Catalogue en ligne Bibliothèque Ecole Nationale Polytechnique d'Alger

Analysis of an ultra hard magnetic biomineral in chiton radular teeth / James C. Weaver in Materials today, Vol. 13 N° 1-2 (Janvier/Fevrier 2010)

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[article]
in Materials today > Vol. 13 N° 1-2 (Janvier/Fevrier 2010) . - pp. 42–52
Titre : Analysis of an ultra hard magnetic biomineral in chiton radular teeth
Type de document : texte imprimé
Auteurs : James C. Weaver, Auteur ; Qianqian Wang, Auteur ; Ali Miserez, Auteur
Année de publication : 2010
Article en page(s) : pp. 42–52
Note générale : Ingénierie
Langues : Anglais (eng)
Mots-clés : Mineralized biological materials Anisotropic crystal nucleation Chiton radular Biominerals
Index. décimale : 620 Essais des matériaux. Matériaux commerciaux. Station génératrice d'énergie. Economie de l'énergie
Résumé : Recent analyses of the ultrastructural and mechanical properties of mineralized biological materials have demonstrated some common architectural features that can help explain their observed damage tolerance. Nature has accomplished this feat through the precise control of anisotropic crystal nucleation and growth processes in conjunction with nanoscale control over the self-assembly of spatially distinct organic and inorganic phases, resulting in effective inhibition of crack propagation through these materials. One such example is found in the hyper-mineralized and abrasion resistant radular teeth of the chitons, a group of herbivorous marine mollusks who have the surprising capacity to erode away the rocky substrates on which they graze [1], [2], [3] and [4]. Through the use of modern microscopy and nanomechanical characterization techniques, we describe the architectural and mechanical properties of the radular teeth from Cryptochiton stelleri. Chiton teeth are shown to exhibit the largest hardness and stiffness of any biominerals reported to date, being notably as much as three-fold harder than human enamel and the calcium carbonate-based shells of mollusks. We explain how the unique multi-phasic design of these materials contributes not only to their functionality, but also highlights some interesting design principles that might be applied to the fabrication of synthetic composites.

DEWEY : 620
ISSN : 1369-7021
En ligne : http://www.sciencedirect.com/science/article/pii/S136970211070016X

[article] Analysis of an ultra hard magnetic biomineral in chiton radular teeth [texte imprimé] / James C. Weaver, Auteur ; Qianqian Wang, Auteur ; Ali Miserez, Auteur . - 2010 . - pp. 42–52.
Ingénierie
Langues : Anglais (eng)
in Materials today > Vol. 13 N° 1-2 (Janvier/Fevrier 2010) . - pp. 42–52
Mots-clés : Mineralized biological materials Anisotropic crystal nucleation Chiton radular Biominerals
Index. décimale : 620 Essais des matériaux. Matériaux commerciaux. Station génératrice d'énergie. Economie de l'énergie
Résumé : Recent analyses of the ultrastructural and mechanical properties of mineralized biological materials have demonstrated some common architectural features that can help explain their observed damage tolerance. Nature has accomplished this feat through the precise control of anisotropic crystal nucleation and growth processes in conjunction with nanoscale control over the self-assembly of spatially distinct organic and inorganic phases, resulting in effective inhibition of crack propagation through these materials. One such example is found in the hyper-mineralized and abrasion resistant radular teeth of the chitons, a group of herbivorous marine mollusks who have the surprising capacity to erode away the rocky substrates on which they graze [1], [2], [3] and [4]. Through the use of modern microscopy and nanomechanical characterization techniques, we describe the architectural and mechanical properties of the radular teeth from Cryptochiton stelleri. Chiton teeth are shown to exhibit the largest hardness and stiffness of any biominerals reported to date, being notably as much as three-fold harder than human enamel and the calcium carbonate-based shells of mollusks. We explain how the unique multi-phasic design of these materials contributes not only to their functionality, but also highlights some interesting design principles that might be applied to the fabrication of synthetic composites.

