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Search for "flow" in Full Text gives 938 result(s) in Beilstein Journal of Nanotechnology. Showing first 200.

Enhancing mechanical properties of chitosan/PVA electrospun nanofibers: a comprehensive review

  • Nur Areisman Mohd Salleh,
  • Amalina Muhammad Afifi,
  • Fathiah Mohamed Zuki and
  • Hanna Sofia SalehHudin

Beilstein J. Nanotechnol. 2025, 16, 286–307, doi:10.3762/bjnano.16.22

Graphical Abstract
  • , and environment. For electrospinning, factors such as applied electric field, distance between the needle and collector, flow rate, and needle diameter affect the fabrication of the nanofibrous sample. Solution parameters include the types of solvent, polymer concentration, viscosity, and solution
  • nozzles so that the fibers attract instead of repelling each other, or using auxiliary electrodes to control the electric field and concentrate the flow of fiber jets into a smaller deposition area [89]. Multichamber electrospinning Multichamber electrospinning incorporates special nozzle designs to
  • selecting the plasma source and controlling discharge conditions such as voltage, pressure, and gas flow rate, various functional groups can be introduced on the fiber surface, enabling tailored modifications that enhance polymer biocompatibility. Punamshree et al. [162] performed surface modification of
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Published 26 Feb 2025

Emerging strategies in the sustainable removal of antibiotics using semiconductor-based photocatalysts

  • Yunus Ahmed,
  • Keya Rani Dutta,
  • Parul Akhtar,
  • Md. Arif Hossen,
  • Md. Jahangir Alam,
  • Obaid A. Alharbi,
  • Hamad AlMohamadi and
  • Abdul Wahab Mohammad

Beilstein J. Nanotechnol. 2025, 16, 264–285, doi:10.3762/bjnano.16.21

Graphical Abstract
  • , they also reduce compound semiconductors’ redox capacity and pose problems to the continuous flow of electrons and holes because of electrostatic repulsion. A Schottky junction is also formed by combining two different semiconductor materials (Figure 5d). The oxidation capability of Schottky
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Published 25 Feb 2025

Recent advances in photothermal nanomaterials for ophthalmic applications

  • Jiayuan Zhuang,
  • Linhui Jia,
  • Chenghao Li,
  • Rui Yang,
  • Jiapeng Wang,
  • Wen-an Wang,
  • Heng Zhou and
  • Xiangxia Luo

Beilstein J. Nanotechnol. 2025, 16, 195–215, doi:10.3762/bjnano.16.16

Graphical Abstract
  • example, blood flow, oxygen saturation, oxygenated and deoxygenated hemoglobin, oxygen metabolism, and melanin concentration [187][188]. The main limitations of PAI are the slower imaging speed and the decreasing resolution as the depth of imaging is increased [189]. The use of contrast agents can improve
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Published 17 Feb 2025

TiO2 immobilized on 2D mordenite: effect of hydrolysis conditions on structural, textural, and optical characteristics of the nanocomposites

  • Marina G. Shelyapina,
  • Rosario Isidro Yocupicio-Gaxiola,
  • Gleb A. Valkovsky and
  • Vitalii Petranovskii

Beilstein J. Nanotechnol. 2025, 16, 128–140, doi:10.3762/bjnano.16.12

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  • . Despite the still large bandgap, the immobilization of TiO2 on the zeolite matrix, combined with the mesopore structure important for high mass transfer properties, suggests that these materials may be promising catalysts under flow conditions. However, it is necessary to further search for parameters to
  • the mBET method. Thermal gravimetric analysis (TGA) was carried out using a Netzsch STA 449 F1 Jupiter instrument in the temperature range of 40–990 °C at a heating rate of 10 °C/min in an Ar flow of 90 mL/min. 27Al MAS NMR spectra were recorded using a Bruker Avance IIIWB 400 MHz solid-state NMR
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Published 10 Feb 2025

Nanocarriers and macrophage interaction: from a potential hurdle to an alternative therapeutic strategy

