Bibliografias temáticas / Electrostatic assemblies

Literatura científica selecionada sobre o tema "Electrostatic assemblies"

Autor: Grafiati
Publicado: 7 de julho de 2024

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Artigos de revistas sobre o assunto "Electrostatic assemblies"

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Wu, David, David Chandler e Berend Smit. "Electrostatic analogy for surfactant assemblies". Journal of Physical Chemistry 96, n.º 10 (maio de 1992): 4077–83. http://dx.doi.org/10.1021/j100189a030.

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White, Rod, e Stephen Bolser. "Acoustic Transparency of Electrostatic Loudspeaker Assemblies". Journal of the Audio Engineering Society 65, n.º 6 (27 de junho de 2017): 497–506. http://dx.doi.org/10.17743/jaes.2017.0015.

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Martin, Lisal, Sindelka Karel, Sueha Lucie, Limpouchova Zuzana e Prochazka Karel. "Dissipative Particle Dynamics Simulations of Polyelectrolyte Self-Assemblies. Methods with Explicit Electrostatics1, "Высокомолекулярные соединения. Серия С"". Высокомолекулярные соединения С, n.º 1 (2017): 82–107. http://dx.doi.org/10.7868/s2308114717010101.

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Abstract - This feature article is addressed to a broad community of polymer scientists, both theoreticians and experimentalists. We present several examples of our dissipative particle dynamics (DPD) simulations of self- and co-assembling polyelectrolyte systems to illustrate the power of DPD. In the first part, we briefly outline basic principles of DPD. Special emphasis is placed on the incorporation of explicit electrostatic forces into DPD, on their calibration with respect to the soft repulsion forces and on the use of DPD for studying the self-assembly of electrically charged polymer systems. At present, the method with explicit electrostatics is being used in a number of studies of the behavior of single polyelectrolyte chains, their interaction with other components of the system, etc. However, in DPD studies of self-assembly, which require high numbers of chains, only a few research groups use explicit electrostatics. Most studies of polyelectrolyte self-assembly are based on the “implicit solvent ionic strength” approach, which completely ignores the long-range character of electrostatic interactions, because their evaluation complicates and considerably slows down the DPD simulation runs. We aim at the analysis of the impact of explicit electrostatics on simulation results.
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Chen, Charlotte H., Liam C. Palmer e Samuel I. Stupp. "Self-sorting in supramolecular assemblies". Soft Matter 17, n.º 14 (2021): 3902–12. http://dx.doi.org/10.1039/d1sm00113b.

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Two minority fluorescent constituents of a multicomponent supramolecular system undergo self-sorting, mediated by their electrostatic interactions with a third non-fluorescent constituent that comprises 99 mol% of the system.
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Domínguez, Elena, Guillaume Suárez e Arántzazu Narváez. "Electrostatic Assemblies for Bioelectrocatalytic and Bioelectronic Applications". Electroanalysis 18, n.º 19-20 (outubro de 2006): 1871–78. http://dx.doi.org/10.1002/elan.200603625.

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Zika, Alexander, Sarah Bernhardt e Franziska Gröhn. "Photoresponsive Photoacid-Macroion Nano-Assemblies". Polymers 12, n.º 8 (5 de agosto de 2020): 1746. http://dx.doi.org/10.3390/polym12081746.

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In this study, light-responsive nano-assemblies with light-switchable size based on photoacids are presented. Anionic disulfonated napthol derivates and cationic dendrimer macroions are used as building blocks for electrostatic self-assembly. Nanoparticles are already formed under the exclusion of light as a result of electrostatic interactions. Upon photoexcitation, an excited-state dissociation of the photoacidic hydroxyl group takes place, which leads to a more highly charged linker molecule and, subsequently, to a change in size and structure of the nano-assemblies. The effects of the charge ratio and the concentration on the stability have been examined with absorption spectroscopy and ζ-potential measurements. The influence of the chemical structure of three isomeric photoacids on the size and shape of the nanoscale aggregates has been studied by dynamic light scattering and atomic force microscopy, revealing a direct correlation of the strength of the photoacid with the changes of the assemblies upon irradiation.
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Sarkar, Tamal, Brandon A. Kemp e Cheyenne J. Sheppard. "Electrostatic tunability of charged, binary nanoparticle assemblies in dielectric colloidal systems". Journal of Applied Physics 131, n.º 17 (7 de maio de 2022): 175103. http://dx.doi.org/10.1063/5.0085517.

