Bibliografías temáticas / Planar Nanomaterials

Literatura académica sobre el tema "Planar Nanomaterials"

Autor: Grafiati
Publicado: 7 de septiembre de 2023

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Artículos de revistas sobre el tema "Planar Nanomaterials"

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Story, S. Drew, Stephen Boggs, Linda M. Guiney, Mani Ramesh, Mark C. Hersam, C. Jeffrey Brinker y Sharon L. Walker. "Aggregation morphology of planar engineered nanomaterials". Journal of Colloid and Interface Science 561 (marzo de 2020): 849–53. http://dx.doi.org/10.1016/j.jcis.2019.11.067.

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Qu, Xin, Jinghai Yang, Yanchao Wang, Jian Lv, Zhongfang Chen y Yanming Ma. "A two-dimensional TiB4monolayer exhibits planar octacoordinate Ti". Nanoscale 9, n.º 45 (2017): 17983–90. http://dx.doi.org/10.1039/c7nr05688e.

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At present, the concept of planar hypercoordination in chemistry meets the fast development of two-dimensional (2D) nanomaterials, leading to considerable interest in searching for 2D materials with planar hypercoordinate atoms.
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Amaro, Andrea, Adrian Suarez, Jose Torres, Pedro A. Martinez, Roberto Herraiz, Antonio Alcarria, Adolfo Benedito, Rocio Ruiz, Pedro Galvez y Antonio Penades. "Shielding Effectiveness Measurement Method for Planar Nanomaterial Samples Based on CNT Materials up to 18 GHz". Magnetochemistry 9, n.º 5 (25 de abril de 2023): 114. http://dx.doi.org/10.3390/magnetochemistry9050114.

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The study and measurement of the shielding effectiveness (SE) of planar materials is required to predict the suitability of a certain material to form an enclosed electromagnetic shield. One of the most widely used standards for measuring the SE of planar materials is ASMT D4935-18. It is based on a coaxial sample holder (CSH) that operates up to 1.5 GHz. Due to this standard’s frequency limitations, new variants with higher frequency limits have been developed by decreasing the size of the CSH conductors and the samples. However, this method and its high-frequency variants require two types of samples with very specific geometries and sizes. This method is unsuitable for certain types of nanomaterials due to their complex mechanization at such undersized scales. This contribution proposes an alternative SE measurement method based on an absorber box that mitigates the problems presented by the ASTM D4935-18 standard. The SE of rigid nanomaterial samples based on several concentrations of multi-walled carbon nanotubes (MWCNT) and two different fiber reinforcements have been obtained.
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Sivakumar, Ponnurengam M., Matin Islami, Ali Zarrabi, Arezoo Khosravi y Shohreh Peimanfard. "Polymer-Graphene Nanoassemblies and their Applications in Cancer Theranostics". Anti-Cancer Agents in Medicinal Chemistry 20, n.º 11 (8 de julio de 2020): 1340–51. http://dx.doi.org/10.2174/1871520619666191028112258.

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Background and objective: Graphene-based nanomaterials have received increasing attention due to their unique physical-chemical properties including two-dimensional planar structure, large surface area, chemical and mechanical stability, superconductivity and good biocompatibility. On the other hand, graphene-based nanomaterials have been explored as theranostics agents, the combination of therapeutics and diagnostics. In recent years, grafting hydrophilic polymer moieties have been introduced as an efficient approach to improve the properties of graphene-based nanomaterials and obtain new nanoassemblies for cancer therapy. Methods and results: This review would illustrate biodistribution, cellular uptake and toxicity of polymergraphene nanoassemblies and summarize part of successes achieved in cancer treatment using such nanoassemblies. Conclusion: The observations showed successful targeting functionality of the polymer-GO conjugations and demonstrated a reduction of the side effects of anti-cancer drugs for normal tissues.
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Wüest, R. "Proximity-effect induced density limitations for electron-beam patterned planar photonic nanomaterials". Photonics and Nanostructures - Fundamentals and Applications 7, n.º 4 (diciembre de 2009): 212–19. http://dx.doi.org/10.1016/j.photonics.2009.09.001.

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Karakashov, Blagoj, Martine Mayne-L’Hermite y Mathieu Pinault. "Conducting Interface for Efficient Growth of Vertically Aligned Carbon Nanotubes: Towards Nano-Engineered Carbon Composite". Nanomaterials 12, n.º 13 (4 de julio de 2022): 2300. http://dx.doi.org/10.3390/nano12132300.

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Vertically aligned carbon nanotubes (VACNT) are manufactured nanomaterials with excellent properties and great potential for numerous applications. Recently, research has intensified toward achieving VACNT synthesis on different planar and non-planar substrates of various natures, mainly dependent on the user-defined application. Indeed, VACNT growth has to be adjusted and optimized according to the substrate nature and shape to reach the requirements for the application envisaged. To date, different substrates have been decorated with VACNT, involving the use of diffusion barrier layers (DBLs) that are often insulating, such as SiO2 or Al2O3. These commonly used DBLs limit the conducting and other vital physico-chemical properties of the final nanomaterial composite. One interesting route to improve the contact resistance of VACNT on a substrate surface and the deficient composite properties is the development of semi-/conducting interlayers. The present review summarizes different methods and techniques for the deposition of suitable conducting interfaces and controlled growth of VACNT on diverse flat and 3-D fibrous substrates. Apart from exhibiting a catalytic efficiency, the DBL can generate a conducting and adhesive interface involving performance enhancements in VACNT composites. The abilities of different conducting interlayers are compared for VACNT growth and subsequent composite properties. A conducting interface is also emphasized for the synthesis of VACNT on carbonaceous substrates in order to produce cost-effective and high-performance nano-engineered carbon composites.
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Wang, Zhen, Zhiming Liu, Chengkang Su, Biwen Yang, Xixi Fei, Yi Li, Yuqing Hou et al. "Biodegradable Black Phosphorus-based Nanomaterials in Biomedicine: Theranostic Applications". Current Medicinal Chemistry 26, n.º 10 (20 de junio de 2019): 1788–805. http://dx.doi.org/10.2174/0929867324666170920152529.

