Výsledky vyhledávání - "Roberta, Polak"

Reversible Self-Healing for Preserving Optical Transparency and Repairing Mechanical Damage in Composites

Autor: Michael F. Rubner, Kenan Song, Shiran Zhang, Khalid Askar, Roberta Polak, Robert E. Cohen

Publikováno v: ACS Applied Materials & Interfaces. 11:12797-12807

This research concentrates on the healing of optical properties, roughness, contact angle hysteresis, and shallow scratches in polymer/nanoparticle composites. A series of ternary composite blends [epoxy/halloysite nanotubes (HNTs)/cellulose acetate

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::cee627840034e725ec6fd4ad1e8acba7
https://doi.org/10.1021/acsami.9b00967

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Preparação, avaliação físico-química e biológica >i/I< de pericárdio bovino conjugado com fibroína de seda/quitosana via liofilização e irradiação

Autor: Roberta Polak

Publikováno v: Biblioteca Digital de Teses e Dissertações da USP
Universidade de São Paulo (USP)
instacron:USP

Neste trabalho, a irradiação por feixe de elétrons foi estudada como uma ferramenta para a reticulação do tecido de pericárdio bovino (PB). A conjugação de quitosana e fibroína de seda no tecido de PB liofilizado também foi objeto de estudo

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::21d737f08daff61de855395309f2abe4
https://doi.org/10.11606/d.9.2011.tde-28012011-111458

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Optimization of Amine-Rich Multilayer Thin Films for the Capture and Quantification of Prostate-Specific Antigen

Autor: Roberta Polak, Scott P. O. Danielsen, Grinia M. Bradwell, Michael F. Rubner, Robert E. Cohen, Marisa Masumi Beppu, Jonathan B. Gilbert

Publikováno v: Langmuir. 31:5479-5488

It is demonstrated that poly(allylamine hydrochloride)/poly(styrenesulfonate) (PAH/SPS) multilayer films can be successfully tailored for the capture and detection of small biomolecules in dilute concentrations. Based on in vitro results, these films

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1a3d0da6afc61469f2845b7efb977d03
https://doi.org/10.1021/acs.langmuir.5b00443

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Sugar-Mediated Disassembly of Mucin/Lectin Multilayers and Their Use as pH-Tolerant, On-Demand Sacrificial Layers

Autor: Rosanna M. Lim, Roberta Polak, Katharina Ribbeck, Michael F. Rubner, Marisa Masumi Beppu, Thomas Crouzier, Robert E. Cohen, Ronaldo Nogueira de Moraes Pitombo

Publikováno v: Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual)
Universidade de São Paulo (USP)
instacron:USP

The layer-by-layer (LbL) assembly of thin films on surfaces has proven to be an extremely useful technology for uses ranging from optics to biomedical applications. Releasing these films from the substrate to generate so-called free-standing multilay

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0bfeb8e5b2eb4773ce1d27f8544bcc40
https://doi.org/10.1021/bm5006905

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Inhibition of calcification of bovine pericardium after treatment with biopolymers, E-beam irradiation and in vitro endothelization

Autor: Andrea C.D. Rodas, Olga Z. Higa, Roberta Polak, Reinaldo Giudici, Dennis L. Chicoma, Marisa Masumi Beppu, Ronaldo Nogueira de Moraes Pitombo

Publikováno v: Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual)
Universidade de São Paulo (USP)
instacron:USP

This work has investigated the in vitro calcification of bovine pericardium (BP) treated with chitosan (C), silk fibroin (SF) and electron beam irradiation after its endothelization in vitro. For this purpose, freeze-dried BP membranes treated with m

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d2de5d5f8342bebe7e2da29ea3708738
https://doi.org/10.1016/j.msec.2012.08.009

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Enhanced Wear Resistance of Transparent Epoxy Composite Coatings with Vertically Aligned Halloysite Nanotubes

Autor: Robert E. Cohen, Roberta Polak, Dayong Chen, Kenan Song, Michael F. Rubner, Khalid Askar

Publikováno v: ACS applied materialsinterfaces. 8(51)

The influence of nanoparticle orientation on wear resistance of transparent composite coatings has been studied. Using a nozzle spray coating method, halloysite nanotubes (HNTs) were aligned in the in-plane and out-of-plane directions and in various

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::38ae15be52dc54578f38b88af86e78f0
https://pubmed.ncbi.nlm.nih.gov/27976847

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Spray-Coated Halloysite-Epoxy Composites: A Means To Create Mechanically Robust, Vertically Aligned Nanotube Composites

Autor: Kenan Song, Roberta Polak, Dayong Chen, Michael F. Rubner, Khalid Askar, Robert E. Cohen

Publikováno v: ACS applied materialsinterfaces. 8(31)

Halloysite nanotube-filled epoxy composites were fabricated using spray-coating methods. The halloysite nanotubes (HNTs) were aligned by the hydrodynamic flow conditions at the spray nozzle, and the polymer viscosity helped to preserve this preferent

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fa062b8e4c9e0dc48cc5b823775654f4
https://pubmed.ncbi.nlm.nih.gov/27428814

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Cytotoxicity and Endothelial Cell Adhesion of Lyophilized and Irradiated Bovine Pericardium Modified With Silk Fibroin and Chitosan

Autor: Andrea C.D. Rodas, Ronaldo Nogueira de Moraes Pitombo, Priscila H. Hara, Roberta Polak, Emily I. Lee, Olga Z. Higa

Publikováno v: Artificial Organs. 35:502-507

Grafts of biological tissues have been used since the 1960s as an alternative to the mechanical heart prostheses. Nowadays, the most consolidated treatment to bovine pericardial (BP) bioprostheses is the crosslinking with glutaraldehyde (GA), althoug

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::1173d1755fbf1206f3eda77a5ec056ae
https://doi.org/10.1111/j.1525-1594.2011.01255.x

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Layer-by-layer functionalized nanotube arrays: A versatile microfluidic platform for biodetection

Autor: Michael F. Rubner, Mehmet Toner, Allison L. Yost, Robert E. Cohen, Brian L. Wardle, Grinia M. Bradwell, Roberta Polak, Gareth H. McKinley, Fabio Fachin, Setareh Shahsavari

Publikováno v: Nature

We demonstrate the layer-by-layer (LbL) assembly of polyelectrolyte multilayers (PEM) on three-dimensional nanofiber scaffolds. High porosity (99%) aligned carbon nanotube (CNT) arrays are photolithographically patterned into elements that act as tex

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1d8d045c97411b57f4e2369da79161e6
https://doi.org/10.1038/micronano.2015.37

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Liposome-loaded cell backpacks

Autor: Robert E. Cohen, Rosanna M. Lim, Marisa Masumi Beppu, Roberta Polak, Ronaldo Nogueira de Moraes Pitombo, Michael F. Rubner

Publikováno v: Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual)
Universidade de São Paulo (USP)
instacron:USP

Cell backpacks, or micron-scale patches of a few hundred nanometers in thickness fabricated by layer-by-layer (LbL) assembly, are potentially useful vehicles for targeted drug delivery on the cellular level. In this work, echogenic liposomes (ELIPs)

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f91bc0a6c1ee234dc6e8915aad14531e

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