Dépouillements

The carbon new age / Antonio H. Castro Neto in Materials today, Vol. 13 N° 3 (Mars 2010) 

Public ISBD [article]  in Materials today > Vol. 13 N° 3 (Mars 2010) . - pp. 12–17 Titre : The carbon new age Type de document : texte imprimé Auteurs : Antonio H. Castro Neto, Auteur Année de publication : 2010 Article en page(s) : pp. 12–17 Note générale : Ingénierie Langues : Anglais (eng) Mots-clés : Carbon  Graphene  Metals  Electric  carriers Index. décimale : 620 Essais des matériaux. Matériaux commerciaux. Station génératrice d'énergie. Economie de l'énergie Résumé : Graphene has been considered by many as a revolutionary material with electronic and structural properties that surpass conventional semiconductors and metals. Due to its superlative qualities, graphene is being considered as the reference material for a post-CMOS technology. Furthermore, graphene is also quite unusual electronically since its electric carriers behave as if they were massless and relativistic, the so-called Dirac particles. Because of its exotic electronic properties, theorists are being forced to revisit the conceptual basis for the theory of metals. Hence, graphene seems to be unveiling a new era in science and technology with still unseen consequences. DEWEY : 620 ISSN : 1369-7021 En ligne : http://www.sciencedirect.com/science/article/pii/S1369702110700298 [article] The carbon new age [texte imprimé] / Antonio H. Castro Neto, Auteur . - 2010 . - pp. 12–17. Ingénierie Langues : Anglais (eng) in Materials today > Vol. 13 N° 3 (Mars 2010) . - pp. 12–17 Mots-clés : Carbon  Graphene  Metals  Electric  carriers Index. décimale : 620 Essais des matériaux. Matériaux commerciaux. Station génératrice d'énergie. Economie de l'énergie Résumé : Graphene has been considered by many as a revolutionary material with electronic and structural properties that surpass conventional semiconductors and metals. Due to its superlative qualities, graphene is being considered as the reference material for a post-CMOS technology. Furthermore, graphene is also quite unusual electronically since its electric carriers behave as if they were massless and relativistic, the so-called Dirac particles. Because of its exotic electronic properties, theorists are being forced to revisit the conceptual basis for the theory of metals. Hence, graphene seems to be unveiling a new era in science and technology with still unseen consequences. DEWEY : 620 ISSN : 1369-7021 En ligne : http://www.sciencedirect.com/science/article/pii/S1369702110700298

Carbon nanotubes for coherent spintronics / F. Kuemmeth in Materials today, Vol. 13 N° 3 (Mars 2010) 

Public ISBD [article]  in Materials today > Vol. 13 N° 3 (Mars 2010) . - pp. 18–26 Titre : Carbon nanotubes for coherent spintronics Type de document : texte imprimé Auteurs : F. Kuemmeth, Auteur ; H. O. H. Churchill, Auteur ; P.K. Herring, Auteur Année de publication : 2010 Article en page(s) : pp. 18–26 Note générale : Ingénierie Langues : Anglais (eng) Mots-clés : Carbon  nanotubes  Spin-electronic  devices  Nuclear  spin  Electronic  properties Index. décimale : 620 Essais des matériaux. Matériaux commerciaux. Station génératrice d'énergie. Economie de l'énergie Résumé : Carbon nanotubes bridge the molecular and crystalline quantum worlds, and their extraordinary electronic, mechanical and optical properties have attracted enormous attention from a broad scientific community. We review the basic principles of fabricating spin-electronic devices based on individual, electrically-gated carbon nanotubes, and present experimental efforts to understand their electronic and nuclear spin degrees of freedom, which in the future may enable quantum applications. DEWEY : 620 ISSN : 1369-7021 En ligne : http://www.sciencedirect.com/science/article/pii/S1369702110700304 [article] Carbon nanotubes for coherent spintronics [texte imprimé] / F. Kuemmeth, Auteur ; H. O. H. Churchill, Auteur ; P.K. Herring, Auteur . - 2010 . - pp. 18–26. Ingénierie Langues : Anglais (eng) in Materials today > Vol. 13 N° 3 (Mars 2010) . - pp. 18–26 Mots-clés : Carbon  nanotubes  Spin-electronic  devices  Nuclear  spin  Electronic  properties Index. décimale : 620 Essais des matériaux. Matériaux commerciaux. Station génératrice d'énergie. Economie de l'énergie Résumé : Carbon nanotubes bridge the molecular and crystalline quantum worlds, and their extraordinary electronic, mechanical and optical properties have attracted enormous attention from a broad scientific community. We review the basic principles of fabricating spin-electronic devices based on individual, electrically-gated carbon nanotubes, and present experimental efforts to understand their electronic and nuclear spin degrees of freedom, which in the future may enable quantum applications. DEWEY : 620 ISSN : 1369-7021 En ligne : http://www.sciencedirect.com/science/article/pii/S1369702110700304