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Ascribe to the unique two-dimensional planar nanostructure with exceptional physical and chemical properties, black phosphorous (BP) as the emerging inorganic twodimensional nanomaterial with high biocompatibility and degradability has been becoming one of the most promising materials of great potentials in biomedicine. The exfoliated BP sheets possess ultra-high surface area available for valid bio-conjugation and molecular loading for chemotherapy. Utilizing the intrinsic near-infrared optical absorbance, BPbased photothermal therapy in vivo, photodynamic therapy and biomedical imaging has been realized, achieving unprecedented anti-tumor therapeutic efficacy in animal experiments. Additionally, the BP nanosheets can strongly react with oxygen and water, and finally degrade to non-toxic phosphate and phosphonate in the aqueous solution. This manuscript aimed to summarize the preliminary progresses on theranostic application of BP and its derivatives black phosphorus quantum dots (BPQDs), and discussed the prospects and the state-of-art unsolved critical issues of using BP-based material for theranostic applications.
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Kasarla, Sarveshwar, Vimala Saravanan, Vidhya Prasanth y Manjula Selvam. "The Influence of Thermoelectric Properties of Nanomaterial and Applications". Journal on Materials and its Characterization 1, n.º 1 (1 de diciembre de 2022): 1–5. http://dx.doi.org/10.46632/jmc/1/1/1.

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To assess the thermoelectric qualities of low-dimensional materials, a nanomaterial was created. Due to its inherent nanoscale structure, a one-dimensional thermoelectric material is predicted to have superior thermoelectric characteristics and low heat conductivity. High efficiency thermoelectric energy conversion devices can be realised by taking use of these better features. Graphene and hexagonal boron nitride (h-BN), two-dimensional nanomaterials, are thermally efficient. Due to the differences in the crystal lattice and electrical structure between graphene and h-BN, a new material with novel thermal properties is created when the two join to produce a planar C-BN hybrid structure or a van der Waals heterostructure. We concentrate on these new qualities while reviewing the two new materials, as their thermal properties affect their structure, size, and number of layers. To assess the thermoelectric qualities of low-dimensional materials, a micro-instrument was created. Due to its inherent nanoscale structure, a one-dimensional thermoelectric material is predicted to have superior thermoelectric characteristics and low heat conductivity. High efficiency thermoelectric energy conversion devices can be realised by taking use of these better features. In this study, we used micromachining to create microdevices to examine the thermoelectric characteristics of low-dimensional materials. The system comprises of a tiny thermocouple with a freely suspended heating element acting as the sensing element. Manipulation was used to place an array of Bi2Te3 nanowires made using the silicon template approach on the microdevice. To show the device’s ability to assess the thermoelectric properties of nanomaterials, measurements of the Bi2Te3 bundle’s electrical, thermal, and Beck coefficients were made. More information about this source text source text necessary for further translation details. We offer a synthetic method for producing Cu2ZnGeSe4 nanocrystals with a limited size range and a predetermined composition. By hot pressing, these nanocrystals were employed to create nanomaterials that were tightly packed. These nanoparticles’ Cu2ZnGeSe4 thermoelectric characteristics have been demonstrated to be very good. A figure of merit of up to 0.55 at 450 °C has already been achieved through early refinement of the nanocrystal composition. The performance of thermoelectric (TE) materials is currently the subject of intense research. One of the suggestions for enhancing their TE performance is nanostructuring. However, a nanomaterial’s shape can have a big impact on how it behaves under tension. In this study, we showed that this action uses a microwave-assisted chemical pathway to create zinc oxide (ZnO) in two distinct forms. The molar ratios of the initial precursors were altered to create nanoparticles (NPs) and nanorods (NRs). According to the results, NRs have better TE properties than NPs, especially at higher temperatures.
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Goldenberg, Leonid M., Mathias Köhler y Christian Dreyer. "SiO2 Nanoparticles-Acrylate Formulations for Core and Cladding in Planar Optical Waveguides". Nanomaterials 11, n.º 5 (3 de mayo de 2021): 1210. http://dx.doi.org/10.3390/nano11051210.

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A combination of acrylate formulations and SiO2 nanoparticles is investigated with the aim to improve the optical properties of low-refractive index polymers that are used for the fabrication of planar optical waveguides. A decrease in refractive index and also in the thermo-optic coefficient of nanocomposite materials is clearly demonstrated, while some formulations exhibit an increase in the glass transition temperature. The possibility of using these nanocomposite materials to fabricate waveguiding layers with low optical propagation losses at telecommunication wavelengths around 1550 nm is also shown. The nanomaterials can be applied in optical microchips on polymer platforms.
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Kylián, O., D. Nikitin, J. Hanuš, S. Ali-Ogly, P. Pleskunov y H. Biederman. "Plasma-assisted gas-phase aggregation of clusters for functional nanomaterials". Journal of Vacuum Science & Technology A 41, n.º 2 (marzo de 2023): 020802. http://dx.doi.org/10.1116/6.0002374.

