Observation of multiple bulk bound states in the continuum modes in a photonic crystal cavity

• Rui Chen,
• Yi Zheng,
• Xingyu Huang,
• Qiaoling Lin,
• Chaochao Ye,
• Meng Xiong,
• Martijn Wubs,
• Yungui Ma,
• Minhao Pu and
• Sanshui Xiao

Beilstein J. Nanotechnol. 2023, 14, 544–551, doi:10.3762/bjnano.14.45

• polarization-dependent beam splitter (PBS) is added, not only to combine incident and reflection light, but also to filter out the co-polarization component with the incident light. Only the scattering light possessing both polarization components can partially pass the PBS and be detected by the spectrometer

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

• adapting the protocol previously described by Rooke and co-workers [41]. The synthesis conditions were optimised regarding concentration of sodium silicate precursor, temperature, and content of silica nanoparticles (LUDOX® TMA), using a combinatorial exploration of the different synthesis parameters

• preparation have been also optimised. The protocol reported by Wang and co-workers [25] has been adapted as described in the Experimental section. The optima of LUDOX® TMA concentration and protamine incubation time have been found to be 1 mg·mL−1 and 20 min, respectively. Once the optimal synthesis

On the use of Raman spectroscopy to characterize mass-produced graphene nanoplatelets

• Keith R. Paton,
• Konstantinos Despotelis,
• Naresh Kumar,
• Piers Turner and
• Andrew J. Pollard

Beilstein J. Nanotechnol. 2023, 14, 509–521, doi:10.3762/bjnano.14.42

• when fitted with both a GNP and graphite spectrum. The inset shows the low-loading region of the graph, with the same axes. Comparison of literature metrics applied to the current data. (A) Mean number of layers calculated for the two metrics published by Backes and co-workers [13]. (B) R2 value for

• fitting the 2D peak, as proposed by Roscher and co-workers [23]. In both cases, results are shown from analysis of both averaged spectra (filled markers) and individual spectra within each map (open markers). In the latter case, the median value is shown with the error bars showing the standard deviation

Mixed oxides with corundum-type structure obtained from recycling can seals as paint pigments: color stability

• Dienifer F. L. Horsth,
• Julia de O. Primo,
• Nayara Balaba,
• Fauze J. Anaissi and
• Carla Bittencourt

Beilstein J. Nanotechnol. 2023, 14, 467–477, doi:10.3762/bjnano.14.37

• assignment is based on the intrinsic light absorption characteristics of the pigment due to the presence of a chromophore ion [8]. Different transition metals such as V, Cr, Mn, Fe, Co, Ni, and Cu have been used for this purpose [9]. Using inorganic compounds in the synthesis tends to increase the chemical

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

• Energy Conversion”, Adv. Mater., with permission from John Wiley and Sons. Copyright © 2019 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim. This content is not subject to CC BY 4.0. (a) Schematic illustration of the fabrication process and characterization of the photothermal p-PEGDA−PANI hydrogel. (b) Solar

Molecular nanoarchitectonics: unification of nanotechnology and molecular/materials science

• Katsuhiko Ariga

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

• nanoarchitectonics, Kubo and co-workers have developed room-temperature phosphorescence-active thiophene boronate ester-crosslinked polyvinyl alcohol films [93]. The films are capable of multicolor afterglow emission by changing the amount of sulforhodamine B. Molecular design and nanoarchitectonics can sometimes

• ) method [95][96] and layer-by-layer (LbL) assembly [97][98] are used to organize materials from molecules. Oishi and co-workers have used the LB method to create layered perovskite films with a uniform surface [99]. Similarly, LbL assembly is a simple and convenient way to create a wide range of materials

• expression through nanoarchitectonics. Shi and co-workers created nanoparticle surfactants at liquid–liquid interfaces by exploiting the interaction between nanoparticles and polymer ligands [101]. They showed that a size-dependent aggregation of nanoparticle surfactants can be generated at the interface

Evaluation of electrosynthesized reduced graphene oxide–Ni/Fe/Co-based (oxy)hydroxide catalysts towards the oxygen evolution reaction

• Karolina Cysewska,
• Marcin Łapiński,
• Marcin Zając,
• Jakub Karczewski,
• Piotr Jasiński and
• Sebastian Molin

