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Search for "film" in Full Text gives 1115 result(s) in Beilstein Journal of Nanotechnology. Showing first 200.

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

Graphical Abstract
  • , a large number of materials have been reported as ETLs/HTL materials, such as carbon [15], copper iodide [16], CuSbS2, NiO, CuSCN [17], ZnO, and CdS [18]. These materials promote efficient extraction of charge carriers and suppress recombination between the perovskite film and the electrodes. But in
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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
  • min. The etched p-Si NWs substrate was eventually washed with DI water and dried under N2 flow, as shown in Figure 9. Second, the as-prepared SiNWs sample was transferred to the chamber of an ALD system (R200 Advanced Picosun, 2013) for TiO2 thin film deposition. The TiO2 thin film deposition was
  • (HAL-320). First, the reactor containing the photocatalytic thin film samples was evacuated using a vacuum pump for 10 min and filled with a mixture of CH4/air (4.5/0.5 pressure ratio). The pressure ratio of the gas mixture was varied to study gas composition-dependent efficiency. The total pressure of
  • spectrometer (DRS-UV, Shimazu UV-2450). The chemical structure of the catalyst surface was analyzed using a Raman spectrometer (excitation of 532 nm, ANDOR Monora 500i). The surface wettability of the thin film sample was measured using a static contact angle system (Biosin Scientific), as shown in Supporting
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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

Graphical Abstract
  • the growth of silver particles on the surface. While these effects complicate the application for 3D printing, the unique deposit structure with a thin, compact silver film beneath the deposit body is interesting from a fundamental point of view and may offer additional opportunities for applications
  • cluster by enhanced diffusion. Finally, the second halo region (H2) depicts similar particle sizes around below 20 nm sitting on top of larger bright areas of 50–250 nm. The composition of the different halo regions was studied by EDX. Because of the rich morphology observed in the deposit, no thin-film
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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
  • easily adsorb H2O molecules to generate hydrogen bonds. These adsorbed H2O molecules considerably improve the SAW sensor’s mass loading and signal responses. The authors compared SEM images and frequency responses, and they found that a single layer of sodium alginate film is best for this SAW humidity
  • sensor. Another fluorescence-based smart sensor from alginate nanofilms was prepared [122]. Scientists proved that relative humidity could be detected using a guar gum–sodium alginate (GGSA) nanocomposite film. The study found that the fluorescence of biocomposite films under UV light varies at various
  • relative humidity levels. Fluorescence quenching occurs at high relative humidity, whereas the fluorescence intensity in the nanocomposite film rises at low humidity. A fluorescence spectrophotometer was used to examine the change in fluorescence intensity of the nanocomposite film at different relative
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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

Graphical Abstract
  • affordable and accessible fabrication methods which guarantee stability and reproducibility along with accessible sample collection of SERS substrates. There has been significant interest in utilizing flexible materials such as paper, nitrocellulose, polymer film, cotton fabrics, adhesive tape, glass fibers
  • a smartphone application to detect DMMP. They detected DMMP at a concentration of 1g/L (≈8 mM) using a Raman excitation of 532 nm. Wang and co-workers [73] developed a novel method using thin water film confinement to enhance Raman detection of weakly interacting nerve agent simulants, such as DMMP
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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

Graphical Abstract
  • temperature because the higher number of phonons increases the efficiency of thermal transport [75]. NDs show also exceptional mechanical strength and low chemical reactivity, making them sound candidates for thin film coatings [76]. These properties are counterbalanced by a low electrical conductivity due to
  • deposition (PVD), and in situ formation through laser treatments. CVD offers several advantageous features such as a high degree of control over the deposition process. CVD involves the deposition of a thin film of material onto a substrate through homogeneous or heterogeneous reactions [79]. Homogeneous
  • thickness and some morphological properties of the deposited nanostructured film can be controlled by adjusting deposition time, substrate temperature, and deposition rate. The response of biological surfaces to non-biological materials The first challenge in developing biomedical implants is related to
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Published 16 Aug 2024

Beyond biomimicry – next generation applications of bioinspired adhesives from microfluidics to composites