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The application of low-temperature plasma-based methods for the synthesis of functional nanomaterials has been growing for several decades and nanoparticles (NPs) play an increasing role in this effort. NPs have been considered for numerous applications such as optoelectronic energy conversion, electrocatalysis for fuel cells, novel plasmonic materials, electroluminescence, macromolecular self-assembly, supramolecular chemistry, and biomedical applications. The focus of this review will be devoted to NPs prepared by vacuum-based plasma-assisted sources. In the majority of cases, plasma has been excited by a planar magnetron. At first, concisely, the state-of-the-art of plasma-based gas aggregation cluster sources is presented. Then, the stability of the deposition process and enhancement of the production yield as well as tailoring of the composition, structure, and shape of NPs are discussed. In addition, in-flight modification of NPs, the interaction of NPs with a substrate, and deposition onto the liquids are presented.
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Tesis sobre el tema "Planar Nanomaterials"

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Seinberg, Liis. "Low Temperatures Synthesis and Properties of Ferromagnetic -Metal Nanomaterials and Square-Planar Coordinate Iron Oxides". 京都大学 (Kyoto University), 2013. http://hdl.handle.net/2433/174955.

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Tian, Furong [Verfasser]. "Influence of nanomaterials on cell function / Max-Planck-Institut für Metallforschung, Stuttgart. Vorgelegt von Furong Tian". Stuttgart : Max-Planck-Inst. für Metallforschung, 2006. http://d-nb.info/980324068/34.

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Koehle-Divo, Vanessa. "Effets de nanomatériaux chez deux espèces de bivalves le long d'un gradient de salinité : approches intégrées physiologiques et moléculaires". Electronic Thesis or Diss., Université de Lorraine, 2019. http://www.theses.fr/2019LORR0254.

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Les nanotechnologies sont en plein essor et mènent à l’incorporation de nanomatériaux manufacturés (NMM) dans les produits d’usage courant. La synthèse de NMM et l’utilisation des produits en contenant conduit au rejet dans l’environnement de NMM pour lesquels le risque n’est pas encore connu. Les propriétés physico-chimiques particulières des NMM rendent difficile l’évaluation de leur toxicité qui reste encore actuellement non complétement élucidée. Cette thèse est intégrée au projet ANR NanoSalt (2013 - 2017) et vise à évaluer le devenir et les effets de NMM de dioxyde de cérium et d’oxyde de cuivre sur deux espèces de bivalves représentatives des eaux douces (Corbicula fluminea) et des eaux marines (Scrobicularia plana). Les organismes ont été exposés à des concentrations réalistes de ces NMM à différentes étapes de leur cycle de vie et ce, à travers la mise en place d’expositions de plus en plus proches des conditions environnementales (micro- et mésocosmes). Actuellement, très peu d'études de nanotoxicologie ont adopté une approche de biologie moléculaire pour évaluer et comprendre les effets des NMM chez les invertébrés, particulièrement chez les espèces non séquencées. Un des objectifs de la thèse était d’utiliser l'approche de qPCR pour évaluer la perturbation de l’expression de gènes par les NMM. Ce travail a permis de déterminer le devenir et le comportement des NMM dans les différentes conditions d’exposition. L’évaluation des effets des NMM a été réalisée à différents niveaux biologiques (moléculaire, cellulaire, individuel). L’utilisation d’outils de statistiques multivariées s’est révélée particulièrement utile pour analyser les variations d’expression des nombreux gènes ciblés. L’approche multi-marqueurs sur plusieurs niveaux biologiques a permis l’intégration d’un grand nombre de données qui a généralement permis de départager les effets des différentes formes de NMM
Nanotechnology is constantly evolving and leads to the incorporation of engineered nanomaterials (ENM) into daily commercial products. The synthesis of ENM and the use of products containing those ENM leads to their release in the environment but the risk of ENM is not yet known. The particular physico-chemical properties of ENM makes the evaluation of their toxicity particularly difficult and still not completely solved now. This thesis is integrated to the ANR NanoSALT (2013-2017) and aims to evaluate the fate and the effects of cerium dioxide and copper oxide ENM in two bivalve species representative of freshwaters (Corbicula fluminea) and of seawaters (Scrobicularia plana). The organisms were exposed to realistic concentrations of these ENM at different stage of their life-cycle, and through the setting up of exposure increasingly closed to environmental conditions (micro- and mesocosms). Nowadays, few nanotoxicology studies have adopted an approach of molecular biology for the evaluation and the comprehension of ENM effects in invertebrates, and more particularly in non-sequenced species. One of the objective of the thesis was to use the qPCR approach for the evaluation of the gene expression perturbation by ENM. This work allowed to determine the fate and the behavior of ENM in the different exposure conditions. The evaluation of ENM effects has been done at different biological scales (molecular, cellular, individual). The use of multivariate statistical tools has been particularly useful for the analysis of the expression variations of the targeted genes. The multi-marker approach at different biological scales allowed the integration of a lot of data, which generally allowed us to differentiate the effects of the different forms of ENM
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Dickinson, Edmund John Farrer. "Charge transport dynamics in electrochemistry". Thesis, University of Oxford, 2011. http://ora.ox.ac.uk/objects/uuid:e4acac56-7265-49ec-9a36-49b3ae6729ed.