Beilstein J. Nanotechnol. 2023, 14, 420–433, doi:10.3762/bjnano.14.34

• friendly nature [11]. Even though transition-metal-based catalysts still suffer from low surface areas [12], dissolution and aggregation of metallic phase and metal oxides during the active OER process occurs [13]. Hence, Ni-, Fe- and/or Co-based catalysts have been synthesized as hybrid catalysts with

• graphene material with Ni-, Fe- and/or Co-based oxides/hydroxides with high chemical reactivity provides both an effective electron pathway through the catalyst [20] and high specific surface area [21], which is desirable for the OER process [13]. The overall electrocatalytic performance of the hybrid

• electrode can also be improved by choosing a conductive and/or high surface area substrate, such as porous nickel foam [22][23]. In the literature, some research has been performed to evaluate the OER electrocatalytic performance of hybrid materials of Ni-, Fe- and/or Co-based oxides/(oxy)hydroxides and Gr

Plasmonic nanotechnology for photothermal applications – an evaluation

• A. R. Indhu,
• L. Keerthana and
• Gnanaprakash Dharmalingam

Beilstein J. Nanotechnol. 2023, 14, 380–419, doi:10.3762/bjnano.14.33

• (larger than 50 nm) acted more as absorbers than as scatterers for wavelengths of 200–500 nm for Au, 400–1000 nm for Pt, 600–1000 nm for Pd, Co, and Zn, 500–1000 nm for Mo, 200–600 nm for Cu, 300–1000 nm for Ni, 450–1000 nm for V, and 200–1000 nm for Ti. Al and Ag were inefficient absorbers and

Quercetin- and caffeic acid-functionalized chitosan-capped colloidal silver nanoparticles: one-pot synthesis, characterization, and anticancer and antibacterial activities

• Akif Hakan Kurt,
• Elif Berna Olutas,
• Fatma Avcioglu,
• Hamza Karakuş,
• Mehmet Ali Sungur,
• Cansu Kara Oztabag and
• Muhammet Yıldırım

Beilstein J. Nanotechnol. 2023, 14, 362–376, doi:10.3762/bjnano.14.31

• either covered by only chitosan (Ch-Ag NPs) or chitosan with quercetin and caffeic acid as co-capping agents (Ch/Q- and Ch/CA-Ag NPs), and pictures of the nanoparticle solutions under daylight. As seen in Figure 2a, the absorption curve of the Ch-Ag NPs ends at around 600 nm, and the maximum for the

• redshift of the SPR peak implies an increase in the size of Ag NPs. In addition, the broadening of the spectrum can be explained by the increasing size and shape distribution arising from excess co-capping agents, which are present in the reaction medium during the reduction of Ag ions. The broadening in

• and shape distribution with these co-capping agents. TEM images revealed that both Ch/Q- and Ch/CA-Ag NPs were spherical. When the size distributions were examined, the mean particle size of Ch/Q-Ag NPs was 11.2 ± 2.4 nm, and that of Ch/Q-Ag NPs was 10.3 ± 2.4 nm. Furthermore, TEM images of Ch/Q-Ag

The steep road to nonviral nanomedicines: Frequent challenges and culprits in designing nanoparticles for gene therapy

• Yao Yao,
• Yeongun Ko,
• Grant Grasman,
• Jeffery E. Raymond and
• Joerg Lahann

Beilstein J. Nanotechnol. 2023, 14, 351–361, doi:10.3762/bjnano.14.30

• complicated and sometimes ambiguous [32]. To circumvent these issues, given the advancement and prevalence of high- or super-resolution microscopy, imaging-based approaches can be used to directly visualize uptake and determine whether the NP is co-localized or associated with key endocytic structures or

• fluorescence co-localization analysis of endocytic biological markers and NPs [33]. While co-localization studies by means of overexpression of fluorescent proteins of key endocytic regulators or immunostaining for these regulators can be helpful in determining endocytosis routes of NP uptake, care should be

• taken to prevent artifacts [49]. New biological tools, such as SNAP-tag, could be used to label intracellular proteins with high efficiency and low fluorescence background, which would be promising for future co-localization studies investigating NP-mediated endocytic routes [50][51]. The combination of

