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Journal articles on the topic 'Monolayers'

Author: Grafiati

Published: 4 June 2021

Last updated: 25 July 2025

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1

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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2

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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3

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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4

Mazzei, Aurora, Patrizia Pagliara, Gianmarco Del Vecchio, et al. "Cytoskeletal Responses and Aif-1 Expression in Caco-2 Monolayers Exposed to Phorbol-12-Myristate-13-Acetate and Carnosine." Biology 12, no. 1 (2022): 36. http://dx.doi.org/10.3390/biology12010036.

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The dis(re)organization of the cytoskeletal actin in enterocytes mediates epithelial barrier dys(re)function, playing a key role in modulating epithelial monolayer’s integrity and remodeling under transition from physiological to pathological states. Here, by fluorescence-based morphological and morphometric analyses, we detected differential responses of cytoskeletal actin in intestinal epithelial Caco-2 cell monolayers at two different stages of their spontaneous differentiation, i.e., undifferentiated cells at 7 days post-seeding (dps) and differentiated enterocyte-like cells at 21 dps, upo

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5

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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6

HASHIMOTO, YUICHI, KUNIHARU IJIRO, TETSURO SAWADAISHI, and MASATSUGU SHIMOMURA. "ELECTRIC CONDUCTIVITY OF NUCLEIC ACID POLYMER MONOLAYER." International Journal of Nanoscience 01, no. 05n06 (2002): 707–11. http://dx.doi.org/10.1142/s0219581x02000930.

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We investigated electric conductivities of poly nucleic acid-amphiphile polyion complex monolayers. The polyion complex monolayers were prepared by spreading of dialkylammonium salt on aqueous solutions of various poly nucleic acids. The complex monolayers were compressed at the air–water interface and transferred on comb-shaped Au-electrode substrates by vertical lifting method. I–T plots of the complex monolayers, which were measured under applying direct voltage, suggested that the complex monolayers were dielectric substances. The I–V plots indicated that the conductivity of the monolayer

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7

Zhang, Huiqin, Nini Guo, Ziyu Wang, et al. "Two-Dimensional Transition Metal Boride TMB12 (TM = V, Cr, Mn, and Fe) Monolayers: Robust Antiferromagnetic Semiconductors with Large Magnetic Anisotropy." Molecules 28, no. 24 (2023): 7945. http://dx.doi.org/10.3390/molecules28247945.

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Currently, two-dimensional (2D) materials with intrinsic antiferromagnetism have stimulated research interest due to their insensitivity to external magnetic fields and absence of stray fields. Here, we predict a family of stable transition metal (TM) borides, TMB12 (TM = V, Cr, Mn, Fe) monolayers, by combining TM atoms and B12 icosahedra based on first-principles calculations. Our results show that the four TMB12 monolayers have stable antiferromagnetic (AFM) ground states with large magnetic anisotropic energy. Among them, three TMB12 (TM=V, Cr, Mn) monolayers display an in-plane easy magnet

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8

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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9

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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10

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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11

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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12

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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13

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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14

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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15

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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16

Dabkowska, A. P., D. J. Barlow, A. V. Hughes, R. A. Campbell, P. J. Quinn, and M. J. Lawrence. "The effect of neutral helper lipids on the structure of cationic lipid monolayers." Journal of The Royal Society Interface 9, no. 68 (2011): 548–61. http://dx.doi.org/10.1098/rsif.2011.0356.

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Successful drug delivery via lipid-based systems has often been aided by the incorporation of ‘helper lipids’. While these neutral lipids enhance the effectiveness of cationic lipid-based delivery formulations, many questions remain about the nature of their beneficial effects. The structure of monolayers of the cationic lipid dimethyldioctadecylammonium bromide (DODAB) alone, and mixed with a neutral helper lipid, either diolelyphosphatidylethanolamine or cholesterol at a 1 : 1 molar ratio was investigated at the air–water interface using a combination of surface pressure–area isotherms, Brew

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17

Vu, Tuan V., Tran P. T. Linh, Huynh V. Phuc, C. A. Duque, A. I. Kartamyshev, and Nguyen N. Hieu. "Structural, electronic, and transport properties of Janus GaInX ₂ (X = S, Se, Te) monolayers: first-principles study." Journal of Physics: Condensed Matter 34, no. 4 (2021): 045501. http://dx.doi.org/10.1088/1361-648x/ac316e.