  • Dan Sameoto

Beilstein J. Nanotechnol. 2024, 15, 965–976, doi:10.3762/bjnano.15.79

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  • film sheets combine under vacuum, offers more resilience and strength. However, vacuum jamming can present problems due to leaks, power consumption, noise from pumps, and the ultimate strength of the parts being limited by coefficients of friction and applied vacuum pressure. My interest in stiffness
  • composites can be found elsewhere [47]; the bending stiffness D is a function of the outer film modulus Ef, the distance between the central axis of those films (defined by the core thickness d and the film thickness t), the modulus of the core Ec, and the width of the composite b. If the “core” is made of
  • increase for the adhered composite compared to its unadhered state can be approximated as: For a film thickness merely one tenth that of the core material, we would expect approximately a 30-times increase in bending stiffness, simply by bonding two pieces of biomimetic tape. In practice, this also works
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Perspective
Published 05 Aug 2024

Therapeutic effect of F127-folate@PLGA/CHL/IR780 nanoparticles on folate receptor-expressing cancer cells

  • Thi Ngoc Han Pham,
  • Phuong-Thao Dang-Luong,
  • Hong-Phuc Nguyen,
  • Loc Le-Tuan,
  • Xuan Thang Cao,
  • Thanh-Danh Nguyen,
  • Vy Tran Anh and
  • Hieu Vu_Quang

Beilstein J. Nanotechnol. 2024, 15, 954–964, doi:10.3762/bjnano.15.78

Graphical Abstract
  • /IR780 (10 μL) suspension was loaded on a silica film for 1 min, and water was allowed to evaporate. Then, the nanoparticles were coated with titanium, and the SEM images were acquired using a FE-SEM S4800 HITACHI, Japan. Drug loading efficiency The F127-folate@PLGA/CHL/IR780 suspension was freeze-dried
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Published 31 Jul 2024

Investigation on drag reduction on rotating blade surfaces with microtextures

  • Qinsong Zhu,
  • Chen Zhang,
  • Fuhang Yu and
  • Yan Xu

Beilstein J. Nanotechnol. 2024, 15, 833–853, doi:10.3762/bjnano.15.70

Graphical Abstract
  • of lotus leaves [4]. A thin gas film captured by the superhydrophobic structure creates a slip interface between gas and liquid, which effectively improves the drag reduction and antifouling performance of lotus leaves [5]. However, the structures on biological surfaces are rather complex and not
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Published 10 Jul 2024

Electrospun polysuccinimide scaffolds containing different salts as potential wound dressing material

  • Veronika Pálos,
  • Krisztina S. Nagy,
  • Rita Pázmány,
  • Krisztina Juriga-Tóth,
  • Bálint Budavári,
  • Judit Domokos,
  • Dóra Szabó,
  • Ákos Zsembery and
  • Angela Jedlovszky-Hajdu

Beilstein J. Nanotechnol. 2024, 15, 781–796, doi:10.3762/bjnano.15.65

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  • al. investigated polyvinylpyrrolidone (PVP) film doped with silver and zinc oxide nanoparticles. They reported that the presence of the nanoparticles increased the fiber diameter of the PVP polymer film [47]. Evaluation of mechanical tests For wound dressing applications, mechanical properties
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Published 02 Jul 2024

Effect of repeating hydrothermal growth processes and rapid thermal annealing on CuO thin film properties

  • Monika Ozga,
  • Eunika Zielony,
  • Aleksandra Wierzbicka,
  • Anna Wolska,
  • Marcin Klepka,
  • Marek Godlewski,
  • Bogdan J. Kowalski and
  • Bartłomiej S. Witkowski

Beilstein J. Nanotechnol. 2024, 15, 743–754, doi:10.3762/bjnano.15.62

Graphical Abstract
  • . Despite the existence of numerous methods for thin film growth based on various physical and chemical phenomena, it remains acknowledged that these techniques do not yield ideal outcomes in terms of applications in any area [16]. Therefore, comprehending the potential and limitations of these different
  • . Conversely, direct thin film growth through the hydrothermal approach is outlined in [44][45]. In a different study [46], CuO films were grown on glass substrates coated with CuHNO4 through 4, 8, and 12 h long hydrothermal treatments of copper hydroxide nitrate suspension at 200 °C. Another example is the
  • power = 3.5 kW) up to a boiling temperature of ca. 95 °C and boiled for 30 s. After this, the sample was removed from the vessel and cleaned in an ultrasonic cleaner in isopropanol for 30 s and subsequently dried with nitrogen. The resultant as-grown film underwent rapid thermal annealing (RTA
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Published 24 Jun 2024

