Dépouillements

Dynamic actuation using nano-bio interfaces / Ian Y. Wong in Materials today, Vol. 13 N° 6 (Juin 2010) 

Public ISBD [article]  in Materials today > Vol. 13 N° 6 (Juin 2010) . - pp. 14–22 Titre : Dynamic actuation using nano-bio interfaces Type de document : texte imprimé Auteurs : Ian Y. Wong, Auteur ; Benjamin D. Almquist, Auteur ; Nicholas A. Melosh, Auteur Année de publication : 2011 Article en page(s) : pp. 14–22 Note générale : Ingénierie Langues : Anglais (eng) Mots-clés : Nano-bio  interfaces  Nanomaterials  Nanofabrication  techniques  Biomolecular  activity  Cell  membrane Index. décimale : 620 Essais des matériaux. Matériaux commerciaux. Station génératrice d'énergie. Economie de l'énergie Résumé : The nanoscale dimensions, sensitive electronic control, and flexible architecture of new generations of nanomaterials and nanofabrication techniques hold immense promise not only for electronic devices, but also biological interfaces. As the size scales of these materials approach biological species, interfaces with characteristics designed to emulate their nanoscale biological counterparts are becoming possible. These new systems have higher biocompatibility, functionality, and lower cell toxicity than their microscale predecessors. While stellar examples have been demonstrated for biomolecular detection and imaging, exciting new possibilities for long-term integration and dynamic stimulation are now emerging, including protein activation, membrane integration and intracellular delivery. These tailored interfaces may lead to improved regenerative medicine, gene therapy and neural prosthetics. DEWEY : 620 ISSN : 1369-7021 En ligne : http://www.sciencedirect.com/science/article/pii/S136970211070105X [article] Dynamic actuation using nano-bio interfaces [texte imprimé] / Ian Y. Wong, Auteur ; Benjamin D. Almquist, Auteur ; Nicholas A. Melosh, Auteur . - 2011 . - pp. 14–22. Ingénierie Langues : Anglais (eng) in Materials today > Vol. 13 N° 6 (Juin 2010) . - pp. 14–22 Mots-clés : Nano-bio  interfaces  Nanomaterials  Nanofabrication  techniques  Biomolecular  activity  Cell  membrane Index. décimale : 620 Essais des matériaux. Matériaux commerciaux. Station génératrice d'énergie. Economie de l'énergie Résumé : The nanoscale dimensions, sensitive electronic control, and flexible architecture of new generations of nanomaterials and nanofabrication techniques hold immense promise not only for electronic devices, but also biological interfaces. As the size scales of these materials approach biological species, interfaces with characteristics designed to emulate their nanoscale biological counterparts are becoming possible. These new systems have higher biocompatibility, functionality, and lower cell toxicity than their microscale predecessors. While stellar examples have been demonstrated for biomolecular detection and imaging, exciting new possibilities for long-term integration and dynamic stimulation are now emerging, including protein activation, membrane integration and intracellular delivery. These tailored interfaces may lead to improved regenerative medicine, gene therapy and neural prosthetics. DEWEY : 620 ISSN : 1369-7021 En ligne : http://www.sciencedirect.com/science/article/pii/S136970211070105X

Self-assembly of block copolymer thin films / Julie N.L. Albert in Materials today, Vol. 13 N° 6 (Juin 2010) 

Public ISBD [article]  in Materials today > Vol. 13 N° 6 (Juin 2010) . - pp. 24–33 Titre : Self-assembly of block copolymer thin films Type de document : texte imprimé Auteurs : Julie N.L. Albert, Auteur ; Thomas H. Epps, Auteur Année de publication : 2011 Article en page(s) : pp. 24–33 Note générale : Ingénierie Langues : Anglais (eng) Mots-clés : Self-assemble  Block  copolymers  Thin  film  Geometrie  Surface  energetics Index. décimale : 620 Essais des matériaux. Matériaux commerciaux. Station génératrice d'énergie. Economie de l'énergie Résumé : Block copolymers self-assemble on nanometer length scales, making them ideal for emerging nanotechnologies. Many applications (e.g., templating, membranes) require the use of block copolymers in thin film geometries (∼100 nm thickness), where self-assembly is strongly influenced by surface energetics. In this review, we discuss the roles of surface and interfacial effects on self-assembly, with a specific focus on confinement, substrate surface modification, and thermal and solvent annealing conditions. Finally, we comment on novel techniques for manipulating and characterizing thin films, motivating the use of gradient and high-throughput methods for gaining a comprehensive picture of self-assembly to enable advanced nanotechnologies. DEWEY : 620 ISSN : 1369-7021 En ligne : http://www.sciencedirect.com/science/article/pii/S1369702110701061 [article] Self-assembly of block copolymer thin films [texte imprimé] / Julie N.L. Albert, Auteur ; Thomas H. Epps, Auteur . - 2011 . - pp. 24–33. Ingénierie Langues : Anglais (eng) in Materials today > Vol. 13 N° 6 (Juin 2010) . - pp. 24–33 Mots-clés : Self-assemble  Block  copolymers  Thin  film  Geometrie  Surface  energetics Index. décimale : 620 Essais des matériaux. Matériaux commerciaux. Station génératrice d'énergie. Economie de l'énergie Résumé : Block copolymers self-assemble on nanometer length scales, making them ideal for emerging nanotechnologies. Many applications (e.g., templating, membranes) require the use of block copolymers in thin film geometries (∼100 nm thickness), where self-assembly is strongly influenced by surface energetics. In this review, we discuss the roles of surface and interfacial effects on self-assembly, with a specific focus on confinement, substrate surface modification, and thermal and solvent annealing conditions. Finally, we comment on novel techniques for manipulating and characterizing thin films, motivating the use of gradient and high-throughput methods for gaining a comprehensive picture of self-assembly to enable advanced nanotechnologies. DEWEY : 620 ISSN : 1369-7021 En ligne : http://www.sciencedirect.com/science/article/pii/S1369702110701061