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Abstract Two-dimensional Janus monolayers have outstanding electronic and transport properties due to their asymmetric atomic structures. In the present work, we systematically study the structural, electronic, and transport properties of the Janus GaInX 2 (X = S, Se, Te) monolayers by using the first-principles calculations. The stability of the investigated monolayers is confirmed via the analysis of vibrational spectrum and molecular dynamics simulations. Our calculations demonstrate that while GaInS2 and GaInSe2 monolayers are direct semiconductors, GaInTe2 monolayer exhibits the character

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18

NISHIDA, JIN, JIN MATSUMOTO, MITSUHIKO MORISUE, KUNIHARU IJIRO, and MASATSUGU SHIMOMURA. "CIRCULAR ARRANGEMENT OF AZOBENZENE CHROMOPHORES IN THE NUCLEOAMPHIPHILE MONOLAYER BY BASE-PAIRING WITH CYCLIC DNA." International Journal of Nanoscience 01, no. 05n06 (2002): 677–81. http://dx.doi.org/10.1142/s0219581x02000887.

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In order to construct chromophores arrays that precisely controlled their arrangement, monolayers of an azobenzene bearing nucleoamphiphile were prepared on various oligoDNA solutions. Monolayers of the amphiphilic adenine derivative bearing an azobenzene moiety ( C 12 AzoC 5 Ade ) were prepared on thymidylic acid tetramer (dT4) and octamer (dT8) solutions, and UV-vis reflection absorption spectra of the monolayers were measured to investigate aggregation structures of the azobenzene. The absorption maximum of the monolayer was blue-shifted on the dT4 solution and red-shifted on the dT8 soluti

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19

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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20

Guo, Jia-Xing, Shao-Yi Wu, Si-Ying Zhong, Gao-Jun Zhang, Xing-Yuan Yu, and Li-Na Wu. "Exploring promising gas sensing and highly active catalysts for CO oxidation: transition-metal (Fe, Co and Ni) adsorbed Janus MoSSe monolayers." Physical Chemistry Chemical Physics 23, no. 18 (2021): 11004–14. http://dx.doi.org/10.1039/d1cp00994j.

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From first-principles calculations, the transition-metal (TM) atom (Fe, Co and Ni) adsorbed Janus MoSSe monolayer, toxic gas molecules (CO, NH<sub>3</sub> and H<sub>2</sub>S) adsorbed on Ni-MoSSe monolayers and CO catalytic oxidation on Fe-MoSSe monolayers are systematically investigated.

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21

Hasan, Sayedul, Mohammad Tanvir Ahmed, Abdullah Al Roman, Shariful Islam, and Farid Ahmed. "Investigation of Structural, Electronic, and Optical Properties of Chalcogen-Doped ZrS2: A DFT Analysis." Advances in Materials Science and Engineering 2023 (February 23, 2023): 1–10. http://dx.doi.org/10.1155/2023/6525507.

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The electrical and optical characteristics of a ZrS2 monolayer doped with chalcogen atoms (O, Se, or Te), where dopants are introduced by substituting the S atom, are examined on the basis of the density functional theory. The semiconductors pristine ZrS2 and O, Se, and Te-doped ZrS2 monolayers possessed indirect band gaps of 1.187 eV, 1.227 eV, 1.146 eV, and 0.922 eV, respectively. According to the formation energy, the O-doped ZrS2 monolayer is more stable compared to Se-doped and Te-doped ZrS2 monolayers. The optical properties are very similar for both the undoped and doped ZrS2 monolayers

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22

Lipp, Michael M. "Monolayer Morphology and Collapse Induced by Lung Surfactant Protein: Observation Via Fluorescence and Atomic Force Microscopy." Proceedings, annual meeting, Electron Microscopy Society of America 54 (August 11, 1996): 322–23. http://dx.doi.org/10.1017/s0424820100164076.

