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Search for "material" in Full Text gives 1826 result(s) in Beilstein Journal of Nanotechnology. Showing first 200.

A biomimetic approach towards a universal slippery liquid infused surface coating

  • Ryan A. Faase,
  • Madeleine H. Hummel,
  • AnneMarie V. Hasbrook,
  • Andrew P. Carpenter and
  • Joe E. Baio

Beilstein J. Nanotechnol. 2024, 15, 1376–1389, doi:10.3762/bjnano.15.111

Graphical Abstract
  • reducing the thrombogenicity of a material lies in addressing the intricate layer of protein within blood that adsorbs to any surface it comes into contact with. This layer is responsible for the initiation of host responses such as coagulation or inflammation. To address the body’s reaction to these
  • substrate. Over a decade ago, Lee et al. demonstrated that mussels could adhere to virtually any surface through a molecule called polydopamine (PDA) [19]. The power of PDA lies in its ability to coat a thin layer onto any material, from polymers and metals to glass. The authors also demonstrated the
  • , producing the foundation of a SLIPS material (Figure 1). In this work we propose and characterize a two-step process, forming a SLIPS layer via a sticky PDA film, to modify the surface of three different materials. To test this combination of PDA and SLIPS we used three distinct materials, cylic olefin
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Published 08 Nov 2024

Green synthesis of carbon dot structures from Rheum Ribes and Schottky diode fabrication

  • Muhammed Taha Durmus and
  • Ebru Bozkurt

Beilstein J. Nanotechnol. 2024, 15, 1369–1375, doi:10.3762/bjnano.15.110

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  • were calculated as 566 nm and 5.25 eV, respectively. The ideality factor and the measured barrier height (Φb) of the CDs-based Schottky diode were calculated as 9.1 and 0.364 eV, respectively. The CDs were used as semiconductor material in a Schottky diode, and the diode exhibited rectification
  • synthesis methods to obtain CDs from natural products are generally divided into top-down and bottom-up approaches, depending on the carbon source and the process used. In top-down syntheses, materials of desired size and structure are obtained from a bulk material. In bottom-up syntheses, larger
  • switching speed and low forward voltage [14]. In this study, CDs were synthesized in a single step by hydrothermal synthesis using Rheum Ribes, a natural material, for the first time, and diodes were fabricated using the new CDs. To our knowledge, studies on diodes with CDs obtained from natural materials
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Published 07 Nov 2024

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

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  • deposited onto the heterojunctions through metal thermal evaporation. Material and performance characterization The optical images of heterojunctions were obtained using a microscope (ZEISS, Axio Scope A1). The SHG and PL measurements were performed by using a scanning confocal microscope (WITec, alpha 300R
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Published 06 Nov 2024

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

Graphical Abstract
  • 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
  • of Hf is lower than that of Ti, another widely used TES material. This means that the same amount of energy will give a higher temperature change in hafnium than in titanium-based TES. The listed points make hafnium a promising material for TES development. In this work, Hf/Ti bilayer bridges of
  • resistance of the material and its critical temperature only. For sample A4, RS is 1 Ω/□ and τ0 is 1.5 × 10−5. As the critical temperature TC, we take the value of 125.4 mK, where R becomes zero. The curve with these parameters is shown in Figure 5 (blue curve). As can be seen, it decreases much sharper than
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Published 06 Nov 2024

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

Graphical Abstract
  • and durability. For instance, low-friction coatings inspired by Hymenoptera cuticles can be applied to materials to reduce wear and tear, thereby enhancing performance, and extending the lifespan of the material. Surface roughness can have beneficial effects on the overall aerodynamic characteristics
  • . Additionally, when threatened, these ants possess the remarkable ability to jump several centimeters propelled by the force of their mandibles [69]. Engineers and material scientists can draw inspiration from these natural designs to develop lightweight yet durable components that enhance energy absorption and
  • ., honey bees, bumble bees, and orchid bees) exhibit a pollen basket on the hindlegs called corbicula [136]. Bees pack pollen grains along with vegetal resins and nectar in their corbiculae and take flight with this material without losing the attachment force even under great air drag and movement-derived
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Published 05 Nov 2024