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Charged nanoparticles exhibit anomalous electrostatic interactions, which can lead to stable, non-touching equilibria in inverted dielectric systems. In this study, we analytically demonstrate minimum-potential energy configurations for binary systems of charged nanoparticles and control of constituent spacing by externally applied electrostatic fields. The field–matter interactions are governed by the electrostatic forces of high order multipoles induced by the charged nanoparticles submerged in dielectric liquids. The particles bind in non-touching configurations due to electrostatic potential wells for each particle induced by other dissimilar particles in their vicinity. Such binary systems are proposed as building blocks with the potential of electromagnetic tunability of novel photonic surfaces.
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Mohanta, Kallol, Swarup K. Majee, Sudip K. Batabyal e Amlan J. Pal. "Electrical Bistability in Electrostatic Assemblies of CdSe Nanoparticles". Journal of Physical Chemistry B 110, n.º 37 (setembro de 2006): 18231–35. http://dx.doi.org/10.1021/jp0639795.

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Gao, Changrui, Honghao Li, Yue Li, Sumit Kewalramani, Liam C. Palmer, Vinayak P. Dravid, Samuel I. Stupp, Monica Olvera de la Cruz e Michael J. Bedzyk. "Electrostatic Control of Polymorphism in Charged Amphiphile Assemblies". Journal of Physical Chemistry B 121, n.º 7 (10 de fevereiro de 2017): 1623–28. http://dx.doi.org/10.1021/acs.jpcb.6b11602.

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Osovsky, Ruth, Alexey Shavel, Nikolai Gaponik, Lilac Amirav, Alexander Eychmüller, Horst Weller e Efrat Lifshitz. "Electrostatic and Covalent Interactions in CdTe Nanocrystalline Assemblies". Journal of Physical Chemistry B 109, n.º 43 (novembro de 2005): 20244–50. http://dx.doi.org/10.1021/jp0526795.

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Teses / dissertações sobre o assunto "Electrostatic assemblies"

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Shipway, Jennifer Mary. "Coiled coils : electrostatics & macromolecular assemblies". Thesis, University of Sussex, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.250122.

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The coiled coil is a common and well-studied protein-folding motif. It is based on the seven-residue repeat abcdefg, where a and d residues are largely hydrophobic. Structurally, coiled coils comprise two or more a-helices that are brought together with the a and d residues packing in a well-defined manner to form a hydrophobic core. Interhelical electrostatic interactions are frequently observed between core-flanking g and e residues. There is debate as to whether these interactions are present solely to confer specificity, or whether they also have a role in stabilising the structures. A program, TRAWLER, was written to analyse the core-flanking interactions in a set of high-resolution structural data, and designed proteins were used to investigate the role of these interactions further. It is shown that the electrostatic interactions are stabilising in comparison to a state where the charged residues are present but not interacting. The strength of this stabilisation is strongly context dependent: pairs containing glutamic acid and lysine are more stabilising when the glutamic acid is placed at g and the lysine at e. It is proposed that this is due to the packing of these residues against the surface presented by the core a and d residues. It is noted that previous studies using different a residues in the core exhibit the opposite preference. Further designs include a histidine-based switch and a series of bi-faceted coiled coils. In the latter, coiled-coil repeats were overlaid within a sequence to produce two oligomerisation interfaces. Such sequences are seen in natural a-sheet and a-cylinder structures. Designed peptides were intended to form vertically staggered a-cylinders, leading to the formation of elongated nanotubes. The behaviours of these peptides are presented and the difficulties inherent in such designs are discussed.
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Loth, Capucine. "Exploring hydrogels based on the self-assembly of a Fmoc-based tripeptide : physicochemical characterization and antibacterial properties". Electronic Thesis or Diss., Strasbourg, 2024. http://www.theses.fr/2024STRAE002.

