Статті в журналах: "Langmuir-Blodgett technology"

1

Krull, Ulrich J., Michael Thompson, and Hector E. Wong. "Simple instrumentation for Langmuir-Blodgett technology." Analyst 110, no. 11 (1985): 1299. http://dx.doi.org/10.1039/an9851001299.

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2

Brown, R. Stephen, and Ulrich J. Krull. "Automation of simple instrumentation for Langmuir-Blodgett technology." Analyst 112, no. 8 (1987): 1165. http://dx.doi.org/10.1039/an9871201165.

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3

MUKHOPADHYAY, S., and A. K. RAY. "Structural studies of Langmuir-Blodgett films: technology and analysis." International Journal of Electronics 73, no. 5 (November 1992): 1055–58. http://dx.doi.org/10.1080/00207219208925767.

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4

Fiol, Catherine, Jean-Marc Valleton, Norbert Delpire, Gérard Barbey, André Barraud, and Annie Ruaudel-Teixier. "Elaboration of a glucose biosensor based on Langmuir-Blodgett technology." Thin Solid Films 210-211 (April 1992): 489–91. http://dx.doi.org/10.1016/0040-6090(92)90321-2.

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5

Shibata, Masaaki, Futao Kaneko, Masatoshi Aketagawa, and Satoshi Kobayashi. "Reversible color-phase transitions of langmuir-blodgett polydiacetylene films." Electrical Engineering in Japan 109, no. 2 (March 1989): 33–41. http://dx.doi.org/10.1002/eej.4391090205.

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6

Periasamy, Vengadesh, Muhammad Musoddiq Jaafar, Karthikeyan Chandrasekaran, Sara Talebi, Fong Lee Ng, Siew Moi Phang, Georgepeter Gnana kumar, and Mitsumasa Iwamoto. "Langmuir–Blodgett Graphene-Based Films for Algal Biophotovoltaic Fuel Cells." Nanomaterials 12, no. 5 (March 2, 2022): 840. http://dx.doi.org/10.3390/nano12050840.

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The prevalence of photosynthesis, as the major natural solar energy transduction mechanism or biophotovoltaics (BPV), has always intrigued mankind. Over the last decades, we have learned to extract this renewable energy through continuously improving solid-state semiconductive devices, such as the photovoltaic solar cell. Direct utilization of plant-based BPVs has, however, been almost impracticable so far. Nevertheless, the electrochemical platform of fuel cells (FCs) relying on redox potentials of algae suspensions or biofilms on functionalized anode materials has in recent years increasingly been demonstrated to produce clean or carbon-negative electrical power generators. Interestingly, these algal BPVs offer unparalleled advantages, including carbon sequestration, bioremediation and biomass harvesting, while producing electricity. The development of high performance and durable BPVs is dependent on upgraded anode materials with electrochemically dynamic nanostructures. However, the current challenges in the optimization of anode materials remain significant barriers towards the development of commercially viable technology. In this context, two-dimensional (2D) graphene-based carbonaceous material has widely been exploited in such FCs due to its flexible surface functionalization properties. Attempts to economically improve power outputs have, however, been futile owing to molecular scale disorders that limit efficient charge coupling for maximum power generation within the anodic films. Recently, Langmuir–Blodgett (LB) film has been substantiated as an efficacious film-forming technique to tackle the above limitations of algal BPVs; however, the aforesaid technology remains vastly untapped in BPVs. An in-depth electromechanistic view of the fabrication of LB films and their electron transference mechanisms is of huge significance for the scalability of BPVs. However, an inclusive review of LB films applicable to BPVs has yet to be undertaken, prohibiting futuristic applications. Consequently, we report an inclusive description of a contextual outline, functional principles, the LB film-formation mechanism, recent endeavors in developing LB films and acute encounters with prevailing BPV anode materials. Furthermore, the research and scale-up challenges relating to LB film-integrated BPVs are presented along with innovative perceptions of how to improve their practicability in scale-up processes.

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7

TANG, DONGYAN, QIAN FENG, ENYING JIANG, and BAOZHU HE. "FABRICATION AND OPTOELECTRONIC PROPERTIES OF MgxZn1-xO ULTRATHIN FILMS BY LANGMUIR–BLODGETT TECHNOLOGY." Surface Review and Letters 19, no. 04 (July 26, 2012): 1250044. http://dx.doi.org/10.1142/s0218625x12500448.