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Electrolytic solutions contain mobile ions that can pass current, and are essential components of any solution-phase electrochemical system. The Nernst–Planck–Poisson equations describe the electrodynamics and transport dynamics of electrolytic solutions. This thesis applies modern numerical and mathematical techniques in order to solve these equations, and hence determine the behaviour of electrochemical systems involving charge transport. The following systems are studied: a liquid junction where a concentration gradient causes charge transport; an ideally polarisable electrode where an applied potential difference causes charge transport; and an electrochemical cell where electrolysis causes charge transport. The nanometre Debye length and nanosecond Debye time scales are shown to control charge separation in electrolytic solutions. At equilibrium, charge separation is confined to within a Debye length scale of a charged electrode surface. Non-equilibrium charge separation is compensated in solution on a Debye time scale following a perturbation, whereafter electroneutrality dictates charge transport. The mechanism for the recovery of electroneutrality involves both migration and diffusion, and is non-linear for larger electrical potentials. Charge separation is an extremely important consideration on length scales comparable to the Debye length. The predicted features of capacitive charging and electrolysis at nanoelectrodes are shown to differ qualitatively from the behaviour of larger electrodes. Nanoscale charge separation can influence the behaviour of a larger system if it limits the overall rate of mass transport or electron transfer. This thesis advocates the use of numerical methods to solve the Nernst–Planck–Poisson equations, in order to avoid the simplifying approximations required by traditional analytical methods. As this thesis demonstrates, this methodology can reveal the behaviour of increasingly elaborate electrochemical systems, while illustrating the self-consistency and generality of fundamental theories concerning charge transport.
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Libros sobre el tema "Planar Nanomaterials"

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Oshiyama, Atsushi y Susumu Okada. Roles of shape and space in electronic properties of carbon nanomaterials. Editado por A. V. Narlikar y Y. Y. Fu. Oxford University Press, 2017. http://dx.doi.org/10.1093/oxfordhb/9780199533053.013.3.

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This article examines how internal space and boundary shapes affect the electronic properties of carbon nanomaterials by conducting total-energy electronic-structure calculations based on the density-functional theory. It first considers the existence of nanospace in carbon peapods before discussing boundaries in planar and tubular nanostructures. It also describes double-walled nanotubes, defects in carbon nanotubes, and hybrid structures of carbon nanotubes. Finally, it discusses the magnetic properties of zigzag-edged graphene ribbons and carbon nanotubes as well as the essential role of the edge state. The article shows that both space and peas (fullerenes) are decisive in electronic properties. In carbon peapods, nearly free-electron states occurring in the internal space hybridize with carbon orbitals and then make the peapod a new multicarrier system. The edge state belongs to a new class of electron states that is inherent to zigzag borders in hexagonally bonded networks.
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Bioinspired Nanomaterials. Materials Research Forum LLC, 2021. http://dx.doi.org/10.21741/9781644901571.

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Biological synthesis employing microorganisms, fungi or plants is an alternative method to produce nanoparticles in low-cost and eco-friendly ways. The book covers the synthesis of metal nanoparticles, metal oxide nanostructures and nanocomposite materials, as well as the stability and characterization of bioinspired nanomaterials. Applications include optical and electrochemical sensors, packaging, SERS and drug delivery processes.
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Ginley, David y Thomas Fix. Advanced Micro- and Nanomaterials for Photovoltaics. Elsevier, 2019.

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Ginley, David y Thomas Fix. Advanced Micro- and Nanomaterials for Photovoltaics. Elsevier, 2019.

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Saharan, Vinod y Ajay Pal. Chitosan Based Nanomaterials in Plant Growth and Protection. Springer, 2016.

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Saharan, Vinod y Ajay Pal. Chitosan Based Nanomaterials in Plant Growth and Protection. Springer London, Limited, 2016.

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Singh, Ashok K., Shivesh Sharma, Parvaiz Ahmad, Durgesh Kumar Tripathi y Devendra Kumar Chauhan. Nanomaterials in Plants, Algae and Microorganisms: Concepts and Controversies. Elsevier Science & Technology Books, 2017.

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Singh, Ashok K., Shivesh Sharma, Parvaiz Ahmad, Devendra Kumar Chauhan y Nawal Kishore Dubey. Nanomaterials in Plants, Algae and Microorganisms: Concepts and Controversies. Elsevier Science & Technology Books, 2018.

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Capítulos de libros sobre el tema "Planar Nanomaterials"

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Romanov, Sergei G. "Planar Hybrid Plasmonic-Photonic Crystals". En Nanomaterials and Nanoarchitectures, 273–99. Dordrecht: Springer Netherlands, 2015. http://dx.doi.org/10.1007/978-94-017-9921-8_9.

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Panda, Asit K. "Metamaterial-Inspired Planar Cells for Miniaturized Filtering Applications". En Materials Horizons: From Nature to Nanomaterials, 99–117. Singapore: Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-2267-3_6.

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Rauch, E. F. y L. Dupuy. "Textural Evolution during Equal Channel Angular Extrusion versus Planar Simple Shear". En Nanomaterials by Severe Plastic Deformation, 297–302. Weinheim, FRG: Wiley-VCH Verlag GmbH & Co. KGaA, 2005. http://dx.doi.org/10.1002/3527602461.ch5b.