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Les hydrogels sont des réseaux 3D retenant de grandes quantités d'eau. Biocompatibles, ils sont utilisés pour la délivrance de médicaments. Dans le but de développer des hydrogels antibactériens, cette thèse présente deux études basées sur l'utilisation d'un tripeptide phosphorylé protégé par un fluorénylméthoxycarbonyle (Fmoc), qui peut s'auto-assembler en hydrogel. Dans la première étude, différentes conditions de préparation (pH, sel, présence de polysaccharide) ont été étudiées pour former un hydrogel autocicatrisant et antibactérien libérant un antibiotique, le florfénicol. Dans la seconde étude, des stratégies de synthèse peptidiques et de phosphoramidites en phase solide ont été combinées pour ajouter le florfénicol au phosphate de tyrosine protégé par le Fmoc via un phosphodiester, clivable par des nucléases produites par des bactéries. Des résultats encourageants ont montré la formation du composé ciblé, ouvrant la voie au design d'un peptide antibactérien auto-défensif
Hydrogels are 3D networks of fibers that retain large amounts of water when swollen. Due to their biocompatibility, they are increasingly used for drug delivery. To develop antibacterial peptide-based hydrogels, this dissertation presents two studies based on the use of a fluorenylmethoxycarbonyl (Fmoc)-protected phosphorylated tripeptide that can self-assemble into a hydrogel. In the first study, different preparation conditions (pH, salt, presence of polysaccharide) were investigated to obtain a self-healing and antibacterial hydrogel capable of releasing an antibiotic, florfenicol. In the second study, a solid-phase peptide and phosphoramidite synthesis strategies were combined to add florfenicol to the Fmoc-protected tyrosine phosphate via a phosphodiester, which can be cleaved by nucleases produced by bacteria. Encouraging results showed the formation of the targeted compound, paving the way for the design of a self-defensive antibacterial peptide
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Godbout, Lynda. "Atomic force microscopy studies on the electrostatic environment and energy levels of self-assembled quantum dots". Thesis, McGill University, 2010. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=96933.