  • Naths Grazia Sukubo,
  • Paolo Bigini and
  • Annalisa Morelli

Beilstein J. Nanotechnol. 2025, 16, 97–118, doi:10.3762/bjnano.16.10

Graphical Abstract
  • delivery route despite the potential advantages of local approaches [6]. Once in the bloodstream, NCs are exposed to a wide range of forces, such as fluid shear stress, blood flow, opsonization, excretion, and interaction with the MPS, all of which influence NC stability and delivery. This challenging and
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Published 31 Jan 2025

Modeling and simulation of carbon-nanocomposite-based gas sensors

  • Roopa Hegde,
  • Punya Prabha V,
  • Shipra Upadhyay and
  • Krishna S B

Beilstein J. Nanotechnol. 2025, 16, 90–96, doi:10.3762/bjnano.16.9

Graphical Abstract
  • crucial for understanding the adsorption mechanism in a system and predicting its behavior [17]. Methods Gas sensor analysis with COMSOL Multiphysics To implement the methodology from the flow chart in Figure 1, we begin with pre-processing. During this step, we define the domain with physics modules
  • (reaction engineering, transport of diluted species, laminar flow, and chemistry interface), create the geometry of the sensor within a gas chamber, and select the materials. We then set up the physics with boundary conditions, mesh the geometry using tetrahedral and triangular elements, and define study
  • designed to facilitate gas flow and continuous stirring, ensuring the elimination of concentration gradients and the maintenance of a homogeneous gas mixture inside the chamber. The target gas CO is introduced into the chamber in a Gaussian pulse form. At the start of the experiment (t = 0 s), the sensor
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Published 30 Jan 2025

Instance maps as an organising concept for complex experimental workflows as demonstrated for (nano)material safety research

  • Benjamin Punz,
  • Maja Brajnik,
  • Joh Dokler,
  • Jaleesia D. Amos,
  • Litty Johnson,
  • Katie Reilly,
  • Anastasios G. Papadiamantis,
  • Amaia Green Etxabe,
  • Lee Walker,
  • Diego S. T. Martinez,
  • Steffi Friedrichs,
  • Klaus M. Weltring,
  • Nazende Günday-Türeli,
  • Claus Svendsen,
  • Christine Ogilvie Hendren,
  • Mark R. Wiesner,
  • Martin Himly,
  • Iseult Lynch and
  • Thomas E. Exner

Beilstein J. Nanotechnol. 2025, 16, 57–77, doi:10.3762/bjnano.16.7

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  • . The material and medium categories are used to describe the instance. A physical or chemical change to the nanomaterial that (potentially) alters the physicochemical or biological properties of the material results in a new instance. An instance map then represents a flow chart of the nanomaterial
  • , instance maps visualise the flow of data collection and methodologies, including the biological culture information and chemical pre- and post-exposure data (Figure 4A). The instances in the example in Figure 4 follow the timeline of exposure; at each instance, the nodes depict the data pertaining to that
  • reporting structure following SOPs. Afterwards, these APCs were incubated with the materials generated in section A, and their immunologic activation profile was investigated utilising flow cytometry and enzyme-linked immunosorbent assay. Sections C and E in Figure 8 are quite similar in concept [49] and
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Published 22 Jan 2025

Precursor sticking coefficient determination from indented deposits fabricated by electron beam induced deposition

  • Alexander Kuprava and
  • Michael Huth

Beilstein J. Nanotechnol. 2025, 16, 35–43, doi:10.3762/bjnano.16.4

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  • . Firstly, the sticking coefficient of the molecules stemming from directed and diffuse flow will be different due to the different kinetic energies, as precursor gas from the gas injection system and precursor gas from surrounding surfaces are at different equilibrium temperatures. In other work involving
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Published 13 Jan 2025

Bioinspired nanofilament coatings for scale reduction on steel

  • Siad Dahir Ali,
  • Mette Heidemann Rasmussen,
  • Jacopo Catalano,
  • Christian Husum Frederiksen and
  • Tobias Weidner