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Panda, Asit K. "Some Aspects of Artificial Engineered Materials: Planar and Conformal Geometries". En Materials Horizons: From Nature to Nanomaterials, 17–38. Singapore: Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-2267-3_2.

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Palazon, Francisco, Pedro Rojo Romeo, Ali Belarouci, Céline Chevalier, Hassan Chamas, Éliane Souteyrand, Abdelkader Souifi, Yann Chevolot y Jean-Pierre Cloarec. "Site-Selective Self-Assembly of Nano-Objects on a Planar Substrate Based on Surface Chemical Functionalization". En Nanopackaging: From Nanomaterials to the Atomic Scale, 93–112. Cham: Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-21194-7_7.

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Pan, Xia-Hui, Shou-Wen Yu y Xi-Qiao Feng. "Oriented Thermomechanics for Isothermal Planar Elastic Surfaces Under Small Deformation". En IUTAM Symposium on Surface Effects in the Mechanics of Nanomaterials and Heterostructures, 1–13. Dordrecht: Springer Netherlands, 2012. http://dx.doi.org/10.1007/978-94-007-4911-5_1.

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Adassooriya, Nadeesh M., Ryan Rienzie y Nadun H. Madanayake. "Synthesis of Nanomaterials". En Nanoscale Technologies in Plant Sciences, 17–29. Boca Raton: CRC Press, 2023. http://dx.doi.org/10.1201/9781003346852-2.

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Kumari, R. Mankamna, Nikita Sharma, Geeta Arya y Surendra Nimesh. "Recent Progress in Applied Nanomaterials". En Plant Nanobionics, 33–64. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-12496-0_2.

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Adassooriya, Nadeesh M., Ryan Rienzie y Nadun H. Madanayake. "Characterization Techniques of Nanomaterials". En Nanoscale Technologies in Plant Sciences, 96–104. Boca Raton: CRC Press, 2023. http://dx.doi.org/10.1201/9781003346852-8.

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Selvakesavan, Rajendran K., Dariusz Kruszka, Preeti Shakya, Dibyendu Mondal y Gregory Franklin. "Impact of Nanomaterials on Plant Secondary Metabolism". En Nanomaterial Interactions with Plant Cellular Mechanisms and Macromolecules and Agricultural Implications, 133–70. Cham: Springer International Publishing, 2023. http://dx.doi.org/10.1007/978-3-031-20878-2_6.

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AbstractPlants encounter various nanomaterials (NMs) as pesticides and fertilizers. It is also possible that nanomaterials reach plants as waste from consumer products and industry. The effects of such NMs on plants have been widely studied, and both positive and negative effects of NMs on plant growth and development have been reported. Recent metabolomics studies suggest that nanoparticles affect the concentration of secondary metabolites in plants by modulating reactive nitrogen/oxygen species, gene expression, and signaling pathways. Secondary metabolites are plant compounds that accumulate in plants through their secondary metabolism. To date, more than 200,000 defined structures of secondary metabolites have been identified, among which many of them possess antibacterial, antifungal, antiviral, anti-inflammatory, hepatoprotective, antidepressant, antioxidant, neuroprotective, and anticancer properties. The application of elicitors is a simple strategy to increase the production of secondary metabolites in plant cell and tissues. The ability of nanomaterials to induce plant secondary metabolism has recently been exploited in the elicitation of pharmaceutically important compounds from various plant species. The ability of different NMs to induce the accumulation of different classes of compounds in the same plant species has also been accomplished. The molecular mechanisms behind the effects of NMs on plant secondary metabolism revealed the putative genes involved in NM-mediated elicitation of various plant compounds in several reports. This chapter reviews the current understanding of the effects of nanoparticles on plant secondary metabolism and the elicitation of pharmacologically important compounds from plant species.
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Actas de conferencias sobre el tema "Planar Nanomaterials"

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Wang, Lai-Sheng. "From planar boron clusters to borophenes and borospherenes". En International Symposium on Clusters and Nanomaterials, editado por Puru Jena y Anil K. Kandalam. SPIE, 2016. http://dx.doi.org/10.1117/12.2254384.

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Patel, Priya, Jaykumar Dave, Mohmadsohil Momin, Chirayu Sheth, Rushabh Gajab, Meet Dadhania y Rutu Parekh. "CNTFET: Comparative Study of Planar and Coaxial". En 2022 IEEE International Conference on Nanoelectronics, Nanophotonics, Nanomaterials, Nanobioscience & Nanotechnology (5NANO). IEEE, 2022. http://dx.doi.org/10.1109/5nano53044.2022.9828964.

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Chkhartishvili, Levan. "Boron quasi-planar clusters a mini-review on diatomic approach". En 2017 IEEE 7th International Conference "Nanomaterials: Application & Properties" (NAP). IEEE, 2017. http://dx.doi.org/10.1109/nap.2017.8190297.

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Ismaeel Maricar, M., J. Glover, G. A. Evans, Ata Khalid, V. Papageorgiou, Li Chong, G. Dunn et al. "Planar gunn diode characterisation and resonator elements to realise oscillator circuits". En 2013 International Conference on Advanced Nanomaterials and Emerging Engineering Technologies (ICANMEET). IEEE, 2013. http://dx.doi.org/10.1109/icanmeet.2013.6609384.

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Balaban, O., I. Grygorchak, A. Borysyuk, M. Larkin, O. Hevus, N. Mitina, A. Zaichenko, V. Datsyuk y S. Trotsenko. "Electrospining and physical properties of nanofiber polymer-inorganic planar quantum layers, hybridized with 0-D Fe2O3". En 2017 IEEE 7th International Conference "Nanomaterials: Application & Properties" (NAP). IEEE, 2017. http://dx.doi.org/10.1109/nap.2017.8190260.