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

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  • Abstract Graphene oxide (GO) undergoes multiple transformations when introduced to biological and environmental media. GO surface favors the adsorption of biomolecules through different types of interaction mechanisms, modulating the biological effects of the material. In this study, we investigated the
  • interaction of GO with tannic acid (TA) and its consequences for GO toxicity. We focused on understanding how TA interacts with GO, its impact on the material surface chemistry, colloidal stability, as well as, toxicity and biodistribution using the Caenorhabditis elegans model. Employing computational
  • -dependent mitigating effect on the toxicity of GO, which can be attributed not only to the surface interactions between the molecule and the material but also to the inherent biological properties of TA in C. elegans. Our findings contribute to a deeper understanding of GO’s environmental behavior and
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Published 30 Oct 2024

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

Graphical Abstract
  • substrates [3][15][16]. While traditional heating methods cause inhomogeneities by slowly distributing the heat from the surface to the core of the material or within the entire volume of the solution, microwaves allow for quick and uniform heating because they can penetrate to a depth depending on the
  • dielectric properties of material [17]. Therefore, instantaneous decomposition of the precursors occurs, leading to the formation of a supersaturated solution. Consequently, appropriate conditions for obtaining materials with well-defined properties (i.e., monodispersed nanoparticles from rapid and brief
  • powders, leading to a mass loss of roughly 35% for SG and 40% for MW. This process is exothermic and observed around 309 °C. During the third phase, between 350 and 500 °C, structural hydroxy groups are removed, and any remaining organic material is burned off, resulting in a mass loss of approximately 11
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Published 28 Oct 2024

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

Graphical Abstract
  • materials [18][19][20]. The limitation of FEBID technology is proximity deposition, also known as the halo effect, where secondary electrons cause unwanted deposition in an area (the halo) significantly larger than the assumed beam spot [21]. If the deposited material is electrically conductive, it can
  • the material parameters provided by the “MEMS” library. The geometry of the model was defined by the technological design. Microfabrication artefacts were not taken into account. The model was analysed in the steady-state study. The solid mechanics and heat transfer modules were used together with the
  • (GIS) for the supply of precursors required in the FEBID processes. In the experiments carried out, trimethyl(methylcyclopentadienyl)platinum(IV) (MeCpPtMe3) was used to deposit the Pt(C) material. Microfabrication of nanostructures and modification of opMEMS, both mechanically and electrically, is
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Published 23 Oct 2024

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

Graphical Abstract
  • particle removal efficiency in intact insects and in insects with ablated grooming devices. The grooming devices are constituted of long setae from which a concave cuticular lamina develops towards the medial side of the leg. Each seta shows a material gradient of resilin from its basal to the distal
  • confocal laser scanning microscopy (CLSM). The eye and antennal grooming behavior of the damselfly Ischnura elegans (Vander Linden, 1820) adults (Odonata, Coenagrionidae) was observed and analyzed to evaluate the particle removal efficiency in intact and ablated insects. Material and Methods Insects
  • scanning electron microscope FE SEM LEO 1525 (ZEISS, Oberkochen, Germany) at 5 kV accelerating voltage. Confocal laser scanning microscopy A CLSM-based method established by Michels and Gorb [37], to analyze material compositions and their gradients in arthropod cuticle by visualizing autofluorescence, was
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Published 16 Oct 2024

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

Graphical Abstract
  • , Zhang et al. successfully applied a layer of Fe3O4(001) on a MgO(001) substrate. The resulting material exhibited saturation magnetization and magnetic moment values of 407 ± 5 emu/cm3 (3.26 ± 0.04 μB/(f.u.)) and 3.31 ± 0.15 μB/(f.u.), respectively [23]. This paper addresses the deposition of Fe3O4 thin
  • interlayer has an effect on the crystallization of the Fe3O4 film. XRD patterns provide further information about the structural properties of a material, such as lattice constant (a), dislocation density (δ), and microstrain (ε). Bragg’s law was used to calculate the d-spacing of the Fe3O4(311) and Fe3O4
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Published 14 Oct 2024

