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Artykuły w czasopismach na temat „Monolayer”

Autor: Grafiati

Data publikacji: 4 czerwca 2021

Data aktualizacji: 25 lipca 2025

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1

Białkowska, Katarzyna, Małgorzata Bobrowska-Hägerstrand, and Henry Hägerstrand. "Expansion of Phosphatidylcholine and Phosphatidylserine/Phosphatidylcholine Monolayers by Differently Charged Amphiphiles." Zeitschrift für Naturforschung C 56, no. 9-10 (2001): 826–30. http://dx.doi.org/10.1515/znc-2001-9-1024.

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Abstract Monolayer Technique, Nonionic Detergent, Erythrocyte Shape The degree and time-course of expansion of palmitoyloleoylphosphatidylcholine (PC) and bovine brain phosphatidylserine (PS)/PC (75:25, mol/mol) monolayers at 32 mN/m caused by differently charged amphiphiles (detergents) added to the sub-phase buffer (pH 7.4, 22 °C) were followed. Amphiphiles were added to the sub-phase at a concentration/monolayer area corresponding to the concentration/erythrocytes surface area where sphero-echinocytic or sphero-stomatocytic shapes are induced (0.46-14.6 μᴍ). Nonionic, cationic and anionic a

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2

Lu, L., H. Cui, W. Li, H. Zhang, and S. Xi. "Study of the mechanism for controlled crystallization of BaF2 under two kinds of monolayers." Journal of Materials Research 16, no. 8 (2001): 2415–20. http://dx.doi.org/10.1557/jmr.2001.0331.

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Controlled crystallization of BaF2 under two different kinds of monolayers, octadecylamine [CH3(CH2)17NH2] and hexadecanol [CH3(CH2)14CH2OH], has been studied by using x-ray diffraction (XRD) and scanning electron microscope. It was found that the monolayer headgroup, the degree of ionization of the headgroup, etc., had a complicated effect on the selectivity of monolayers for crystal and on the morphology and orientation of crystals grown under the compressed monolayers. At pH = 7.0, XRD analysis showed that (100)-oriented BaF2 crystals were formed under the octadecylamine monolayer, while se

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3

Takeshita, Naoki, Masanari Okuno, and Taka-aki Ishibashi. "Molecular conformation of DPPC phospholipid Langmuir and Langmuir–Blodgett monolayers studied by heterodyne-detected vibrational sum frequency generation spectroscopy." Physical Chemistry Chemical Physics 19, no. 3 (2017): 2060–66. http://dx.doi.org/10.1039/c6cp07800a.

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Heterodyne-detected vibrational sum frequency generation spectroscopy was used to investigate molecular structures of DPPC monolayers on water (Langmuir monolayer) and monolayers on a fused silica substrate (Langmuir-Blodgett [LB] monolayer).

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4

Kajiyama, Tisato. "Novel Concepts of the Aggregation Structure of Organic Monolayers on the Surface of Water." MRS Bulletin 20, no. 6 (1995): 32–38. http://dx.doi.org/10.1557/s0883769400036952.

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Langmuir-Blodgett (LB) films have been applied to molecular electronics, nonlinear optics, and biosensors. Their useful properties can be accessed by using a defect-free monolayer—the precursor of LB films. In order to prepare a defect-free or defect-diminished monolayer, it is necessary to estimate the molecular arrangements and structural defects in the monolayer. The actual structure of monolayers on the surface of water have been proposed on the basis of recent morphological and structural studies. Molecular-aggregation processes or monolayer-formation processes do not always match the gen

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5

Baker, MV, and J. Landau. "Self Assembled Alkanethiolate Monolayers as Thin Insulating Films." Australian Journal of Chemistry 48, no. 6 (1995): 1201. http://dx.doi.org/10.1071/ch9951201.

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Simple devices that contain alkanethiolate monolayers sandwiched between conducting films were prepared by fixing a gold film to the surface of an alkanethiolate monolayer (on a gold substrate) with silver paint. These devices, and similar devices that did not contain alkanethiolate monolayers, were tested as resistors in d.c . circuits. The devices that contained octadecanethiolate monolayers had resistances of approximately 1012 Ω, 10 orders of magnitude higher than the resistance of devices that contained no monolayers. Sulfur- terminated alkanethiolate monolayers were prepared by treatment

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6

Zhang, Bo, Tomas Mikysek, Veronika Cicmancova, et al. "2D GeSe2 amorphous monolayer." Pure and Applied Chemistry 91, no. 11 (2019): 1787–96. http://dx.doi.org/10.1515/pac-2019-0501.

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Abstract In this paper, GeSe2 thin film and glass ingot were prepared in a layered structure. Subsequently, the 2D amorphous monolayers were achieved from layered thin film and layered glass ingot. The thicknesses of monolayers from thin film range from 1.5 nm to 5 nm. And the thickness of monolayer from glass ingot is 7 μm. The fast cooling of material results in the formation of self-assembled monolayers. In the case of thin film, layers are connected with “bridge”. After doping of Ag, the precipitation of nano particles exfoliates the adjacent monolayers which can be further dispersed by et

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7

Pires, Cristiana L., Catarina Praça, Patrícia A. T. Martins, et al. "Re-Use of Caco-2 Monolayers in Permeability Assays—Validation Regarding Cell Monolayer Integrity." Pharmaceutics 13, no. 10 (2021): 1563. http://dx.doi.org/10.3390/pharmaceutics13101563.