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The ability of quantum dots to confine single charges at discrete energy levels makes them a promising platform for novel electronic and optoelectronic devices. Self-assembled quantum dots are of considerable interest because their size, shape, and material can be controlled during growth. These properties influence the confinement potential, thereby controlling the energy levels of the dot. However, the method of growth does not allow for positioning of the quantum dots which end up randomly distributed over the sample surface, making it difficult for lithographic techniques to access the quantum dots to perform either charge transport or charge sensing measurements so that single dot properties can be measured. An atomic force microscope (AFM) can be used to spatially access individual dots, and by applying a voltage between cantilever tip and back-electrode, the energy levels of individual dots can be measured as electrons are added to the dot one-by-one in the Coulomb blockade regime. The oscillating cantilever in these experiments is responsible for both loading the dots through electrical gating and also detecting tunneling events through a change in cantilever resonance frequency and/or cantilever dissipation. We use an AFM to measure the energy levels in few electron self-assembled InAs quantum dots. The charging energy, level spacing, and shell structure of single dots are extracted experimentally. We compare our results to a theoretical model that describes in detail the mechanism behind the dissipative electrostatic interaction due to the tunneling single-electrons.Examples of the electrostatic influence of the environment on the dots are also presented, and a method for using an AFM for characterizing electrostatic noise is demonstrated. Charge fluctuations are known to compromise the operation of electronic devices, especially for electrical components which are built in the micron and nano regime. Super bandgap irradiation leads to generation-recombination noise over the sample surface but not over the self-assembled quantum dots. We measure the generation-recombination noise with an AFM and compare the noise on and off the dot to show sub-20~nm spatial resolution, demonstrating the ability of AFM for characterizing noise arising from charge fluctuations within the sample with high spatial resolution.
La propriété qu'ont les points quantiques de confiner des charges élémentaires à des niveaux discrets d'énergie en font une plate-forme prometteuse pour la conception de nouveaux appareils électroniques et opto-électroniques. Les points quantiques auto-assemblés sont d'autant plus intéressants puisque leur taille, forme et matériau peuvent être contrôlés lors de leur croissance. Ces propriétés influencent le potentiel de confinement modifiant ainsi les niveaux d'énergies du point quantique. Toutefois, cette méthode de croissance ne permet pas de positionner les points quantiques et ceux-ci se retrouvent distribués aléatoirement sur la surface de l'échantillon. Cela rend difficile l'accès aux points quantiques par des techniques lithographiques pour effectuer des mesures de transport ou de détection de charge permettant d'en déterminer les propriétés.Un microscope à force atomique (AFM) permet d'accéder spatialement à des points quantiques individuels et en appliquant une tension électrique entre la pointe du cantilever et une électrode arrière, leurs niveaux d'énergies peuvent être mesurés au fur et à mesure que des électrons sont ajoutés dans un régime de blocage de Coulomb. Dans ces expériences, le cantilever oscillant est responsable simultanément du chargement des points par l'application d'une tension de grille et de la détection du passage d'électron par « effet tunnel » par un changement de fréquence de résonance et/ou de dissipation du cantilever.Nous utilisons un AFM pour mesurer les niveaux d'énergie dans des points quantiques à quelques électrons d'InAs auto-assemblés. L'énergie de chargement, l'espacement des niveaux et la configuration électronique de points individuels sont obtenus expérimentalement. Nous comparons nos résultats à un modèle théorique qui décrit en détail le mécanisme derrière l'interaction électrostatique dissipative due au passage d'électrons par « effet tunnel ».Des exemples de l'influence électrostatique de l'environnement sur les points quantiques sont aussi présentés, ainsi qu'une méthode pour utiliser l'AFM pour caractériser le bruit électrostatique. Les fluctuations de charge sont connues pour compromettre le bon fonctionnement des appareils électroniques et particulièrement des composants micro et nanométriques. L'irradiation de larges bandes d'énergie interdites produit un bruit de génération et de recombinaison à la surface de l'échantillon, mais pas sur les points quantiques auto-assemblés. Nous mesurons ce bruit avec un AFM et comparons les résultats obtenus sur la surface du point quantique et en dehors en démontrant qu'une résolution spatiale inférieure à 20 nm est réalisée. Nous démontrons ainsi qu'un AFM permet de caractériser le bruit provenant des fluctuations de charge d'un échantillon avec une haute résolution spatiale.
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Schkolnik, Gal [Verfasser], e Peter [Akademischer Betreuer] Hildebrandt. "Vibrational Stark Spectroscopy as a Tool for Probing Electrostatics at Protein Surfaces and Self Assembled Monolayers / Gal Schkolnik. Betreuer: Peter Hildebrandt". Berlin : Universitätsbibliothek der Technischen Universität Berlin, 2012. http://d-nb.info/1028912951/34.

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Ticha, Lawrence Awa. "Development of amperometric biosensor with cyclopentadienylruthenium (II) thiolato schiff base self-assembled monolayer (SAM) on gold". Thesis, University of the Western Cape, 2007. http://etd.uwc.ac.za/index.php?module=etd&action=viewtitle&id=gen8Srv25Nme4_5394_1341319478.