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

Graphical Abstract
  • improved colloidal stability [25][26]. Remarkably, functionalized NPs were stable in a complex medium (cell culture medium and human plasma) and showed greater potential for recognition by tumor cells. Material and Methods Materials Tetraethyl orthosilicate (TEOS, 98%), (3-aminopropyl)triethoxysilane
  • compound possibly prevents these interactions, ensuring the colloidal stability of NPs without increasing hemolysis. It is noteworthy that for a material to be considered hemolytic, it must cause a percentage of hemolysis greater than 5% [36]. When the incubation was performed in DMEM (10% FBS), no
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Published 07 Oct 2024

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

Graphical Abstract
  • , offering a potent solution for dye remediation [28]. In our ongoing research, we synthesized for the first time AuNPs using GluN molecules, serving as both interaction agents to cross-link Ca-Alg gelispheres and reducing agents, thereby providing a novel material for the stabilization of AuNPs. The
  • at the SPR band, indicative of increased AuNP formation, while the λmax values exhibited insignificant changes (Figure 2A,B). However, at higher Au3+-to-gel ratios (9%), we observed the presence of solid material after synthesis, likely due to nanocomposite aggregation. Therefore, to achieve
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Published 04 Oct 2024

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

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  • , finite element simulations, and numerical modelling results and compared to experiments. The results indicate that with lower accelerator voltages, higher ion beam currents in the nanoampere range can be used to pattern or image soft material and non-resin-embedded biological samples with increased
  • by milling a TEM lamella and assessing the ion beam-induced heat damage in collagen. Purified collagen was selected as the experimental test material for two main reasons. First, it is the principal component of skin, for which well-documented literature values are readily available [21]. Second
  • lower thermal conductivity than skin. The theoretical work presented here assumes an isotropic and homogenous and flat specimen. Samples are generally more complex, exhibiting different sample topographies as well as material anisotropies. These factors are likely to play a crucial role, and future work
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Published 27 Sep 2024

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

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  • researched thermosensitive polymers [21][24]; it is widely utilized in controlled drug release experiments [26][27][28] as its lower critical solution temperature (LCST) of 32 °C is near the body temperature [21]. It has been reported that vinyl imidazole (VIm) is a pH-responsive material [29]. The
  • tumors [35][36] and retained longer than negatively charged and/or neutral structures [36]. This phenomenon demonstrates the potential of utilizing these SNPs in biomedicine. DOX loading to SNPs One of the most important points when designing a DD material is its drug-carrying capacity because a
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Published 26 Sep 2024

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

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  • high biological activity in plants [28] and within mitochondrial dynamics [29]. Since the evaluation of novel drugs is a task that requires significant human and material resources, innovative strategies have been formulated as alternatives. Quantitative structure–activity and quantitative structure
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Published 19 Sep 2024

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

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  • Anup Shrivastava Shivani Saini Dolly Kumari Sanjai Singh Jost Adam Computational Materials and Photonics (CMP), Department of Electrical Engineering and Computer Science, University of Kassel, Kassel, Germany Computational Nano-Material Research Lab (CNMRL), Indian Institute of Information
  • characteristics of group IV–VI dichalcogenides are yet to be thoroughly investigated. This manuscript reports on monolayer Ge2Se2 (a group IV–VI dichalcogenide), its optoelectronic behavior, and its potential application in photovoltaics. When employed as a hole transport layer, the material fosters an
  • astonishing device performance. We use ab initio modeling for the material prediction, while classical drift–diffusion drives the device simulations. Hybrid functionals calculate electronic and optical properties to maintain high accuracy. The structural stability has been verified using phonon spectra. The E
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Published 11 Sep 2024