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Caco-2 monolayers are a common in vitro model used to evaluate human intestinal absorption. The reference protocol requires 21 days post-seeding to establish a stable and confluent cell monolayer, which is used in a single permeability assay during the period of monolayer stability (up to day 30). In this work, we characterize variations in the tightness of the cell monolayer over the stable time interval and evaluate the conditions required for their re-use in permeability assays. The monolayer integrity was assessed through TEER measurements and permeability of the paracellular marker Lucife

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8

Palada, C., P. Schouten, and C. Lemckert. "Testing the effectiveness of monolayers under wind and wave conditions." Water Science and Technology 65, no. 6 (2012): 1137–41. http://dx.doi.org/10.2166/wst.2012.959.

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Monolayers are highly desirable for their evaporation reducing capabilities due to their relatively minimal cost and ease of application. Despite these positive attributes, monolayers have consistently failed to perform effectively due to the harsh wind and wave conditions prevalent across real-world water reserves. An exhaustive and consistent study testing the influence of wind and wave combinations on monolayer performance has yet to be presented in the literature. To remedy this, the effect of simultaneous wind and wave conditions on a benchmark high-performance monolayer (octadecanol susp

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9

Nguyen, Hoang Tung, Van Long Le, Thi Mai Nguyen, et al. "Temperature Dependence of Optical Properties of MoS2 and WS2 Heterostructures Assessed by Spectroscopic Ellipsometry." Nanomaterials 15, no. 1 (2025): 76. https://doi.org/10.3390/nano15010076.

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We report the complex dielectric function ε = ε1 + iε2 of MoS2/WS2 and WS2/MoS2 heterostructures and their constituent monolayers MoS2 and WS2 for an energy range from 1.5 to 6.0 eV and temperatures from 39 to 300 K. Comparisons between the optical properties of the heterostructures and their monolayers were conducted. Critical-point (CP) energies of the heterostructures were traced back to their origins in the monolayers. Low-temperature measurements confirmed the existence of only three excitonic CPs from 1.5 to 2.5 eV due to the overlap of trion B− of the MoS2 monolayer and exciton A0 of th

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10

Cheng, Wei-Ying, Huei-Ru Fuh, and Ching-Ray Chang. "First-Principles Study for Gas Sensing of Defective SnSe2 Monolayers." Applied Sciences 10, no. 5 (2020): 1623. http://dx.doi.org/10.3390/app10051623.

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We report the interaction between gas molecules (NO2 and NH3) and the SnSe2 monolayers with vacancy and dopants (O and N) for potential applications as gas sensors. Compared with the gas molecular adsorbed on pristine SnSe2 monolayer, the Se-vacancy SnSe2 monolayer obviously enhances sensitivity to NO2 adsorption. The O-doped SnSe2 monolayer shows similar sensitivity to the pristine SnSe2 monolayer when adsorbing NO2 molecule. However, only the N-doped SnSe2 monolayer represents a visible enhancement for NO2 and NH3 adsorption. This work reveals that the selectivity and sensitivity of SnSe2-ba

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11

Cott, G. R. "Modulation of bioelectric properties across alveolar type II cells by substratum." American Journal of Physiology-Cell Physiology 257, no. 4 (1989): C678—C688. http://dx.doi.org/10.1152/ajpcell.1989.257.4.c678.

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Rat alveolar type II cells were cultured on collagen-coated filters (CCF) and human amnionic basement membrane (ABM) to determine the effect of culture substratum on the development of monolayer bioelectric properties. Monolayers cultured on both substrata rapidly developed bioelectric properties with similar time courses, monolayer capacitance values (approximately 1 muF/cm2), current-voltage relationships, and responses to stimulants and inhibitors of active ion transport. Increasing seeding densities tended to increase monolayer bioelectric properties regardless of culture substratum. Monol

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12

Pittaway, P., M. Herzig, N. Stuckey, and K. Larsen. "Biodegradation of artificial monolayers applied to water storages to reduce evaporative loss." Water Science and Technology 72, no. 8 (2015): 1334–40. http://dx.doi.org/10.2166/wst.2015.348.

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Repeat applications of an artificial monolayer to the interfacial boundary layer of large agricultural water storages during periods of high evaporative demand remains the most commercially feasible water conservation strategy. However, the interfacial boundary layer (or microlayer) is ecologically distinct from subsurface water, and repeat monolayer applications may adversely affect microlayer processes. In this study, the natural cleansing mechanisms operating within the microlayer were investigated to compare the biodegradability of two fatty alcohol (C16OH and C18OH) and one glycol ether (

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13

Iritani, Kohei. "Fabrication of monolayer with aggregation-induced emission at the air/water interface." Impact 2022, no. 3 (2022): 21–23. http://dx.doi.org/10.21820/23987073.2022.3.21.