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Allen, Ashante’, Andrew Cannon, William King y Samuel Graham. "Flexible Electronic Devices From Hot Embossing Materials Transfer". En ASME 4th Integrated Nanosystems Conference. ASMEDC, 2005. http://dx.doi.org/10.1115/nano2005-87068.

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The development of processing methods for flexible electronic devices is seen as an enabling technology for the creation of a new array of semiconductor products. These devices have the potential be low cost, disposable, and can be applied to deformable or non-planar surfaces. While much effort has been put into the development of amorphous silicon and organic semiconductor technology for flexible devices, semiconductor nanomaterials are of interest due to their inherently flexibility, high transport mobilities, and their unique optoelectronic and piezoelectric properties. However, the synthesis of these materials directly onto polymer substrates is not feasible due to the high temperatures or harsh chemical environments under which they are synthesized. This challenge has limited the development of flexible electronics with semiconductor nanomaterial building blocks. A number of techniques which address the manufacturing concerns include solution based processing [1,2] as well as dry transfer techniques [3–5]. In general, dry transfer printing methods carry advantages over solution based processing as the need to address substrate-fluid compatibility is mitigated.
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Du, H., S. H. Ng, K. T. Neo, M. Ng, I. S. Altman, S. Chiruvolu, N. Kambe, R. Mosso y K. Drain. "Inorganic-Polymer Nanocomposites for Optical Applications". En ASME 2006 Multifunctional Nanocomposites International Conference. ASMEDC, 2006. http://dx.doi.org/10.1115/mn2006-17088.

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The combination of organic and inorganic materials forms unique composites with properties that neither of the two components provides. Such functional materials are considered innovative advanced materials that enable applications in many fields, including optics, electronics, separation membranes, protective coatings, catalysis, sensors, biotechnology, and others. The challenge of incorporating inorganic particles into an organic matrix still remains today, especially for nanoparticles, due to the difficulties in their dispersion, de-agglomeration and surface modification. NanoGram has pioneered a nanomaterials synthesis technology based on laser pyrolysis process to produce a wide range of crystalline nanomaterials including complex metal oxides, nitrides and sulfides and with precisely controlled compositions, crystal structure, particle size and size distributions. In this paper we will present some examples of nanocomposites prepared using different polymer host materials and phase-pure rutile TiO2. The inorganic component can be dispersed at higher 50 weight percent into the polymer matrix. We have demonstrated a 0.2–0.3 increase of refractive index in the composite over that of host polymer while maintaining high optical transparency. These nanocomposites can be used in a range of applications or optical devices, such as planar waveguides, flat panel displays, optical sensors, high-brightness LEDs, diffraction gratings and optical data storage. Experimental data on TiO2 nanoparticle characterization, dispersion technique, surface modification and will be presented and nanocomposite properties discussed.
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Devaradjane, Ramaprasath y Donghyun Shin. "Enhanced Heat Capacity of Molten Salt Nano-Materials for Concentrated Solar Power Application". En ASME 2012 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/imece2012-87737.

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Storage of thermal energy using molten salt materials has been widely explored for concentrating solar power. Since these power plants use thermodynamic cycle, the overall system cycle efficiency significantly relies on the thermal energy storage temperature. Therefore, increasing the thermal energy storage temperature and decreasing the amount of material needed can result in reducing the cost of solar energy. Molten salts are stable up to 700°C, relatively cheap, and safe to the environment. However, the heat capacity of the molten salts is typically low (∼1.5 J/gK) compared to other thermal storage materials. The low heat capacity of molten salts can be improved by dispersing nanoparticles. In this study, we synthesized molten salt nanomaterial by dispersing oxide nanoparticles into selected molten salts. Heat capacity measurements were performed using a modulated differential scanning calorimeter. Materials characterization studies were performed using a scanning electron microscopy. Hence, we evaluated the use of the molten salt nanomaterials as thermal energy storage media in concentrated solar power applications. Increase in the specific heat capacity of the molten salt is also demonstrated on addition with Nano materials of specific size and quantity.
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Pyatibratov, M. G., A. S. Syutkin, S. N. Beznosov, A. V. Galeva y S. Yu Shchyogolev. "Bioengineering of archaeal flagella". En 2nd International Scientific Conference "Plants and Microbes: the Future of Biotechnology". PLAMIC2020 Organizing committee, 2020. http://dx.doi.org/10.28983/plamic2020.203.

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It was shown that the Haloferax volcanii flagella assembly system can accept alien flagellins and build functional recombinant flagella. The results can be used for targeted flagella modification to create multifunctional nanomaterials.
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Yang, Hongjoo y Debjyoti Banerjee. "Study of Specific Heat Capacity Enhancement of Molten Salt Nanomaterials for Solar Thermal Energy Storage (TES)". En ASME 2012 Third International Conference on Micro/Nanoscale Heat and Mass Transfer. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/mnhmt2012-75338.