Functional fibrillar interfaces: Biological hair as inspiration across scales

  • Guillermo J. Amador,
  • Brett Klaassen van Oorschot,
  • Caiying Liao,
  • Jianing Wu and
  • Da Wei

Beilstein J. Nanotechnol. 2024, 15, 664–677, doi:10.3762/bjnano.15.55

Graphical Abstract
  • plant’s surface. While the combination of hydrophilic tips with superhydrophobic structures enables stable air film retention underwater, some animals exploit superhydrophobic surfaces for various functions on or under the water surface. For example, water striders (Gerridae spp.) possess superhydrophobic
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Published 06 Jun 2024

Exfoliation of titanium nitride using a non-thermal plasma process

  • Priscila Jussiane Zambiazi,
  • Dolores Ribeiro Ricci Lazar,
  • Larissa Otubo,
  • Rodrigo Fernando Brambilla de Souza,
  • Almir Oliveira Neto and
  • Cecilia Chaves Guedes-Silva

Beilstein J. Nanotechnol. 2024, 15, 631–637, doi:10.3762/bjnano.15.53

Graphical Abstract
  • -thermal plasma exfoliation process starting from micrometer-sized TiN powder. The resulting product exhibited a plate-like thin film morphology with an enlarged d-spacing of the (200) crystallographic planes and a relaxation of the Raman vibrational modes. While the cubic structure and chemical
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Published 31 May 2024

AFM-IR investigation of thin PECVD SiOx films on a polypropylene substrate in the surface-sensitive mode

  • Hendrik Müller,
  • Hartmut Stadler,
  • Teresa de los Arcos,
  • Adrian Keller and
  • Guido Grundmeier

Beilstein J. Nanotechnol. 2024, 15, 603–611, doi:10.3762/bjnano.15.51

Graphical Abstract
  • , the partial pressure of argon was set to 0.1 mbar and the partial pressure of oxygen was set to 0.3 mbar. The monomer partial pressure was set to 0.05 mbar. The high partial pressure of oxygen in a ratio of 3:1 promotes the formation of SiOx structures. The film thickness was measured with a quartz
  • crystal microbalance (QCM) during deposition. Samples were prepared with a SiOx thickness of 5 nm and 50 nm. The PECVD process is described elsewhere [16]. Surface and thin film analysis The infrared spectroscopic studies were performed using an Anasys NanoIR 3s system from Bruker Nano GmbH, Germany
  • peak at 103.5 eV, which approximately corresponds to silicon oxide [19]. However, due to the impossibility to fix the BE scale in this case due to the nonconducting nature of the samples [20], the chemical identification of the oxide film is done by evaluation of the BE difference between the O 1s and
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Published 24 May 2024

Cholesterol nanoarchaeosomes for alendronate targeted delivery as an anti-endothelial dysfunction agent

  • Horacio Emanuel Jerez,
  • Yamila Roxana Simioni,
  • Kajal Ghosal,
  • Maria Jose Morilla and
  • Eder Lilia Romero

Beilstein J. Nanotechnol. 2024, 15, 517–534, doi:10.3762/bjnano.15.46

Graphical Abstract
  • -O-phytanylglycerol] (SDGD-5PA) (Figure 1). Preparation and characterization of nanovesicles In a manner analogous to [29], nanoarchaeosomes made of TPA (nanoARC) and of TPA/Chol 7:3 w/w (nanoARC-Chol), and nanoliposomes made of HSPC/Chol 7.5:2.5 w/w, were prepared by the film hydration method. To
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Published 13 May 2024

Fabrication of nanocrystal forms of ᴅ-cycloserine and their application for transdermal and enteric drug delivery systems

  • Hsuan-Ang Tsai,
  • Tsai-Miao Shih,
  • Theodore Tsai,
  • Jhe-Wei Hu,
  • Yi-An Lai,
  • Jui-Fu Hsiao and
  • Guochuan Emil Tsai

Beilstein J. Nanotechnol. 2024, 15, 465–474, doi:10.3762/bjnano.15.42

Graphical Abstract
  • were prepared for in vivo PK study. The detailed compositions for the capsule formulations are described next. Enteric capsule formulation F: Kollicoat MAE 30 DP (BASF pharma), a reliable, high-performance film coating based on methacrylic acid-ethyl acrylate copolymer (1:1), is specifically designed
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Published 25 Apr 2024

Superconducting spin valve effect in Co/Pb/Co heterostructures with insulating interlayers