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Existing methods for producing transparent fluorescent materials are adequate for small scale production but unsuitable for larger scales. Assistant Professor Kohei Iritani and his team at the Department of Applied Chemistry, School of Engineering, Tokyo University of Technology, Japan, are working to develop 2D monolayers to overcome this. These monolayers are formed by the self-assembly of organic molecules at the solid/liquid or air/water interface and monolayers with the aggregation-induced emission (AIE) effect have the potential to be used as transparent fluorescent materials. The resear

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14

Chen, Sikai, Bingrui Li, Chaoqi Dai, et al. "Controlling Gold-Assisted Exfoliation of Large-Area MoS2 Monolayers with External Pressure." Nanomaterials 14, no. 17 (2024): 1418. http://dx.doi.org/10.3390/nano14171418.

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Gold-assisted exfoliation can fabricate centimeter- or larger-sized monolayers of van der Waals (vdW) semiconductors, which is desirable for their applications in electronic and optoelectronic devices. However, there is still a lack of control over the exfoliation processes and a limited understanding of the atomic-scale mechanisms. Here, we tune the MoS2-Au interface using controlled external pressure and reveal two atomic-scale prerequisites for successfully producing large-area monolayers of MoS2. The first is the formation of strong MoS2-Au interactions to anchor the top MoS2 monolayer to

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15

Soyer, Nagihan, Sema Salgın, and Uğur Salgın. "Thermodynamic and Structural Properties of Biomimetic Monolayers Containing Cholesterol and Magnetite Nanoparticles." Black Sea Journal of Engineering and Science 8, no. 3 (2025): 7–8. https://doi.org/10.34248/bsengineering.1651121.

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The thermodynamic and structural properties of biomimetic monolayers composed of cholesterol, dipalmitoylphosphatidylcholine, and hydrophobic magnetite (Fe₃O₄) nanoparticles were investigated under varying cholesterol molar fractions and pH conditions (4.8 and 7.4). Langmuir monolayer experiments were performed to analyze surface pressure-area isotherms, excess molecular area, excess Gibbs free energy of mixing, and compressibility modulus to assess lipid monolayer phase behavior, molecular organization, and mechanical stability. The results confirm that cholesterol enhances monolayer condensa

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16

Wasserman, Stephen R., Hans Biebuyck, and George M. Whitesides. "Monolayers of 11-trichlorosilylundecyl thioacetate: A system that promotes adhesion between silicon dioxide and evaporated gold." Journal of Materials Research 4, no. 4 (1989): 886–92. http://dx.doi.org/10.1557/jmr.1989.0886.

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The use of sulfur-containing organic monolayer films improves adhesion between gold and silicon dioxide. The structures of these monolayers were analyzed using contact angle, ellipsometry, and XPS. The zone of adhesive failure was at or near the gold-monolayer interface.

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17

Şologan, Maria, Cristina Cantarutti, Silvia Bidoggia, Stefano Polizzi, Paolo Pengo, and Lucia Pasquato. "Routes to the preparation of mixed monolayers of fluorinated and hydrogenated alkanethiolates grafted on the surface of gold nanoparticles." Faraday Discussions 191 (2016): 527–43. http://dx.doi.org/10.1039/c6fd00016a.

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The use of binary blends of hydrogenated and fluorinated alkanethiolates represents an interesting approach to the construction of anisotropic hybrid organic–inorganic nanoparticles since the fluorinated and hydrogenated components are expected to self-sort on the nanoparticle surface because of their reciprocal phobicity. These mixed monolayers are therefore strongly non-ideal binary systems. The synthetic routes we explored to achieve mixed monolayer gold nanoparticles displaying hydrogenated and fluorinated ligands clearly show that the final monolayer composition is a non-linear function o

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18

Zong, Zhengjun, Changqing Wang, Miaomiao Zhao, Weiguang Chen, and Yu Jia. "Adsorption and Dissociation of 2-Chlorophenols on the 2D ZnO Monolayer Decorated with Al Atoms: A DFT Study." Materials 18, no. 4 (2025): 813. https://doi.org/10.3390/ma18040813.

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The stable adsorption configurations, electronic structures, and dissociation properties of 2-chlorophenol on pristine and Al-decorated ZnO monolayer are investigated using density functional theory (DFT). Our results indicate that the interaction between 2-chlorophenol and pristine ZnO monolayer is weak, while Al-modified ZnO monolayer can significantly enhance the adsorption of 2-chlorophenol. Therefore, compared to the pristine ZnO monolayer, the ZnO monolayer modified with Al is more sensitive to 2-chlorophenol molecules. Moreover, both pristine ZnO and Al decorated ZnO monolayers exhibit

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19

Kramer, R. H. "Extracellular matrix interactions with the apical surface of vascular endothelial cells." Journal of Cell Science 76, no. 1 (1985): 1–16. http://dx.doi.org/10.1242/jcs.76.1.1.

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Cultured aortic endothelial cells, like their in vivo counterparts, form highly organized, confluent monolayers of polarized epithelioid cells that secrete, exclusively at their basal surface, an extracellular matrix to which they then attach. The influence of isolated subendothelial matrix preparations on cell polarity and monolayer organization was studied by presenting fragments of the matrix to confluent bovine aortic endothelial cell cultures. The matrix particles were immediately bound to the apical aspect of the cell monolayer and induced rapid reorganization of the monolayer into cells

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20

Lv, Ming-Hao, Chang-Ming Li, and Wei-Feng Sun. "Spin-Orbit Coupling and Spin-Polarized Electronic Structures of Janus Vanadium-Dichalcogenide Monolayers: First-Principles Calculations." Nanomaterials 12, no. 3 (2022): 382. http://dx.doi.org/10.3390/nano12030382.