Polymer nanoparticles from low-energy nanoemulsions for biomedical applications

• Santiago Grijalvo and
• Carlos Rodriguez-Abreu

Beilstein J. Nanotechnol. 2023, 14, 339–350, doi:10.3762/bjnano.14.29

• properties, drug loading, and drug release are discussed. We highlight the utilization of ethyl cellulose, poly(lactic-co-glycolic acid), and polyurethane/polyurea in the field of nanomedicine as potential drug delivery systems. Advances are still needed to achieve better control over size distribution

• in the nanoemulsion. These nanoparticles were complexed with folic acid and showed low hemolytic activity (below 5%). The characteristics of the reported PIC nanoemulsions and derived ethyl cellulose nanoparticles are summarized in Table 1. 3.2 Poly(lactic-co-glycolic acid) nanoparticles Poly(lactic

• -co-glycolic acid) (PLGA) is a biodegradable polymer that decomposes by hydrolysis into non-toxic and easily metabolized monomers, namely lactic and glycolic acid. It is approved by FDA and EMA [23][48]. Biodegradable and biocompatible PLGA nanoparticles find uses as carriers for drugs, peptides

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

• charges and, hence, increase photocatalytic activity, metallic bismuth can function as a direct plasmonic photocatalyst (similar to Au and Ag) or a co-catalyst [77]. Also, the unique layered crystal structure of Aurivillius-type bismuth oxide-based semiconductors allows for the induction of an internal

• nanostructures with oriented carrier transport, high optical performance, and a short carrier diffusion length, for instance, were prepared by Li and co-workers [42]. The photodegradation rates of ciprofloxacin and tetracycline were, respectively, 94.8% and 81.1% after 1 h. Additionally, Lin et al. [122

• . The final product might have some impurities, relatively large particles, and only a small degree of homogeneity. Large volumes of nanopowder can be produced using a relatively simple apparatus via solid-state routes. Wet-chemical methods (such as electrospinning, sol–gel, hydrothermal, ultrasound, co

Biocatalytic synthesis and ordered self-assembly of silica nanoparticles via a silica-binding peptide

• Mustafa Gungormus

Beilstein J. Nanotechnol. 2023, 14, 280–290, doi:10.3762/bjnano.14.25

• properties of the SiBP are shown in Table 1. Synthesis of SiO2 particles The particles were synthesized based on the method described by Stöber and co-workers [42]. Tetraethyl orthosilicate (TEOS) (Alfa Aesar, Ward Hill, MA, USA) was used as the precursor, a 1:1 mixture of ethanol/deionized water was used as

• contents for different groups are given in Table 2. In groups 1, 2, and 3, no NH3 was added to investigate whether SiBP had a catalytic activity by itself to precipitate SiO2 particles. In groups 4, 5, and 6, 0.2 mM NH3 (prepared from 25% ammonium hydroxide (Merck & Co., NJ, USA)) was added in combination

Recent progress in cancer cell membrane-based nanoparticles for biomedical applications

• Qixiong Lin,
• Yueyou Peng,
• Yanyan Wen,
• Xiaoqiong Li,
• Donglian Du,
• Weibin Dai,
• Wei Tian and
• Yanfeng Meng

Beilstein J. Nanotechnol. 2023, 14, 262–279, doi:10.3762/bjnano.14.24

• , cancer cell membrane-encapsulated NPs can achieve better targeting toward tumors. Fang et al. coated poly (lactic-co-glycolic acid) (PLGA) NPs with the MDA-MB-435 human breast cancer cell membrane. The encapsulated biomimetic NPs exhibited a stronger affinity for cultured MDA-MB-435 cells in vitro than

• of DXM to inflammatory regions via the cancer cell membrane-expressed adhesion receptor CD44, which inhibits the expression of inflammation-related components [25]. Furthermore, the highly expressed PD-L1 and CD155 on the cancer cell membrane inhibited the co-receptors PD-1 and TIGHT, thereby

• antigens are present on the surface of cancer cell membranes, which can act as tumor-specific antigens and be extracted by antigen presenting cells [45]. The co-incubation of dendritic cells (DCs) with cancer cell membrane-coated NPs enables the processing and presentation of multiple antigens from the

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

• therapy, leading to the rapid exhaustion of standard molecularly targeted therapeutic options against mutant variants. Attacking multiple molecular targets within one or several signaling pathways by co-delivery of multiple agents is a viable strategy for overcoming and preventing resistance to EGFR TKIs

• . However, because of the difference in pharmacokinetics among agents, combined therapies may not effectively reach their targets. The obstacles regarding the simultaneous co-delivery of therapeutic agents at the site of action can be overcome using nanomedicine as a platform and nanotools as delivery