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Understanding the role of lung surfactant specific proteins in lipid monolayers is essential for improved treatments for Respiratory Distress Syndrome, which is a leading cause of death in premature infants. Fluorescence (FM) and Atomic Force (AFM) microscopies reveal that the amino-terminal peptide of lung surfactant protein SP-B alters the behavior of palmitic acid (PA) monolayers, enhancing their in vivo performance. The combination of these techniques provides an excellent correlation between the protein-lipid interactions on the molecular level with the macroscopic properties of the monol

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23

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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24

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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25

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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26

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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27

Sudjarwo, Wisnu Arfian A., and José L. Toca-Herrera. "Unraveling Complex Hysteresis Phenomenon in 1,2-Dipalmitoyl-sn-Glycero-3-Phosphocholine Monolayer: Insight into Factors Influencing Surface Dynamics." International Journal of Molecular Sciences 24, no. 22 (2023): 16252. http://dx.doi.org/10.3390/ijms242216252.

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This study explores the hysteresis phenomenon in DPPC (1,2-dipalmitoyl-sn-glycero-3-phosphocholine) monolayers, considering several variables, including temperature, compression and expansion rates, residence time, and subphase content. The investigation focuses on analyzing the influence of these variables on key indicators such as the π-A isotherm curve, loop area, and compression modulus. By employing the Langmuir–Blodgett technique, the findings reveal that all the examined factors significantly affect the aforementioned parameters. Notably, the hysteresis loop, representing dissipated ene

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28

Vu, Tuan V., and Nguyen N. Hieu. "Novel Janus group III chalcogenide monolayers Al₂XY₂ (X/Y = S, Se, Te): first-principles insight onto the structural, electronic, and transport properties." Journal of Physics: Condensed Matter 34, no. 11 (2021): 115601. http://dx.doi.org/10.1088/1361-648x/ac4401.

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Abstract Motivated by the recent successful synthesis of 2D quintuple-layer atomic materials, for the first time, we design and investigate the electronic and transport properties of Janus Al2XY2 (X/Y = S, Se, Te; X ≠ Y) monolayers by using the density functional theory. Our calculations demonstrate that most of the models of Al2XY2 (except for Al2STe2 monolayer) are dynamically and mechanically stable. By using the hybrid functional, all models of Al2XY2 are semiconductors with an indirect bandgap. Meanwhile, Al2TeS2 monolayer is found to be metal at the Perdew–Burke–Ernzerhof level. Due to t

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29

Su, Peng, Han Ye, Naizhang Sun, Shining Liu, and Hu Zhang. "Second Harmonic Generation in Janus Transition Metal Chalcogenide Oxide Monolayers: A First-Principles Investigation." Nanomaterials 13, no. 14 (2023): 2150. http://dx.doi.org/10.3390/nano13142150.

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Due to the unique optical responses induced by vertical atomic asymmetry inside a monolayer, two-dimensional Janus structures have been conceived as promising building blocks for nanoscale optical devices. In this paper, second harmonic generation (SHG) in Janus transition metal chalcogenide oxide monolayers is systematically investigated by the first-principles calculations. Second-order nonlinear susceptibilities are theoretically determined for Janus MXO (M = Mo/W, X = S/Se/Te) monolayers. The calculated values are comparable in magnitude with Janus MoSSe monolayer. X-M-O symmetry breaking

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30

Rao, A. K., and G. R. Cott. "Ontogeny of ion transport across fetal pulmonary epithelial cells in monolayer culture." American Journal of Physiology-Lung Cellular and Molecular Physiology 261, no. 2 (1991): L178—L187. http://dx.doi.org/10.1152/ajplung.1991.261.2.l178.

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The transition of the fetal lung from a fluid-secreting to a fluid-absorbing organ is dependent on ion transport across the pulmonary epithelium. This study examined the ion transport characteristics of distal pulmonary epithelial cells isolated from rat fetuses in late gestation and maintained in differentiation-arrested monolayer cultures. The response to inhibitors of active ion transport suggested the presence of apical to basolateral Na+ transport in monolayers derived from each gestational age. However, amiloride inhibition of short-circuit current (Isc) varied with gestational age, decr

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31

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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33

Pak, Sangyeon, Jungmoon Lim, John Hong, and SeungNam Cha. "Enhanced Hydrogen Evolution Reaction in Surface Functionalized MoS2 Monolayers." Catalysts 11, no. 1 (2021): 70. http://dx.doi.org/10.3390/catal11010070.