Colloidal self-assembly at an interface / Ryan McGorty in Materials today, Vol. 13 N° 6 (Juin 2010) 

Public ISBD [article]  in Materials today > Vol. 13 N° 6 (Juin 2010) . - pp. 34–42 Titre : Colloidal self-assembly at an interface Type de document : texte imprimé Auteurs : Ryan McGorty, Auteur ; Jerome Fung, Auteur ; David Kaz, Auteur Année de publication : 2011 Article en page(s) : pp. 34–42 Note générale : Ingénierie Langues : Anglais (eng) Mots-clés : Oil  water  interfaces  Solid  particles  Fluids Index. décimale : 620 Essais des matériaux. Matériaux commerciaux. Station génératrice d'énergie. Economie de l'énergie Résumé : Mix a drop of water into a vial of oil. With some surfactant and a vigorous shake, that one droplet has become thousands, and the total interfacial area has increased by an order of magnitude or more. Like the folded membranes in our mitochondria, the alveoli in our lungs, and the catalytic converters in our cars, oil-water emulsions contain a vast reservoir of interfacial area that can be used to control and transform the things that encounter it. The oil-water interface is especially well-suited to directing the assembly of colloidal particles, which bind to it rapidly and often irreversibly. DEWEY : 620 ISSN : 1369-7021 En ligne : http://www.sciencedirect.com/science/article/pii/S1369702110701073 [article] Colloidal self-assembly at an interface [texte imprimé] / Ryan McGorty, Auteur ; Jerome Fung, Auteur ; David Kaz, Auteur . - 2011 . - pp. 34–42. Ingénierie Langues : Anglais (eng) in Materials today > Vol. 13 N° 6 (Juin 2010) . - pp. 34–42 Mots-clés : Oil  water  interfaces  Solid  particles  Fluids Index. décimale : 620 Essais des matériaux. Matériaux commerciaux. Station génératrice d'énergie. Economie de l'énergie Résumé : Mix a drop of water into a vial of oil. With some surfactant and a vigorous shake, that one droplet has become thousands, and the total interfacial area has increased by an order of magnitude or more. Like the folded membranes in our mitochondria, the alveoli in our lungs, and the catalytic converters in our cars, oil-water emulsions contain a vast reservoir of interfacial area that can be used to control and transform the things that encounter it. The oil-water interface is especially well-suited to directing the assembly of colloidal particles, which bind to it rapidly and often irreversibly. DEWEY : 620 ISSN : 1369-7021 En ligne : http://www.sciencedirect.com/science/article/pii/S1369702110701073

Use of nanomaterials in water purification / Roger Narayan in Materials today, Vol. 13 N° 6 (Juin 2010) 

Public ISBD [article]  in Materials today > Vol. 13 N° 6 (Juin 2010) . - pp. 44–46 Titre : Use of nanomaterials in water purification Type de document : texte imprimé Auteurs : Roger Narayan, Auteur Année de publication : 2011 Article en page(s) : pp. 44–46 Note générale : Ingénierie Langues : Anglais (eng) Mots-clés : Nanomaterials  Water  purification  materials Index. décimale : 620 Essais des matériaux. Matériaux commerciaux. Station génératrice d'énergie. Economie de l'énergie Résumé : The recent earthquake in Haiti has focused worldwide attention on the need for improved water purification materials and systems. Numerous individuals, religious charities, non-governmental organizations, and private companies have sent water purifications systems to Haiti in recent months in order to stem the spread of waterborne diseases. This recent tragedy has placed a spotlight on the ongoing problem of inadequate access to safe water in developing countries. The United Nations estimates that 1.1 billion people, or eighteen per cent of the world population, cannot obtain safe water at this time1. In developing countries, waterborne diseases such as cholera, dysentery, enteric fever, and hepatitis A are quite common2. Endemic diarrheal diseases place individuals, particularly children, at risk of arrested growth, malnutrition, and neurological conditions. The World Health Organization states that 1.6 million individuals, mostly young children, die from diarrheal diseases each year. DEWEY : 620 ISSN : 1369-7021 En ligne : http://www.sciencedirect.com/science/article/pii/S1369702110701085 [article] Use of nanomaterials in water purification [texte imprimé] / Roger Narayan, Auteur . - 2011 . - pp. 44–46. Ingénierie Langues : Anglais (eng) in Materials today > Vol. 13 N° 6 (Juin 2010) . - pp. 44–46 Mots-clés : Nanomaterials  Water  purification  materials Index. décimale : 620 Essais des matériaux. Matériaux commerciaux. Station génératrice d'énergie. Economie de l'énergie Résumé : The recent earthquake in Haiti has focused worldwide attention on the need for improved water purification materials and systems. Numerous individuals, religious charities, non-governmental organizations, and private companies have sent water purifications systems to Haiti in recent months in order to stem the spread of waterborne diseases. This recent tragedy has placed a spotlight on the ongoing problem of inadequate access to safe water in developing countries. The United Nations estimates that 1.1 billion people, or eighteen per cent of the world population, cannot obtain safe water at this time1. In developing countries, waterborne diseases such as cholera, dysentery, enteric fever, and hepatitis A are quite common2. Endemic diarrheal diseases place individuals, particularly children, at risk of arrested growth, malnutrition, and neurological conditions. The World Health Organization states that 1.6 million individuals, mostly young children, die from diarrheal diseases each year. DEWEY : 620 ISSN : 1369-7021 En ligne : http://www.sciencedirect.com/science/article/pii/S1369702110701085

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