• intracellular internalization, and bring advantages over conventional nanocarriers. Keywords: co-delivery nanoparticles; combinatorial therapy; EGFR TKI resistance; non-small cell lung cancer (NSCLC); overcoming and preventing resistance; Introduction Among the malignant diseases, lung cancer takes the lead

Cyclodextrins as eminent constituents in nanoarchitectonics for drug delivery systems

• Makoto Komiyama

Beilstein J. Nanotechnol. 2023, 14, 218–232, doi:10.3762/bjnano.14.21

• delivered to a target site, the therapy should be more efficient than a unimodal therapy. For such a co-delivery, CyD-based nanoarchitectures are very convenient since well-defined structures of CyDs allow for the precise molecular design of nanoarchitectures in which the desired nucleic acid drugs are

• ′-direction to provide an overhang in both ends. Thus, the siRNA was captured by two kinds of antisense DNAs on the β-CyDs through RNA/DNA hybridization and co-assembled to the nanoparticles. Folic acid (for targeting tumors) and an influenza hemagglutinin peptide HA (for endosomal escape) were conjugated

• so that it binds to the linker DNA through RNA/DNA duplex formation. Two kinds of β-CyD bearing DNAs (Apt-7F and HA-7R) and the sgRNA/Cas9 composite were co-assembled to nanoparticles of 120 nm diameter (dark yellow). The composite was further modified with an aptamer (for targeting to tumors) and an

Concentration-dependent photothermal conversion efficiency of gold nanoparticles under near-infrared laser and broadband irradiation

• Vikas,
• Raj Kumar and
• Sanjeev Soni

Beilstein J. Nanotechnol. 2023, 14, 205–217, doi:10.3762/bjnano.14.20

• been reported by Cole and co-workers [8]. Similarly, reported efficiencies within 51–95% for GNRs of varying aspect ratios between 2.8 and 3.8 under irradiation with an 808 nm CW laser match with our calculated values [21]. Concentration-dependent photothermal conversion efficiency The concentration

A novel approach to pulsed laser deposition of platinum catalyst on carbon particles for use in polymer electrolyte membrane fuel cells

• Bogusław Budner,
• Wojciech Tokarz,
• Sławomir Dyjak,
• Andrzej Czerwiński,
• Bartosz Bartosewicz and
• Bartłomiej Jankiewicz

Beilstein J. Nanotechnol. 2023, 14, 190–204, doi:10.3762/bjnano.14.19

• by its durability in acidic environments under high potential [23]. However, platinum, which has to be used in PEMFCs in relatively significant amounts, is also scarce, expensive, and sensitive to CO poisoning at standard operating temperatures [4]. Therefore, many research studies have been

High–low Kelvin probe force spectroscopy for measuring the interface state density

• Ryo Izumi,
• Masato Miyazaki,
• Yan Jun Li and
• Yasuhiro Sugawara

Beilstein J. Nanotechnol. 2023, 14, 175–189, doi:10.3762/bjnano.14.18

• reported by Hudlet and co-workers [23]. For simplicity, let us assume that the tip and the sample are represented by parallel plate capacitors. In this case, the electrostatic force Fele acting between the tip and the semiconductor surface is expressed as where Q is the charge per unit surface area induced

• has already been discussed by Hudlet and co-workers [23]. Additionally, there are interface states on the semiconductor surface. Therefore, the contribution of these interface states to the AC component of the electrostatic force must be considered. When an AC bias voltage is applied between the tip

• Schumacher and co-workers [29]. The DC bias voltages that reduced Δf(fm) to zero are slightly different depending on the frequency of the AC bias voltage: Vs(LF) ≈ 47.5 mV and Vs(HF) ≈ 12.0 mV for low- and high-frequency AC bias voltages, respectively. The difference between Vs(LF) and Vs(HF) is ΔVs = −35.5

A distributed active patch antenna model of a Josephson oscillator

• Vladimir M. Krasnov

Beilstein J. Nanotechnol. 2023, 14, 151–164, doi:10.3762/bjnano.14.16

• , developed by Koshelets and co-workers show a remarkable performance in terms of tunability and linewidth [6][9][12]. However, they emit very little power into free space [11][13][15][16]. The low radiation power efficiency, that is, the ratio of radiated to dissipated power, is commonly attributed to a