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Monolayered, semiconducting MoS2 and their transition metal dichalcogenides (TMDCs) families are promising and low-cost materials for hydrogen generation through electrolytes (HER, hydrogen evolution reaction) due to their high activities and electrochemical stability during the reaction. However, there is still a lack of understanding in identifying the underlying mechanism responsible for improving the electrocatalytic properties of theses monolayers. In this work, we investigated the significance of controlling carrier densities in a MoS2 monolayer and in turn the corresponding electrocatal

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34

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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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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Kudernac, Tibor, Natalia Shabelina, Wael Mamdouh, Sigurd Höger, and Steven De Feyter. "STM visualisation of counterions and the effect of charges on self-assembled monolayers of macrocycles." Beilstein Journal of Nanotechnology 2 (October 11, 2011): 674–80. http://dx.doi.org/10.3762/bjnano.2.72.

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Despite their importance in self-assembly processes, the influence of charged counterions on the geometry of self-assembled organic monolayers and their direct localisation within the monolayers has been given little attention. Recently, various examples of self-assembled monolayers composed of charged molecules on surfaces have been reported, but no effort has been made to prove the presence of counterions within the monolayer. Here we show that visualisation and exact localisation of counterions within self-assembled monolayers can be achieved with scanning tunnelling microscopy (STM). The p

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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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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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Stine, Keith J. "Investigations of monolayers by fluorescence microscopy." Proceedings, annual meeting, Electron Microscopy Society of America 50, no. 2 (1992): 1018–19. http://dx.doi.org/10.1017/s0424820100129723.

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Understanding the organization of amphiphilic molecules at interfaces is of fundamental importance in a number of fields of research. Langmuir-Blodgett technology and membrane mimetic chemistry are based on understanding the structural and physical properties of monolayers of amphiphilic compounds. This is a challenging area with numerous unresolved questions. For example, monolayers of amphiphilic compounds as simple as long-chain fatty acids and esters exhibit complex phase behavior which is still under investigation. In order to investigate biomembrane structure and processes, model systems

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Arroyo, Netz. "Stability of N-Heterocyclic Carbene Monolayers Under Continuous Voltammetric Cycling." ECS Meeting Abstracts MA2023-01, no. 48 (2023): 2529. http://dx.doi.org/10.1149/ma2023-01482529mtgabs.

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N-heterocyclic carbenes (NHCs) are promising monolayer-forming chemistries that can overcome limitations of thiol-based monolayers in terms of stability, surface functionality and reactivity across a variety of transition metal surfaces. Recent publications have reported the ability of NHCs to support biomolecular receptors on gold substrates for sensing applications, and improved tolerance to prolonged biofluid exposure relative to thiol chemistries. However, important questions remain regarding the stability of these monolayers when subjected to voltage perturbations, which is needed for tec

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PENG, QING, JARED CREAN, ALBERT K. DEARDEN, et al. "DEFECT ENGINEERING OF 2D MONATOMIC-LAYER MATERIALS." Modern Physics Letters B 27, no. 23 (2013): 1330017. http://dx.doi.org/10.1142/s0217984913300172.

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Atomic-thick monolayer two-dimensional materials present advantageous properties compared to their bulk counterparts. The properties and behavior of these monolayers can be modified by introducing defects, namely defect engineering. In this paper, we review a group of common two-dimensional crystals, including graphene, graphyne, graphdiyne, graphn-yne, silicene, germanene, hexagonal boron nitride monolayers and MoS2monolayers, focusing on the effect of the defect engineering on these two-dimensional monolayer materials. Defect engineering leads to the discovery of potentially exotic propertie

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Jadhav, Sushilkumar. "Self-assembled monolayers (SAMs) of carboxylic acids: an overview." Open Chemistry 9, no. 3 (2011): 369–78. http://dx.doi.org/10.2478/s11532-011-0024-8.

