending several micrometers beyond the area

Recent updates in applications of nanomedicine for the treatment of hepatic fibrosis

• Damai Ria Setyawati,
• Fransiska Christydira Sekaringtyas,
• Riyona Desvy Pratiwi,
• A’liyatur Rosyidah,
• Rohimmahtunnissa Azhar,
• Nunik Gustini,
• Gita Syahputra,
• Idah Rosidah,
• Etik Mardliyati,
• Tarwadi and
• Sjaikhurrizal El Muttaqien

Beilstein J. Nanotechnol. 2024, 15, 1105–1116, doi:10.3762/bjnano.15.89

• cancer nanomedicines are now under evaluation in clinical stages [6]. Simple liposomal and micellar formulations containing chemotherapeutic agents still predominate in this group. Despite the obstacles and challenges, oncology has become the main focus of nanomedicine [8]. Liposomal doxorubicin was the

• FDA-approved biodegradable polymer. The R406-PLGA NPs (particle size of 159.7 nm) showed a significant downregulation of major inflammatory markers (CCL2, IL-1α, and IL-6) in vitro in murine bone marrow-derived macrophages. In an in vivo experiment using a methionine and choline-deficient (MCD) mouse

• liver cell types, there is a particular receptor that could be targeted to specifically deliver antifibrotic drugs, as illustrated in Figure 2b. On the surface of HSCs, the mannose 6-phosphate receptor (M6PR) is probably the most prominent receptor for targeting HSCs. This particular molecule is

Unveiling the potential of alginate-based nanomaterials in sensing technology and smart delivery applications

• Shakhzodjon Uzokboev,
• Khojimukhammad Akhmadbekov,
• Ra’no Nuritdinova,
• Salah M. Tawfik and
• Yong-Ill Lee

Beilstein J. Nanotechnol. 2024, 15, 1077–1104, doi:10.3762/bjnano.15.88

• environment, and industry [1][2][3][4][5][6][7]. When employing these technical devices, users can chose user-friendly, cost-effective, sensitive, and error-free detecting instruments [8]. The field of biosensors has received a lot of interest over the last years because of their amazing capacity for early

• catalytic and enzymatic peroxidase mimicking activity was synthesized via self-assembly. The decorated Fe3O4@AMALG12@Ag was incorporated into an agarose hydrogel structure, and o-phenylenediamine (OPD) was used as a peroxidase substrate to detect H2O2 calorimetrically (Figure 6). The solid kit demonstrated

Signal generation in dynamic interferometric displacement detection

• Knarik Khachatryan,
• Simon Anter,
• Michael Reichling and
• Alexander von Schmidsfeld

Beilstein J. Nanotechnol. 2024, 15, 1070–1076, doi:10.3762/bjnano.15.87

• displacement of a (quasi) harmonically oscillating microcantilever, acting as one mirror of the interferometer, while the second mirror is the even surface of an optical fiber delivering the light to the microcantilever [5][6][7][8][9][10]. As illustrated in Figure 1, interference occurs in the optical fiber

• voltage signal recorded on the second oscilloscope channel. For data evaluation, a simplified form of Equation 5 is fitted to the averaged trace for each amplitude. In the fit function of Equation 6, linearly depending parameters are gathered into one where VDC represents the constant part of the

• electronics in the signal path. The time dependence of Sloss is neglected as it is of minute influence on the amplitudes used here. However, for experiments with a very large amplitude, it is expected to influence the interference signal. We find that Equation 6 fits the experimental data for all amplitudes

Effect of wavelength and liquid on formation of Ag, Au, Ag/Au nanoparticles via picosecond laser ablation and SERS-based detection of DMMP

• Sree Satya Bharati Moram,
• Chandu Byram and
• Venugopal Rao Soma

Beilstein J. Nanotechnol. 2024, 15, 1054–1069, doi:10.3762/bjnano.15.86

• -dispersive X-ray spectroscopy. Furthermore, NPs of various sizes ranging from 6 to 35 nm were loaded onto a filter paper by a simple and effective drop-casting approach to achieve flexible surface-enhanced Raman spectroscopy (SERS) substrates/sensors. These substrates were tested using a simple, portable

• with water. The expanding metal/water mixture promotes rapid nucleation and growth of small metal NPs and contributes to forming a cavitation bubble. The hot metal layer also breaks into larger droplets due to instabilities, creating NPs of different sizes within a few nanoseconds of laser exposure [6

• ]. The properties of NPs, such as size, shape, crystallinity, productivity, and composition, can be influenced by several experimental parameters during synthesis [4][6][7][8][9][10]. The impact of laser parameters, such as pulse duration, wavelength, repetition rate, and fluence, and of the liquid

Interface properties of nanostructured carbon-coated biological implants: an overview

• Mattia Bartoli,
• Francesca Cardano,
• Erik Piatti,
• Stefania Lettieri,
• Andrea Fin and
• Alberto Tagliaferro

Beilstein J. Nanotechnol. 2024, 15, 1041–1053, doi:10.3762/bjnano.15.85

• applications [4] as active species or as drug delivery platforms using tailored carbon nanotubes (CNTs) [5][6], fullerenes [7][8], carbon dots (CDs) [9][10], and graphene-related materials (i.e., graphene oxide (GO) [11], reduced graphene oxide (rGO) [12], and nanographite (nG) [13]). Furthermore, the