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A novel cyclopentadienylruthenium(II) thiolato Schiff base, [Ru(SC6H4NC(H)C6H4OCH2CH2SMe)(&eta
5-C2H5]2 was synthesized and deposited as a selfassembled monolayer (SAM) on a gold electrode. Effective electronic communication between the Ru(II) centers and the gold electrode was established by electrostatically cycling the Shiff base-doped gold electrode in 0.1 M NaOH from -200 mV to +600 mV. The SAMmodified gold electrode (Au/SAM) exhibited quasi-reversible electrochemistry. The integrity of this electro-catalytic SAM, with respect to its ability to block and electro-catalyze certain Faradaic processes, was interrogated using Cyclic and Osteryoung Square Wave voltammetric experiments. The formal potential, E0', varied with pH to give a slope of about - 34 mV pH-1. The surface concentration, &Gamma
, of the ruthenium redox centers was found to be 1.591 x 10-11 mol cm-2. By electrostatically doping the Au/SAM/Horseradish peroxidase at an applied potential of +700 mV vs Ag/AgCl, a biosensor was produced for the amperometric analysis of hydrogen peroxide, cumene hydroperoxide and tert-butylhydroperoxide. The electrocatalytic-type biosensors displayed typical Michaelis-Menten kinetics with their limits of detection of 6.45 &mu
M, 6.92 &mu
M and 7.01 &mu
M for hydrogen peroxide, cumene hydroperoxide and tert-butylhydroperoxide respectively.
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Degefa, Tesfaye Hailu. ""Ion channel (mimetic) sensors" mechanism of charge propagation through thiol-, protein- and dendrimer-modified electrodes /". Doctoral thesis, [S.l.] : [s.n.], 2005. http://deposit.ddb.de/cgi-bin/dokserv?idn=980218624.

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Kelley, John Joseph. "Controlling Gold Nanoparticle Assembly through Particle-Particle and Particle-Surface Interactions". University of Dayton / OhioLINK, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=dayton1533083850424849.

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"The formation of chiral nanopatterns on low-dimensional ionic assemblies via electrostatic interactions". NORTHWESTERN UNIVERSITY, 2010. http://pqdtopen.proquest.com/#viewpdf?dispub=3386524.

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Lee, Shu-Jhang, e 李書彰. "Coupled mechanisms and pull-in instabilities of assemblies composed of coupled elastic-electrodes, subjected to electrostatic force". Thesis, 2017. http://ndltd.ncl.edu.tw/handle/90826850400069105680.

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博士
崑山科技大學
機械與能源工程研究所
105
The mathematical model of the coupled system composed of two elastically restrained beams and probe-membrane (probe-ring typed membrane) system subjected to electrostatic force is constructed. It is different to the conventional clamped micro/nano actuator which is constructed by two independent fixed/mobile conducting electrodes. The formula of pull-in voltage is presented. The analytical method for the coupled vibration is presented. (1) the coupling system is only affected by the DC voltage. It is found that the critical ratio of the relative static displacement of the general system to the initial tip distance is 1/3. In the critical condition, pull-in instabilities will occur. In addition, a general formula for traction voltage is found. This is very helpful in designing micro / nano actuators, since the introduction voltage can be directly calculated by the formula. The relationship between the coupling frequency of the general system and the frequency of the individual beams is also found. (2) the effects of several parameters on the pull-in instability are studied. The analytical method for the coupled vibration is proposed. The effects of the probe tips and several differential boundary conditions of membrane on the coupled characteristics are investigated. The coupled characteristic mechanism is clearly described.
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Hyde, Gary Kevin. "Electrostatic self-assembled nanolayers on textile fibers". 2005. http://www.lib.ncsu.edu/theses/available/etd-04182005-123134/unrestricted/etd.pdf.

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Livros sobre o assunto "Electrostatic assemblies"

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Aboudzadeh, M. Ali, e Antonio Frontera, eds. Supramolecular Assemblies Based on Electrostatic Interactions. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-031-00657-9.

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Association, ESD. ESD Association technical report for the development of an electrostatic discharge control program for the protection of electronic parts, assemblies and equipment: Handbook. [United States?]: ESD Association, 2002.

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Shipway, Jennifer Mary. Coiled coils: Electrostatic interactions & macromolecular assemblies. 2002.

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Frontera, Antonio, e M. Ali Aboudzadeh. Supramolecular Assemblies Based on Electrostatic Interactions. Springer International Publishing AG, 2022.