• high power-efficiency of approx. 50% and a sufficiently high off-cryostat power above 1 mW. Josephson patch oscillator Since in this work I consider patch antennas, below I will dwell on the patch antenna approach, discussed by Ono and co-workers [24]. Figure 4 shows a design of a Josephson patch

Batch preparation of nanofibers containing nanoparticles by an electrospinning device with multiple air inlets

• Dong Wei,
• Chengwei Ye,
• Adnan Ahmed and
• Lan Xu

Beilstein J. Nanotechnol. 2023, 14, 141–150, doi:10.3762/bjnano.14.15

• nanoparticles (ZnO, purity 99.7%, spherical particles with an average diameter of 50 nm) were supplied by Shanghai Sinopharm Chemical Reagent Co., LTD. N,N-Dimethylformamide (DMF) was purchased from Shanghai Lingfeng Chemical Reagent Co., LTD. All materials are analytical grade and can be used without

• purification. Preparation of spinning solution Firstly, 4.5 g PAN and 44 g DMF solution were weighed separately by an electronic balance (XJ120A, Shanghai Precisa Co., LTD), mixed and placed on an unheated magnetic stirrer (HJ-6A, Gongyi Yuhua Instrument Co., LTD.) for stirring for 24 h. Then 1.5 g ZnO

• characterization The spinning solution viscosity was measured by a viscosity instrument (SNB-1, Shanghai Ruifang Co., LTD.). The spinning solution conductivity was tested by a conductivity tester (DDS-307A, Shanghai INESA Analytical Instrument Co., LTD.). The yield of nanofibers fabricated by EMAI was determined

Formation of nanoflowers: Au and Ni silicide cores surrounded by SiO_x branches

• Feitao Li,
• Siyao Wan,
• Dong Wang and
• Peter Schaaf

Beilstein J. Nanotechnol. 2023, 14, 133–140, doi:10.3762/bjnano.14.14

• 305 (FastµXRD) and B715-10009 (BioMacroNano2020), all co-financed by the European Union within the framework of the European Regional Development Fund (ERDF). The financial support from the Thuringian State Graduate Support for one of the authors, F.L., is acknowledged.

Intermodal coupling spectroscopy of mechanical modes in microcantilevers

• Ioan Ignat,
• Bernhard Schuster,
• Jonas Hafner,
• MinHee Kwon,
• Daniel Platz and
• Ulrich Schmid

Beilstein J. Nanotechnol. 2023, 14, 123–132, doi:10.3762/bjnano.14.13

• ; Introduction Atomic force microscopy has established itself as one of the most powerful tools in nanotechnology. With meticulous setups amassing techniques such as ultra high vacuum, cryogenic temperatures, and CO-terminated tips, it is able to create a wonderful vista of surfaces, not missing the atoms for

Characterisation of a micrometer-scale active plasmonic element by means of complementary computational and experimental methods

• Ciarán Barron,
• Giulia Di Fazio,
• Samuel Kenny,
• Silas O’Toole,
• Robin O’Reilly and
• Dominic Zerulla

Beilstein J. Nanotechnol. 2023, 14, 110–122, doi:10.3762/bjnano.14.12

• characterised in two different ways, using two of the most cited sources in the field. At first, the refractive index was defined using Johnson and Christy dataset [33]. Subsequently, the same simulation was repeated exploiting data from Wu and co-workers [35]. The result in terms of SPR curve is plotted in

Antimicrobial and mechanical properties of functionalized textile by nanoarchitectured photoinduced Ag@polymer coating

• Jessica Plé,
• Marine Dabert,
• Helene Lecoq,
• Sophie Hellé,
• Lydie Ploux and
• Lavinia Balan

Beilstein J. Nanotechnol. 2023, 14, 95–109, doi:10.3762/bjnano.14.11

• triacrylate monomer, which increases the amount of cross-linked polymer chains compared to the diacrylate monomer (PEG600DA). Moreover, particle stabilization is ensured through interactions with the CO• groups resulting from photoinitiator decomposition [49]. In addition, AgNP interactions with the polymer’s

• This project has benefited from the expertise and the facilities of the Platform MACLE-CVL which was co-funded by the European Union and Centre-Val de Loire Region (FEDER). The authors MD, LP and LB express their thanks to the Agence Nationale de la Recherche (ANR) for financial support under contract