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By transferring Mg x Zn 1-x O sol and stearic acid onto a hydrophilic silicon wafer or glass plate, the Langmuir–Blodgett (LB) multilayers of Mg x Zn 1-x O (x:0, 0.2, 0.4) were deposited. After calcinations at 350°C for 0.5 h and at 500°C for 3 h, Mg x Zn 1-x O ultrathin films were fabricated. The optimized parameters for monolayer formation and multilayer deposition were determined by the surface pressure-surface (Π-A) area and the transfer coefficient, respectively. The expended areas of stearic acid with Mg x Zn 1-x O sols under Π-A isotherms inferred the interaction of stearic acid with Mg x Zn 1-x O sols during the formation of monolayer at air–water interface. X-ray diffraction (XRD) was used to determine the crystal structures of Mg x Zn 1-x O nanoparticles and ultrathin films. The surface morphologies of Mg x Zn 1-x O ultrathin films were observed by scanning probe microscopy (AFM). And the optoelectronic properties of Mg x Zn 1-x O were detected and discussed based on photoluminescence (PL) spectra.

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8

Milekhin, Alexander G., Nikolay A. Yeryukov, Larisa L. Sveshnikova, Tatyana A. Duda, Dmitry Yu Protasov, Anton K. Gutakovskii, Stepan A. Batsanov, et al. "CdZnS quantum dots formed by the Langmuir–Blodgett technique." Journal of Vacuum Science & Technology B, Nanotechnology and Microelectronics: Materials, Processing, Measurement, and Phenomena 31, no. 4 (July 2013): 04D109. http://dx.doi.org/10.1116/1.4810782.

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9

Bauman, Danuta, Robert Hertmanowski, Kamila Stefańska, and Roland Stolarski. "The synthesis of novel perylene-like dyes and their aggregation properties in Langmuir and Langmuir–Blodgett films." Dyes and Pigments 91, no. 3 (December 2011): 474–80. http://dx.doi.org/10.1016/j.dyepig.2011.03.032.

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10

Gorbachev, I. A., A. V. Smirnov, E. S. Shamsutdinova, V. V. Kashin, S. G. Yudin, V. I. Anisimkin, V. V. Kolesov, and I. E. Kuznetsova. "Studying the Structural and Piezoelectric Properties of PVDF Films Obtained Using Langmuir‒Blodgett Technology." Bulletin of the Russian Academy of Sciences: Physics 85, no. 6 (June 2021): 603–7. http://dx.doi.org/10.3103/s1062873821060101.

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11

Milekhin, A., L. Sveshnikova, T. Duda, N. Surovtsev, S. Adichtchev, L. Ding, and D. R. T. Zahn. "Vibrational spectra of quantum dots formed by Langmuir–Blodgett technique." Journal of Vacuum Science & Technology B, Nanotechnology and Microelectronics: Materials, Processing, Measurement, and Phenomena 28, no. 4 (July 2010): C5E22—C5E24. http://dx.doi.org/10.1116/1.3442799.

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12

Abraham, Emmanuel, Christine Grauby-Heywang, Sophia Selector, and Gediminas Jonusauskas. "Characterization of hemicyanine Langmuir–Blodgett films by picosecond time-resolved fluorescence." Journal of Photochemistry and Photobiology B: Biology 93, no. 1 (October 2008): 44–52. http://dx.doi.org/10.1016/j.jphotobiol.2008.04.003.

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13

Uchida, Saburo, Vijay T. Chitnis, Hideo Furuhashi, Toshio Yoshikawa, Akinori Maeda, Goro Sawa, Kenzo Kojima, et al. "Molecular Organization of Nonlinear Organic Films Laminated by Langmuir-Blodgett Method." Materials Science Forum 492-493 (August 2005): 115–22. http://dx.doi.org/10.4028/www.scientific.net/msf.492-493.115.

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In the 21st century, the optical computation is likely to be the basic technology for processing lots of information at high speed. The aim of the present research work is to develop optical logic gates or memory chips. For this purpose, we have examined the suitability of organic nonlinear optical dye material Vanadyl-phthalocyanine (VOPc). Large single crystals of this material have been fabricated by using Molecular Beam Epitaxy (MBE) technique. The epitaxial films were formed on the substrate under optimum operating conditions. However, the epitixial growth is observed only up to a limited thickness. Above this thickness, the films become non-epitaxial, which can be improved by annealing. The reformation of the epitaxial films has been confirmed. We have also reported the effects of the environment of high temperature on the multilayered tetra-tert-butyl-Vanadyl-phthalocyanine ((t-bu)4VOPc) films, formed by Langmuir-Blodgett (LB) method. The solvent used to dissolve ((t-bu)4VOPc) was 1,2-dichloroethane. The monolayer on the surface of the water was transferred to a glass substrate by the vertical dipping method. If the multilayered stack is too thick, the molecular arrangement of the film may get disturbed. The improvement in the molecular arrangement of the LB films was examined and confirmed by measuring it’s nonlinear optical susceptibility, using Maker Fringe Method. Monolayer formation on water surface depends on the surface pressure-area isotherm. If this monolayer formation is not perfect, multiplayer stacks cannot be formed. The molecular films were aligned almost perpendicular to the substrate, as estimated from the limiting molecular area of surface pressure-area isotherm. The molecular organization of the monolayer on the substrate and the molecular structure of the multilayered ((t-bu)4VOPc) films are discussed.