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Inc, EOS-ESD Association. ANSI/ESD S20.20-2021 - ESD Association Standard for the Development of an Electrostatic Discharge Control Program for Protection of Electrical and Electronic Parts, Assemblies, and Equipment (Excluding Electrically Initiated Explosive Devices). EOS/ESD Association, Incorporated, 2021.

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Capítulos de livros sobre o assunto "Electrostatic assemblies"

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Bauzá, Antonio, e Antonio Frontera. "Supramolecular Assemblies Based on σ-hole Interactions". In Supramolecular Assemblies Based on Electrostatic Interactions, 203–41. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-031-00657-9_7.

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Leung, Franco King-Chi. "Aqueous Supramolecular Assemblies of Photocontrolled Molecular Amphiphiles". In Supramolecular Assemblies Based on Electrostatic Interactions, 267–308. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-031-00657-9_9.

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Frontera, Antonio, e Antonio Bauzá. "Regium Bonds: A Bridge Between Coordination and Supramolecular Chemistry". In Supramolecular Assemblies Based on Electrostatic Interactions, 243–65. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-031-00657-9_8.

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Aboudzadeh, M. Ali. "Supramolecular Ionic Networks: Design and Synthesis". In Supramolecular Assemblies Based on Electrostatic Interactions, 1–27. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-031-00657-9_1.

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Doncel-Giménez, Azahara, Joaquín Calbo, Enrique Ortí e Juan Aragó. "Computational Modelling of Supramolecular Polymers". In Supramolecular Assemblies Based on Electrostatic Interactions, 341–84. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-031-00657-9_11.

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Yang, Yuqing, Ehsan Raee, Yifan Zhou e Tianbo Liu. "The Role of Electrostatic Interaction in the Self-assembly of Macroions". In Supramolecular Assemblies Based on Electrostatic Interactions, 55–84. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-031-00657-9_3.

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Guzmán, Eduardo, Ana Mateos-Maroto, Francisco Ortega e Ramón G. Rubio. "Electrostatic Layer-by-Layer Self-Assembly Method: A Physico-Chemical Perspective". In Supramolecular Assemblies Based on Electrostatic Interactions, 169–202. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-031-00657-9_6.

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Marullo, Salvatore, Carla Rizzo e Francesca D’Anna. "Organic Salts as Tectons for Self-assembly Processes in Solution". In Supramolecular Assemblies Based on Electrostatic Interactions, 309–39. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-031-00657-9_10.

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Aboudzadeh, M. Ali, e Shaghayegh Hamzehlou. "Supramolecular Ionic Networks: Properties". In Supramolecular Assemblies Based on Electrostatic Interactions, 29–54. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-031-00657-9_2.

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Concellón, Alberto, e Verónica Iguarbe. "Ionic Self-Assembly of Dendrimers". In Supramolecular Assemblies Based on Electrostatic Interactions, 85–118. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-031-00657-9_4.

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Trabalhos de conferências sobre o assunto "Electrostatic assemblies"

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Li, Sha, Anton Sidorov, Anil K. Mehta, Dibyendu Das, Zhigang Jiang, Thomas M. Orlando e David G. Lynn. "Analysis of Supramolecular Assemblies via Electrostatic Force Microscopy". In The Twenty-Third American and the Sixth International Peptide Symposium. Prompt Scientific Publishing, 2013. http://dx.doi.org/10.17952/23aps.2013.156.

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Jon, M., P. H. Read, T. L. Welsher e H. Nicholl. "Mitigating Electrostatic Discharge (esd) In Solid CO/sub 2/ Pellet Cleaning Of Printed Wiring Boards And Assemblies". In Proceedings Electrical Overstress/Electrostatic Discharge Symposium. IEEE, 1997. http://dx.doi.org/10.1109/eosesd.1997.634237.

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Pagonakis, J. Gr. "Three-Dimensional Self-Consistent Electrostatic Simulations of Gyrotron Beam Tunnel Assemblies". In HIGH ENERGY DENSITY AND HIGH POWER RF: 7th Workshop on High Energy Density and High Power RF. AIP, 2006. http://dx.doi.org/10.1063/1.2158788.