  • Andrey A. Kamashev,
  • Nadir N. Garif’yanov,
  • Aidar A. Validov,
  • Vladislav Kataev,
  • Alexander S. Osin,
  • Yakov V. Fominov and
  • Ilgiz A. Garifullin

Beilstein J. Nanotechnol. 2024, 15, 457–464, doi:10.3762/bjnano.15.41

Graphical Abstract
  • to the literature, the formation of an oxide on the surface of the Pb film requires significantly higher temperatures and pressures, and much longer exposition times [45][46][47]. Finally, all samples were covered with a protective Si3N4 layer. The deposition rates were as follows: 0.5 Å/s for Co1
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Published 25 Apr 2024

Heat-induced morphological changes in silver nanowires deposited on a patterned silicon substrate

  • Elyad Damerchi,
  • Sven Oras,
  • Edgars Butanovs,
  • Allar Liivlaid,
  • Mikk Antsov,
  • Boris Polyakov,
  • Annamarija Trausa,
  • Veronika Zadin,
  • Andreas Kyritsakis,
  • Loïc Vidal,
  • Karine Mougin,
  • Siim Pikker and
  • Sergei Vlassov

Beilstein J. Nanotechnol. 2024, 15, 435–446, doi:10.3762/bjnano.15.39

Graphical Abstract
  • NW networks is in highly flexible transparent film heaters [15]. In recent years, Ag NWs have garnered attention as a key element in neuromorphic computing devices [16]. In the context of the applications mentioned, Ag NWs are subjected to elevated temperatures caused by Joule heating [17]. Moreover
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Published 22 Apr 2024

Potential of a deep eutectic solvent in silver nanoparticle fabrication for antibiotic residue detection

  • Le Hong Tho,
  • Bui Xuan Khuyen,
  • Ngoc Xuan Dat Mai and
  • Nhu Hoa Thi Tran

Beilstein J. Nanotechnol. 2024, 15, 426–434, doi:10.3762/bjnano.15.38

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  • located at 390 nm, which is suitable for SERS applications with 532 nm laser excitation. Besides, the shape of the UV–vis spectrum is in accordance with Mie scattering theory calculations, as reported in [39], proving the existence of Ag NPs in the solution. Moreover, the XRD pattern of the thin film
  • thin film (Figure 3B). The uniform distribution of silver shows the uniformity of Ag NPs-DES thin film on the glass substrate, which is crucial for the applicability of this material. NFT detection The most fundamental component of a SERS-based biosensor is its SERS substrate. It directly affects the
  • SERS performance of the biosensor [6]. Herein, the Ag NPs-DES thin film with the superiorly uniform Ag NPs-DES coating can be used as a SERS substrate for the analysis of antibiotics. First, residue tracing of nitrofurantoin (NFT) has been conducted in the range from 10−3 M down to 10−8 M (Figure 4A
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Published 16 Apr 2024

Unveiling the nature of atomic defects in graphene on a metal surface

  • Karl Rothe,
  • Nicolas Néel and
  • Jörg Kröger

Beilstein J. Nanotechnol. 2024, 15, 416–425, doi:10.3762/bjnano.15.37

Graphical Abstract
  • and, presumably, coated with a Au film. The tip shape was further sharpened by single-atom transfers from the tip to the sample surface [31][32][33][34][35][36]. Topographic STM data were recorded in constant-current as well as constant-height modes with the bias voltage applied to the sample
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Published 15 Apr 2024

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

Graphical Abstract
  • , which was constructed in-house and automated using Python. Then, sheet resistance measurements under externally applied strain are discussed. Raman spectroscopy of the NCG under strain is studied, which gives insights into the distribution of strain in the film. Utilizing electrical and optical
  • ; subsequently, it was transferred onto a 100 μm thick PET substrate. For more details please see the Experimental section. Measured piezoresistance curves (with forward and reverse sweep) for a 5 nm thick patterned NCG film on the PET substrate are shown in Figure 2a. Sheet resistance values are plotted against
  • flexibility, the NCG film was grown on both sides of the glass substrate. There are three reasons for that. First, the negative thermal expansion coefficient of NCG prevents the release of stress initially present in the glass [25]. Second, the film protects the glass from any corrosion from water if the
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Published 08 Apr 2024

Modulated critical currents of spin-transfer torque-induced resistance changes in NiCu/Cu multilayered nanowires

  • Mengqi Fu,
  • Roman Hartmann,
  • Julian Braun,
  • Sergej Andreev,
  • Torsten Pietsch and
  • Elke Scheer