DEWEY : 620
ISSN : 1369-7021
En ligne : http://www.sciencedirect.com/science/article/pii/S136970211070016X

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

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[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

Biomimetic materials in tissue engineering / Jennifer Patterson in Materials today, Vol. 13 N° 1-2 (Janvier/Fevrier 2010)

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[article]
in Materials today > Vol. 13 N° 1-2 (Janvier/Fevrier 2010) . - pp. 14–22
Titre : Biomimetic materials in tissue engineering
Type de document : texte imprimé
Auteurs : Jennifer Patterson, Auteur ; Mikaël M. Martino, Auteur ; Jeffrey A. Hubbell, Auteur
Année de publication : 2010
Article en page(s) : pp. 14–22
Note générale : Ingénierie
Langues : Anglais (eng)
Mots-clés : Molecules Biomolecules Biomimetic materials Chemical schemes Tissue engineering
Index. décimale : 620 Essais des matériaux. Matériaux commerciaux. Station génératrice d'énergie. Economie de l'énergie
Résumé : Biomaterial matrices are being developed that mimic the key characteristics of the extracellular matrix, including presenting adhesion sites and displaying growth factors in the context of a viscoelastic hydrogel. This review focuses on two classes of materials: those that are derived from naturally occurring molecules and those that recapitulate key motifs of biomolecules within biologically active synthetic materials. For biologically derived materials, methods are being sought to gain molecular-level control over biological characteristics and biomechanics. For synthetic, biomimetic materials, chemical schemes are being developed to enable in situ cross-linking and protease-dependent degradation and release of incorporated growth factors. These materials will open new doors to biosurgical therapeutics in tissue engineering and regenerative medicine.

DEWEY : 620
ISSN : 1369-7021
En ligne : http://www.sciencedirect.com/science/article/pii/S1369702110700134

[article] Biomimetic materials in tissue engineering [texte imprimé] / Jennifer Patterson, Auteur ; Mikaël M. Martino, Auteur ; Jeffrey A. Hubbell, Auteur . - 2010 . - pp. 14–22.
Ingénierie
Langues : Anglais (eng)
in Materials today > Vol. 13 N° 1-2 (Janvier/Fevrier 2010) . - pp. 14–22
Mots-clés : Molecules Biomolecules Biomimetic materials Chemical schemes Tissue engineering
Index. décimale : 620 Essais des matériaux. Matériaux commerciaux. Station génératrice d'énergie. Economie de l'énergie
Résumé : Biomaterial matrices are being developed that mimic the key characteristics of the extracellular matrix, including presenting adhesion sites and displaying growth factors in the context of a viscoelastic hydrogel. This review focuses on two classes of materials: those that are derived from naturally occurring molecules and those that recapitulate key motifs of biomolecules within biologically active synthetic materials. For biologically derived materials, methods are being sought to gain molecular-level control over biological characteristics and biomechanics. For synthetic, biomimetic materials, chemical schemes are being developed to enable in situ cross-linking and protease-dependent degradation and release of incorporated growth factors. These materials will open new doors to biosurgical therapeutics in tissue engineering and regenerative medicine.

DEWEY : 620
ISSN : 1369-7021
En ligne : http://www.sciencedirect.com/science/article/pii/S1369702110700134

Bistability, higher harmonics, and chaos in AFM / Robert W. Stark in Materials today, Vol. 13 N° 9 (Septembre 2010)

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[article]
in Materials today > Vol. 13 N° 9 (Septembre 2010) . - pp. 24-32
Titre : Bistability, higher harmonics, and chaos in AFM
Type de document : texte imprimé
Auteurs : Robert W. Stark, Auteur
Année de publication : 2011
Article en page(s) : pp. 24-32
Note générale : Ingénierie
Langues : Anglais (eng)
Mots-clés : Bistability Nanometres Sensor Force electrostatic Force magnetic Non-linearity Nanoscale material Atomic force
Index. décimale : 620 Essais des matériaux. Matériaux commerciaux. Station génératrice d'énergie. Economie de l'énergie
Résumé : A dynamic atomic force microscope sensitively probes surface properties with subnanometre lateral resolution. In the amplitude modulation mode, the force-sensing tip oscillates a few nanometres. The force sensor is a harmonic oscillator that interacts with a barrier, which can be described as a non-linear potential consisting of an attractive well and a repulsive wall. Further non-linearities may be introduced by adhesion, electrostatic or magnetic forces. Thus, the character of the non-linearity is intimately related to the material properties. This review highlights the non-linear dynamics in the amplitude modulation mode and how they enable and affect nanoscale material characterisation.