Seeing graphene-based sheets / Jaemyung Kim in Materials today, Vol. 13 N° 3 (Mars 2010) 

Public ISBD [article]  in Materials today > Vol. 13 N° 3 (Mars 2010) . - pp. 28–38 Titre : Seeing graphene-based sheets Type de document : texte imprimé Auteurs : Jaemyung Kim, Auteur ; Franklin Kim, Auteur ; Jiaxing Huang, Auteur Année de publication : 2010 Article en page(s) : pp. 28–38 Note générale : Ingénierie Langues : Anglais (eng) Mots-clés : Graphene  Atomic  layers  Graphene  oxide  Imaging  techniques  Electron  microscopy Index. décimale : 620 Essais des matériaux. Matériaux commerciaux. Station génératrice d'énergie. Economie de l'énergie Résumé : Graphene-based sheets such as graphene, graphene oxide and reduced graphene oxide have stimulated great interest due to their promising electronic, mechanical and thermal properties. Microscopy imaging is indispensable for characterizing these single atomic layers, and oftentimes is the first measure of sample quality. This review provides an overview of current imaging techniques for graphene-based sheets and highlights a recently developed fluorescence quenching microscopy technique that allows high-throughput, high-contrast imaging of graphene-based sheets on arbitrary substrate and even in solution. DEWEY : 620 ISSN : 1369-7021 En ligne : http://www.sciencedirect.com/science/article/pii/S1369702110700316 [article] Seeing graphene-based sheets [texte imprimé] / Jaemyung Kim, Auteur ; Franklin Kim, Auteur ; Jiaxing Huang, Auteur . - 2010 . - pp. 28–38. Ingénierie Langues : Anglais (eng) in Materials today > Vol. 13 N° 3 (Mars 2010) . - pp. 28–38 Mots-clés : Graphene  Atomic  layers  Graphene  oxide  Imaging  techniques  Electron  microscopy Index. décimale : 620 Essais des matériaux. Matériaux commerciaux. Station génératrice d'énergie. Economie de l'énergie Résumé : Graphene-based sheets such as graphene, graphene oxide and reduced graphene oxide have stimulated great interest due to their promising electronic, mechanical and thermal properties. Microscopy imaging is indispensable for characterizing these single atomic layers, and oftentimes is the first measure of sample quality. This review provides an overview of current imaging techniques for graphene-based sheets and highlights a recently developed fluorescence quenching microscopy technique that allows high-throughput, high-contrast imaging of graphene-based sheets on arbitrary substrate and even in solution. DEWEY : 620 ISSN : 1369-7021 En ligne : http://www.sciencedirect.com/science/article/pii/S1369702110700316

Graded cross-links for stronger nanomaterials / Nicola M. Pugno in Materials today, Vol. 13 N° 3 (Mars 2010) 

Public ISBD [article]  in Materials today > Vol. 13 N° 3 (Mars 2010) . - pp. 40–43 Titre : Graded cross-links for stronger nanomaterials Type de document : texte imprimé Auteurs : Nicola M. Pugno, Auteur Année de publication : 2010 Article en page(s) : pp. 40–43 Note générale : Ingénierie Langues : Anglais (eng) Mots-clés : Nanomaterials  Graphene  Nanotube  Cross-link  stiffness Index. décimale : 620 Essais des matériaux. Matériaux commerciaux. Station génératrice d'énergie. Economie de l'énergie Résumé : Cross-links are nowadays recognized to play a key role in the overall mechanical strength of buckypapers, nanotube or graphene based materials; material scientists or chemists are thus developing new nanomaterials with denser and stronger cross-links in order to maximize their mechanical strength. However, in spite of some fascinating achievements of material science and chemistry today, we are evidently far from an optimal result; the reported mechanical strength of a buckypaper, for example, is comparable to that of a classical sheet of paper. In this concept article we try to solve the paradox showing that the cross-link stiffness, a parameter still ignored in the literature, governs (more than its strength) the overall mechanical strength. New strategies for the experimentalists, e.g. the use of graded cross-links, are consequently suggested. DEWEY : 620 ISSN : 1369-7021 En ligne : http://www.sciencedirect.com/science/article/pii/S1369702110700328 [article] Graded cross-links for stronger nanomaterials [texte imprimé] / Nicola M. Pugno, Auteur . - 2010 . - pp. 40–43. Ingénierie Langues : Anglais (eng) in Materials today > Vol. 13 N° 3 (Mars 2010) . - pp. 40–43 Mots-clés : Nanomaterials  Graphene  Nanotube  Cross-link  stiffness Index. décimale : 620 Essais des matériaux. Matériaux commerciaux. Station génératrice d'énergie. Economie de l'énergie Résumé : Cross-links are nowadays recognized to play a key role in the overall mechanical strength of buckypapers, nanotube or graphene based materials; material scientists or chemists are thus developing new nanomaterials with denser and stronger cross-links in order to maximize their mechanical strength. However, in spite of some fascinating achievements of material science and chemistry today, we are evidently far from an optimal result; the reported mechanical strength of a buckypaper, for example, is comparable to that of a classical sheet of paper. In this concept article we try to solve the paradox showing that the cross-link stiffness, a parameter still ignored in the literature, governs (more than its strength) the overall mechanical strength. New strategies for the experimentalists, e.g. the use of graded cross-links, are consequently suggested. DEWEY : 620 ISSN : 1369-7021 En ligne : http://www.sciencedirect.com/science/article/pii/S1369702110700328