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Phonon and spintronic structures of monolayered Janus vanadium-dichalcogenide compounds are calculated by the first-principles schemes of pseudopotential plane-wave based on spin-density functional theory, to study dynamic structural stability and electronic spin-splitting due to spin-orbit coupling (SOC) and spin polarization. Geometry optimizations and phonon-dispersion spectra demonstrate that vanadium-dichalcogenide monolayers possess a high enough cohesive energy, while VSTe and VTe2 monolayers specially possess a relatively higher in-plane elastic coefficient and represent a dynamically

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21

Wijers, C. M. J., та O. Voskoboynikov. "Optical Reﬂection from a Monolayer of Embedded Nano-Objects Covered by a Thick Capping Layer". Advanced Materials Research 31 (листопад 2007): 52–55. http://dx.doi.org/10.4028/www.scientific.net/amr.31.52.

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In a hybrid discrete-continuum description the optical response of a capped monolayer of nano-objects has been determined. The monolayer emits a summation of partial plane waves obeying traditional reflection and transmission, enabling solution of the monolayer dipole strength. For thick capping layers the resulting reflection coefficients could be approximated by analytical expressions. These results have been used to investigate the feasibility of experimental detection of the optical response of nano-object monolayers.

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22

Gómez-Verdú, J. M., B. Martínez-Haya, and A. Cuetos. "Effects of charge and size on the coadsorption of counterionic colloids in Gibbs monolayers." Condensed Matter Physics 27, no. 1 (2024): 13601. http://dx.doi.org/10.5488/cmp.27.13601.

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This study uses a coarse-grained Monte Carlo algorithm to model and simulate the coadsorption of a binary mixture of counterionic colloids in Gibbs monolayers. These monolayers form at a idealized air-water interface, with one non-soluble species confined at the interface and the second one partially soluble in the aqueous phase. The investigation focuses on the effect of colloidal size and charge on the thermodynamics and microstructure of the monolayer. We find that the composition of the monolayer evolves non-trivially with surface coverage, depending on the balance of steric and electrosta

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23

Williams, Ian, and Todd M. Squires. "Evolution and mechanics of mixed phospholipid fibrinogen monolayers." Journal of The Royal Society Interface 15, no. 141 (2018): 20170895. http://dx.doi.org/10.1098/rsif.2017.0895.

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All mammals depend on lung surfactant (LS) to reduce surface tension at the alveolar interface and facilitate respiration. The inactivation of LS in acute respiratory distress syndrome (ARDS) is generally accompanied by elevated levels of fibrinogen and other blood plasma proteins in the alveolar space. Motivated by the mechanical role fibrinogen may play in LS inactivation, we measure the interfacial rheology of mixed monolayers of fibrinogen and dipalmitoylphosphatidylcholine (DPPC), the main constituent of LS, and compare these to the single species monolayers. We find DPPC to be ineffectiv

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24

Vi, Vo T. T., Cuong Q. Nguyen, Bui D. Hoi, Huynh V. Phuc, Chuong V. Nguyen, and Nguyen N. Hieu. "Chemical functionalization of SnAs monolayer: a first-principles study of SnAsX (X = Cl, Br, and I) monolayers." Journal of Physics D: Applied Physics 55, no. 50 (2022): 505302. http://dx.doi.org/10.1088/1361-6463/ac9e07.

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Abstract Chemical functionalization is one of the effective methods to tune the electronic properties of two-dimensional (2D) nanostructures. In this paper, we study the structural, electronic properties, and carrier mobilities of 2D SnAs monolayer functionalized by chlorine, bromine, and iodine, namely SnAsX (X = Cl, Br, and I), by means of density functional theory. The obtained results show that the 2D SnAsX are energetically, dynamically, and mechanically stable. While the 2D pristine SnAs monolayer exhibits metallic characteristics, SnAsX monolayers are direct semiconductors with direct b

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25

Sammak, P. J., L. E. Hinman, P. O. Tran, M. D. Sjaastad, and T. E. Machen. "How do injured cells communicate with the surviving cell monolayer?" Journal of Cell Science 110, no. 4 (1997): 465–75. http://dx.doi.org/10.1242/jcs.110.4.465.

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Mechanically scratching cell monolayers relieves contact inhibition and induces surviving cells near the wound edge to move and proliferate. The present work was designed to test whether surviving cells passively respond to newly available space, or whether cells are actively stimulated by signals from injured cells nearby. We monitored intracellular free Ca2+ ([Ca2+]i) while scratching confluent monolayers of bovine pulmonary endothelial cells and mouse mammary epithelial cells. Within seconds after wounding, a transient elevation of [Ca2+]i was observed in surviving cells. In endothelial cel

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26

Rubio, Ramón G., Eduardo Guzmán, Francisco Ortega, and Libero Liggieri. "Monolayers of Cholesterol and Cholesteryl Stearate at the Water/Vapor Interface: A Physico-Chemical Study of Components of the Meibum Layer." Colloids and Interfaces 5, no. 2 (2021): 30. http://dx.doi.org/10.3390/colloids5020030.