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14

Inglot, K., A. Kaleta, T. Martyński, and D. Bauman. "Molecular aggregation in Langmuir–Blodgett films of azo dye/liquid crystal mixtures." Dyes and Pigments 77, no. 2 (January 2008): 303–14. http://dx.doi.org/10.1016/j.dyepig.2007.05.016.

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15

Chandra, M. Sharath, Zhenghe Xu, and Jacob H. Masliyah. "Interfacial Films Adsorbed from Bitumen in Toluene Solution at a Toluene−Water Interface: A Langmuir and Langmuir−Blodgett Film Approach." Energy & Fuels 22, no. 3 (May 2008): 1784–91. http://dx.doi.org/10.1021/ef700786u.

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16

RAO, D. V. G. L. N., F. J. ARANDA, D. E. REMY, and J. F. ROACH. "THIRD-ORDER NONLINEAR OPTICAL INTERACTIONS IN TETRABENZPORPHYRINS." Journal of Nonlinear Optical Physics & Materials 03, no. 04 (October 1994): 511–29. http://dx.doi.org/10.1142/s0218199194000304.

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Third-order nonlinear optical susceptibility χ(3) was measured for a variety of tetrabenzporphyrin compounds in solution in tetrahydrofuran at 532 nm using the technique of degenerate four-wave mixing. High values in the range 10−9 to 10−8 esu are observed. The dominant contribution comes from the imaginary part as a result of excited state absorption. Measurements were also made on thin films, deposited by the Langmuir-Blodgett technique, for one of the compounds. Mirrorless all-optical bistability induced by reverse saturable absorption was observed. These materials are good candidates for some applications in photonics technology.

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17

Mahavadi, Sharath Chandra, Zhenghe Xu, and Jacob H. Masliyah. "Correction to Interfacial Films Adsorbed from Bitumen in Toluene Solution at a Toluene–Water Interface: A Langmuir and Langmuir–Blodgett Film Approach." Energy & Fuels 31, no. 8 (August 7, 2017): 8822. http://dx.doi.org/10.1021/acs.energyfuels.6b02514.

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18

Itoh, Eiji, and Mitsumasa Iwamoto. "Interfacial electrostatic phenomena and capacitance-voltage characteristics of ultrathin polyimide Langmuir-Blodgett films." Electrical Engineering in Japan 134, no. 3 (2000): 9–15. http://dx.doi.org/10.1002/1520-6416(200102)134:3<9::aid-eej2>3.0.co;2-d.

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19

Li, Jia-Xin, Ji-Jun Xu, Wen-Qi Luo, and Chuan-Ming Jin. "Supramolecular chirality and photochromism in Langmuir-Blodgett films of fabricated silver-induced phenylazoimidazole derivatives." Dyes and Pigments 187 (March 2021): 109080. http://dx.doi.org/10.1016/j.dyepig.2020.109080.

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20

Wang, Ziyan, Jingyao Li, Yanbin Sun, Jiangtao Peng, Jian Wang, Yizhan Hao, Wenqing Li, Peiping Zhang, Weikun Ning, and Shiding Miao. "Laponite elementary sheets assisted fluorescence resonance energy transfer: A demonstration by Langmuir-Blodgett technique." Dyes and Pigments 196 (December 2021): 109800. http://dx.doi.org/10.1016/j.dyepig.2021.109800.

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21

Yang, Xi, Man Ge, Tao Wang, and Dongqin Quan. "Application of Langmuir–Blodgett film technology on studying the formulation of self-microemulsifying drug delivery system (SMEDDS)." International Journal of Pharmaceutics 437, no. 1-2 (November 2012): 100–102. http://dx.doi.org/10.1016/j.ijpharm.2012.07.044.

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22

Tsoukalas, Dimitris, S. Kolliopoulou, P. Dimitrakis, P. Normand, and M. C. Petty. "Nanoparticles for Charge Storage Using Hybrid Organic Inorganic Devices." Advances in Science and Technology 54 (September 2008): 451–57. http://dx.doi.org/10.4028/www.scientific.net/ast.54.451.

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We present a concept for integration of low temperature fabricated memory devices in a 3-D architecture using a hybrid silicon-organic technology. The realization of electrically erasable read-only memory (EEPROM) like device is based on the fabrication of a V-groove SiGe MOSFET, the functionalization of a gate oxide followed by self-assembly of gold nanoparticles and finally, the deposition of an organic insulator by Langmuir-Blodgett (LB) technique. Such structures were processed at a temperature lower than 400°C following a process based on wafer bonding. The electrical characteristics of the final hybrid MISFET memory cells were evaluated in terms of memory window and program/erase voltage pulses. A model describing the memory characteristics, based on the electronic properties of the gate stack materials, is presented.