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Hasan, Mohammad H., Fadi Alsaleem, Amin Abbasalipour, Siavash Pourkamali Anaraki, Muhammad Emad-Un-Din e Roozbeh Jafari. "Machine Learning Augmentation in Micro-Sensor Assemblies". In ASME 2020 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2020. http://dx.doi.org/10.1115/detc2020-22665.

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Abstract The size and power limitations in small electronic systems such as wearable devices limit their potential. Significant energy is lost utilizing current computational schemes in processes such as analog-to-digital conversion and wireless communication for cloud computing. Edge computing, where information is processed near the data sources, was shown to significantly enhance the performance of computational systems and reduce their power consumption. In this work, we push computation directly into the sensory node by presenting the use of an array of electrostatic Microelectromechanical systems (MEMS) sensors to perform colocalized sensing-and-computing. The MEMS network is operated around the pull-in regime to access the instability jump and the hysteresis available in this regime. Within this regime, the MEMS network is capable of emulating the response of the continuous-time recurrent neural network (CTRNN) computational scheme. The network is shown to be successful at classifying a quasi-static input acceleration waveform into square or triangle signals in the absence of digital processors. Our results show that the MEMS may be a viable solution for edge computing implementation without the need for digital electronics or micro-processors. Moreover, our results can be used as a basis for the development of new types of specialized MEMS sensors (ex: gesture recognition sensors).
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Subramaniam, V., M. E. Last e K. S. J. Pister. "Methods and Characterization of Pick and Place Microassembly". In ASME 2006 International Mechanical Engineering Congress and Exposition. ASMEDC, 2006. http://dx.doi.org/10.1115/imece2006-15043.

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Microassembly of MEMS structures using serial pick-and place has been demonstrated as a method for constructing complex three-dimensional microstructures. A new methodology to perform pick-and-place microassembly using a 3 DOF micromanipulator is demonstrated here. In this approach, the "pick" operation is performed on one chip, while the "place" operation is performed on a second chip mounted orthogonally to it under a microscope. This removes the need for the rotation of parts during assembly as required in previous works thus creating a significantly simpler assembly process. Also new in this work is the characterization of the contact resistance and the rigidity of assembled microstructures. The contact resistance of assembled microparts coated with 30nm of gold is measured to be approximately 12Ωusing a four-point measurement. The force required to pull out a micropart from a socket (into which it is assembled) is characterized along all three axes and found to be over 5mN in each case. The relationship between the force taken to engage the sockets and the force to pull out a micropart is measured to be linear. An electrostatic inchworm motor with extended range and a vertical thermal actuator are demonstrated which are manufactured using microassembly. Thus this assembly process with mechanically rigid assemblies is shown to have a number of potential applications.
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Jian Ji e Jiacong Shen. "Electrostatic Self-assemble and Nanomedicine". In 2005 IEEE Engineering in Medicine and Biology 27th Annual Conference. IEEE, 2005. http://dx.doi.org/10.1109/iembs.2005.1616515.

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Miley, George H., Hiromu Momota, Hugo Leon, Ben Ulmen, Guilherme Amadio, Atanu Khan, George Chen, William Matisiak, Ali Azeem e Paul Keutelian. "Cylindrical IEC Fusion Neutron Source for Broad Area NAA". In 18th International Conference on Nuclear Engineering. ASMEDC, 2010. http://dx.doi.org/10.1115/icone18-30368.