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The overall thermal efficiency of solar power plants is highly sensitive to the operating characteristics of the Thermal Energy Storage (TES) devices. Enhancing the operating temperature of TES is imperative for enhancing the thermal efficacy of solar power plants. However, material property limitations for high temperature operation severely limit the choice of materials for TES. Molten salts and their eutectics are promising candidates for high temperature operation of TES. To enhance the thermal and operational efficiency of TES, the thermo-physical properties such as the specific heat capacity and thermal conductivity of the materials need to be maximized. The specific heat capacity (Cp) of molten salt is relatively smaller than other conventional TES materials. Recent studies have shown that addition of nanoparticles to molten salts can significantly enhance their specific heat capacity. Several transport and energy storage mechanisms have been proposed to account for these enhancements. Primarily, the layering of solvent molecules due to inter-molecular forces (due to competition between adhesive and cohesive forces) is observed at solid-liquid interface, leading to the formation of a more dense or “compressed layer” of solvent molecules on the dispersed nanoparticles. The formation and existence of the compressed layer has been demonstrated experimentally and from numerical predictions (e.g., Molecular Dynamics/ MD models). To verify the enhancement of specific heat capacity of molten salt nanofluids, the influence of compressed layer has been explored in this study. This implies that for the same amount (or concentration) of nanoparticle, the ratio of surface/volume of the individual nanoparticles can change significantly depending on the nanoparticles size and shape — which in turn can affect the mass fraction of the compressed layer formed on the surface of the nanoparticles. In this study, the specific heat capacity of the molten salt nanomaterials was investigated for: (a) silica nanoparticles in eutectic mixture of alkali chloride salt eutectics, and (b) silica nanoparticles in an eutectic mixture of alkali carbonate salts eutectics. The effect of the particle size distribution was considered in this study and it was observed that smaller nanoparticles contribute a larger proportion to the observed specific heat capacity enhancements. The size of distribution of the nanoparticles in the molten salt mixture/ nanomaterial (nanocomposites and nanofluids) was measured by using Scanning Electron Microscopy (SEM), and subsequently the actual number of nanoparticles (as a function of size) that were dispersed in molten salt fluid was calculated. The specific heat capacity of molten salt nanomaterial was calculated using a classical mixing model and by accounting for the contribution from the compressed layer in the mixture.
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Informes sobre el tema "Planar Nanomaterials"

1

none,. Implementation Plan for Chemical Industry R&D Roadmap for Nanomaterials by Design. Office of Scientific and Technical Information (OSTI), abril de 2006. http://dx.doi.org/10.2172/1218766.

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Kennedy, Alan, Natalie Smith, Alexander Linan y Laszlo Kovacs. Bioassay to assess toxicity of water-dispersed engineered nanomaterials in plants; Scientific Operating Procedure Series : Toxicology (T). Engineer Research and Development Center (U.S.), julio de 2019. http://dx.doi.org/10.21079/11681/33388.

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Chefetz, Benny, Baoshan Xing, Leor Eshed-Williams, Tamara Polubesova y Jason Unrine. DOM affected behavior of manufactured nanoparticles in soil-plant system. United States Department of Agriculture, enero de 2016. http://dx.doi.org/10.32747/2016.7604286.bard.

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The overall goal of this project was to elucidate the role of dissolved organic matter (DOM) in soil retention, bioavailability and plant uptake of silver and cerium oxide NPs. The environmental risks of manufactured nanoparticles (NPs) are attracting increasing attention from both industrial and scientific communities. These NPs have shown to be taken-up, translocated and bio- accumulated in plant edible parts. However, very little is known about the behavior of NPs in soil-plant system as affected by dissolved organic matter (DOM). Thus DOM effect on NPs behavior is critical to assessing the environmental fate and risks related to NP exposure. Carbon-based nanomaterials embedded with metal NPs demonstrate a great potential to serve as catalyst and disinfectors. Hence, synthesis of novel carbon-based nanocomposites and testing them in the environmentally relevant conditions (particularly in the DOM presence) is important for their implementation in water purification. Sorption of DOM on Ag-Ag₂S NPs, CeO₂ NPs and synthesized Ag-Fe₃O₄-carbon nanotubebifunctional composite has been studied. High DOM concentration (50mg/L) decreased the adsorptive and catalytic efficiencies of all synthesized NPs. Recyclable Ag-Fe₃O₄-carbon nanotube composite exhibited excellent catalytic and anti-bacterial action, providing complete reduction of common pollutants and inactivating gram-negative and gram-positive bacteria at environmentally relevant DOM concentrations (5-10 mg/L). Our composite material may be suitable for water purification ranging from natural to the industrial waste effluents. We also examined the role of maize (Zeamays L.)-derived root exudates (a form of DOM) and their components on the aggregation and dissolution of CuONPs in the rhizosphere. Root exudates (RE) significantly inhibited the aggregation of CuONPs regardless of ionic strength and electrolyte type. With RE, the critical coagulation concentration of CuONPs in NaCl shifted from 30 to 125 mM and the value in CaCl₂ shifted from 4 to 20 mM. This inhibition was correlated with molecular weight (MW) of RE fractions. Higher MW fraction (> 10 kDa) reduced the aggregation most. RE also significantly promoted the dissolution of CuONPs and lower MW fraction (< 3 kDa) RE mainly contributed to this process. Also, Cu accumulation in plant root tissues was significantly enhanced by RE. This study provides useful insights into the interactions between RE and CuONPs, which is of significance for the safe use of CuONPs-based antimicrobial products in agricultural production. Wheat root exudates (RE) had high reducing ability to convert Ag+ to nAg under light exposure. Photo-induced reduction of Ag+ to nAg in pristine RE was mainly attributed to the 0-3 kDa fraction. Quantification of the silver species change over time suggested that Cl⁻ played an important role in photoconversion of Ag+ to nAg through the formation and redox cycling of photoreactiveAgCl. Potential electron donors for the photoreduction of Ag+ were identified to be reducing sugars and organic acids of low MW. Meanwhile, the stabilization of the formed particles was controlled by both low (0-3 kDa) and high (>3 kDa) MW molecules. This work provides new information for the formation mechanism of metal nanoparticles mediated by RE, which may further our understanding of the biogeochemical cycling and toxicity of heavy metal ions in agricultural and environmental systems. Copper sulfide nanoparticles (CuSNPs) at 1:1 and 1:4 ratios of Cu and S were synthesized, and their respective antifungal efficacy was evaluated against the pathogenic activity of Gibberellafujikuroi(Bakanae disease) in rice (Oryza sativa). In a 2-d in vitro study, CuS decreased G. fujikuroiColony- Forming Units (CFU) compared to controls. In a greenhouse study, treating with CuSNPs at 50 mg/L at the seed stage significantly decreased disease incidence on rice while the commercial Cu-based pesticide Kocide 3000 had no impact on disease. Foliar-applied CuONPs and CuS (1:1) NPs decreased disease incidence by 30.0 and 32.5%, respectively, which outperformed CuS (1:4) NPs (15%) and Kocide 3000 (12.5%). CuS (1:4) NPs also modulated the shoot salicylic acid (SA) and Jasmonic acid (JA) production to enhance the plant defense mechanisms against G. fujikuroiinfection. These results are useful for improving the delivery efficiency of agrichemicals via nano-enabled strategies while minimizing their environmental impact, and advance our understanding of the defense mechanisms triggered by the NPs presence in plants.
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Choudhary, Ruplal, Victor Rodov, Punit Kohli, Elena Poverenov, John Haddock y Moshe Shemesh. Antimicrobial functionalized nanoparticles for enhancing food safety and quality. United States Department of Agriculture, enero de 2013. http://dx.doi.org/10.32747/2013.7598156.bard.

