Documents disponibles écrits par cet auteur

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

Medical prototyping using two photon polymerization / Roger J. Narayan in Materials today, Vol. 13 N° 12 (Décembre 2010) 

Public ISBD [article]  in Materials today > Vol. 13 N° 12 (Décembre 2010) . - pp. 42-48 Titre : Medical prototyping using two photon polymerization Type de document : texte imprimé Auteurs : Roger J. Narayan, Auteur ; Anand Doraiswamy, Auteur ; Douglas B. Chrisey, Auteur Année de publication : 2011 Article en page(s) : pp. 42-48 Note générale : Ingénierie Langues : Anglais (eng) Mots-clés : Medical  prototyping  Photosensitive  materials  Polymerization  Laser  pulses  Computer  models Index. décimale : 620 Essais des matériaux. Matériaux commerciaux. Station génératrice d'énergie. Economie de l'énergie Résumé : Two photon polymerization involves nearly simultaneous absorption of ultrashort laser pulses for selective curing of photosensitive material. This process has recently been used to create small-scale medical devices out of several classes of photosensitive materials, such as acrylate-based polymers, organically-modified ceramic materials, zirconium sol-gels, and titanium-containing hybrid materials. In this review, the use of two photon polymerization for fabrication of several types of small-scale medical devices, including microneedles, artificial tissues, microfluidic devices, pumps, sensors, and valves, from computer models is described. Necessary steps in the development of two photon polymerization as a commercially viable medical device manufacturing method are also considered. DEWEY : 620 ISSN : 1369-7021 En ligne : http://www.sciencedirect.com/science/article/pii/S1369702110702236 [article] Medical prototyping using two photon polymerization [texte imprimé] / Roger J. Narayan, Auteur ; Anand Doraiswamy, Auteur ; Douglas B. Chrisey, Auteur . - 2011 . - pp. 42-48. Ingénierie Langues : Anglais (eng) in Materials today > Vol. 13 N° 12 (Décembre 2010) . - pp. 42-48 Mots-clés : Medical  prototyping  Photosensitive  materials  Polymerization  Laser  pulses  Computer  models Index. décimale : 620 Essais des matériaux. Matériaux commerciaux. Station génératrice d'énergie. Economie de l'énergie Résumé : Two photon polymerization involves nearly simultaneous absorption of ultrashort laser pulses for selective curing of photosensitive material. This process has recently been used to create small-scale medical devices out of several classes of photosensitive materials, such as acrylate-based polymers, organically-modified ceramic materials, zirconium sol-gels, and titanium-containing hybrid materials. In this review, the use of two photon polymerization for fabrication of several types of small-scale medical devices, including microneedles, artificial tissues, microfluidic devices, pumps, sensors, and valves, from computer models is described. Necessary steps in the development of two photon polymerization as a commercially viable medical device manufacturing method are also considered. DEWEY : 620 ISSN : 1369-7021 En ligne : http://www.sciencedirect.com/science/article/pii/S1369702110702236