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23

Podolskaya, Ekaterina P., Marina V. Serebryakova, Konstantin A. Krasnov, Sergei A. Grachev, Alexander M. Gzgzyan, and Nikolai G. Sukhodolov. "Application of Langmuir–Blodgett technology for the analysis of saturated fatty acids using the MALDI-TOF mass spectrometry." Mendeleev Communications 28, no. 3 (May 2018): 337–39. http://dx.doi.org/10.1016/j.mencom.2018.05.037.

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24

Araque-Marín, Pedronel, Andrea Naranjo Díaz, Luisa Fernanda Gómez Londoño, María del Pilar Jiménez Alzate, Francesco Castelli, Maria Grazia Sarpietro, Cristiano Giordani, and Carlos Alberto Peláez Jaramillo. "A Langmuir-Blodgett Study of the Interaction between Amphotericin B and Lipids of Histoplasma capsulatum." Membranes 12, no. 5 (April 29, 2022): 483. http://dx.doi.org/10.3390/membranes12050483.

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Histoplasma capsulatum is a dimorphic, thermal, and nutritional fungus. In the environment and at an average temperature of 28 °C, it develops as a mold that is composed of infecting particles. Once in the host or in cultures at 37 °C, it undergoes a transition into the parasitic form. In the present work, we performed chemical extraction and characterization using chromatography techniques of the associated lipid composition of the external surface of the cell wall of the mycelial phase of two isolates of the H. capsulatum: one clinical and one environmental. Several differences were evidenced in the fatty acids in the phospholipid composition. Surface pressure–area isotherms and compression module curves of the Amphotericin B and lipid extract monolayers, as well as (AmB)-lipid extract mixed monolayers were recorded. Results show a high affinity of AmB towards lipid extracts. The most stable monolayers were formed by AmB + environmental with a mass ratio of 1:3 and AmB + clinical with a mass ratio of 1:2. Knowledge of the AmB aggregation processes at a molecular level and the characterization of the lipid extracts allows the possibility to understand the interaction between the AmB and the lipid fractions of H. capsulatum.

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25

Zou, Lina, Xianli Wu, Yamin Li, Baocheng Yang, Shusheng Zhang, and Baoxian Ye. "Langmuir-Blodgett Film of Asymmetric Calix[4]arene Derivative Modified Electrode for Voltammetric Determination of Silver." CLEAN - Soil, Air, Water 39, no. 3 (February 4, 2011): 238–43. http://dx.doi.org/10.1002/clen.201000396.

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26

Szabó, Tamás, Jun Wang, Alexander Volodin, Chris van Haesendonck, Imre Dekany, and Robert A. Schoonheydt. "AFM study of smectites in hybrid Langmuir-Blodgett films: saponite, Wyoming bentonite, hectorite, and Laponite." Clays and Clay Minerals 57, no. 6 (December 1, 2009): 706–14. http://dx.doi.org/10.1346/ccmn.2009.0570604.

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27

Biadasz, A., K. Łabuszewska, E. Chrzumnicka, E. Michałowski, T. Martyński, and D. Bauman. "Spectral properties of some fluorescent dyes in two-dimensional films formed by means of Langmuir–Blodgett technique." Dyes and Pigments 74, no. 3 (January 2007): 598–607. http://dx.doi.org/10.1016/j.dyepig.2006.03.025.

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28

Torrisi, Cristina, Giuseppe Antonio Malfa, Rosaria Acquaviva, Francesco Castelli, and Maria Grazia Sarpietro. "Effect of Protocatechuic Acid Ethyl Ester on Biomembrane Models: Multilamellar Vesicles and Monolayers." Membranes 12, no. 3 (February 28, 2022): 283. http://dx.doi.org/10.3390/membranes12030283.

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The interactions of drugs with cell membranes are of primary importance for several processes involved in drugs activity. However, these interactions are very difficult to study due to the complexity of biological membranes. Lipid model membranes have been developed and used to gain insight into drug–membrane interactions. In this study, the interaction of protocatechuic acid ethyl ester, showing radical-scavenging activity, antimicrobial, antitumor and anti-inflammatory effects, with model membranes constituted by multilamellar vesicles and monolayers made of DMPC and DSPC, has been studied. Differential scanning calorimetry and Langmuir–Blodgett techniques have been used. Protocatechuic acid ethyl ester interacted both with MLV and monolayers. However, a stronger interaction of the drug with DMPC-based model membranes has been obtained. The finding of this study could help to understand the protocatechuic acid ethyl ester action mechanism.

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29

Stine, Keith J. "Investigations of monolayers by fluorescence microscopy." Proceedings, annual meeting, Electron Microscopy Society of America 50, no. 2 (August 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 can be constructed. Monolayers of phospholipids at the air/water interface serve as membrane models and have been used to investigate the effects of varying temperature, surface density, and subphase conditions. Study of the interaction of a protein introduced into the subphase with the monolayer can provide insight into a specific membrane process. In this review, fluorescence microscopy studies by a number of research groups of monolayers of fatty acids and esters, phospholipids, and of interactions of proteins with phospholipid monolayers will be discussed.