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AbstractThe field of self-assembled monolayers (SAMs) of organic compounds on different substrates is of importance because it provides a suitable and efficient method of surface modification. The formation of robust, stable monolayers from carboxylic acids on two and three dimensional surfaces of different substrates have been reported. Carboxylic acids are promising class of organic compounds for monolayer formations where traditional alkanethiols or alkoxysilanes show limitations.

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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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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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Carterson, A. J., K. Höner zu Bentrup, C. M. Ott, et al. "A549 Lung Epithelial Cells Grown as Three-Dimensional Aggregates: Alternative Tissue Culture Model for Pseudomonas aeruginosa Pathogenesis." Infection and Immunity 73, no. 2 (2005): 1129–40. http://dx.doi.org/10.1128/iai.73.2.1129-1140.2005.

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ABSTRACT A three-dimensional (3-D) lung aggregate model was developed from A549 human lung epithelial cells by using a rotating-wall vessel bioreactor to study the interactions between Pseudomonas aeruginosa and lung epithelial cells. The suitability of the 3-D aggregates as an infection model was examined by immunohistochemistry, adherence and invasion assays, scanning electron microscopy, and cytokine and mucoglycoprotein production. Immunohistochemical characterization of the 3-D A549 aggregates showed increased expression of epithelial cell-specific markers and decreased expression of canc

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Cheek, J. M., R. J. McDonald, L. Rapalyea, B. K. Tarkington, and D. M. Hyde. "Neutrophils enhance removal of ozone-injured alveolar epithelial cells in vitro." American Journal of Physiology-Lung Cellular and Molecular Physiology 269, no. 4 (1995): L527—L535. http://dx.doi.org/10.1152/ajplung.1995.269.4.l527.

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After acute exposure to oxidant gases in vivo, migration and accumulation of inflammatory cells in pulmonary epithelium coincides with epithelial cell necrosis. The present study was designed to test quantitatively the hypothesis that quiescent neutrophils enhance the removal of oxidant-injured pulmonary epithelial cells after exposure to ozone in vitro. Primary isolated rat alveolar type II cells were cultured as monolayers, using serum-free medium. After exposure to 0.1-0.5 ppm ozone for 0.5 h, apical sides of monolayers were administered either fresh nutrient medium only or medium containin

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Jo, Sunghwan, Jin-Woo Jung, Jaeyoung Baik, et al. "Surface-diffusion-limited growth of atomically thin WS2 crystals from core–shell nuclei." Nanoscale 11, no. 18 (2019): 8706–14. http://dx.doi.org/10.1039/c9nr01594a.

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Tizazu, Getachew. "A Simple Method for Patterning Nanoparticles on Planar Surfaces." Journal of Nanotechnology 2019 (June 4, 2019): 1–7. http://dx.doi.org/10.1155/2019/8263878.

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This paper describes a simple method to pattern nanoparticles on planar surfaces using the antifouling property of poly(ethylene glycol) monolayers deposited from a solution on the native oxide of titanium. Atomic force microcopy was used to pattern the poly(ethylene glycol) monolayers producing protein active sites on the protein-resistant surface. Patterns with different sizes have been generated by shaving the monolayers with different repetitions. Friction force microscopy was used to image the patterns. The smallest patterns are 50 nm and the largest patterns are 500 nm at full width half

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Tucker, Torry A., Karoly Varga, Zsuzsa Bebok, et al. "Transient transfection of polarized epithelial monolayers with CFTR and reporter genes using efficacious lipids." American Journal of Physiology-Cell Physiology 284, no. 3 (2003): C791—C804. http://dx.doi.org/10.1152/ajpcell.00435.2002.

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Transient transfection of epithelial cells with lipid reagents has been limited because of toxicity and lack of efficacy. In this study, we show that more recently developed lipids transfect nonpolarized human airway epithelial cells with high efficacy and efficiency and little or no toxicity. Because of this success, we hypothesized that these lipids may also allow transient transfection of polarized epithelial monolayers. A panel of reagents was tested for transfer of the reporter gene luciferase ( LUC) into polarized monolayers of non-cystic fibrosis (non-CF) and CF human bronchial epitheli

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