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Langmuir monolayers containing different amounts of cholesterol and cholesteryl stearate were studied at two different temperatures (24 °C and 35 °C). The main goal was to contribute towards the understanding of how the variations in the chemical composition may affect the physico-chemical properties of these specific lipid monolayers. The model mixture was chosen considering that cholesteryl esters are present in cell membranes and some other biological systems, including human tear lipids. Therefore, an investigation into the effect of the lipid monolayer composition on their interfacial pro

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27

Yu, Yawei, Xiao Xie, Xiaobiao Liu, Jia Li, François M. Peeters, and Linyang Li. "Two-dimensional semimetal states in transition metal trichlorides: A first-principles study." Applied Physics Letters 121, no. 11 (2022): 112405. http://dx.doi.org/10.1063/5.0105605.

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The two-dimensional (2D) transition metal trihalide (TMX3, X = Cl, Br, I) family has attracted considerable attention in recent years due to the realization of CrCl3, CrBr3, and CrI3 monolayers. Up to now, the main focus of the theoretically predicted TMX3 monolayers has been on the Chern insulator states, which can realize the quantum anomalous Hall effect. Here, using first-principles calculations, we theoretically demonstrate that the stable OsCl3 monolayer has a ferromagnetic ground state and a spin-polarized Dirac point without spin–orbit coupling (SOC), which disappears in the band struc

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Yamamoto, Yasushi, Daiki Ito, Honoka Akatsuka, et al. "The Interaction between Anesthetic Isoflurane and Model-Biomembrane Monolayer Using Simultaneous Quartz Crystal Microbalance (QCM) and Quartz Crystal Impedance (QCI) Methods." Membranes 14, no. 3 (2024): 62. http://dx.doi.org/10.3390/membranes14030062.

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The interaction between anesthetic Isoflurane (Iso) and model-biomembrane on the water surface has been investigated using quartz crystal microbalance (QCM) and quartz crystal impedance (QCI) methods. The model-biomembranes used were dipalmitoyl phosphatidyl choline (DPPC), DPPC-palmitic acid (PA) mixture (DPPC:PA = 8:2), DPPC-Alamethicin (Al) mixture (DPPC:Al = 39:1), and DPPC-β-Lactoglobulin (βLG) mixture (DPPC:βLG = 139:1) monolayers, respectively. The quartz crystal oscillator (QCO) was attached horizontally to each monolayer, and QCM and QCI measurements were performed simultaneously. It

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Sun, Wenxue, Yan Hu, Yuling Song, Yuhong Huang, and Shuyao Cao. "F-p Hybridization-Induced Ferromagnetism for Ultrathin Two-Dimensional Ferromagnetic Half-Metal (EuN) Monolayer: A First-Principles Study." Molecules 30, no. 10 (2025): 2100. https://doi.org/10.3390/molecules30102100.

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By performing first-principles calculations, we predicted a kind of novel ultrathin two-dimensional (2D) ferromagnet, single-atomic-layer EuN. EuN monolayer is a ferromagnetic half-metal with a large band gap of 1.69 eV; Eu ions in EuN are in the highest spin state and have large magnetic moments of 6 μB, much larger compared with the non-rare-earth (RE) metal ions. The magneto-crystalline anisotropy energy (MCE) of EuN monolayer is −3.72 meV per Eu ion, which is much higher than that of CrI3 monolayer (0.685 meV per Cr ion); the magnetic dipolar energy (MDE) enhances magnetic anisotropy for E

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Razinkov, Vladimir I., Grigory B. Melikyan, Richard M. Epand, Raquel F. Epand, and Fredric S. Cohen. "Effects of Spontaneous Bilayer Curvature on Influenza Virus–mediated Fusion Pores." Journal of General Physiology 112, no. 4 (1998): 409–22. http://dx.doi.org/10.1085/jgp.112.4.409.

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Cells expressing the hemagglutinin protein of influenza virus were fused to planar bilayer membranes containing the fluorescent lipid probes octadecylrhodamine (R18) or indocarbocyanine (DiI) to investigate whether spontaneous curvature of each monolayer of a target membrane affects the growth of fusion pores. R18 and DiI lowered the transition temperatures for formation of an inverted hexagonal phase, indicating that these probes facilitate the formation of negative curvature structures. The probes are known to translocate from one monolayer of a bilayer membrane to the other in a voltage-dep

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Horiuchi, Takashi, Kazuya Matsunaga, Masatoshi Banno, et al. "HPMCs Induce Greater Intercellular Delocalization of Tight Junction-Associated Proteins Due to a Higher Susceptibility to H2O2 Compared with HUVECs." Peritoneal Dialysis International: Journal of the International Society for Peritoneal Dialysis 29, no. 2 (2009): 217–26. http://dx.doi.org/10.1177/089686080902900217.