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30

Fatani, W., and D. Rosen. "Irradiation of Langmuir-Blodgett Multilayer Preparations of Phospholipids and a Fatty Acid. 1: Effect of UV Radiation." International Journal of Radiation Biology 62, no. 6 (January 1992): 645–51. http://dx.doi.org/10.1080/09553009214552581.

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31

Fatani, W., and D. Rosen. "Irradiation of Langmuir-Blodgett Multilayer Preparations of Phospholipids and a Fatty Acid. 2: Effect of X-radiation." International Journal of Radiation Biology 62, no. 6 (January 1992): 653–57. http://dx.doi.org/10.1080/09553009214552591.

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32

Wang, Juan. "Influence of Potassium Ions on Act of Amphotericin B to the DPPC/Chol Mixed Monolayer at Different Surface Pressures." Membranes 12, no. 1 (January 13, 2022): 84. http://dx.doi.org/10.3390/membranes12010084.

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Amphotericin B (AmB) is an antifungal drug that rarely develops resistance. It has an affinity with the cholesterol on mammalian cell membranes, disrupting the structure and function of the membranes, which are also affected by potassium ions. However, the mechanism is unclear. In this paper, the Langmuir monolayer method was used to study the effects of potassium ions on the surface pressure–mean molecular area of isotherms, elastic modulus and the surface pressure–time curves of a 1,2-dipalmitoyl-sn-glycero-3-phosphocholine/cholesterol (DPPC/Chol) monolayer and a DPPC/Chol/AmB monolayer. The morphology and thickness of the Langmuir–Blodgett films were studied via atomic force microscopy. The results showed that AmB can increase the mean molecular area of the DPPC/Chol mixed monolayer at low pressures (15 mN/m) but reduces it at high pressures (30 mN/m). The potassium ions may interfere with the effect of AmB in different ways. The potassium ions can enhance the influence of AmB on the stability of monolayer at low surface pressures, but weaken it at high surface pressures. The potassium ions showed significant interference with the interaction between AmB and the cholesterol-enriched region. The results are helpful for us to understand how the effect of amphotericin B on the phospholipid membrane is interfered with by potassium ions when amphotericin B enters mammalian cell membrane.

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33

Rivera, Ernesto, Maria del Pilar Carreón-Castro, Lorena Rodríguez, Gerardo Cedillo, Serguei Fomine, and Omar G. Morales-Saavedra. "Amphiphilic azo-dyes (RED-PEGM). Part 2: Charge transfer complexes, preparation of Langmuir–Blodgett films and optical properties." Dyes and Pigments 74, no. 2 (January 2007): 396–403. http://dx.doi.org/10.1016/j.dyepig.2006.02.023.

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34

Mozes, Erika, José G. Delgado-Linares, Antonio L. Cárdenas, Franklin Salazar, Juan Carlos Pereira, and Johnny Bullón. "Behavior of asphaltene and asphaltene fractions films on a Langmuir–Blodgett trough and its relationship with proposed molecular structures." Petroleum Science and Technology 36, no. 18 (August 17, 2018): 1490–96. http://dx.doi.org/10.1080/10916466.2018.1479422.

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35

Lobato, M. D., F. Gámez, and J. M. Pedrosa. "Evidence of the aggregation behaviour of asphaltenes according to the Yen-Mullins model by direct visualization of their Langmuir-Blodgett films." Fuel 299 (September 2021): 120872. http://dx.doi.org/10.1016/j.fuel.2021.120872.

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36

Mabrook, Mohammed Fadhil, Daniel Kolb, Christopher Pearson, D. A. Zeze, and M. C. Petty. "Fabrication and Characterisation of MIS Organic Memory Devices." Advances in Science and Technology 54 (September 2008): 474–79. http://dx.doi.org/10.4028/www.scientific.net/ast.54.474.

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There is a current upsurge in research on devices with nanoparticles embedded in dielectrics. Such structures can operate as memories with high speed, high density, low voltage and low cost. Here, we report on hybrid gold nanoparticle-based metal-insulator-semiconductor (MIS) memory devices combining silicon technology and organic thin film deposition. The nanoparticles are deposited using a self-assembly technique at room temperature onto a 4.5 nm thermal silicon oxide layer. A 40 nm thin film of pentacene (deposited by flash thermal evaporation), polymethylmethacrylate (spin coated) and cadmium arachidate (deposited using the Langmuir- Blodgett technique) are used as insulators. Distinct capacitance-voltage (C-V) hysteresis is observed with a memory window that increases linearly with increasing voltage programming range. Clockwise and anticlockwise hysteresis in devices based on p-type and n-type silicon, respectively are observed, indicating that charges are injected from the top electrode to the nanoparticles rather than tunnelling through the thin SiO2 layer. However, thermal growth of SiO2 at a temperature below 800 °C resulted in a hysteresis in the opposite direction. The detailed electrical behaviour of the MIS devices will be discussed.