Graphene single-electron transistors / T. Ihn in Materials today, Vol. 13 N° 3 (Mars 2010) 

Public ISBD [article]  in Materials today > Vol. 13 N° 3 (Mars 2010) . - pp. 44–50 Titre : Graphene single-electron transistors Type de document : texte imprimé Auteurs : T. Ihn, Auteur ; J. Güttinger, Auteur ; F. Molitor, Auteur Année de publication : 2010 Article en page(s) : pp. 44–50 Note générale : Ingénierie Langues : Anglais (eng) Mots-clés : Graphene  Carbon  Electronic  transport  Materials  Electron Index. décimale : 620 Essais des matériaux. Matériaux commerciaux. Station génératrice d'énergie. Economie de l'énergie Résumé : Graphene, a single layer of carbon atoms forming a perfectly stable and clean two-dimensional crystal with very few defects, has been proclaimed to be a new revolutionary material for electronics. These hopes rest mainly on the unique band structure properties of graphene. Although living essentially on the surface, electron mobilities in this material do not suffer extensively from surface contaminations and are surprisingly high even at room temperature. In comparison to extremely high quality semiconducting materials, such as Silicon and GaAs, the understanding of electronic transport in graphene is still in its infancy. Research on nanoscale transistors switching with only a single electron exemplifies that there are a number of unresolved problems that material scientists should tackle in the future for making the graphene dreams come true. DEWEY : 620 ISSN : 1369-7021 En ligne : http://www.sciencedirect.com/science/article/pii/S136970211070033X [article] Graphene single-electron transistors [texte imprimé] / T. Ihn, Auteur ; J. Güttinger, Auteur ; F. Molitor, Auteur . - 2010 . - pp. 44–50. Ingénierie Langues : Anglais (eng) in Materials today > Vol. 13 N° 3 (Mars 2010) . - pp. 44–50 Mots-clés : Graphene  Carbon  Electronic  transport  Materials  Electron Index. décimale : 620 Essais des matériaux. Matériaux commerciaux. Station génératrice d'énergie. Economie de l'énergie Résumé : Graphene, a single layer of carbon atoms forming a perfectly stable and clean two-dimensional crystal with very few defects, has been proclaimed to be a new revolutionary material for electronics. These hopes rest mainly on the unique band structure properties of graphene. Although living essentially on the surface, electron mobilities in this material do not suffer extensively from surface contaminations and are surprisingly high even at room temperature. In comparison to extremely high quality semiconducting materials, such as Silicon and GaAs, the understanding of electronic transport in graphene is still in its infancy. Research on nanoscale transistors switching with only a single electron exemplifies that there are a number of unresolved problems that material scientists should tackle in the future for making the graphene dreams come true. DEWEY : 620 ISSN : 1369-7021 En ligne : http://www.sciencedirect.com/science/article/pii/S136970211070033X

Graphene, a promising transparent conductor / Jonathan K. Wassei in Materials today, Vol. 13 N° 3 (Mars 2010) 