Beilstein J. Nanotechnol. 2024, 15, 360–366, doi:10.3762/bjnano.15.32

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  • Discussion The AAO template was fabricated by directly anodizing a ca. 1 µm thick aluminum (Al) film on a silicon (Si) substrate covered with 200 nm SiO2 and patterned Ti/Au (5/50 nm) bottom electrodes. It has pores with a diameter of around 35 nm, an interpore distance of around 50 nm, and a height of
  • the surface area of the AAO template (or Si substrate) is isolated from the bottom electrodes and the magnetic nanowires, thereby largely improving the flexibility for the design of the top electrodes. After removing the overgrowth by a thin blade or milling in argon plasma, a thick Al film of 180 nm
  • was patterned to build the top electrode by thermal evaporation at a large deposition rate (>3 Å/s) to ensure quick and continuous film formation and, thus, to efficiently avoid Al to be deposited into the pores. Therefore, only the nanowires the top of which have reached the upper surface of the AAO
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Published 03 Apr 2024

Controllable physicochemical properties of WOx thin films grown under glancing angle

  • Rupam Mandal,
  • Aparajita Mandal,
  • Alapan Dutta,
  • Rengasamy Sivakumar,
  • Sanjeev Kumar Srivastava and
  • Tapobrata Som

Beilstein J. Nanotechnol. 2024, 15, 350–359, doi:10.3762/bjnano.15.31

Graphical Abstract
  • , bandgap, and electrical conductivity, to a large extent by controlling the cationic oxidation state and the film stoichiometry [2]. As a matter of fact, adjustments in the film stoichiometry and microstructure are experimentally viable by the choice of a suitable growth technique [9][10][11]. As a result
  • , film crystallinity and compositional variations in such films can also be adjusted as a function of the growth angle [27][28], making GLAD a promising approach to yield nanostructured (NS) films [29][30][31]. Electronic devices consisting of multilayers often require information on surface
  • −7 mbar). The thickness of the films was measured using a surface profilometer (Ambios, XP 200). The surface morphology of the as-deposited and the annealed films was acquired using tapping mode AFM (Asylum Research). AFM images were recorded at different places on each sample to confirm the film
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Published 02 Apr 2024

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

Graphical Abstract
  • modes is proposed to evaluate the surface coverage for each N (i.e., the ratio between the surface covered by exactly N layers and the total surface) in DLI-PP-CVD MoS2 samples. Keywords: molybdenum disulfide; number of layers; Raman spectroscopy; thin film; transition metal dichalcogenides
  • . However, atomic force microscopy revealed that they are constituted of nanoflakes (with a lateral size of typically 50 nm) with possibly a distribution of thicknesses. Furthermore, depending on the synthesis conditions, the MoS2 surface coverage can be incomplete, and the thin film average thickness can
  • contaminations or deposition of others species would have a different impact on the Raman intensity coming from MoS2 in the film and on the one coming from the Si substrate underneath the deposited thin film. It is, thus, expected that the measurements on contaminated or highly defective MoS2 thin films will
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Published 07 Mar 2024

Ultrasensitive and ultrastretchable metal crack strain sensor based on helical polydimethylsiloxane

  • Shangbi Chen,
  • Dewen Liu,
  • Weiwei Chen,
  • Huajiang Chen,
  • Jiawei Li and
  • Jinfang Wang

Beilstein J. Nanotechnol. 2024, 15, 270–278, doi:10.3762/bjnano.15.25

Graphical Abstract
  • metal crack sensors that exhibit exceptional performance in terms of ultrahigh sensitivity and ultrahigh stretchability. This is achieved by incorporating a helical structure into the substrate through a modeling process and, subsequently, depositing a thin film of gold onto the polydimethylsiloxane
  • substrate via sputter deposition. The metal thin film is then pre-stretched to generate microcracks. The sensor demonstrates a remarkable stretchability of 300%, an exceptional sensitivity with a maximum gauge factor reaching 107, a rapid response time of 158 ms, minimal hysteresis, and outstanding
  • film deposited on a microstructured polydimethylsiloxane (PDMS) substrate [21]. The sensor exhibits exceptional strain sensitivity, allowing for stretching of up to 20% strain. Liu et al. have successfully developed a strain sensor that exhibits high-performance characteristics [22]. A fish-scale-like
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Published 01 Mar 2024
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