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

Graphical Abstract
  • valuable products such as formaldehyde (HCHO), methanol (CH3OH), and other value-added oxygenates, which serve as essential precursors in various manufacturing and production processes [18][19]. The n-type semiconductor titanium dioxide (TiO2) has been discovered as a potential photocatalyst material
  • performance of the TiO2/Si composite with previous photocatalysts. Supporting Information Supporting Information File 66: Additional figures. Acknowledgements We acknowledge Material projects for using the TiO2 and Si CIF files for the structures in the graphical abstract. The TiO2 structure was reproduced
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Published 02 Sep 2024

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

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  • Katja Hoflich Krzysztof Mackosz Chinmai S. Jureddy Aleksei Tsarapkin Ivo Utke Ferdinand-Braun-Institut (FBH), Gustav-Kirchhoff-Str. 4, 12489 Berlin, Germany Laboratory of Mechanics for Materials and Nanostructures, Empa – Swiss Federal Laboratories for Material Science and Technology
  • fabrication of nano-optical components, where the actual geometry in combination with the material composition governs the optical response of the device [13]. However, typically a dominant carbon portion is present in the deposit due to the use of organometallic precursors [9][14], which poses practical
  • functionality [23][24]. Here, skin depth refers to the penetration depth of an electromagnetic field into a (non-transparent) metallic material. While pure metal deposition by direct electron beam writing was demonstrated for gold precursors with inorganic ligands [25][26], high purity comes often at the
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Published 26 Aug 2024

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

Graphical Abstract
  • , biocompatibility, biodegradability, and water solubility of alginate have expanded opportunities in material and biomedical sciences. Recently, research on alginate-based nanoparticles and their applications has begun. These materials are gaining popularity because of their wide usage potential in the biomedical
  • body, as they are antimicrobial, biodegradable, and non-toxic [22]. Biopolymeric nanoparticles are a very effective material for producing biosensors. In today’s world, people need sensors to monitor various types of pollution. Food contamination with infectious microorganisms or air and water
  • therapy [78]. Alginate-based fully natural nanoparticles were developed and used for cancer treatment. Pakistani scientists investigated amygdalin in an alginate–chitosan-based matrix [79]. Amygdalin is a natural material and it has very strong anticancerous activity. Scientists achieved over 90% drug
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Published 22 Aug 2024

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

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  • implications for developing more efficient and stable SERS substrates for chemical detection applications. Keywords: dimethyl methyl phosphonate; laser material interaction; metal nanoparticles; picosecond laser ablation; SERS; thiram; Introduction Metal nanoparticles (NPs) are versatile materials widely
  • media [27][28][29]. The SERS substrate efficiency mainly depends on the material, size, and shape of the NPs. Recent terrorist activities involving explosives and chemical warfare agents highlight the urgent need for sensitive and selective chemical sensors. These sensors must be using low power and be
  • conditions. To avoid confusion, the names of the ablated samples and their descriptions are provided in Table 1. Preparation of filter-paper-based flexible SERS and SERS measurements Flexible substrates were fabricated using Whatman FP as the base material, which was cut into small squares of 1 cm2 each
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Published 19 Aug 2024

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

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  • between medical implants and living tissues are of great complexity because of the simultaneous occurrence of a wide variety of phenomena. The engineering of implant surfaces represents a crucial challenge in material science, but the further improvement of implant properties remains a critical task. It
  • carefully to ensure reproducible production protocols. The next section briefly overviews all nanosized carbon materials since a deep understanding of each material is of capital importance for a comprehensive understanding of their applications at biological interfaces. Graphene and graphene-related
  • materials In 2008, Lee and co-workers [32] stated that neat graphene was the strongest material ever tested with a tensile strength of 131 GPa and a Young’s modulus close to 1 TPa. The reason for these properties of graphene is the stability of the π-bond network around the hexagonal structures of carbon
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Published 16 Aug 2024

Bolometric IR photoresponse based on a 3D micro-nano integrated CNT architecture

  • Yasameen Al-Mafrachi,
  • Sandeep Yadav,
  • Sascha Preu,
  • Jörg J. Schneider and
  • Oktay Yilmazoglu