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Original objectives The general goal of the project was to utilize the bactericidal potential of curcumin- functionalizednanostructures (CFN) for reinforcement of food safety by developing active antimicrobial food-contact surfaces. In order to reach the goal, the following secondary tasks were pursued: (a) further enhancement of the CFN activity based on understanding their mode of action; (b) preparing efficient antimicrobial surfaces, investigating and optimizing their performance; (c) testing the efficacy of the antimicrobial surfaces in real food trials. Background to the topic The project dealt with reducing microbial food spoilage and safety hazards. Cross-contamination through food-contact surfaces is one of the major safety concerns, aggravated by bacterial biofilm formation. The project implemented nanotech methods to develop novel antimicrobial food-contact materials based on natural compounds. Food-grade phenylpropanoidcurcumin was chosen as the most promising active principle for this research. Major conclusions, solutions, achievements In agreement with the original plan, the following research tasks were performed. Optimization of particles structure and composition. Three types of curcumin-functionalizednanostructures were developed and tested: liposome-type polydiacetylenenanovesicles, surface- stabilized nanoparticles and methyl-β-cyclodextrin inclusion complexes (MBCD). The three types had similar minimal inhibitory concentration but different mode of action. Nanovesicles and inclusion complexes were bactericidal while the nanoparticlesbacteriostatic. The difference might be due to different paths of curcumin penetration into bacterial cell. Enhancing the antimicrobial efficacy of CFN by photosensitization. Light exposure strengthened the bactericidal efficacy of curcumin-MBCD inclusion complexes approximately three-fold and enhanced the bacterial death on curcumin-coated plastic surfaces. Investigating the mode of action of CFN. Toxicoproteomic study revealed oxidative stress in curcumin-treated cells of E. coli. In the dark, this effect was alleviated by cellular adaptive responses. Under light, the enhanced ROS burst overrode the cellular adaptive mechanisms, disrupted the iron metabolism and synthesis of Fe-S clusters, eventually leading to cell death. Developing industrially-feasible methods of binding CFN to food-contact surfaces. CFN binding methods were developed for various substrates: covalent binding (binding nanovesicles to glass, plastic and metal), sonochemical impregnation (binding nanoparticles to plastics) and electrostatic layer-by-layer coating (binding inclusion complexes to glass and plastics). Investigating the performance of CFN-coated surfaces. Flexible and rigid plastic materials and glass coated with CFN demonstrated bactericidal activity towards Gram-negative (E. coli) and Gram-positive (Bac. cereus) bacteria. In addition, CFN-impregnated plastic material inhibited bacterial attachment and biofilm development. Testing the efficacy of CFN in food preservation trials. Efficient cold pasteurization of tender coconut water inoculated with E. coli and Listeriamonocytogeneswas performed by circulation through a column filled with CFN-coated glass beads. Combination of curcumin coating with blue light prevented bacterial cross contamination of fresh-cut melons through plastic surfaces contaminated with E. coli or Bac. licheniformis. Furthermore, coating of strawberries with CFN reduced fruit spoilage during simulated transportation extending the shelf life by 2-3 days. Implications, both scientific and agricultural BARD Report - Project4680 Page 2 of 17 Antimicrobial food-contact nanomaterials based on natural active principles will preserve food quality and ensure safety. Understanding mode of antimicrobial action of curcumin will allow enhancing its dark efficacy, e.g. by targeting the microbial cellular adaptation mechanisms.
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