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37

Milekhin, Alexander G., Nikolay A. Yeryukov, Larisa L. Sveshnikova, Tatyana A. Duda, Ekaterina E. Rodyakina, Victor A. Gridchin, Evgeniya S. Sheremet, and Dietrich R. T. Zahn. "Combination of surface- and interference-enhanced Raman scattering by CuS nanocrystals on nanopatterned Au structures." Beilstein Journal of Nanotechnology 6 (March 17, 2015): 749–54. http://dx.doi.org/10.3762/bjnano.6.77.

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We present the results of a Raman study of optical phonons in CuS nanocrystals (NCs) with a low areal density fabricated through the Langmuir–Blodgett technology on nanopatterned Au nanocluster arrays using a combination of surface- and interference-enhanced Raman scattering (SERS and IERS, respectively). Micro-Raman spectra of one monolayer of CuS NCs deposited on a bare Si substrate reveal only features corresponding to crystalline Si. However, a new relatively strong peak occurs in the Raman spectrum of CuS NCs on Au nanocluster arrays at 474 cm−1. This feature is related to the optical phonon mode in CuS NCs and manifests the SERS effect. For CuS NCs deposited on a SiO2 layer this phonon mode is also observed due to the IERS effect. Its intensity changes periodically with increasing SiO2 layer thickness for different laser excitation lines and is enhanced by a factor of about 30. CuS NCs formed on Au nanocluster arrays fabricated on IERS substrates combine the advantages of SERS and IERS and demonstrate stronger SERS enhancement allowing for the observation of Raman signals from CuS NCs with an ultra-low areal density.

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38

Milekhin, Alexander G., Sergei A. Kuznetsov, Ilya A. Milekhin, Larisa L. Sveshnikova, Tatyana A. Duda, Ekaterina E. Rodyakina, Alexander V. Latyshev, Volodymyr M. Dzhagan, and Dietrich R. T. Zahn. "Nanoantenna structures for the detection of phonons in nanocrystals." Beilstein Journal of Nanotechnology 9 (October 5, 2018): 2646–56. http://dx.doi.org/10.3762/bjnano.9.246.

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We report a study of the infrared response by localized surface plasmon resonance (LSPR) modes in gold micro- and nanoantenna arrays with various morphologies and surface-enhanced infrared absorption (SEIRA) by optical phonons of semiconductor nanocrystals (NCs) deposited on the arrays. The arrays of nano- and microantennas fabricated with nano- and photolithography reveal infrared-active LSPR modes of energy ranging from the mid to far-infrared that allow the IR response from very low concentrations of organic and inorganic materials deposited onto the arrays to be analyzed. The Langmuir–Blodgett technology was used for homogeneous deposition of CdSe, CdS, and PbS NC monolayers on the antenna arrays. The structural parameters of the arrays were confirmed by scanning electron microscopy. 3D full-wave electromagnetic simulations of the electromagnetic field distribution around the micro- and nanoantennas were employed to realize the maximal SEIRA enhancement for structural parameters of the arrays whereby the LSPR and the NC optical phonon energies coincide. The SEIRA experiments quantitatively confirmed the computational results. The maximum SEIRA enhancement was observed for linear nanoantennas with optimized structural parameters determined from the electromagnetic simulations. The frequency position of the feature’s absorption seen in the SEIRA response evidences that the NC surface and transverse optical phonons are activated in the infrared spectra.

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39

Chen, Kaiyue, Xiaoya Yan, Junkai Li, Tifeng Jiao, Chong Cai, Guodong Zou, Ran Wang, Mingli Wang, Lexin Zhang, and Qiuming Peng. "Preparation of Self-Assembled Composite Films Constructed by Chemically-Modified MXene and Dyes with Surface-Enhanced Raman Scattering Characterization." Nanomaterials 9, no. 2 (February 18, 2019): 284. http://dx.doi.org/10.3390/nano9020284.

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The effective functionalization and self-assembly of MXene are of crucial importance for a broad range of nanomaterial applications. In this work, we investigated the aggregates of sulfanilic acid-modified MXene (abbreviated as MXene-SO3H) with three model dyes at the air–water interface and demonstrated the morphological and aggregation changes of composite films, using Langmuir-Blodgett (LB) technology, as well as excellent uniformity and reproducibility by using surface-enhanced Raman scattering (SERS) spectra. This research has found that cationic dye molecules were adsorbed onto negatively charged MXene-SO3H particles mainly through electrostatic interaction and the particles induced dyes to form highly ordered nanostructures including H- and/or J-aggregates corresponding to monomers in bulk solution. The surface pressure-area isotherms from different dye sub phases confirmed that the stable composite films have been successfully formed. And the spectral results reveal that different dyes have different types of aggregations. In addition, the SERS spectra indicated that the optimal layers of MXene-SO3H/methylene blue (MB) films was 50 layers using rhodamine 6G (R6G) as probe molecule. And the formed 50 layers of MXene-SO3H/MB films (MXene-SO3H/MB-50) as SERS substrate were proved to possess excellent uniformity and repeatability.