Beilstein J. Nanotechnol. 2025, 16, 25–34, doi:10.3762/bjnano.16.3

Graphical Abstract
  • . This reduction is attributed to altered flow dynamics near the super-hydrophobic surface, inhibiting nucleation and growth of scale. Our findings highlight the potential of bioinspired SNF coatings to enhance the performance and longevity of steel surfaces in industrial environments. Keywords
  • the plate corresponding to the flow of oil/water equivalent to 10,000 barrels per day in a 4-inch nominal steel pipe. Figure 2C shows a simulation of the fluid streamlines and shear stress on the samples matching the shear stress value in a 4-inch pipe at a flow rate of 10,000 barrels per day. The
  • shear stress at the plate is reported in Figure 2D for different angular velocities and corresponding volumetric flow rates. Super-hydrophobicity of SNF coatings on steel Figure 3A shows a scanning electron microscopy (SEM) image of a stainless-steel surface coated with SNFs. The wire-type structures
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Published 09 Jan 2025

A nanocarrier containing carboxylic and histamine groups with dual action: acetylcholine hydrolysis and antidote atropine delivery

  • Elina E. Mansurova,
  • Andrey A. Maslennikov,
  • Anna P. Lyubina,
  • Alexandra D. Voloshina,
  • Irek R. Nizameev,
  • Marsil K. Kadirov,
  • Anzhela A. Mikhailova,
  • Polina V. Mikshina,
  • Albina Y. Ziganshina and
  • Igor S. Antipin

Beilstein J. Nanotechnol. 2025, 16, 11–24, doi:10.3762/bjnano.16.2

Graphical Abstract
  • to use. Elution was carried out using 0.05 M K2HPO4, pH 7.4, at a flow rate of 0.5 mL·min−1 and a column temperature of 40 °C with refractive index detection on a 1260 Infinity detector (Agilent, Germany) at an optical unit temperature of 35 °C. Polyacrylic acid standards of 240, 5, and 1.8 kDa (Alfa
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Published 09 Jan 2025

Fabrication of hafnium-based nanoparticles and nanostructures using picosecond laser ablation

  • Abhishek Das,
  • Mangababu Akkanaboina,
  • Jagannath Rathod,
  • R. Sai Prasad Goud,
  • Kanaka Ravi Kumar,
  • Raghu C. Reddy,
  • Ratheesh Ravendran,
  • Katia Vutova,
  • S. V. S. Nageswara Rao and
  • Venugopal Rao Soma

Beilstein J. Nanotechnol. 2024, 15, 1639–1653, doi:10.3762/bjnano.15.129

Graphical Abstract
  • , repetition rate, wavelength, and pulse energy, as is evident from earlier reports [11][18][31], where no such nanofibre formation is reported. However, the formation of nanofibres has been reported in [10][30]. Due to Brownian motion [48], some nuclei and crystals escape from the jet flow and agglomerate [43
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Published 18 Dec 2024

Heterogeneous reactions in a HFCVD reactor: simulation using a 2D model

  • Xochitl Aleyda Morán Martínez,
  • José Alberto Luna López,
  • Zaira Jocelyn Hernández Simón,
  • Gabriel Omar Mendoza Conde,
  • José Álvaro David Hernández de Luz and
  • Godofredo García Salgado

Beilstein J. Nanotechnol. 2024, 15, 1627–1638, doi:10.3762/bjnano.15.128

Graphical Abstract
  • the substrate is 450 to 500 °C for different deposition parameters. In the simulation, the laminar flow of species contributing to the film growth was confirmed, and the simulated concentration profiles of H° and SiO near the filaments and the sources were as expected. H° and SiO are essential species
  • ; chemical reactions; flow dynamics; HFCVD; hot filament chemical vapor deposition; SiOx films; Introduction The growth of materials such as non-stoichiometric silicon oxide (SiOx) is an important step in semiconductor devices development. Control of deposition parameters determines the success of the
  • process and the properties of the films, with the most important parameters being substrate temperature, gas pressure, species concentration, and flow velocity [1]. The structural, optical, and electrical properties of the SiOx, more generally known as silicon-rich oxide (SRO), films are determined by the
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Published 17 Dec 2024