DEWEY : 620
ISSN : 1369-7021
En ligne : http://www.sciencedirect.com/science/article/pii/S1369702110701620

[article] Bistability, higher harmonics, and chaos in AFM [texte imprimé] / Robert W. Stark, Auteur . - 2011 . - pp. 24-32.
Ingénierie
Langues : Anglais (eng)
in Materials today > Vol. 13 N° 9 (Septembre 2010) . - pp. 24-32
Mots-clés : Bistability Nanometres Sensor Force electrostatic Force magnetic Non-linearity Nanoscale material Atomic force
Index. décimale : 620 Essais des matériaux. Matériaux commerciaux. Station génératrice d'énergie. Economie de l'énergie
Résumé : A dynamic atomic force microscope sensitively probes surface properties with subnanometre lateral resolution. In the amplitude modulation mode, the force-sensing tip oscillates a few nanometres. The force sensor is a harmonic oscillator that interacts with a barrier, which can be described as a non-linear potential consisting of an attractive well and a repulsive wall. Further non-linearities may be introduced by adhesion, electrostatic or magnetic forces. Thus, the character of the non-linearity is intimately related to the material properties. This review highlights the non-linear dynamics in the amplitude modulation mode and how they enable and affect nanoscale material characterisation.

DEWEY : 620
ISSN : 1369-7021
En ligne : http://www.sciencedirect.com/science/article/pii/S1369702110701620

Bulletin des énergies renouvelables / Belhamel, Maïouf

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[périodique] Voir les bulletins disponibles Rechercher dans ce périodique
Titre : Bulletin des énergies renouvelables
Type de document : texte imprimé
Auteurs : Belhamel, Maïouf, Directeur de publication, rédacteur en chef ; Majda Amina Aziza, Directeur de publication, rédacteur en chef ; Rafika Bouderies, Directeur de publication, rédacteur en chef
Editeur : Alger : CDER
Année de publication : 2002-
ISBN/ISSN/EAN : 1112-3850
Note générale : Périodicité: semestriel puis trimestrielle
2002-2005
2010-2016
Langues : Français (fre)
Mots-clés : Energies renouvelables
Index. décimale : 620 Essais des matériaux. Matériaux commerciaux. Station génératrice d'énergie. Economie de l'énergie
En ligne : https://www.cder.dz/spip.php?rubrique40

[périodique] Voir les bulletins disponibles Rechercher dans ce périodique Bulletin des énergies renouvelables [texte imprimé] / Belhamel, Maïouf, Directeur de publication, rédacteur en chef ; Majda Amina Aziza, Directeur de publication, rédacteur en chef ; Rafika Bouderies, Directeur de publication, rédacteur en chef . - Alger : CDER, 2002-.
ISSN : 1112-3850
Périodicité: semestriel puis trimestrielle
2002-2005
2010-2016
Langues : Français (fre)
Mots-clés : Energies renouvelables
Index. décimale : 620 Essais des matériaux. Matériaux commerciaux. Station génératrice d'énergie. Economie de l'énergie
En ligne : https://www.cder.dz/spip.php?rubrique40

Bulletin signalétique, 9. Sciences de l'ingenieur / N. Dusoulier

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Carbon nanotube-guided thermopower waves / Wonjoon Choi in Materials today, Vol. 13 N° 10 (Octobre 2010)

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

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Charge-transfer with graphene and nanotubes / C.N.R. Rao in Materials today, Vol. 13 N° 9 (Septembre 2010)

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Chemical patterning in biointerface science / Ryosuke Ogaki in Materials today, Vol. 13 N° 4 (Avril 2010)

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Chemical sensitivity of porphyrin assemblies / Corrado Di Natale in Materials today, Vol. 13 N° 7-8 (Juillet/Août 2010)

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Chemistry and material science at the cell surface / Weian Zhao in Materials today, Vol. 13 N° 4 (Avril 2010)

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

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Cryogels / Ashok Kumar in Materials today, Vol. 13 N° 11 (Novembre 2010)

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Designing polymer surfaces via vapor deposition / Ayse Asatekin in Materials today, Vol. 13 N° 5 (Mai 2010)

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Détail de l'indexation

620 : Essais des matériaux. Matériaux commerciaux. Station génératrice d'énergie. Economie de l'énergie

Ouvrages de la bibliothèque en indexation 620

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