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Background Reactive oxygen species (ROS) have been speculated as possible inducers of structural or functional changes that lead to a hyperpermeable state in patients on long-term peritoneal dialysis. This study aimed to compare localization of tight junction-associated proteins (TJPs), which relate to solute permeability characteristics, between human peritoneal mesothelial cell (HPMC) monolayers and human umbilical vein endothelial cell (HUVEC) monolayers under oxidative stress. Methods HPMCs and HUVECs were cultured on a polymer mesh until transepithelial electrical resistance reached a pla

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Martínez, Hector, Enrique Chacón, Pedro Tarazona, and Fernando Bresme. "The intrinsic interfacial structure of ionic surfactant monolayers at water–oil and water–vapour interfaces." Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences 467, no. 2131 (2011): 1939–58. http://dx.doi.org/10.1098/rspa.2010.0516.

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Using computer simulations, we investigate the interfacial structure of sodium dodecyl sulphate (SDS) monolayers adsorbed at the water surface and water–oil interfaces. Using an algorithm that removes the averaging effect of the capillary waves, we obtain a detailed view of the solvation structure of water around the monolayer. We investigate surface concentrations between 45 and 33 Å 2 per surfactant, which are near experimental conditions corresponding to the critical micellar concentration and the formation of Newton black films. The surfactants induce a layering structure in water, which d

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Barnoud, Jonathan, Laura Urbini, and Luca Monticelli. "C 60 fullerene promotes lung monolayer collapse." Journal of The Royal Society Interface 12, no. 104 (2015): 20140931. http://dx.doi.org/10.1098/rsif.2014.0931.

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Airborne nanometre-sized pollutants are responsible for various respiratory diseases. Such pollutants can reach the gas-exchange surface in the alveoli, which is lined with a monolayer of lung surfactant. The relationship between physiological effects of pollutants and molecular-level interactions is largely unknown. Here, we determine the effects of carbon nanoparticles on the properties of a model of lung monolayer using molecular simulations. We simulate phase-separated lipid monolayers in the presence of a model pollutant nanoparticle, C 60 fullerene. In the absence of nanoparticles, the m

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Wu, Jiayin, Zongbao Li, Tongle Liang та ін. "Density Functional Theory Provides Insights into β-SnSe Monolayers as a Highly Sensitive and Recoverable Ozone Sensing Material". Micromachines 15, № 8 (2024): 960. http://dx.doi.org/10.3390/mi15080960.

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This study explores the potential of β-SnSe monolayers as a promising material for ozone (O3) sensing using density functional theory (DFT) combined with the non-equilibrium Green’s function (NEGF) method. The adsorption characteristics of O3 molecules on the β-SnSe monolayer surface were thoroughly investigated, including adsorption energy, band structure, density of states (DOSs), differential charge density, and Bader charge analysis. Post-adsorption, hybridization energy levels were introduced into the system, leading to a reduced band gap and increased electrical conductivity. A robust ch

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Tim, Beata, Monika Rojewska, and Krystyna Prochaska. "Effect of Silica Microparticles on Interactions in Mono- and Multicomponent Membranes." International Journal of Molecular Sciences 23, no. 21 (2022): 12822. http://dx.doi.org/10.3390/ijms232112822.

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Advancing our understanding of the mechanism of the interaction between inhaled pollutant microparticles and cell membrane components is useful to study the impact of fine particulate matter on human health. In this paper, we focus on the effect of cholesterol (Chol) molecules on the surface properties of a model membrane in the presence of silica microparticles (MPs). Mixed monolayers containing phospholipid-dipalmitoylphosphatidylcholine (DPPC), Chol and silica particle dispersions (MPs; 0.033% w/w, 0.33% w/w and 0.83% w/w) were formed and studied using the Langmuir monolayer technique compl

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Galli-Resta, Lucia, Elena Novelli, and Alessandro Viegi. "Dynamic microtubule-dependent interactions position homotypic neurones in regular monolayered arrays during retinal development." Development 129, no. 16 (2002): 3803–14. http://dx.doi.org/10.1242/dev.129.16.3803.

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In the vertebrate retina cell layers support serial processing, while monolayered arrays of homotypic neurones tile each layer to allow parallel processing. How neurones form layers and arrays is still largely unknown. We show that monolayered retinal arrays are dynamic structures based on dendritic interactions between the array cells. The analysis of three developing retinal arrays shows that these become regular as a net of dendritic processes links neighbouring array cells. Molecular or pharmacological perturbations of microtubules within dendrites lead to a stereotyped and reversible disr

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Li, Fang-Qiang, Yang Zhang, and Sheng-Li Zhang. "Defects and Strain Engineering of Structural, Elastic, and Electronic Properties of Boron-Phosphide Monolayer: A Hybrid Density Functional Theory Study." Nanomaterials 11, no. 6 (2021): 1395. http://dx.doi.org/10.3390/nano11061395.

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Defects and in-plane strain have significant effects on the electronic properties of two-dimensional nanostructures. However, due to the influence of substrate and environmental conditions, defects and strain are inevitable during the growth or processing. In this study, hybrid density functional theory was employed to systematically investigate the electronic properties of boron-phosphide monolayers tuned by the in-plane biaxial strain and defects. Four types of defects were considered: B-vacancy (B_v), P-vacancy (P_v), double vacancy (D_v), and Stone–Wales (S-W). Charge density difference an

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Dong, Sha, Xiaoli Sun, and Zhiguo Wang. "Trapping polysulfide on two-dimensional molybdenum disulfide for Li–S batteries through phase selection with optimized binding." Beilstein Journal of Nanotechnology 10 (March 26, 2019): 774–80. http://dx.doi.org/10.3762/bjnano.10.77.