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40

RIVERA, E., M. CARREONCASTRO, I. BUENDIA, and G. CEDILLO. "Optical properties and aggregation of novel azo-dyes bearing an end-capped oligo(ethylene glycol) side chain in solution, solid state and Langmuir–Blodgett films." Dyes and Pigments 68, no. 2-3 (2006): 217–26. http://dx.doi.org/10.1016/j.dyepig.2005.02.001.

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41

Gingell, D., and N. F. Owens. "Adhesion ofDictyosteliumamoebae to deposited langmuir‐blodgett monolayers and derivatized solid surfaces. A study of the conditions which trigger a contact‐mediated cytoplasmic contractile response." Biofouling 5, no. 3 (April 1992): 205–26. http://dx.doi.org/10.1080/08927019209378242.

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42

Lacey, D., and S. Holder. "Langmuir-Blodgett films. Edited by Gareth Roberts, Plenum Press, New York, 1990, 425 pp., price: US $85.00. ISBN 0 306 43316 8." Journal of Chemical Technology & Biotechnology 54, no. 2 (April 24, 2007): 201. http://dx.doi.org/10.1002/jctb.280540215.

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43

ABASHEV, G. G., E. V. SHKLYAEVA, and V. S. RUSSKIKH. "ChemInform Abstract: Reaction of 5-Methyl-2-piperidino-1,3-dithiolium 4-Thiolate. Novel Substituted Tetrathiafulvalenes and Tetracyanoquinodimethane Salts with Cations Containing Long Aliphatic Radicals for Langmuir-Blodgett Technology." ChemInform 29, no. 34 (June 20, 2010): no. http://dx.doi.org/10.1002/chin.199834148.

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44

Flood, Amar H., Robert J. A. Ramirez, Wei-Qiao Deng, Richard P. Muller, William A. Goddard III, and J. Fraser Stoddart. "Meccano on the Nanoscale—A Blueprint for Making Some of the World's Tiniest Machines." Australian Journal of Chemistry 57, no. 4 (2004): 301. http://dx.doi.org/10.1071/ch03307.

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Molecular compounds—comprised of mechanically interlocked components—such as rotaxanes and catenanes can be designed to display readily controllable internal movements of one component with respect to the other. Since the weak noncovalent bonding interactions that contribute to the template-directed synthesis of such compounds live on between the components thereafter, they can be activated such that the components move in either a linear fashion (rotaxanes) or a rotary manner (catenanes). These molecules can be activated by switching the recognition elements off and on between components chemically, electrically, or optically, such that they perform motions reminiscent of the moving parts in macroscopic machines. This review will highlight how the emergence of the mechanical bond in chemistry during the last two decades has brought with it a real prospect of integrating a bottom-up approach, based on molecular design and micro- and nanofabrication, to construct molecular electronic devices that store information at very high densities using minimal power. Although most of the research reported in this review on switchable catenanes and rotaxanes has been carried out in the context of solution-phase mechanical processes, recent results demonstrate that relative mechanical movements between the components in interlocked molecules can be stimulated (a) chemically in Langmuir and Langmuir–Blodgett films, (b) electrochemically as self-assembled monolayers on gold, and (c) electronically within the settings of solid-state devices. Not only has reversible, electronically driven switching been observed in devices incorporating a bistable [2]catenane, but a crosspoint random access memory circuit has been fabricated using an amphiphilic, bistable [2]rotaxane. The experiments provide strong evidence that switchable catenanes and rotaxanes operate mechanically in a soft-matter environment and can withstand simple device-processing steps. Studies on single-walled carbon nanotubes used as one of the electrodes in molecular switch tunnel junctions have revealed that interfacial chemical interactions involving electrodes containing carbon, silicon, and oxygen are good choices when carrying out molecular electronics on the class of rotaxane- and catenane-based molecules reported in this review. This conclusion is supported by differential conductance measurements (at 4 K) made with single-molecule transistors using the break-junction method. It transpires that the electronic transport properties in such devices are more sensitive to the chemical nature of the molecule–electrode contacts than the details of the molecules' electronic structure away from the contacts. This result has profound implications for molecular electronics and highlights the importance of also considering the molecules and the electrodes as an integrated system. It all adds up to an integrated systems-oriented approach to nanotechnology that finds its inspiration in the transfer of concepts like molecular recognition from the life sciences into materials science and provides a model for how, in principle, to transfer elements of traditional chemistry to technology platforms that are being developed on the nanoscale. Before there can be any serious prospect of a technology, there has to be some good, sound science in the making. Molecular electronics is very much in its infancy and, as such, it can be expected to give rise to a great deal of intellectually stimulating science before it stands half a chance of becoming a viable companion to silicon-based technology.