Natural nanofibers embedded in the seed mucilage envelope: composite hydrogels with specific adhesive and frictional properties

  • Agnieszka Kreitschitz and
  • Stanislav N. Gorb

Beilstein J. Nanotechnol. 2024, 15, 1603–1618, doi:10.3762/bjnano.15.126

Graphical Abstract
  • run-off [30][127][128]. Pan et al. [36] tested the effect of erosive surface flow on seeds attached by wet mucilage to the substrate; they summarised that wet (as well as dry) mucilage allowed most species to stay anchored to the substrate. However, the adhesion strength of hydrated mucilage is much
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Published 13 Dec 2024

Electrochemical nanostructured CuBTC/FeBTC MOF composite sensor for enrofloxacin detection

  • Thi Kim Ngan Nguyen,
  • Tien Dat Doan,
  • Huy Hieu Luu,
  • Hoang Anh Nguyen,
  • Thi Thu Ha Vu,
  • Quang Hai Tran,
  • Ha Tran Nguyen,
  • Thanh Binh Dang,
  • Thi Hai Yen Pham and
  • Mai Ha Hoang

Beilstein J. Nanotechnol. 2024, 15, 1522–1535, doi:10.3762/bjnano.15.120

Graphical Abstract
  • developed to detect ENR, including microbiological methods, such as enzyme-linked immunosorbent assay (ELISA) [6], chromatography-mass spectrometry (LC-MS), chromatography (HPLC, UPLC), [3][7][8], flow immunochromatographic assays [9], and fluorescence measurements [10]. However, these methods have high
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Published 28 Nov 2024

Integrating high-performance computing, machine learning, data management workflows, and infrastructures for multiscale simulations and nanomaterials technologies

  • Fabio Le Piane,
  • Mario Vozza,
  • Matteo Baldoni and
  • Francesco Mercuri

Beilstein J. Nanotechnol. 2024, 15, 1498–1521, doi:10.3762/bjnano.15.119

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Published 27 Nov 2024

Polymer lipid hybrid nanoparticles for phytochemical delivery: challenges, progress, and future prospects

  • Iqra Rahat,
  • Pooja Yadav,
  • Aditi Singhal,
  • Mohammad Fareed,
  • Jaganathan Raja Purushothaman,
  • Mohammed Aslam,
  • Raju Balaji,
  • Sonali Patil-Shinde and
  • Md. Rizwanullah

Beilstein J. Nanotechnol. 2024, 15, 1473–1497, doi:10.3762/bjnano.15.118

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  • . Cell cycle analysis and apoptotic studies by flow cytometry revealed much higher apoptotic activity and cellular internalization of CUR-PLHNPs in MCF-7 cells compared to free CUR. Further, the CUR-PLHNPs showed a significantly lower IC50 value (i.e., 7 µg/mL) than free CUR (10.72 µg/mL). Zhao et al
  • against HCT-116 cells, in terms of apoptosis and cell cycle arrest, was assessed using flow cytometry. Comparison with APN suspension showed significant improvements favoring APN-PLHNPs. Additionally, the anticancer mechanism was further explored by examining the gene expression of key signaling molecules
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Published 22 Nov 2024

Lithium niobate on insulator: an emerging nanophotonic crystal for optimized light control

  • Midhun Murali,
  • Amit Banerjee and
  • Tanmoy Basu

Beilstein J. Nanotechnol. 2024, 15, 1415–1426, doi:10.3762/bjnano.15.114

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  • approach takes the form Equation 8 [51]: where U(x) and S(x) are the quantities corresponding to the resultant electric field and phase, respectively. The power flow density across the structure also known as the Poynting vector S(x) is proportional to the square of new field intensity and the spatial
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Published 14 Nov 2024

Various CVD-grown ZnO nanostructures for nanodevices and interdisciplinary applications