Public ISBD [article]  in Materials today > Vol. 13 N° 3 (Mars 2010) . - pp. 52–59 Titre : Graphene, a promising transparent conductor Type de document : texte imprimé Auteurs : Jonathan K. Wassei, Auteur ; Richard B. Kaner, Auteur Année de publication : 2010 Article en page(s) : pp. 52–59 Note générale : Ingénierie Langues : Anglais (eng) Mots-clés : Graphene  Hybrid  materials  Transparent  conductors  Graphite  oxide  Carbon  nanotubes Index. décimale : 620 Essais des matériaux. Matériaux commerciaux. Station génératrice d'énergie. Economie de l'énergie Résumé : New electronic devices such as touch screens, flexible displays, printable electronics, solid-state lighting and thin film photovoltaics have led to a rapidly growing market for flexible transparent conductors. Standard indium tin oxide films are unlikely to satisfy future needs due to losses in conductivity on bending and the escalating cost of indium which is in limited supply. Recent advances in the synthesis and characterization of graphene indicate that it may be suitable for many electronic applications including as a transparent conductor. Graphene hybrids with, for example, carbon nanotubes, may prove to be especially interesting. DEWEY : 620 ISSN : 1369-7021 En ligne : http://www.sciencedirect.com/science/article/pii/S1369702110700341 [article] Graphene, a promising transparent conductor [texte imprimé] / Jonathan K. Wassei, Auteur ; Richard B. Kaner, Auteur . - 2010 . - pp. 52–59. Ingénierie Langues : Anglais (eng) in Materials today > Vol. 13 N° 3 (Mars 2010) . - pp. 52–59 Mots-clés : Graphene  Hybrid  materials  Transparent  conductors  Graphite  oxide  Carbon  nanotubes Index. décimale : 620 Essais des matériaux. Matériaux commerciaux. Station génératrice d'énergie. Economie de l'énergie Résumé : New electronic devices such as touch screens, flexible displays, printable electronics, solid-state lighting and thin film photovoltaics have led to a rapidly growing market for flexible transparent conductors. Standard indium tin oxide films are unlikely to satisfy future needs due to losses in conductivity on bending and the escalating cost of indium which is in limited supply. Recent advances in the synthesis and characterization of graphene indicate that it may be suitable for many electronic applications including as a transparent conductor. Graphene hybrids with, for example, carbon nanotubes, may prove to be especially interesting. DEWEY : 620 ISSN : 1369-7021 En ligne : http://www.sciencedirect.com/science/article/pii/S1369702110700341

Atomic layer deposition of nanoporous biomaterials / Roger J. Narayan in Materials today, Vol. 13 N° 3 (Mars 2010) 

Public ISBD [article]  in Materials today > Vol. 13 N° 3 (Mars 2010) . - pp. 60–64 Titre : Atomic layer deposition of nanoporous biomaterials Type de document : texte imprimé Auteurs : Roger J. Narayan, Auteur ; Shashishekar P. Adiga, Auteur ; Michael J. Pellin, Auteur Année de publication : 2010 Article en page(s) : pp. 60–64 Note générale : Ingénierie Langues : Anglais (eng) Mots-clés : Atomic  layer  Nanoporous  alumina  Biosensing  Membranes  Antimicrobial  activity  Nanostructured  biomaterials Index. décimale : 620 Essais des matériaux. Matériaux commerciaux. Station génératrice d'énergie. Economie de l'énergie Résumé : Due to its chemical stability, uniform pore size, and high pore density, nanoporous alumina is being investigated for use in biosensing, drug delivery, hemodialysis, and other medical applications. In recent work, we have examined the use of atomic layer deposition for coating the surfaces of nanoporous alumina membranes. Zinc oxide coatings were deposited on nanoporous alumina membranes using atomic layer deposition. The zinc oxide-coated nanoporous alumina membranes demonstrated antimicrobial activity against Escherichia coli and Staphylococcus aureus bacteria. These results suggest that atomic layer deposition is an attractive technique for modifying the surfaces of nanoporous alumina membranes and other nanostructured biomaterials. DEWEY : 620 ISSN : 1369-7021 En ligne : http://www.sciencedirect.com/science/article/pii/S1369702110700353 [article] Atomic layer deposition of nanoporous biomaterials [texte imprimé] / Roger J. Narayan, Auteur ; Shashishekar P. Adiga, Auteur ; Michael J. Pellin, Auteur . - 2010 . - pp. 60–64. Ingénierie Langues : Anglais (eng) in Materials today > Vol. 13 N° 3 (Mars 2010) . - pp. 60–64 Mots-clés : Atomic  layer  Nanoporous  alumina  Biosensing  Membranes  Antimicrobial  activity  Nanostructured  biomaterials Index. décimale : 620 Essais des matériaux. Matériaux commerciaux. Station génératrice d'énergie. Economie de l'énergie Résumé : Due to its chemical stability, uniform pore size, and high pore density, nanoporous alumina is being investigated for use in biosensing, drug delivery, hemodialysis, and other medical applications. In recent work, we have examined the use of atomic layer deposition for coating the surfaces of nanoporous alumina membranes. Zinc oxide coatings were deposited on nanoporous alumina membranes using atomic layer deposition. The zinc oxide-coated nanoporous alumina membranes demonstrated antimicrobial activity against Escherichia coli and Staphylococcus aureus bacteria. These results suggest that atomic layer deposition is an attractive technique for modifying the surfaces of nanoporous alumina membranes and other nanostructured biomaterials. DEWEY : 620 ISSN : 1369-7021 En ligne : http://www.sciencedirect.com/science/article/pii/S1369702110700353

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