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Introducing anchoring materials into cathodes for Li–S batteries has been demonstrated as an effective way to overcome the shuttle effect and enhance the cycling stability. In this work, the anchoring effects of 2H-MoS2 and 1T'-MoS2 monolayers for Li–S batteries were investigated by using density functional theory calculations. It was found that the binding energies of Li2S x absorbed on 1T'-MoS2 monolayer are in the range of 0.31–2.94 eV, which is much higher than on the 2H-phase. The 1T'-MoS2 monolayer shows stronger trapping ability for Li2S x than the 2H-MoS2 monolayer. The 1T'-MoS2 monola

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Mishra, Suryakant, and Debkumar Bhowmick. "Asymmetric Magnetoelectrochemistry: An Efficient Method to Grow Enantiopure Self-Assemble Monolayer." Magnetochemistry 6, no. 3 (2020): 37. http://dx.doi.org/10.3390/magnetochemistry6030037.

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In this work, we are presenting magnetic field dependent electrochemical method to grow enantiopure monolayer. Thiol gold monolayer formation by redox reaction is studied on gold coated ferromagnetic surface. Infrared and photoemission spectroscopies are used to probe the quality of the monolayers, grown using different direction of magnetization of surface. Commercially available chiral molecules, L-cysteine along with dsDNA are used as control molecules for the measurements. Since it is established by aligning the electron spin within the surface, it helps to adsorb specific enantiomer of mo

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Santiago, Jecksan R., E. Barry Troughton, Richard A. Dennis, and Phillip E. Russell. "Atomic Force Microscopy Studies of Microstructure and Properties of Self Assembled Monolayers." Microscopy and Microanalysis 4, S2 (1998): 308–9. http://dx.doi.org/10.1017/s1431927600021668.

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Ex-situ and in-situ studies were performed for self-assembled monolayers (SAMs) formation on mica. The behavior of two surfactants [octadecylphosphonic acid (OPA) and dodecylphosphonic acid (DPA)] in two different solutions [ethanol or tetrahydrofuran (THF)] were studied at different concentrations. A cross section analysis of the monolayer images at partial coverage showed thickness of 1.8 nm, 0.7 nm, and 1.0 nm for OPA, DPA and mixed OPA/DPA, respectively. These values are similar to the ones presented by Xiao and those expected for a monolayer of mixed surfactants as proposed by Whitesides.

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Bae, Jeonghwan, and Youngdong Yoo. "A Novel Carbon-Assisted Chemical Vapor Deposition Growth of Large-Area Uniform Monolayer MoS2 and WS2." Nanomaterials 11, no. 9 (2021): 2423. http://dx.doi.org/10.3390/nano11092423.

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Monolayer MoS2 can be used for various applications such as flexible optoelectronics and electronics due to its exceptional optical and electronic properties. For these applications, large-area synthesis of high-quality monolayer MoS2 is highly desirable. However, the conventional chemical vapor deposition (CVD) method using MoO3 and S powder has shown limitations in synthesizing high-quality monolayer MoS2 over a large area on a substrate. In this study, we present a novel carbon cloth-assisted CVD method for large-area uniform synthesis of high-quality monolayer MoS2. While the conventional

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42

Dickie, Adam J., Ashok K. Kakkar, and Michael A. Whitehead. "Molecular modelling of self-assembled alkynyl monolayer structures Unnatural symmetry units, surface bonding, and topochemical polymerization1." Canadian Journal of Chemistry 81, no. 11 (2003): 1228–40. http://dx.doi.org/10.1139/v03-110.

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Geometric modelling techniques are used to map the potential energies of packing for self-assembled alkyl- and phenyl-backboned monolayers across a range of intermolecular separations. Natural packing distances of 4.24.4 Å produce less stable, more isotropic monolayers because of repulsive interchain contacts. Optimizations at unnatural surface densities found thin films of lower energy and higher symmetry existed at increased chainchain separations. Head-group bonding is therefore identified as a force for controlling monolayer order. Analysis of the natural monolayer structures on a silico

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Huang, Zhaoming, Kai Ren, Ruxin Zheng, Liangmo Wang, and Li Wang. "Ultrahigh Carrier Mobility in Two-Dimensional IV–VI Semiconductors for Photocatalytic Water Splitting." Molecules 28, no. 10 (2023): 4126. http://dx.doi.org/10.3390/molecules28104126.

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Two-dimensional materials have been developed as novel photovoltaic and photocatalytic devices because of their excellent properties. In this work, four δ-IV–VI monolayers, GeS, GeSe, SiS and SiSe, are investigated as semiconductors with desirable bandgaps using the first-principles method. These δ-IV–VI monolayers exhibit exceptional toughness; in particular, the yield strength of the GeSe monolayer has no obvious deterioration at 30% strain. Interestingly, the GeSe monolayer also possesses ultrahigh electron mobility along the x direction of approximately 32,507 cm2·V−1·s−1, which is much hi

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Elkins, Amy L., John G. Eley, Merrill C. Miller III, Iris H. Hall, Anup Sood, and Bernard Spielvogel. "Transepithelial Transport and Metabolism of Boronated Dipeptides Across Caco-2 and HCT-8 Cell Monolayers." Metal-Based Drugs 3, no. 6 (1996): 277–86. http://dx.doi.org/10.1155/mbd.1996.277.