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45

Hilsum, Cyril. "Sir Gareth Gwyn Roberts. 16 May 1940 — 6 February 2007." Biographical Memoirs of Fellows of the Royal Society 57 (January 2011): 379–93. http://dx.doi.org/10.1098/rsbm.2011.0016.

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Sir Gareth Roberts made a stunning impact on the UK science scene, and his influence and reports brought optimism back into the university sector at a time when morale was low. He will be most remembered for his term as Chairman of the Committee of Vice-Chancellors and Principals (CVCP) in 1995, when the UK government announced savage cuts in university funding, and the CVCP responded by a threat to impose a levy on all first-year students. This led to the 1997 Dearing inquiry into higher education, which recommended many of the points made by Roberts, including fees on a loan basis, access for disadvantaged groups, and support for the vital role of university teaching. The Labour government accepted most of the recommendations, and large increases in university funding followed. In 2001 Roberts was asked to review the problem of the growing shortage of people with science, technology, engineering and mathematics skills, and his report, SET for success , was specifically commended by the Prime Minister. Additional funds were provided to raise the stipend of research students, to bring forward measures to recruit and retain science and engineering teachers, to modernize school and university science laboratories, and to create a new national centre for science teaching. He was primarily responsible, as Chairman of the Research Careers Initiative, for implementation of the Concordat, which set out clearly for the first time the need for a career structure for research students, and the way forward to achieve this. His prominence in the national scene might easily cause his earlier scientific achievements to be overlooked, although they were most significant. He first concentrated on the physics governing the injection of electrons into insulators and wide-gap semiconductors, and the laws governing their transit. This led to an interest in organic semiconductors, and his was the first publication on an efficient low-voltage organic light-emitting diode (LED). Concerned that evaporation harmed the properties of organic thin films, he improved the design of the Langmuir–Blodgett trough and developed their technique into a reliable method for the preparation and study of organics. He used the trough for research on a variety of materials, and many groups around the world followed his leadership, gaining much knowledge on the optical and electronic properties of organic conductors and insulators.

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46

"Langmuir-Blodgett membrane preparation." Membrane Technology 1991, no. 16 (August 1991): 15. http://dx.doi.org/10.1016/0958-2118(91)90269-z.

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47

Seliverstova, E. V., N. Kh Ibrayev, and R. Kh Dzhanabekova. "Study of graphene oxide solid films prepared by Langmuir-Blodgett technology." Nanosystems: Physics, Chemistry, Mathematics, February 24, 2016, 65–70. http://dx.doi.org/10.17586/2220-8054-2016-7-1-65-70.

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48

Wright, Lois L., Arthur G. Palmer, and Nancy L. Thompson. "Concentiration Dependence of the Translational Diffusion of Monoclonal Antibodies Specifically Bound to Phospholipid Langmmuir-Blodgett Films." MRS Proceedings 110 (1987). http://dx.doi.org/10.1557/proc-110-419.

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The concentration dependence of protein diffusion in solution and in two-dimensional biological membranes is of current theoretical and experimental interest [1]. Langmuir-Blodgett films can be employed to measure protein diffusion coefficients in or on fluid phospholipid bilayers, as a function of protein concentration. Substrate-supported phospholipid monolayers and bilayers have been used extensively as models of immunological cell membranes, and are also of interest in fields other than membrane biophysics, including protein crystallography, medical technology, bioelectronics, optics, and surface science [2,3].

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49

Panfilova, E. V., T. H. H. Nguyen, and V. A. Dyubanov. "Development of a polystyrene colloidal monolayer processin the technology of microsphere lithography." Engineering Journal: Science and Innovation, no. 10 (106) (November 2020). http://dx.doi.org/10.18698/2308-6033-2020-10-2026.

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The study introduces an operation of deposition of a polystyrene microspheres monolayer from a colloidal suspension, based on the Langmuir ― Blodgett method. The operation plays a key role in the technology of microsphere lithography. The paper describes the laboratory equipment developed to produce ordered colloidal films and monolayers, shows the main modes of the process, and presents the results of studying the surfaces of samples using an atomic force microscope. Findings of research show that the films obtained are close-packed monolayers of microspheres in accordance with the hexagonal symmetry, which are suitable to be used as templates. By means of them and by the method of microsphere lithography, it is possible to obtain regular arrays of nanoparticles of a given size for products of photonics, sensorics, and nanoelectronics.

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50

Bragazzi, Nicola, Eugenia Pechkova, and Claudio Nicolini. "Langmuir-Blodgett Technology for Drugs Production and Delivery: Insights and Implications from an In Silico Study." NanoWorld Journal 03, s3 (2017). http://dx.doi.org/10.17756/nwj.2018-s1-004.

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