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The development of a unique long cylindrical neutron source for broad area neutron activation analysis (NAA) is presented. This source uses inertial electrostatic confinement (IEC) to produce 2.54 MeV D-D or 14.1 MeV D-T fusion neutrons for applications ranging from security inspection stations to driven-subcritical research assemblies. This design uses a biased grid to initial in a unique “star” mode plasma discharge forming beam-background gas (target) fusion. In spherical geometry it routinely produces ∼108 2.54-MeV D-D fusion neutrons/s at steady-state. Pulsed operation has achieved up to 109 neutrons/sec. (equivalent to 1011 n/s using D-T fill). Indeed, a version of the spherical IEC has been produced commercially as a portable neutron source for industrial NAA applications. Recently a cylindrical (2-dimensional version) design based on the spherical unit has been developed. This provides a unique long “line-like” neutron source for use in broad area NAA. This IEC forms ion beams in the volume between the grounded wall and the concentric cylindrical grid. Those beams converge in the center, much like in the star mode spherical IEC. To date, neutron yields of up to 108 D-D neutrons/sec have been achieved with the cylindrical device. A sealed-off unit using getters for gas storage-control has been developed to simplify use in practical applications such as a luggage inspection station. Such units would be filled with deuterium at a central fueling facility, and sent out to the field. After extended operation, they would be returned to this facility for refilling.
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Quevy, E., L. Buchaillot, P. Bigotte e D. Collard. "3D self-assembling and actuation of electrostatic micro-mirrors". In 30th European Solid-State Device Research Conference. IEEE, 2000. http://dx.doi.org/10.1109/essderc.2000.194802.

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Xi, Jianzhong, Jacob Schmidt e Carlo Montemagno. "Self-Assembled Silicon Microdevices Driven by Muscle". In ASME 2004 3rd Integrated Nanosystems Conference. ASMEDC, 2004. http://dx.doi.org/10.1115/nano2004-46075.

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Over the last two decades, a variety of micro-robotic systems have been developed including electrothermal, electrostatic, electrochemical, piezoelectric, and electromagnetic actuators based on MEMS technology. The development of these micro-actuators promises a revolution in biological and medical research and applications analogous to that brought about by the miniaturization of electrical devices in information technology. For example, controllable manipulation of these tiny actuators may enable precise temporal and spatial delivery of chemicals, micro-optics or microelectronics to specific targeted sites.
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Claus, R., T. Zeng, K. Huie, J. Huie, J. Mecham, F. Arregui e I. Matias. "Molecularly Self-Assembled Actuators and Devices". In ASME 2002 International Mechanical Engineering Congress and Exposition. ASMEDC, 2002. http://dx.doi.org/10.1115/imece2002-33941.

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Piezoelectric thin films incorporating poly(sodium 4-styrenesolfonate) (PSS) and poly(diallyldimethylammonium chloride) (PDDA) were synthesized using the electrostatic self-assembly (ESA) process. The ESA-processed PSS/PDDA film is a layer-by-layer laminated structure, which exhibits piezoelectric response directly, with a piezoelectric coefficient d33 = 6.0 pC/N and without poling treatment. It is assumed that the self-assembly process may play a very important role in molecular alignment resulting in net polarization in the layer-by-layer structured ultrathin film, a process quite different from that used to form conventional piezoelectric films. Further study concerning the principles governing the novel ESA processing of piezoelectric films and self-assembled materials, sensors and actuators is on-going.
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Relatórios de organizações sobre o assunto "Electrostatic assemblies"

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Smith, H. G. Surface-Bound Membrane-Mimetic Assemblies: Electrostatic Attributes of Integral Membrane Proteins. Fort Belvoir, VA: Defense Technical Information Center, outubro de 1988. http://dx.doi.org/10.21236/ada204381.

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Smith, H. G. Surface-Bound Membrane-Mimetic Assemblies: Electrostatic Attributes of Integral Membrane Proteins. Fort Belvoir, VA: Defense Technical Information Center, junho de 1991. http://dx.doi.org/10.21236/ada237229.

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Kinzel, Robert L. An analysis of electrostatic discharge considerations in the use of sodium bicarbonate media for de-potting sensitive electronic assemblies. Office of Scientific and Technical Information (OSTI), julho de 2012. http://dx.doi.org/10.2172/1051719.

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Wetzel, Eric D., e Frederick L. Beyer. Self-Assembling Nanomembranes Through Electrostatic Melt Processing of Copolymer Films. Fort Belvoir, VA: Defense Technical Information Center, agosto de 2002. http://dx.doi.org/10.21236/ada406016.

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