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Oral delivery of proteins and peptides as therapeutic agents is problematic due to their low bioavailability. This study examined the effect of boronation on the transepithelial transport and metabolism of three glycine-phenylalanine dipeptides in Caco-2 and HCT-8 cell monolayers. The three dipeptides exhibited passive transport characteristics in the monolayer systems. However, metabolism of the boronated dipeptides did occur, but to a lesser extent than the non-boronated glycine-phenylalanine dipeptide. The same metabolic scheme was seen in both cell monolayer system, but greater metabolism

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Martín, Santiago, Luz M. Ballesteros, Alejandro González-Orive, et al. "Towards a metallic top contact electrode in molecular electronic devices exhibiting a large surface coverage by photoreduction of silver cations." Journal of Materials Chemistry C 4, no. 38 (2016): 9036–43. http://dx.doi.org/10.1039/c6tc03319a.

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Kim, Hyungjin, Valerio Adinolfi, and Sin-Hyung Lee. "Photoluminescence of Chemically and Electrically Doped Two-Dimensional Monolayer Semiconductors." Materials 17, no. 16 (2024): 3962. http://dx.doi.org/10.3390/ma17163962.

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Two-dimensional (2D) transition metal dichalcogenide (TMDC) monolayers exhibit unique physical properties, such as self-terminating surfaces, a direct bandgap, and near-unity photoluminescence (PL) quantum yield (QY), which make them attractive for electronic and optoelectronic applications. Surface charge transfer has been widely used as a technique to control the concentration of free charge in 2D semiconductors, but its estimation and the impact on the optoelectronic properties of the material remain a challenge. In this work, we investigate the optical properties of a WS2 monolayer under t

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عباس فاضل هادي, بهحت بهلول كاظم, and حمد رحمن جبر. "Two-dimensional GaP monolayer with tunable electrical and optical properties." Journal of the College of Basic Education 29, no. 121 (2023): 47–33. http://dx.doi.org/10.35950/cbej.v29i121.10916.

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The optical characteristics of two-dimensional (2D) monolayer formations in GaP. According to the predicted binding energies, the GaP monolayers are in constant contact. GaP monolayer was revealed to be semiconducting, with gaps of 2.080 eV. Furthermore, the predicted optical properties indicate that the GaP monolayer will absorb light at wavelengths ranging from infrared to ultraviolet. As a result, GaP monolayer should be appealing for visible-light communication and photocatalytic devices. It is possible to determine that this layer is kinematically stable by studying the form of the phonon

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عباس فاضل هادي, بهحت بهلول كاظم, and حمد رحمن جبر. "Two-dimensional GaP monolayer with tunable electrical and optical properties." Journal of the College of Basic Education 29, no. 121 (2023): 47–33. http://dx.doi.org/10.35950/cbej.v29i121.11020.

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The optical characteristics of two-dimensional (2D) monolayer formations in GaP. According to the predicted binding energies, the GaP monolayers are in constant contact. GaP monolayer was revealed to be semiconducting, with gaps of 2.080 eV. Furthermore, the predicted optical properties indicate that the GaP monolayer will absorb light at wavelengths ranging from infrared to ultraviolet. As a result, GaP monolayer should be appealing for visible-light communication and photocatalytic devices. It is possible to determine that this layer is kinematically stable by studying the form of the phonon

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Dalgamouni, Mariam, and Stanko Brankovic. "(Invited) Electroless Cu, Pb and Ag Monolayer Deposition – Generality of an Electroless Monolayer Deposition Phenomenon." ECS Meeting Abstracts MA2023-02, no. 20 (2023): 1244. http://dx.doi.org/10.1149/ma2023-02201244mtgabs.

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Recent progress in fuel cell catalysis has been enabled in great part by facile methods for catalyst monolayer synthesis based on surface limited redox replacement (SLRR) of underpotentially deposited (UPD) monolayers. Although this approach has been very effective, it has shown a limited applications in majority of heterogeneous gas phase catalysis problems where substrates are oxide based materials with very limited conductivity. In this talk we point out a new possibility for catalyst monolayer synthesis via SLRR on metal surfaces which are not part of a broadly conductive substrates such a

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Ueda, Yuki, Yuto Miyake, Akirabha Chanuntranont, et al. "Detecting nuclear spins in an organosilane monolayer using nitrogen-vacancy centers for analysis of precursor self-assembly on diamond surface." Japanese Journal of Applied Physics 62, SG (2023): SG1049. http://dx.doi.org/10.35848/1347-4065/accc91.

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Abstract We demonstrated the correlation spectroscopy of organosilane monolayers using an ensemble of shallow nitrogen-vacancy centers as the quantum sensor. Several types of organosilane monolayers were grown directly on the diamond surface by exposing the surface to a silane precursor vapor. The feasibility of detecting 1H and 19F in the monolayer was examined by correlation spectroscopy measurements. The effect of the magnetic dipole–dipole interaction on the peak width was also discussed by comparing the spectrum of the monolayer with that of surface-attached 1H and that of immersion oil.

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