  • The-Long Phan,
  • Le Viet Cuong,
  • Vu Dinh Lam and
  • Ngoc Toan Dang

Beilstein J. Nanotechnol. 2024, 15, 1390–1399, doi:10.3762/bjnano.15.112

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  • Torr. After that, the gas mixture of Ar/O2 ≈ 4:1 at a flow rate of ≈300 sccm was introduced and used as a transport gas, which ensured the growth condition to be at atmospheric pressure. The growth was executed at a temperature range of T = 600–700 °C. After growth for 6–10 h, the CVD system was cooled
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Published 11 Nov 2024

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

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  • BSA [36]. Similar surface-induced thrombus properties were observed in other SLIPS applications, where, in comparison to untreated surfaces, SLIPS-treated surfaces under dynamic blood flow yielded significantly lower thrombi weights [4]. Finally, platelet adhesion was quantified from SEM micrographs
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Published 08 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

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  • of the bulk resistivity at room temperature of 3.3 × 10−7 Ω·m [11]. The variation of calculated resistivity between bridges of different sizes is likely not due to physically different film properties, but rather due to rough estimations not taking into account the edge effects for the current flow
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Published 06 Nov 2024

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

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  • . The mobile phase included a mixture of acetonitrile and water (40:60 v/v) at a 0.2 mL/min flow rate. The method was developed using CTAB powder as standard at different concentrations of 0.625, 1.2, 2.5, 5, 10, and 20 µg/mL in water. The blank sample (which consisted only of solvent) was also analyzed
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Published 04 Nov 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

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  • cause leakage, that is, parasitic current flow through the insulating layer. Eliminating the halo effect is virtually impossible; however, the size of the halo can be measured, and its negative effects can be eliminated by proper spacing between conducting FEBID deposits [22]. Another approach is to
  • , 17 pA, 13 ms dwell time, a single line pattern in a single pass with 4 nm pitch, and MeCpPtMe3 precursor at 321 K with a flow rate of 8.5 × 10−4 μm3/s. The pattern line was set to begin on one electrode and end on the other (Figure 7). In between, the nanowire growth proceeded horizontally with an
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Published 23 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

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  • process [14][15]. The impact of substrate temperature, annealing temperature, gas flow rate, and thickness on enhancing the characteristics of Fe3O4 thin films has been examined [15][16][17][18]. The substrates play a crucial role in directing the growth and enhancing the quality of the crystal, resulting
  • ) substrates were prepared by immersing them in a methanol bath at a temperature of 60 °C and drying them in N2 gas flow. Subsequently, the purified substrates were moved into an ultrahigh vacuum (UHV) chamber and underwent a pre-heating process at 600 °C for 30 min in order to eliminate any remaining
  • impurities. The SiO2/Si(100) substrates were immersed in acetone and 2-propanol for a duration of 2 min in an ultrasonic bath. Subsequently, they were immersed in a solution of methanol at a temperature of 60 °C and then dried in N2 gas flow. A 5 nm thick layer of tantalum was deposited on a SiO2/Si(100
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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

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  • Biosystems) liquid chromatography system through a Proxeon nanoelectrospray ion source. Peptides were separated at a flow rate of 300 nL/min in a 2–90% acetonitrile gradient in 0.1% formic acid for a total gradient time of 65 min (35% acetonitrile at 33 min) using a PicoFrit analytical column (20 cm × ID75
  • (DAPI). After that, samples were analyzed on the Operetta High Content Screening System microscope (PerkinElmer Life Sciences). To obtain quantitative information on the internalization of functionalized and non-functionalized SiO2NPs, the flow cytometry technique was used. HaCat and KB cells were
  • of the folate receptor on the surface of KB cells, which increases the probability of receptor binding to the tumor driver on the surface of SiO2NPs-ZW-FO. Importantly, similar results were obtained for incubation times of 3, 6, and 12 h (Supporting Information File 1, Figure S9). The flow cytometry
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Published 07 Oct 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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  • required for the current flow. It is intuitive to have a thick absorber layer for a higher current density. However, because the absorber thickness further affects the recombination rate, optimizing it for optimal device performance is necessary. The impact of varying absorber thickness on the different
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Published 11 Sep 2024
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