Beilstein J. Nanotechnol. 2024, 15, 1030–1040, doi:10.3762/bjnano.15.84

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  • core of non-cryogenic IR microbolometers is the fundamental principle of absorbing incident IR radiation and converting it to heat. This conversion process results in a change in the resistance of the active material, which, in turn, is related to the temperature coefficient of resistance (TCR) of the
  • material. The electrical conductivity of a vertically aligned CNT structure is defined by the intrinsic conductivity along the CNTs and the tunneling at the CNT junctions. The vertical electrical conduction is based on long conduction paths along the CNTs and few junction contacts, while the lateral
  • quantitative measure of the device’s ability to transduce absorbed IR radiation into an electrical signal [18]. Regarding CNT-based microbolometer systems, the responsivity is influenced by a number of factors inherent to the CNT material and the device architecture. Both samples were characterized using the
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Published 15 Aug 2024

Entry of nanoparticles into cells and tissues: status and challenges

  • Kirsten Sandvig,
  • Tore Geir Iversen and
  • Tore Skotland

Beilstein J. Nanotechnol. 2024, 15, 1017–1029, doi:10.3762/bjnano.15.83

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  • of new types of NPs, there is a knowledge gap when it comes to our understanding of the interaction of NPs with both cells and tissues. However, it is well known that NP properties, such as surface charge, size, and the material they are composed of can affect cellular uptake, biodistribution, and
  • cell layer in this manner when it comes to size, charge, material, and NP-associated ligands. In vivo there are also a number of challenges regarding studies of distribution, half-life, and long-term effects. Furthermore, there is a major challenge in the field of NP research regarding the fact that
  • different types of material, and even NPs with slight differences in chemical composition but having the same size and zeta potential have turned out to have very different effects on cells. They have for instance very different effects on autophagy in a cellular system [73], and it can be difficult to
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Published 12 Aug 2024

Atomistic insights into the morphological dynamics of gold and platinum nanoparticles: MD simulations in vacuum and aqueous media

  • Evangelos Voyiatzis,
  • Eugenia Valsami-Jones and
  • Antreas Afantitis

Beilstein J. Nanotechnol. 2024, 15, 995–1009, doi:10.3762/bjnano.15.81

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  • compared to the atomic mobility in a dense crystal/amorphous bulk material. For the Au NP with a diameter of 2 nm, a similar steep drop takes place at even lower temperatures of 500 and 600 K. This large shift in the transition temperature indicates that the NP diameter of 2 nm is smaller than a critical
  • and 8 nm is noted. Nevertheless, the gap between the NP with 8 nm diameter and the bulk material is large enough to suggest that finite-size effects as well as geometrical deviations from a flat surface are strong for the considered diameters. With the knowledge of the coordination number and the
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Published 07 Aug 2024

Recent progress on field-effect transistor-based biosensors: device perspective

  • Billel Smaani,
  • Fares Nafa,
  • Mohamed Salah Benlatrech,
  • Ismahan Mahdi,
  • Hamza Akroum,
  • Mohamed walid Azizi,
  • Khaled Harrar and
  • Sayan Kanungo

Beilstein J. Nanotechnol. 2024, 15, 977–994, doi:10.3762/bjnano.15.80

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  • ). 1.1 Motivation of this review The development of advanced bioelectronic technologies involves exploration of novel material systems as well as emerging device architectures. However, an accurate assessment of different device architectures and their design criteria requires a systematic modeling of
  • ]. This structure uses two surrounding nanogap cavities separated by HfO2 as a high-k dielectric material and SiO2 as an interface layer. It has been reported that this structure offers higher sensitivity compared to that of the dual-material JL MOSFET-biosensor proposed by Ahangari et al. [74] and the
  • biosensing applications. Figure 9 shows the 2D representation of NW TFET-based biosensors. In this structure, a double gate and two similar nanocavity regions were created to immobilize targeted biomolecules. A high-k material was implemented between the gate–metal and channel–source–drain regions. Besides
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Published 06 Aug 2024
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